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automotive power data sheet rev. 1.1, 2014-04-01 tle8458 lin transceiver with int egrated voltage regulator tle8458g tle8458gv33
tle8458 data sheet 2 rev. 1.1 2014-04-01 1 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 pin assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 pin definitions and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 general product characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.2 functional range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.3 thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 mode control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5.1 operation mode state diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5.2 description of mode control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.2.1 stand-by mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.2.2 normal operation mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.2.2.1 normal slope mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5.2.2.2 software flash mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5.2.3 stop mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.2.4 sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.2.5 wake-up events in sleep and stop mo de . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.2.5.1 bus wake-up event . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5.2.5.2 local wake-up event . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5.2.5.3 mode transition via en pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5.2.6 power up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.2.7 over-temperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.3 current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5.4 electrical characteristics en and wk pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 5.5 power up, power down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 6 voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.1 description of voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.2 electrical characteristics of the voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 7 lin transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.1 functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.1.1 undervoltage detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 7.1.2 txd time-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 7.1.3 lin specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 7.2 electrical characteristics of the lin tr ansceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 8 application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 8.1 esd tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 8.1.1 emc measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 8.2 pin compatibility to stand-al one lin transceivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 9 package outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 10 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
type package marking note tle8458g pg-dso-8-16 8458g v cc = 5 v tle8458gv33 pg-dso-8-16 8458gv3 v cc = 3.3 v pg-dso-8-16 data sheet 3 rev. 1.1, 2014-04-01 lin transceiver with integrated voltage regulator lin-ldo tle8458 1overview features ? lin transceiver compliant to lin 2.1 ? 5 v or 3.3 v low drop voltage regulator ? 50 ma output current capability ? normal, stop, and sleep modes ? wake-up via bus from sleep mode ? wake-up from local wk pin ? very low quiescent current in stop mode ? very low quiescent current in sleep mode ? very high esd robustness 10 kv according iec61000-4-2 ? bus short to ground and v bat protection ? software flash mode ? over-temperature protection ? pin- and function compatible to single lin transceivers, like tle7259-3ge ? green (rohs compliant) product ? aec qualified description the tle8458g and tle8458gv33 integrate a low drop volt age regulator and a lin transceiver on one monolithic circuit. the device is suitable to supply microcontrollers and driving a lin bus at the same time. the tle8458 is pin compatible to stand-alone lin transceivers like the tle7259-3ge. the combination of a voltage regulator and a lin transceiver on one circuit decr eases the quiescent current for a typical application to a value of 8 a, while the tle8458 is still able to wake-up off a lin bus sign al or a signal change on th e local wake-up input wk. compliant to all lin standards and with a wide operat ional supply range, the tle8458 can be used in all automotive applications. based on the infineon smart power technology spt ? , the tle8458 provides excellent esd robustness together with a very high electro-magnetic i mmunity (emi). the tle8458 reaches a very low level of electro-magnetic emission (eme) within a broad frequency range. the tle8458 family and the infineon spt ? technology are aec qualified and tailored to withstand the harsh conditions in the automotive environment.
tle8458 block diagram data sheet 4 rev. 1.1, 2014-04-01 2 block diagram figure 1 block diagram wake and bus comparator driver temp.- protection current limit output stage supply txd input mode control receiver rxd filter lin txd en v cc v s r bus filter timeout gnd r en r txd bandgap reference overtemperature shutdown + - 1 charge pump wk vcc 1 2 3 4 5 6 7 8
tle8458 pin configuration data sheet 5 rev. 1.1, 2014-04-01 3 pin configuration 3.1 pin assignments figure 2 pin configuration 3.2 pin definitions and functions table 1 pin definition pin symbol function 1rxd receive data output; low in dominant state, active low after a wake-up event on bus or wk pin. 2en enable input; integrated pull-down resistor, device se t to normal operation mode when high. 3wk wake-up input; active low, negative edge triggered, internal pull-up. 4txd transmit data input; integrated pull-down resistor, low in do minant state. active low after wake-up via wk pin. 5gnd ground 6lin bus output / input; lin bus input / output, low in dominant state, internal termination and pull-up current source. 7 v s battery supply input 8 v cc output voltage; decouple to gnd with a capacitor c vcc 470 nf, esr < 6 ? at 10 khz, active during normal mode, disabled in sleep mode. rxd 1 2 3 45 6 7 8 en wk txd v s lin gnd v cc
tle8458 general product characteristics data sheet 6 rev. 1.1, 2014-04-01 4 general product characteristics 4.1 absolute maximum ratings notes 1. stresses above the ones listed here may cause perma nent damage to the device. exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2. integrated protection func tions are designed to prevent ic destructi on under fault conditions described in the data sheet. fault conditions are considered as ?outside? normal operating range. pr otection functi ons are not designed for continuous repetitive operation. table 2 absolute maximum ratings 1) all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) 1) not subject to production test; specified by design. parameter symbol values unit note / test condition number min. typ. max. voltages supply voltage on v s pin v s -0.3 ? 40 v lin2.1 param 11 p_4.1.1 input voltage on lin, wk pin versus gnd v lin,g -40 ? 40 v ? p_4.1.2 logic voltages at en, txd, rxd pin v l,max -0.3 ? 5.5 v ? p_4.1.3 output voltage at v cc pin v cc -0.3 ? 5.5 v static p_4.1.4 temperatures junction temperature t j -40 ? 150 c ? p_4.1.5 storage temperature t stg -55 ? 150 c ? p_4.1.6 esd resistivity esd all pins v esd,hbm -2 ? 2 kv hbm 2) 2) esd susceptibility, hb m according to ansi/esd a/jedec js-001 (1.5 k ? , 100pf) p_4.1.7 esd v s , wk, lin versus gnd v esd,hbm -8 ? 8 kv hbm 2) p_4.1.8 esd resistivity all pins versus gnd v esd,cdm -750 ? 750 v cdm 3) 3) esd susceptibility, charged device model ?cdm? eia / jesd 22-c101 or esda stm5.3.1 p_4.1.9
tle8458 general product characteristics data sheet 7 rev. 1.1, 2014-04-01 4.2 functional range note: within the functional range, the ic operates as described in the ci rcuit description. the electrical characteristics are specifi ed within the conditions given in the re lated electrical ch aracteristics table. 4.3 thermal characteristics table 3 functional range parameter symbol values unit note / test condition number min. typ. max. extended supply range v s(ext) 5.5 ? 40 v parameter deviations possible p_4.2.1 supply voltage for normal operation v s(nor) 7 ? 27 v lin 2.1 param. 11 p_4.2.3 junction temperature t j -40 ? 150 c ? p_4.2.2 table 4 thermal resistance parameter symbol values unit note / test condition number min. typ. max. thermal resistance junction to case pg-dso-8-16 r thjc,g ?55?k/w 1) 1) not subject to production tes t. simulated thermal resistance p_4.3.1 junction to ambient pg-dso-8-16 r thja,g ?120?k/w 1) , 2) 2) the r thja values are according to jedec jesd51-2,-7 at natural convection on 2s2p board for 1 w. package was simulated on a 76.2 114.3 1.5 mm3 board with 2 inner copper layers (70 m thick). p_4.3.2 thermal shutdown junction temperature v cc shutdown temperature t sd,vcc 150 ? 200 c 3) 3) not subject to production test, specified by design. p_4.3.5 v cc thermal shutdown hysteresis ? t sd,vcc ?35?k 3) p_4.3.6 lin shutdown temperature t sd,lin 150 ? 200 c 3) p_4.3.7 lin thermal shutdown hysteresis ? t sd,lin ?10?k 3) p_4.3.8
tle8458 mode control data sheet 8 rev. 1.1, 2014-04-01 5mode control 5.1 operation mode state diagram figure 3 operation mode state diagram standby mode normal slope mode sleep mode start up power up en wk pin or wake up bus vcc on bus off en txd en software flash mode vcc on bus on vcc off bus off stop mode wk pin or en vcc on bus off en txd go to normal t rmode go to sleep t mode go to sleep t mode en go to stop t mode en txd txd wake up bus en txd en txd en en rxd txd wake source 0 wk pin 1 1) lin bus 1 power-up wake-up source indication on the pins rxd, txd in stand-by mode 1) weak pull-down, to see high signal a external pull-up resistor is required 0 0 0 1 1) 1- normal operation mode vcc on bus on
tle8458 mode control data sheet 9 rev. 1.1, 2014-04-01 5.2 description of mode control the tle8458 has 4 major operation modes: ? normal operation mode ? stand-by mode ? sleep mode ? stop mode the normal operation mode contains 2 sub-operation modes, which differentiate by the slew rate control of the lin bus signal (see figure 3 ). sub-operation modes with different slew rates on the bus pin: ? normal slope mode, for data transmission rates up to 20 kbaud ? software flash mode, for programming of the external microcontroller the operation mode of the tle8458 is sele cted by the en pin and the txd pin. (see table 5 , see figure 4 ). table 5 operation modes mode en txd rxd v cc lin bus termination comments normal operation mode high low high 1) 1) the txd pin acts as an input low high on 30 k (typical) txd drives the data to the bus, rxd indicates the data on the bus. stand-by mode low low high 2) 2) the txd pin acts as an output and indicates the wake-up sour ce.the txd input needs an external termination to indicate a high or a low signal. the external termination could be a pull-up resistor or an acti ve microcontroller output. low high on 30 k (typical) in stand-by mode the rxd and txd pins indicate the wake-up source sleep mode low high float off high impedance for sleep mode txd needs to be high for the time t mode1 stop mode low low float on high impedance for stop mode txd needs to be low for the time t mode1
tle8458 mode control data sheet 10 rev. 1.1, 2014-04-01 figure 4 mode transition data transmission data transmission t mode3 dont care stand-by mode en t mode_no normal operation mode txd dont care data transmission t torec stand - by mode to normal operation mode en txd normal operation mode 1) sleep mode normal operation mode 1 ) to sleep mode normal operation mode 1) stop mode en normal operation mode 1 ) to stop mode t mode1 t mode1 t mode2 txd stop mode to sleep mode en dont care t mode1 txd stop mode sleep mode 1) normal operation mode can be either normal slope mode or software flash mode
tle8458 mode control data sheet 11 rev. 1.1, 2014-04-01 5.2.1 stand-by mode the stand-by mode is an idle operation mode, which di sables the communication to the lin bus. the tle8458 enters automatically the stand-by mode after a power-up. by setting the en pin to high, the operation mode changes to normal operation mode, regardless of the signal applied to the txd pin. the tle8458 can be transferred to stand-by mode by the following options: ? after power-up on the supply v s , the tle8458 starts in stand-by mode. ? from sleep mode or from stop mode the tle8458 changes to stand-by mode if a wake-up event occurs on the lin bus. ? from sleep mode or from stop mode the tle8458 changes to stand-by mode if a wake-up event occurs on the local wake input wk. ? in case of an undervoltage event on v s , the tle8458 changes to stand-by mode regardless of selected operation mode. in stand-by mode the external power supply v cc is active and lin bus output stage is disabled. the tle8458 provides the following functionality in stand-by mode: ? the power supply v cc is active and functional. ? the lin transceiver output stage is disabled , no communication to the lin bus is possible. ? the lin transceiver bus input receiver is disabled. ? the lin bus is terminated by the 30 k . ? both digital pins, the txd pin and the rxd pin act as ou tput pins and indicate a wake-up or a power-up event 2) . ? the en input pin is active. by sett ing the en pin to high the tle8458 changes the operation mode to normal operation mode (see figure 3 ). ? the wake-up logic is disabled. wake-up events don?t trigger an operation mode change. 5.2.2 normal operation mode the tle8458 enters the normal operation mode after the microcontroller sets en to ?high? (see figure 4 ). in normal operation mode the lin bus receiver and the lin bus transmitter are active. the tle8458 converts the logical high and low signals on the txd input pi n to dominant and recessive signals to the lin bus. simultaneously the input receiver of the tle8458 converts the dominant and recessive signals on the lin bus to high and low signals to the rxd output. in normal operation mode the output voltage v cc is active and the bus termination is set to 30 k . normal slope mode and the software flash mode are normal operation modes. in these two sub-modes the behavior of the power supply v cc and the bus termination are the same. per default the tle8458 always enters into normal slope mode, either from sleep mode, stop mode or from stand-by mode. the software flash mode can only be entered from normal slope mode. table 6 logic table for wake-up monitoring 1) 1) the wake-up monitor is only active in stand-by mode power-up wake-up event rxd txd 2) 2) the txd input needs an external termination to indicate a ? high? or a ?low? signal. the external termination could be a pull- up resistor or an active microcontroller output. comments yes no high low power up event no via lin bus low high wake-up via lin bus no via wk pin low low wake-up via local wake pin wk
tle8458 mode control data sheet 12 rev. 1.1, 2014-04-01 in order to avoid any bus disturbance during a mode cha nge, the output stage of the tle8458 is disabled and set to recessive state during the mode ch ange procedure. to release the tle8458 for data communication on the lin bus, the txd pin needs to be set to high for the time t torec after the operation mode change. 5.2.2.1 normal slope mode in normal slope mode the maximum data transmission rate of the lin transceiver is limited by the slope control mechanism of lin output signal. the limi tation of the slew rate of the lin ou tput signal results in an optimized radiated emission fulfilling au tomotive emc requirements. the data transmission rate of the tle8458g and the tle8458gv33 is limited to 20 kbaud in normal operation mode and the devices are compliant to the specification lin2.1. 5.2.2.2 software flash mode software flash mode is a normal operation mode and it is possible to transmit data to the lin bus and receive data from the lin bus. the slope control mechanism of t he lin transmitter output stage is disabled and therefore it is possible to reach higher data transmission rates, disregarding the emc limitation of the lin network. the software flash mode can be used for programming the external microcontroller via the lin bus, got example during the production flow of the ecu. the software flash mode can only be entered from normal slope mode (see figure 3 ). by setting the en pin to low for the time t fl1 and by generating a falling and a risi ng edge at the txd pin with the time t fl2 and t fl3 during the low phase of the en pin, the tle8458 changes to the software flash mode (see figure 5 ). vice versa, the tle8458 changes from software flash mode to normal slope mode by applying the same sequence to the en pin and the txd pin. in any case, regardless if the device is in normal slope mode or in software flash mode, a low signal on the en pin changes the operation mode to sleep mode or stop mode. the slope control me chanism will be activated, when the device changes to th e normal operation mode again. figure 5 software flash mode to20070515.vsd normal mode txd en t fl3 t fl1 software flash mode t fl2 t fl3 t fl3 t fl1 t fl2 t fl3 normal mode
tle8458 mode control data sheet 13 rev. 1.1, 2014-04-01 5.2.3 stop mode the stop mode is a low power mode, meaning the quiesce nt current of the tle8458 is reduced to a minimum, while the device is still able to recognized wake-up even ts. the following functions ar e available in stop mode: ? the power supply v cc is active and functional. ? the lin transceiver output stage is disabled , no communication to the lin bus is possible. ? the lin transceiver input receiver is disabled. ? the internal lin bus termination is switched off. ? the txd input and the rxd output is inactive. ? the en input is active. a high signal on the en pi n changes the operation mode to normal operation mode. ? the lin bus wake-up receiver is active, a wake-up event on the lin bus changes the operation mode to stand-by mode. ? the wake input wk is active, a wake-up event on the wk pin changes the operation mode to stand-by mode. entering stop mode is only possible from the normal o peration mode, regardless if t he device is in normal slope mode or software flash mode. setting the signal on the en pin to low, followed by a low signal on the txd pin for the time t mode1 changes the operation mode to stop mode (see figure 4 ). 5.2.4 sleep mode the sleep mode is a low power mode as well, in comparison to the stop mode, the quiescent current of the tle8458 is even further reduced. in sleep mode the tl e8458 is able as well to recognized wake-up events. the wake-up behavior in sleep mode is the same as in stop mode. the only difference between sleep mode and stop mode is, that in stop mode the output voltage v cc is active, in sleep mode the output voltage v cc is disabled. sleep mode can be entered from normal operation mode by setting the en pin to low and simultaneously setting the txd pin to high for the time t mode1 (see figure 4 ). the sleep mode can be also entered from stop mode, by setting the signal on the txd pin to high for the time t mode1 . 5.2.5 wake-up events in sleep and stop mode a wake-up event in sleep mode or stop mode changes the operation mode of the tle8458 to stand-by mode. there are 3 different options to wake-up the tle8458 from sleep mode or stop mode: ? a bus wake-up event, caused by a message on the lin bus. ? a local wake-up event, caused by a logical low signal on the wk pin. ? a signal change to logical high on the en pin.
tle8458 mode control data sheet 14 rev. 1.1, 2014-04-01 5.2.5.1 bus wake-up event a falling edge on the lin bus, followed by a dominant bus signal for the time t > t wk,bus causes a bus wake-up or also called remote wake-up. the mode change becomes active with the following rising edge on the lin bus (see figure 6 ). in stand-by mode the wake-up source is indicated by the txd and rxd pins (see table 6 ). figure 6 bus wake-up 5.2.5.2 local wake-up event a wake-up via low signal on the pin wk is called local wake-up. a falling edge of the signal on the pin wk followed by a low signal for the time t > t wk change the operation mode from sleep mode or stop mode to stand- by mode. in the case the low sign al is shorter then the time t < t wk , the wake-up is ignored and the tle8458 remains in sleep mode or stop mode. in stand-by mode the wake-up source is indicated by the txd and rxd pins (see table 6 ). in order to avoid unintended wake-ups via the local wake pin wk, the wk pin should get connected by a serial resistor to the power supply vs (see figure 15 ). before the tle8458 enters into sleep mode it is required to set the voltage on the wk pin to the vs power supply. v bus v bus,dom v bus,wk lin bus signal v cc t wk,bus sleep mode stand-by mode stop mode stand-by mode v cc note: in sleep mode the output voltage v cc is disabled and will be actived by a mode change to stand-by mode. in stop mode the output voltage v cc is active and remains active after the mode change to stand-by mode.
tle8458 mode control data sheet 15 rev. 1.1, 2014-04-01 figure 7 local bus wake-up 5.2.5.3 mode transition via en pin the en pin is used for the mode selection. in case the power supply v cc is present, like in stop mode or sleep mode, the tle8458 can be directly transferred into norma l operation mode by setting the en pin to high. an integrated pull-down resistor at the en pin avoids mode changes due to floating signals on the en input. the tle8458 changes the operation mode to normal operation mode, from stop mode or from sleep mode if the en pin is high for the time t > t mode1 (see figure 8 ). an integrated hysteresis on th e en pin avoids bit toggling. the mode transition via the en pin will no t be indicated in stand-by mode. figure 8 mode transition via en pin v wk v wk,l wk signal sleep mode stand-by mode t wk v cc stop mode stand-by mode v cc note: in sleep mode the output voltage v cc is disabled and will be actived by a mode change to stand-by mode. in stop mode the output voltage v cc is active and remains active after the mode change to stand-by mode. v en en signal v en,off stop mode / stand-by mode t mode_no v en,on en hysteresis sleep mode normal operation mode t mode1
tle8458 mode control data sheet 16 rev. 1.1, 2014-04-01 5.2.6 power up after a power-up the device enters per default into stand-by mode. above v s,pu the v cc output voltage follows the supply v s closely. in stand-by mode, the power-up is indi cated by a high signal on the rxd pin and a low signal on the txd pin. figure 9 power-up level 5.2.7 over-temperature protection the tle8458 is protected against ther mal over-heating. over-heating could be caused by a short circuit on the v cc power supply or by a permanent short on the lin bus combined with a high ambient temperature. in case of an over-temperature event, the tle8458 eliminates the r oot cause of the over-tempera ture event. two different temperature sensors are implemented inside the tle8458. one temperature sensor protects the voltage regulator and controls the output voltage v cc , the second temperature sensor protec ts the lin transmitter output stage. in case the junction temperature on the li n output stage raises above the threshold t > t sd,lin , the temperature sensor disables the lin output stage. the tle8458 is still able to receive data from the lin bus. if the temperature falls below the threshold, t < t sd,lin , the output stage will be ena bled and the communicati on can start again. an integrated hysteresis on the temperature sensor av oids toggling during over-tem perature events. an over- temperature event on the lin bus will not cause any operation mo de change. in case the junction temperature on the v cc power output stage raises above the threshold t > t sd,vcc , the temperature sensor shuts down the output voltage v cc . if the junction temperatur e falls below the threshold, t> t sd,vcc , the power supply v cc will be enabled again. an integrated hysteresis on the temperature sensor avoids toggling during over-temperature events. stand-by mode power down en txd rxd power down v s v cc v s,pu v rxd,h v cc v s v s,pu
tle8458 mode control data sheet 17 rev. 1.1, 2014-04-01 5.3 current consumption table 7 electrical characteristics: current consumption v s = 13.5 v, t j = -40 c +150 c, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) parameter symbol values unit note / test condition number min. typ. max. current consumption current consumption in normal mode at v s in lin recessive state i s_rec ? 1.3 2.2 ma recessive state, without r l ; v txd = v cc ; i cc = 100 a p_5.3.1 current consumption in normal mode at v s in lin dominant state i s_dom ? 1.8 3.2 ma dominant state, without r l ; v txd = 0 v; i cc = 100 a p_5.3.2 current consumption at v s in sleep mode i s_sleep ? 8 12 a sleep mode, -40 c < t j < 85 c; v lin = v s ; v cc = 0 v p_5.3.3 current consumption at v s in stop mode i s_stop ??40astop mode; -40 c < t j < 85 c; v lin = v s ; no load on v cc p_5.3.4 current consumption in sleep mode, bus shorted to ground i s_sleep_short 6 40 72 a sleep mode, v lin = 0 v v cc = 0 v p_5.3.5
tle8458 mode control data sheet 18 rev. 1.1, 2014-04-01 5.4 electrical character istics en and wk pins 5.5 power up, power down table 8 electrical characteristics: mode pins 7v< v s <27v, t j = -40 c +150 c, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) parameter symbol values unit note / test condition number min. typ. max. en pin high level input voltage v en,h 2??v? p_5.4.6 low level input voltage v en,l ??0.8v? p_5.4.7 en input hysteresis v en,hys ?0.3?v? p_5.4.8 en pull-down resistance r en 20 40 80 k ? ? p_5.4.9 filter time for mode change t mode1 50 ? 150 s ? p_5.4.10 txd low delay time t mode2 0 ? 50 s stop mode transfer p_5.4.11 txd high time t mode3 10 ? ? s stop mode transfer p_5.4.12 time for mode change from stop or sleep mode to normal operation mode t mode_no ?10?s 1) transfer to normal operation mode 1) not subject to production test, specified by design p_5.4.1 time for flash mode activation t fl1 25 ? 50 s 1) en pin low p_5.4.13 txd time for flash mode activation t fl2 5??s 1) p_5.4.14 txd time for flash mode activation t fl3 10 ? ? s 1) p_5.4.15 wk pin high level input voltage v wk,h v s - 1 ? v s + 3 v v s = 13.5 v p_5.4.16 low level input voltage v wk,l -0.3 ? v s - 4 v v s = 13.5 v p_5.4.17 pull-up current i wk,pu -60 -30 -3 a v wk = 0v v s = 13.5 v p_5.4.18 high level leakage current i wk,l -5 ? 5 a v s = 0 v; v wk = 40 v p_5.4.19 dominant time for wake-up t wk 30 ? 150 s ? p_5.4.20 table 9 electrical characteristics: power-up t j = -40 c +150 c, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) parameter symbol values unit note / test condition number min. typ. max. v s pin v s power-up voltage threshold v s,pu ??3.5v i cc =40ma, v cc >3.0v p_5.5.21
tle8458 voltage regulator data sheet 19 rev. 1.1, 2014-04-01 6 voltage regulator 6.1 description of voltage regulator the tle8458g has a monolithic integrated voltage regu lator dedicated for microcontroller supplies under harsh automotive environment conditions. due to its ultra low cu rrent consumption, the tle8458 is perfectly suited for applications permanently connected to a battery. additi onally, the regulator is swit ched off in sleep mode to achieve a very low quiescent current. the tle8458 is equipped with protection functions against overloading, short circuits, and over temperature. 6.2 electrical characteristi cs of the voltage regulator table 10 electrical characteristics: voltage regulator v s = 5.5 v to 13.5 v, t j = -40 c +150 c, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) parameter symbol values unit note / test condition number min. typ. max. output voltage for tle8458g v cc,5 4.95 5.1v1ma < i cc < 50 ma; 5.5 v < v s <18v p_6.2.1 output voltage for tle8458g v cc,5 4.95 5.1v i cc = 10 ma; 5.5 v < v s <40v p_6.2.8 output voltage for tle8458gv33 v cc,3.3 3.234 3.3 3.366 v 1 ma < i cc < 50 ma; 5.5 v < v s <18v p_6.2.2 output voltage for tle8458gv33 v cc,3.3 3.234 3.3 3.366 v i cc = 10 ma; 5.5 v < v s <40v p_6.2.9 output current limitation tle8458g i cc,lim 60 ? ? ma v cc,5 > 4.5v v s =13.5v p_6.2.3 output current limitation tle8458gv33 i cc,lim 50 ? ? ma v cc3,3 > 2.8v v s =13.5v p_6.2.10 output voltage drop v dr ? 250 500 mv i cc = 40 ma 1) 1) measured when the output voltage has drop ped 100 mv from the nominal value obtained at v s =13.5v p_6.2.4 load regulation ? v cc,lo ?2550mv1ma < i cc < 50 ma v s =13.5 v p_6.2.5 line regulation ? v cc,li ?2550mv i cc = 1 ma; 6v < v s < 28 v p_6.2.6 power supply ripple rejection psrr ?60?db f = 100 hz; v r = 0.5 vpp 2)3) 2) voltage of ripple v r is 0.5 v peak-to-peak 3) not subject to production test; specified by design. p_6.2.7
tle8458 lin transceiver data sheet 20 rev. 1.1, 2014-04-01 7 lin transceiver 7.1 functional description the lin bus is a single wire, bi-direc tional bus, used for in-vehicle networks. the lin transceiver implemented inside the tle8458 is the interface between the microcontroller and the physical lin bus. (see figure 1 and figure 15 ). the digital output data from the microcontroller are driven to the lin bus via the txd input pin on the tle8458. the transmit data stream on the txd input is converted to a lin bus signal with optimized slew rate to minimize the eme level of the lin network. the rxd outpu t sends back the information from the lin bus to the microcontroller. the receiver has an integrated filter network to suppress noise on the lin bus and to increase the emi (electro magnetic immunity) level of the transceiver. two logical states are possible on the lin bus according to the lin sp ecification 2.1 (see figure 10 ): in dominant state, the voltage on the lin bus is set close to the gnd level. in recessive state, the voltage on the lin bus is set close to the supply voltage v s . by setting the txd input of the tle8458 to low the transceiver generates a dominant level on the lin interface pin. the rxd output reads back the signal on the lin bus and indicates a dominant lin bus signal with a logical low to the microcontroller. setting the txd pin to high the transceiver tle8458 sets the lin interface pin lin to the recessive level, at the same time the recessive level on the lin bus is indicated by a lo gical ?high? on the rxd output. every lin network consists of a master node and one or more slave nodes. to conf igure the tle8458 for master node applications, a resist or in the range of 1 k and a reverse diode must be connected between the lin bus and the power supply v s . (see figure 15 ). figure 10 lin bus signals t txd v cc recessive lin v s t t rxd dominant v cc recessive recessive dominant recessive recessive dominant recessive
tle8458 lin transceiver data sheet 21 rev. 1.1, 2014-04-01 7.1.1 undervoltage detection a dropping power supply v s on a local ecu can effect the communicatio n of the whole lin ne twork. to avoid any blocking of the lin network by a local ecu the tle8 458 has an integrated power-on reset at the supply v s and an undervoltage detection at the supply v s . in case the supply voltage v s is dropping below the power-on reset level v s < v s,uv,pon , the tle8458 changes the operation mode to stand-by mode. in stand-by mode the output stage of the tle8458 is disabled and no communication to the lin bus is possible. the internal bus termination remains active as well as the v cc output voltage. (see figure 1 and figure 11 ). in stand-by mode the rxd pin indicates the low power su pply condition with a logical high signal. setting the en pin to logical high changes the operatio n mode back to normal operation mode. in case the supply voltage v s is dropping below the undervoltage reset level v s < v suv (see figure 11 ), the tle8458 disables the output and receiver stages. this fe ature secures the communication on the lin bus. if the power supply v s reaches a higher level as the undervoltage reset level v s > v suv the tle8458 continues with normal operation. a mode change on ly applies if the power supply v s drops below the power on reset level ( v s < v s,uv,pon ). figure 11 under-voltage detection supply voltage vs power on reset level v s,uv,pon power on reset normal operation mode reset and communication blocked stand-by mode blanking time t uv supply voltage vs power on reset level v s,uv,pon normal operation mode communication blocked blanking time t uv under voltage level v suv normal operation mode under voltage detection v s
tle8458 lin transceiver data sheet 22 rev. 1.1, 2014-04-01 7.1.2 txd time-out if the txd signal is dominant for the time t > t timeout , the txd time-out function deactivates the lin transmitter output stage. the device remains in recessiv e state. the txd time-out functions prevents the lin bus from being blocked by a permanent low signal on the txd pin, caused by a failure. the transmit ter output stage is released again, after a rising edge on the txd pin has been detected (see figure 12 ). figure 12 txd time-out function 7.1.3 lin specifications the lin network is standardized by international regul ations. the devices tle8458g and the tle8458gv33 are compliant to the specification lin 2.1. the physical layer specific ation lin 2.1 is a super set of the previous lin specifications, like lin 2.0 or lin 1.3. the tle8458g and the tle8458gv33 have been qualified according to the lin 2.1 standard, conformance test results are available on request. txd lin t torec t timeout normal communication normal communication txd time-out due to microcontroller error release after txd time-out recovery of the microcontroller error t t
tle8458 lin transceiver data sheet 23 rev. 1.1, 2014-04-01 7.2 electrical characteris tics of the lin transceiver table 11 electrical characteristics: lin transceiver supply v s = 7 v to 27 v, t j = -40 c +150 c, all voltages with respect to ground, positive curr ent flowing into pin (unless otherwise specified) parameter symbol values unit note / test condition number min. typ. max. voltage supply undervoltage switch-off v suv 4?5v? p_7.2.1 power-on reset level v s,uv,pon 2?4v 1) p_7.2.52 blanking time for under- voltage switch-off t uv ?10?s 1) 1) not subject to production test; specified by design. p_7.2.2 table 12 electrical characteristics: lin transceiver v s = 7 v to 27 v, t j = -40 c +150 c, r l = 500 , all voltages with respect to gro und, positive current flowing into pin (unless otherwise specified) parameter symbol values unit note / test condition number min. typ. max. receiver output (rxd pin) high level output voltage v rxd,h 0.8 v cc ??v i rxd = -1.6 ma; v bus = v s p_7.2.3 low level output voltage v rxd,l ??0.2 v cc v i rxd = 1.6 ma v bus = 0 v p_7.2.4 transmission input (txd pin) high level input voltage v txd,h 0.7 v cc ? ? v recessive state p_7.2.5 txd input hysteresis v txd,hys ? 0.12 v cc ?mv? p_7.2.6 low level input voltage v txd,l ??0.3 v cc v dominant state p_7.2.7 txd pull-down resistance r txd ? 300 ? k ? v txd = 0 v p_7.2.8 txd low level current (standby mode, after wake-up via wk) i txd,l 1.5 3 10 ma v txd = 0.9 v p_7.2.9
tle8458 lin transceiver data sheet 24 rev. 1.1, 2014-04-01 lin bus receiver (lin pin) receiver threshold voltage, recessive to dominant edge v bus,rd 0.4 v s 0.45 v s ?v v bus,rec < v bus < 27 v p_7.2.10 receiver dominant state v bus,dom ??0.4 v s v lin2.1 param. 17 p_7.2.11 receiver threshold voltage, dominant to recessive edge v bus,dr ? 0.55 v s 0.60 v s v v bus,rec < v bus < 27 v p_7.2.12 receiver recessive state v bus,rec 0.6 v s ? ? v lin2.1 param 18 p_7.2.13 receiver center voltage v bus,c 0.475 v s 0.5 v s 0.525 v s v lin2.1 param 19 p_7.2.14 receiver hysteresis v bus,hys 0.07 v s 0.1 v s 0.175 v s v v bus,hys = v bus,rec - v bus,dom lin2.1 param 20 p_7.2.15 wake-up threshold voltage v bus,wk 0.40 v s 0.5 v s 0.6 v s v? p_7.2.16 dominant time for bus wake-up t wk,bus 30 ? 150 s ? p_7.2.17 lin bus transmitter (lin pin) bus recessive output voltage v bus,ro 0.8 v s ? v s v v txd = high level p_7.2.18 bus dominant output voltage v bus,do ??1.2v v txd = 0 v; 6.0 v v s 7.3 v; p_7.2.53 bus dominant output voltage v bus,do ??0.2 x v s v v txd = 0 v; 7.3 v v s 10.0 v; p_7.2.19 bus dominant output voltage v bus,do ??2.0v v txd = 0 v; 10.0 v v s 18.0 v; p_7.2.20 bus short circuit current i bus,sc 40 100 150 ma v bus = 13.5 v; lin2.1 param 12 p_7.2.23 leakage current loss of ground i bus,lk -1000 -450 0 a v s = 0 v; v bus = -12 v; lin2.1 param 15 p_7.2.24 leakage current loss of battery i bus,lk ??5a v s = 0 v; v bus = 18 v; lin2.1 param 16 p_7.2.25 leakage current i bus,lk -1 ? ? ma v s = 18 v; v bus = 0 v; lin2.1 param 13 p_7.2.26 leakage current driver off i bus,lk ??5a v s = 8 v; v bus = 18 v; lin2.1 param 14 p_7.2.27 bus pull-up resistance r bus 20 30 47 k ? normal mode lin2.1 param 26 p_7.2.28 table 12 electrical characteristics: lin transceiver (cont?d) v s = 7 v to 27 v, t j = -40 c +150 c, r l = 500 , all voltages with respect to gro und, positive current flowing into pin (unless otherwise specified) parameter symbol values unit note / test condition number min. typ. max.
tle8458 lin transceiver data sheet 25 rev. 1.1, 2014-04-01 lin output current i bus -60 -30 -5 a sleep mode v s = 12 v; en = 0 v; v lin = 0 v p_7.2.29 lin input capacitance c bus 15 pf 1) p_7.2.55 receiver propagation delay bus dominant to rxd low t d(l),r ?16s c rxd = 20 pf; lin2.1 param 31 p_7.2.38 receiver propagation delay bus recessive to rxd high t d(h),r ?16s c rxd = 20 pf; lin2.1 param 31 p_7.2.39 receiver delay symmetry t sym,r -2 ? 2 s t sym,r = t d(l),r - t d(h),r ; lin2.1 param 32 p_7.2.40 txd dominant time out t timeout 61220ms v txd = 0 v p_7.2.44 txd dominant time out recovery time t torec ?10?s 1) p_7.2.45 duty cycle d1 (for worst case at 20 kbit/s) lin2.1 normal slope d1 0.396 ? ? 2) th rec (max) = 0.744 v s ; th dom (max) = 0.581 v s ; v s = 7.0 ? 18 v; t bit = 50 s; d1 = t bus_rec(min) /2 t bit ; lin2.1 param 27 p_7.2.46 duty cycle d2 (for worst case at 20 kbit/s) lin2.1 normal slope d2 ??0.581 2) th rec (min.) = 0.422 v s ; th dom (min.) = 0.284 v s ; v s = 7.6 ? 18 v; t bit = 50 s; d2 = t bus_rec(max) /2 t bit ; lin2.1 param 28 p_7.2.47 1) not subject to production test, specified by design. 2) bus load conditions concerning lin spec 2.1 c lin , r lin = 1 nf, 1 k ? / 6.8 nf, 660 ? / 10 nf, 500 ? table 12 electrical characteristics: lin transceiver (cont?d) v s = 7 v to 27 v, t j = -40 c +150 c, r l = 500 , all voltages with respect to gro und, positive current flowing into pin (unless otherwise specified) parameter symbol values unit note / test condition number min. typ. max.
tle8458 lin transceiver data sheet 26 rev. 1.1, 2014-04-01 figure 13 simplified test circuit for dynamic characteristics figure 14 timing diagram for dynamic characteristics gnd lin 100 nf v s c lin txd wk r lin rxd c rxd t bit t bit t bit t bus_dom(max) t bus_rec(min) thresholds of receiving node 1 thresholds of receiving node 2 th rec(max) th dom(max) th rec(min) th dom(min) t bus_dom(min) t bus_rec(max) t d(l),r(1) t d(h),r(1) t d(h),r(2) t (l),r(2) v sup (transceiver supply of transmitting node) txd (input to transmitting node) rxd (output of receiving node 1) rxd (output of receiving node 2) duty cycle 1 = t bus_rec(min) / (2 x t bit ) duty cycle 2 = t bus_rec(max) / (2 x t bit )
tle8458 application information data sheet 27 rev. 1.1, 2014-04-01 8 application information note: the following information is given as a hint for the implementation of the device only and should not be regarded as a description or warranty of a certain f unctionality, condition or quality o f the device. figure 15 application example note: this is a simplified example of an application circuit. the function must be verified in the actual application. ecu 1 txd gnd tle7259 -3ge bus 100 nf xc22xx gnd master node wk inh v s e. g. tle 4263 v q 5 v gnd inh 100 nf 22 f 22 f v i 1 k 1 nf 100 nf rxd en txd gnd tle8458 g lin xc22xx gnd slave node wk 100 nf v s rxd en v bat lin bus 22 f 220 pf vcc 10 f 100 nf ecu x 10 k 10 k
tle8458 application information data sheet 28 rev. 1.1, 2014-04-01 8.1 esd tests test for esd robustness according to iec61000-4-2 ?gun test? (150 pf, 330 ) have been performed. the results and test conditions are available in a separate test report (see table 13 ). 8.1.1 emc measurement the emc performance has been qualified by an external test house according to the lin emc test specification version 1.0 (august 1, 2004). for t he dpi measurements according to the li n emc test specification, section 4.2 (iso62132 part 1: 2006, iso62132 part 4: 2006) the verification limit for the output voltage v cc , was set to a limit of +/- 100 mv. external test reports are available on request. 8.2 pin compatibility to stand-alone lin transceivers the tle8458g is pin - and function compatible to the single lin transceivers like the tle7259-3ge (see figure 16 ). instead of the inh output pin on th e single lin transceiver tle7259-3ge the v cc power supply output can be connected to the external microcontroller. the tle8458g provides the same operation modes and features as single lin transceiver tle7259-3ge. figure 16 pinning of tle8458g versus the tle7259-3ge table 13 esd ?gun test? parameter symbol values unit note / test condition number min. typ. max. performed test esd at v s , lin versus gnd v esd,gun -10 ? 10 kv gun 1) 1) esd susceptibility ?esd gun? accord ing lin emc test specification, se ction 3.4.3 (iec 61000-4-2:2 001-12), tested by external test house (ibee zwickau, emc te st report nr . 05-12-13a) p_8.1.1 esd at wk pin v esd,gun -6 ? 6 kv gun 1) p_8.1.1 rxd 1 2 3 45 6 7 8 en wk txd v s lin gnd v cc rxd 1 2 3 45 6 7 8 en wk txd v s lin gnd inh tle8458g tle7259-3ge
tle8458 package outlines data sheet 29 rev. 1.1, 2014-04-01 9 package outlines figure 17 pg-dso-8-16 (so-8 standard, green (rohs compliant)) green product (rohs compliant) to meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. green products are rohs-compliant (i.e pb-free finish on leads and suitable for pb-free soldering according to ipc/jedec j-std-020). +0.06 0.19 0.35 x 45? 1) -0.2 4 c 8 max. 0.64 0.2 6 0.25 0.2 8x m c 1.27 +0.1 0.41 0.2 m a -0.06 1.75 max. (1.45) 0.07 0.175 b 8x b 2) index marking 5 -0.2 1) 4 1 85 a 1) does not include plastic or metal protrusion of 0.15 max. per side 2) lead width can be 0.61 max. in dambar area gps01181 0.1 for further info rmation on alternative pa ckages, please visit our website: http://www.infineon.com/packages . dimensions in mm
tle8458 revision history data sheet 30 rev. 1.1, 2014-04-01 10 revision history revision date changes 1.1 2014-04-01 all pages: - editorial changes, updated with latest infineon style guide updated compatibility wit h stand alone transce iver with tle7259-3g updated condition for parameter p_5.3.4: no load on v cc removed device versions tle8458gu and -guv33, references and description removed lin duty cycle parameters d3 and d4 (only applicatble to -gu and -guv33) chapter 8.1: u pdated esd and emc references to the latest i bee test report 1.02 2010-03-08 all pages: editorial changes table 10: changed output curr ent limitation min. to 60 ma table 11: changed power on reset values figure 15: deleted 2 resistors 1.01 2009-04-28 editorial change to the data sheet update table 13 on page 30. p_8.1.1 performed test changed from: ?esd at lin pin? to: ?esd at v s , lin versus gnd? 1.0 2009-03-23 initial data sheet
edition 2014-04-01 published by infineon technologies ag 81726 munich, germany ? 2014 infineon technologies ag all rights reserved. legal disclaimer the information given in this docu ment shall in no event be regarded as a guarantee of conditions or characteristics. with respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, infine on technologies hereby disclaims any and all warranties and liabilities of any kind, including witho ut limitation, warranties of non-infrin gement of intellectua l property rights of any third party. information for further information on technology, delivery terms and conditions and prices, please contact the nearest infineon technologies office ( www.infineon.com ). warnings due to technical requirements, components may contain dangerous substances. for information on the types in question, please contact the nearest infineon technologies office. the infineon technologies component descr ibed in this data sheet may be used in life-support devices or systems and/or automotive, aviation and aero space applications or systems only with the express written approval of infineon technologies, if a failure of such components can reasonably be expected to cause the failure of that life- support automotive, aviation and aerospace device or system or to affect the safety or effectiveness of that device or system. life support devices or syste ms are intended to be implanted in th e human body or to support and/or maintain and sustain and/or protect human life. if they fail, it is reasonable to assume that the health of the user or other persons may be endangered.

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