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INTEGRATED CIRCUITS
DATA SHEET
TJA1020 LIN transceiver
Product specification Supersedes data of 2001 Dec 17 2002 Jul 17
Philips Semiconductors
Product specification
LIN transceiver
FEATURES General * Baud rate up to 20 Kbaud * Very low ElectroMagnetic Emission (EME) * High ElectroMagnetic Immunity (EMI) * Low slope mode for an even further reduction of EME * Passive behaviour in unpowered state * Input levels compatible with 3.3 and 5 V devices * Integrated termination resistor for Local Interconnect Network (LIN) slave applications * Wake-up source recognition (local or remote). Low power management * Very low current consumption in sleep mode with local and remote wake-up. Protections * Transmit data (TXD) dominant time-out function * Bus terminal and battery pin protected against transients in the automotive environment (ISO7637) * Bus terminal short-circuit proof to battery and ground * Thermally protected. QUICK REFERENCE DATA SYMBOL VBAT IBAT supply voltage on pin BAT supply current on pin BAT in sleep mode supply current on pin BAT in standby mode; bus recessive supply current on pin BAT in normal slope mode; bus recessive supply current on pin BAT in normal slope mode; bus dominant VLIN Tvj Vesd(HBM) DC voltage on pin LIN virtual junction temperature electrostatic discharge voltage; human body model; pins NWAKE, LIN and BAT PARAMETER MIN. 5 1 100 100 1 -27 -40 -4 TYP. 12 3 400 400 3.5 - - - GENERAL DESCRIPTION
TJA1020
The TJA1020 is the interface between the LIN master/slave protocol controller and the physical bus in a Local Interconnect Network (LIN). It is primarily intended for in-vehicle sub-networks using baud rates from 2.4 up to 20 Kbaud. The transmit data stream of the protocol controller at the TXD input is converted by the LIN transceiver into a bus signal with controlled slew rate and wave shaping to minimize EME. The LIN bus output pin is pulled HIGH via an internal termination resistor. For a master application an external resistor in series with a diode should be connected between pin INH or pin BAT and pin LIN. The receiver detects the data stream at the LIN bus input pin and transfers it via pin RXD to the microcontroller. In normal transceiver operation the TJA1020 can be switched in the normal slope mode or the low slope mode. In the low slope mode the TJA1020 lengthens the rise and fall slopes of the LIN bus signal, thus further reducing the already very low emission in normal slope mode. In sleep mode the power consumption of the TJA1020 is very low, whereas in failure modes the power consumption is reduced to a minimum.
MAX. 27 8 1000 1000 8.0 +40 +150 +4
UNIT V A A A mA V C kV
ORDERING INFORMATION TYPE NUMBER TJA1020T TJA1020U PACKAGES NAME SO8 - DESCRIPTION plastic small outline package; 8 leads; body width 3.9 mm bare die; die dimensions 1480 x 1760 x 375 m VERSION SOT96-1 -
2002 Jul 17
2
Philips Semiconductors
Product specification
LIN transceiver
BLOCK DIAGRAM
TJA1020
handbook, full pagewidth
BAT
7 WAKE-UP TIMER CONTROL 8 INH
NWAKE
3
NSLP
2
SLEEP/ NORMAL TIMER
TEMPERATURE PROTECTION 6 LIN
4 TXD
TXD TIME-OUT TIMER
TJA1020T
1 RXD/ INT BUS TIMER FILTER 5 GND
RXD
MGU241
Fig.1 Block diagram.
PINNING SYMBOL RXD NSLP PIN 1 2 DESCRIPTION receive data output (open-drain); active LOW after a wake-up event sleep control input (active LOW); controls inhibit output; resets wake-up source flag on TXD and wake-up request on RXD local wake-up input (active LOW); negative edge triggered transmit data input; active LOW output after a local wake-up event ground LIN bus line input/output battery supply battery related inhibit output for controlling an external voltage regulator; active HIGH after a wake-up event Fig.2 Pinning diagram.
handbook, halfpage
RXD 1 NSLP 2
8 7
INH BAT LIN GND
TJA1020T
NWAKE 3 TXD 4
MGU242
NWAKE TXD GND LIN BAT INH
3 4 5 6 7 8
6 5
2002 Jul 17
3
Philips Semiconductors
Product specification
LIN transceiver
FUNCTIONAL DESCRIPTION
TJA1020
The TJA1020 is the interface between the LIN master/slave protocol controller and the physical bus in a Local Interconnect Network (LIN). The LIN transceiver is optimized for the maximum specified LIN transmission speed of 20 Kbaud providing optimum EMC performance due to wave shaping of the LIN output. Operating modes The TJA1020 provides two modes of normal operation, one intermediate mode and one very low power mode. Figure 3 shows the state diagram.
handbook, full pagewidth
STANDBY INH = HIGH TERM. = 30 k RXD = LOW trx OFF
t(NSLP = 1; after 0->1) > tgotonorm and TXD = 1
NORMAL SLOPE MODE INH = HIGH TERM. = 30 k RXD = LINDATA trx ON
(t(NWAKE = 0; after 1->0) > tNWAKE or t(LIN = 0; after 1->0) > tBUS) and NSLP = 0
t(NSLP = 1; after 0->1) > tgotonorm and TXD = 0
t(NSLP = 0; after 1->0) > tgotosleep and no wake-up event
t(NSLP = 1; after 0->1) > tgotonorm and TXD = 1
LOW SLOPE MODE INH = HIGH TERM. = 30 k RXD = LINDATA trx ON
t(NSLP = 0; after 1->0) > tgotosleep and no wake-up event
SLEEP INH = FLOATING TERM. = HIGH-OHMIC RXD = FLOATING trx OFF
t(NSLP = 1; after 0->1) > tgotonorm and TXD = 0
switching on BAT
MGU243
trx: transmitter. TERM.: slave termination resistor, connected between pins LIN and BAT.
Fig.3 State diagram.
2002 Jul 17
4
Philips Semiconductors
Product specification
LIN transceiver
Table 1 MODE Sleep Standby(1) Operating modes NSLP 0 0 TXD (OUTPUT) weak pull-down RXD floating INH HIGH TRANSMITTER off
TJA1020
REMARKS no wake-up request detected wake-up request detected; in this mode the microcontroller can read the wake-up source: remote or local wake-up notes 2, 3 and 4
floating off
weak pull-down if LOW; note 3 remote wake-up; strong pull-down if local wake-up; note 2 weak pull-down
Normal slope mode Low slope mode
1
HIGH: HIGH recessive state LOW: dominant state HIGH: HIGH recessive state LOW: dominant state
normal slope mode
1
weak pull-down
low slope mode
notes 2, 3 and 5
Notes 1. The standby mode is entered automatically upon any local or remote wake-up event during sleep mode. Pin INH and the 30 k termination resistor at pin LIN are switched on. 2. The internal wake-up source flag (set if a local wake-up did occur and fed to pin TXD) will be reset when entering normal slope or low slope mode (NSLP goes HIGH). 3. The wake-up interrupt (on pin RXD) is released when entering normal slope or low slope mode (NSLP goes HIGH). 4. The normal slope mode is entered if TXD is set HIGH (set by the microcontroller to recessive) during a positive edge on NSLP. In the event of a short-circuit to ground on pin TXD, the transmitter will be disabled. 5. The low slope mode is entered if pin TXD is pulled LOW (actively set dominant by the microcontroller or due to a failure on TXD) during the positive edge on NSLP. Sleep mode This mode is the most power saving mode of the TJA1020 and the default state after power-up (first battery supply). Despite its extreme low current consumption, the TJA1020 can still be waken up remotely via pin LIN, or waken up locally via pin NWAKE, or activated directly via pin NSLP. Filters at the inputs of the receiver (LIN), of pin NWAKE and of pin NSLP are preventing unwanted wake-up events due to automotive transients or EMI. All wake-up events have to be maintained for a certain time period (tBUS, tNWAKE and tgotonorm). The sleep mode is initiated by a falling edge on the pin NSLP driven by the microcontroller. After a filter time continuously driven sleep command (pin NSLP = LOW), pin INH becomes floating. In sleep mode the internal slave termination between pins LIN and BAT is disabled to minimize the power dissipation in case pin LIN is short-circuited to ground. Only a weak pull-up between pins LIN and BAT is present. The sleep mode can be activated independently from the actual level on pin LIN or NWAKE. So it is guaranteed that the lowest power consumption is achievable even in case of a continuous dominant level on pin LIN or a continuous LOW on pin NWAKE. Standby mode The standby mode is entered automatically whenever a local or remote wake-up occurs while the TJA1020 is in its sleep mode. These wake-up events activate pin INH and enable the slave termination resistor at the pin LIN. As a result of the HIGH condition on pin INH the voltage regulator and the microcontroller can be activated. The standby mode is signalled by a LOW level on pin RXD which can be used as an interrupt for the microcontroller. In the standby mode (pin NSLP is still LOW), the condition of pin TXD (weak pull-down or strong pull-down) indicates the wake-up source: weak pull-down for a remote wake-up request and strong pull-down for a local wake-up request.
2002 Jul 17
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Philips Semiconductors
Product specification
LIN transceiver
Setting pin NSLP HIGH during standby mode results in the following events: * An immediate reset of the wake-up source flag; thus releasing the possible strong pull-down at pin TXD before the actual mode change (after tgotonorm) is performed * A change into normal slope mode if the HIGH level on pin NSLP has been maintained for a certain time period (tgotonorm) and pin TXD is HIGH * A change into low slope mode if the HIGH level on pin NSLP has been maintained for a certain time period (tgotonorm) and pin TXD is pulled LOW by the application. In the event of a short-circuit to ground or an open-wire on pin TXD, the LIN output remains recessive (fail safe). * A reset of the wake-up request signal on pin RXD if the HIGH level on pin NSLP has been maintained for a certain time period (tgotonorm). Normal slope mode In the normal slope mode the transceiver is able to transmit and receive data via the LIN bus line. The receiver detects the data stream at the LIN bus input pin and transfers it via pin RXD to the microcontroller (see Fig.1): HIGH at a recessive level and LOW at a dominant level on the bus. The receiver has a supply voltage related threshold with hysteresis and an integrated filter to suppress bus line noise. The transmit data stream of the protocol controller at the TXD input is converted by the transmitter into a bus signal with controlled slew rate and wave shaping to minimize EME. The LIN bus output pin is pulled HIGH via an internal slave termination resistor. For a master application an external resistor in series with a diode should be connected between pin INH or BAT on one side and pin LIN on the other side. The normal slope mode is entered by a HIGH level on pin TXD and a HIGH level on pin NSLP maintained for a certain time period (tgotonorm), coming from the sleep or standby mode. The TJA1020 switches to sleep mode in case of a LOW level on pin NSLP, maintained during a certain time period (tgotosleep). Low slope mode The only difference between the normal slope mode and the low slope mode is the transmitter behaviour.
TJA1020
In the low slope mode the transmitter output stage drives the LIN bus line with lengthened rise and fall slopes. This will further reduce the already outstanding EME in the normal slope mode. The low slope mode is perfectly suited for applications where transmission speed is not critical. The mode selection is done by the LIN transceiver after a positive edge on pin NSLP, maintained for a certain time period (tgotonorm). If pin TXD is LOW at that time, the low slope mode is entered, otherwise the normal mode is entered. The transition to the low slope mode will be executed during an open pin TXD (fail-safe), a short-circuit from pin TXD to ground (fail-safe) or an intended LOW level of pin TXD programmed by the microcontroller. The transmitter is enabled after a LOW-to-HIGH transition on pin TXD. In the event of a short-circuit to ground on pin TXD, the transmitter will be disabled. Wake-up There are three ways to wake-up a TJA1020 which is in sleep mode: 1. Remote wake-up via a dominant bus state 2. Local wake-up via a negative edge at pin NWAKE 3. Mode change (pin NSLP is HIGH) from sleep mode to normal slope/low slope mode. Remote and local wake-up A falling edge at pin NWAKE followed by a LOW level maintained for a certain time period (tNWAKE) results in a local wake-up. The pin NWAKE provides an internal pull-up towards pin BAT. If, during power-up, pin NWAKE is LOW for a certain period of time (tNWAKE) this will also result in a local wake-up. A falling edge at pin LIN followed by a LOW level maintained for a certain time period (tBUS) and a rising edge at pin LIN respectively (see Fig.4) results in a remote wake-up. After a local or remote wake-up pin INH is activated (it goes HIGH) and the internal slave termination resistor is switched on. The wake-up request is indicated by a LOW active wake-up request signal on pin RXD to interrupt the microcontroller.
2002 Jul 17
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Philips Semiconductors
Product specification
LIN transceiver
Wake-up via mode transition It is also possible to set pin INH HIGH with a mode transition towards normal slope/low slope mode via pin NSLP. This is useful for applications with a continuously powered microcontroller. Wake-up source recognition The TJA1020 can distinguish between a local wake-up request on pin NWAKE and a remote wake-up request via a dominant bus state. The wake-up source flag is set in case the wake-up request was a local one. The wake-up source can be read on pin TXD in the standby mode. If an external pull-up resistor on pin TXD to the power supply voltage of the microcontroller has been added a HIGH level indicates a remote wake-up request (weak pull-down at pin TXD) and a LOW level indicates a local wake-up request (strong pull-down at pin TXD; much stronger than the external pull-up resistor). The wake-up request flag (signalled on pin RXD) as well as the wake-up source flag (signalled on pin TXD) are reset immediately, if the microcontroller sets pin NSLP HIGH. TXD dominant time-out function A `TXD Dominant Time-out' timer circuit prevents the bus line from being driven to a permanent dominant state (blocking all network communication) if pin TXD is forced permanently LOW by a hardware and/or software application failure. The timer is triggered by a negative edge on pin TXD. If the duration of the LOW level on pin TXD exceeds the internal timer value (tdom), the transmitter is disabled, driving the bus line into a recessive state. The timer is reset by a positive edge on pin TXD. Fail-safe features
TJA1020
Pin TXD provides a pull-down to GND in order to force a predefined level on input pin TXD in case the pin TXD is unsupplied. Pin NSLP provides a pull-down to GND in order to force the transceiver into sleep mode in case the pin NSLP is unsupplied. Pin RXD is set floating in case of lost power supply on pin BAT. The current of the transmitter output stage is limited in order to protect the transmitter against short-circuit to pins BAT or GND. A loss of power (pins BAT and GND) has no impact to the bus line and the microcontroller. There are no reverse currents from the bus. The LIN transceiver can be disconnected from the power supply without influencing the LIN bus. The output driver at pin LIN is protected against overtemperature conditions. If the junction temperature exceeds the shutdown junction temperature Tj(sd), the thermal protection circuit disables the output driver. The driver is enabled again if the junction temperature has been decreased below Tj(sd) and a recessive level is present at pin TXD.
2002 Jul 17
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Philips Semiconductors
Product specification
LIN transceiver
TJA1020
handbook, full pagewidth
LIN recessive
VBAT
0.6VBAT VLIN 0.4VBAT LIN dominant ground sleep mode standby mode
MBL371
tBUS
Fig.4 Wake-up behaviour.
2002 Jul 17
8
Philips Semiconductors
Product specification
LIN transceiver
TJA1020
LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 60134); all voltages are referenced to pin GND. SYMBOL VBAT VLIN VNWAKE INWAKE PARAMETER supply voltage on pin BAT DC voltage on pin LIN DC voltage on pin NWAKE current on pin NWAKE (only relevant if VNWAKE < VGND - 0.3 V; current will flow into pin GND) DC voltage on pin INH output current at pin INH transient voltage on pin LIN (ISO7637) virtual junction temperature storage temperature electrostatic discharge voltage; human body model on pins NWAKE, LIN and BAT on pins RXD, NSLP, TXD and INH Vesd(MM) Notes 1. Equivalent to discharging a 100 pF capacitor through a 1.5 k resistor. 2. Equivalent to discharging a 200 pF capacitor through a 10 resistor and a 0.75 H coil. In the event of a discharge from pin INH to pin BAT: -150 V < Vesd(MM) < +150 V. THERMAL CHARACTERISTICS According to IEC747-1. SYMBOL Rth(j-a) Rth(j-s)base PARAMETER CONDITION VALUE 145 tbf UNIT K/W K/W electrostatic discharge voltage; machine model; all pins note 2 note 1 -4 -2 -200 +4 +2 +200 kV kV V CONDITIONS MIN. -0.3 -0.3 -27 -1 -15 +7 +40 +40 - MAX. +40 UNIT V V V V mA
VTXD, VRXD, VNSLP DC voltage on pins TXD, RXD and NSLP
VINH IINH Vtrt(LIN) Tvj Tstg Vesd(HBM)
-0.3 -50 -150 -40 -55
VBAT + 0.3 +15 +100 +150 +150
V mA V C C
thermal resistance from junction to ambient in in free air SO8 package thermal resistance from junction to substrate bare die in free air
QUALITY SPECIFICATION Quality specification in accordance with "AEC - Q100".
2002 Jul 17
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Philips Semiconductors
Product specification
LIN transceiver
TJA1020
CHARACTERISTICS VBAT = 5 to 27 V; Tvj = -40 to +150 C; RL(LIN-BAT) = 500 ; all voltages are defined with respect to ground; positive currents flow into the IC; typical values are given at VBAT = 12 V; unless otherwise specified; notes 1 and 2. SYMBOL Supply IBAT supply current on pin BAT sleep mode 1 (VLIN = VBAT; VNWAKE = VBAT; VTXD = 0 V; VNSLP = 0 V) 100 standby mode; bus recessive (VINH = VBAT; VLIN = VBAT; VNWAKE = VBAT; VTXD = 0 V; VNSLP = 0 V) standby mode; bus dominant (VBAT = 12 V; VINH = 12 V; VLIN = 0 V; VNWAKE = 12 V; VTXD = 0 V; VNSLP = 0 V); note 3 300 3 8 A PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
400
1000
A
900
2000
A
100 low slope mode; bus recessive (VINH = VBAT; VLIN = VBAT; VNWAKE = VBAT; VTXD = 5 V; VNSLP = 5 V) normal slope mode; bus 100 recessive (VINH = VBAT; VLIN = VBAT; VNWAKE = VBAT; VTXD = 5 V; VNSLP = 5 V) low slope mode; bus dominant (VBAT = 12 V; VINH = 12 V; VNWAKE = 12 V; VTXD = 0 V; VNSLP = 5 V); note 3 normal slope mode; bus dominant (VBAT = 12 V; VINH = 12 V; VNWAKE = 12 V; VTXD = 0 V; VNSLP = 5 V); note 3 Pin TXD VIH VIL Vhys RTXD HIGH-level input voltage LOW-level input voltage TXD hysteresis voltage TXD pull-down resistor VTXD = 5 V 2 -0.3 0.03 125 1
400
1000
A
400
1000
A
3.5
8
mA
1
3.5
8
mA
- - - 350
7 +0.8 0.5 800
V V V k
2002 Jul 17
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Philips Semiconductors
Product specification
LIN transceiver
TJA1020
SYMBOL IIL IOL
PARAMETER LOW-level input current LOW-level output current (local wake-up request)
CONDITIONS VTXD = 0 V standby mode; VNWAKE = 0 V; VLIN = VBAT; VTXD = 0.4 V -5 1.5
MIN. 0 3
TYP. +5 -
MAX.
UNIT A mA
Pin NSLP VIH VIL Vhys RNSLP IIL IOL ILH Pin NWAKE VIH VIL IIL ILH Pin INH Rsw(INH) switch-on resistance between pins BAT and INH HIGH-level leakage current standby; low slope or normal slope mode; IINH = -15 mA; VBAT = 12 V - 30 50 HIGH-level input voltage LOW-level input voltage NWAKE pull-up current HIGH-level leakage current VNWAKE = 0 V VNWAKE = 27 V; VBAT = 27 V VBAT - 1 -0.3 -30 -5 - - -10 0 VBAT + 0.3 VBAT - 3.3 -3 +5 V V A A HIGH-level input voltage LOW-level input voltage NSLP hysteresis voltage NSLP pull-down resistor LOW-level input current VNSLP = 5 V VNSLP = 0 V 2 -0.3 0.03 125 -5 - - - 350 0 7 +0.8 0.5 800 +5 - +5 V V V k A mA A
Pin RXD (open-drain) LOW-level output current normal slope mode; 1.3 VLIN = 0 V; VRXD = 0.4 V HIGH-level leakage current normal slope mode; VLIN = VBAT; VRXD = 5 V -5 3.5 0
ILH Pin LIN Vo(reces) Vo(dom)
sleep mode; -5 VINH = 27 V; VBAT = 27 V VTXD = 5 V; ILIN = 0 mA VTXD = 0 V; VBAT = 8 to 27 V VLIN = VBAT sleep mode; VLIN = 0 V; VNSLP = 0 V standby, low slope or normal slope mode; VLIN = 0 V; VBAT = 12 V 0.9VBAT 0.6
0
+5
A
LIN recessive output voltage LIN dominant output voltage HIGH-level leakage current LIN pull-up current slave termination resistance to pin BAT
- - - 0 -5 30
VBAT 0.15VBAT 1.2 +1 -10 47
V V V A A k
VTXD = 0 V; VBAT = 7.3 V 0.6 ILH IIL RSLAVE -1 -2 20
2002 Jul 17
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Philips Semiconductors
Product specification
LIN transceiver
TJA1020
SYMBOL Io(sc)
PARAMETER short-circuit output current
CONDITIONS VLIN = VBAT = 12 V; VTXD = 0 V; t < tdom VLIN = VBAT = 27 V; VTXD = 0 V; t < tdom 27 60
MIN.
TYP. 40 90 - 0.5VBAT 0.16VBAT 60
MAX.
UNIT mA mA V V V
125 0.6VBAT 0.525VBAT 0.175VBAT
Vth(rx) Vcntr(rx) Vthr(hys)
receiver threshold voltage receiver centre voltage receiver threshold hysteresis voltage
VBAT = 7.3 to 27 V VBAT = 7.3 to 27 V VBAT = 7.3 to 27 V
0.4VBAT 0.475VBAT 0.145VBAT
Thermal shutdown Tj(sd) shutdown junction temperature 160 175 190 C
AC characteristics td(TXD-BUSon/off) TXD propagation delay failure normal slope mode; CL = 10 nF; RL = 500 ; (see Fig.5) tPropTxDom - tPropTxRec low slope mode; CL = 10 nF; RL = 500 ; (see Fig.5) tPropTxDom - tPropTxRec normal slope mode and low slope mode; CL = 0; RL = ; voltage on LIN externally forced; LIN slope time <500 ns; CRXD = 20 pF; RRXD = 2.4 k; (see Fig.5) tPropRxDom - tPropRxRec normal slope mode; CL = 10 nF; RL = 500 ; VBAT = 12 V; transition from recessive to dominant; note 4; (see Fig.5) normal slope mode; CL = 10 nF; RL = 500 ; VBAT = 12 V; transition from dominant to recessive; note 5; (see Fig.5) normal slope mode; CL = 10 nF; RL = 500 ; VBAT = 12 V; tf(slope)(dom) - tr(slope)(rec) -2 0 +2 s
td(TXD-BUSon/off)
TXD propagation delay failure
-5
0
+5
s
td(BUSon/off-RXD)
RXD propagation delay failure
-2
0
+2
s
tf(slope)(dom)
fall time LIN (100% to 0%)
-
16
27
s
tr(slope)(rec)
rise time LIN (0% to 100%)
-
16
27
s
tslope(norm)
normal slope symmetry
-5
0
+5
s
2002 Jul 17
12
Philips Semiconductors
Product specification
LIN transceiver
TJA1020
SYMBOL tf(slope)(norm)(dom)
PARAMETER
CONDITIONS
MIN.
TYP. 12
MAX. 22.5
UNIT s
normal slope fall time LIN normal slope mode; - (100% to 0%) CL = 6.8 nF; RL = 660 ; VBAT = 12 V; transition from recessive to dominant; note 4 normal slope rise time LIN (0% to 100%) - normal slope mode; CL = 6.8 nF; RL = 660 ; VBAT = 12 V; transition from dominant to recessive; note 5 normal slope mode; -4 CL = 6.8 nF; RL = 660 ; VBAT = 12 V; tf(slope)(dom) - tr(slope)(rec) low slope mode; CL = 10 nF; RL = 500 ; VBAT = 12 V; note 4 low slope mode; CL = 10 nF; RL = 500 ; VBAT = 12 V; note 5 sleep mode sleep mode -
tr(slope)(norm)(rec)
12
22.5
s
tslope(norm)
normal slope symmetry
0
+4
s
tf(slope)(low)(dom)
low slope fall time LIN (100% to 0%) low slope rise time LIN (0% to 100%) dominant time for wake-up via bus dominant time for wake-up via pin NWAKE time period for mode change from sleep or standby mode into normal/low slope mode time period for mode change from normal/low slope mode into sleep mode TXD dominant time out
30
62
s
tr(slope)(low)(rec)
-
30
62
s
tBUS tNWAKE tgotonorm
30 7 2
70 20 5
150 50 10
s s s
tgotosleep
2
5
10
s
tdom Notes
VTXD = 0 V
6
12
20
ms
1. All parameters are guaranteed over the virtual junction temperature by design, but only 100% tested at 125 C ambient temperature for dies on wafer level and above this for cased products 100% tested at 25 C ambient temperature, unless otherwise specified. 2. For bare die, all parameters are only guaranteed if the backside of the bare die is connected to ground. 3. If VBAT is higher than 12 V, the battery current increases due to the internal LIN termination resistor. The minimum V BAT - 12 V value of this resistor is 20 k. The maximum current increase is therefore: I BAT ( increase ) = ------------------------------20 k 4. ( ( t VLIN = 40% ) - ( t VLIN = 95% ) ) t f(slope)(dom) = ------------------------------------------------------------------------------------ ; see Fig.6 0.55 ( ( t VLIN = 60% ) - ( t VLIN = 5% ) ) t r(slope)(rec) = --------------------------------------------------------------------------------- ; see Fig.6 0.55 13
5.
2002 Jul 17
Philips Semiconductors
Product specification
LIN transceiver
TIMING DIAGRAMS
TJA1020
handbook, full pagewidth
TXD
50% t PropTxDom
50% t PropTxRec 100% 95%
VLIN
0.5 VBAT
0.5 VBAT
5% 0% t t PropRxDom RXD 50% t PropRxRec 50%
MGW323
Fig.5 Timing diagram for AC characteristics, bus loaded.
handbook, full pagewidth
VLIN
100% 95% 60%
40% 5% 0% t tslope(Dom) tslope(Rec)
MGU433
Fig.6 Definition of slope timing.
2002 Jul 17
14
Philips Semiconductors
Product specification
LIN transceiver
APPLICATION INFORMATION
ECU BATTERY +5 V/ +3.3 V LIN BUS LINE
TJA1020
handbook, full pagewidth
only for master node
INH VDD RX0 MICROCONTROLLER TX0 Px.x GND TXD NSLP 4 2 5 GND RXD 8 1 7
BAT NWAKE 3 1 k
TJA1020T
6 LIN
(1)
MGU244
More information is available in a separate application note. (1) Cmaster = 1 nF; Cslave = 220 pF.
Fig.7 Typical application of the TJA1020.
handbook, full pagewidth
100 nF NWAKE NSLP BAT INH RL CL
TJA1020
TXD RXD RRXD CRXD GND LIN
MGT992
Fig.8 Test circuit for AC characteristics.
2002 Jul 17
15
Philips Semiconductors
Product specification
LIN transceiver
TJA1020
handbook, full pagewidth
5V 10 k 10 k 10 F INH RXD BAT NWAKE
TJA1020
TXD 5V NSLP GND LIN
500
1 nF TRANSIENT GENERATOR
MGT993
The waveforms of the applied transients on pin 6 (LIN) and pin 7 (BAT) are according to ISO7637 part 1, test pulses 1, 2, 3a, 3b, 4, 5, 6 and 7.
Fig.9 Test circuit for automotive transients.
2002 Jul 17
16
Philips Semiconductors
Product specification
LIN transceiver
BONDING PAD LOCATIONS
TJA1020
handbook, full pagewidth
1 8 2
y
7
x
3
6
4 0
5A 5B 5C
0
MGW322
Fig.10 Bonding pad locations. Bonding pad locations (dimensions in m). All x and y co-ordinates are referenced to the bottom left hand corner of the die. CO-ORDINATES SYMBOL RXD NSLP NWAKE TXD GND1 GND2 GND3 LIN BAT INH PAD x 1 2 3 4 5A 5B 5C 6 7 8 111 111 165 134 1075 1185 1295 1318 1235 1125 y 1570 1395 424 134 90 90 90 419 1133 1490
Table 2
2002 Jul 17
17
Philips Semiconductors
Product specification
LIN transceiver
PACKAGE OUTLINE SO8: plastic small outline package; 8 leads; body width 3.9 mm
TJA1020
SOT96-1
D
E
A X
c y HE vMA
Z 8 5
Q A2 A1 pin 1 index Lp 1 e bp 4 wM L detail X (A 3) A
0
2.5 scale
5 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm inches A max. 1.75 A1 0.25 0.10 A2 1.45 1.25 A3 0.25 0.01 bp 0.49 0.36 c 0.25 0.19 D (1) 5.0 4.8 0.20 0.19 E (2) 4.0 3.8 0.16 0.15 e 1.27 HE 6.2 5.8 L 1.05 Lp 1.0 0.4 Q 0.7 0.6 v 0.25 0.01 w 0.25 0.01 y 0.1 Z (1) 0.7 0.3
0.010 0.057 0.069 0.004 0.049
0.019 0.0100 0.014 0.0075
0.244 0.039 0.028 0.050 0.041 0.228 0.016 0.024
0.028 0.004 0.012
8 0o
o
Notes 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT96-1 REFERENCES IEC 076E03 JEDEC MS-012 EIAJ EUROPEAN PROJECTION
ISSUE DATE 97-05-22 99-12-27
2002 Jul 17
18
Philips Semiconductors
Product specification
LIN transceiver
SOLDERING Introduction to soldering surface mount packages This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our "Data Handbook IC26; Integrated Circuit Packages" (document order number 9398 652 90011). There is no soldering method that is ideal for all surface mount IC packages. Wave soldering can still be used for certain surface mount ICs, but it is not suitable for fine pitch SMDs. In these situations reflow soldering is recommended. Reflow soldering Reflow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printed-circuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. Several methods exist for reflowing; for example, convection or convection/infrared heating in a conveyor type oven. Throughput times (preheating, soldering and cooling) vary between 100 and 200 seconds depending on heating method. Typical reflow peak temperatures range from 215 to 250 C. The top-surface temperature of the packages should preferable be kept below 220 C for thick/large packages, and below 235 C for small/thin packages. Wave soldering Conventional single wave soldering is not recommended for surface mount devices (SMDs) or printed-circuit boards with a high component density, as solder bridging and non-wetting can present major problems. To overcome these problems the double-wave soldering method was specifically developed.
TJA1020
If wave soldering is used the following conditions must be observed for optimal results: * Use a double-wave soldering method comprising a turbulent wave with high upward pressure followed by a smooth laminar wave. * For packages with leads on two sides and a pitch (e): - larger than or equal to 1.27 mm, the footprint longitudinal axis is preferred to be parallel to the transport direction of the printed-circuit board; - smaller than 1.27 mm, the footprint longitudinal axis must be parallel to the transport direction of the printed-circuit board. The footprint must incorporate solder thieves at the downstream end. * For packages with leads on four sides, the footprint must be placed at a 45 angle to the transport direction of the printed-circuit board. The footprint must incorporate solder thieves downstream and at the side corners. During placement and before soldering, the package must be fixed with a droplet of adhesive. The adhesive can be applied by screen printing, pin transfer or syringe dispensing. The package can be soldered after the adhesive is cured. Typical dwell time is 4 seconds at 250 C. A mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. Manual soldering Fix the component by first soldering two diagonally-opposite end leads. Use a low voltage (24 V or less) soldering iron applied to the flat part of the lead. Contact time must be limited to 10 seconds at up to 300 C. When using a dedicated tool, all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 C.
2002 Jul 17
19
Philips Semiconductors
Product specification
LIN transceiver
Suitability of surface mount IC packages for wave and reflow soldering methods PACKAGE(1) BGA, LBGA, LFBGA, SQFP, TFBGA, VFBGA HBCC, HBGA, HLQFP, HSQFP, HSOP, HTQFP, HTSSOP, HVQFN, HVSON, SMS PLCC(4), SO, SOJ LQFP, QFP, TQFP SSOP, TSSOP, VSO Notes not suitable not suitable(3)
TJA1020
SOLDERING METHOD WAVE REFLOW(2) suitable suitable suitable suitable suitable
suitable not not recommended(4)(5) recommended(6)
1. For more detailed information on the BGA packages refer to the "(LF)BGA Application Note" (AN01026); order a copy from your Philips Semiconductors sales office. 2. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum temperature (with respect to time) and body size of the package, there is a risk that internal or external package cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). For details, refer to the Drypack information in the "Data Handbook IC26; Integrated Circuit Packages; Section: Packing Methods". 3. These packages are not suitable for wave soldering. On versions with the heatsink on the bottom side, the solder cannot penetrate between the printed-circuit board and the heatsink. On versions with the heatsink on the top side, the solder might be deposited on the heatsink surface. 4. If wave soldering is considered, then the package must be placed at a 45 angle to the solder wave direction. The package footprint must incorporate solder thieves downstream and at the side corners. 5. Wave soldering is suitable for LQFP, TQFP and QFP packages with a pitch (e) larger than 0.8 mm; it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm. 6. Wave soldering is suitable for SSOP and TSSOP packages with a pitch (e) equal to or larger than 0.65 mm; it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm.
2002 Jul 17
20
Philips Semiconductors
Product specification
LIN transceiver
DATA SHEET STATUS DATA SHEET STATUS(1) Objective data PRODUCT STATUS(2) Development DEFINITIONS
TJA1020
This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specification without notice, in order to improve the design and supply the best possible product. This data sheet contains data from the product specification. Philips Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Changes will be communicated according to the Customer Product/Process Change Notification (CPCN) procedure SNW-SQ-650A.
Preliminary data
Qualification
Product data
Production
Notes 1. Please consult the most recently issued data sheet before initiating or completing a design. 2. The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
2002 Jul 17
21
Philips Semiconductors
Product specification
LIN transceiver
DEFINITIONS Short-form specification The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. DISCLAIMERS Life support applications These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.
TJA1020
Right to make changes Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no licence or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. BARE DIE DISCLAIMER All die are tested and are guaranteed to comply with all data sheet limits up to the point of wafer sawing for a period of ninety (90) days from the date of Philips' delivery. If there are data sheet limits not guaranteed, these will be separately indicated in the data sheet. There are no post packing tests performed on individual die or wafer. Philips Semiconductors has no control of third party procedures in the sawing, handling, packing or assembly of the die. Accordingly, Philips Semiconductors assumes no liability for device functionality or performance of the die or systems after third party sawing, handling, packing or assembly of the die. It is the responsibility of the customer to test and qualify their application in which the die is used.
2002 Jul 17
22
Philips Semiconductors
Product specification
LIN transceiver
NOTES
TJA1020
2002 Jul 17
23
Philips Semiconductors - a worldwide company
Contact information For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825 For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.
(c) Koninklijke Philips Electronics N.V. 2002
SCA74
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
04/pp24
Date of release: 2002
Jul 17
Document order number:
9397 750 10028

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