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| TOIM3000 Vishay Telefunken Integrated Interface Circuits ULC Technology: High-performance gate array package using dual metal layer CMOS technology, featuring sub-micron channel length (0.8 mm) Description The TOIM300 IC provides the proper timing for the front-end infrared transceivers of the 3000- and 4000-series, as specified by the IrDA standard. In the transmit mode, the TOIM3xxx provides IrDA compatible pulse shaping of the electrical pulses to the infrared transceiver. In the receive mode, the TOIM3000 stretches the received infrared pulses to the proper bit width at the operating bit rate. The IrDA bit rate varies between 2.4 kbit/s to 115.2 kbit/s. For the UART interface, the TOIM3000 uses the 1.8432 MHz clock input as the fast clock and the baud clock output from the UART to do the pulse stretching and shortening. The baud clock is 16 times the baud rate. The output pulses are fixed at 1.627 ms or 3/16 of bit time. The typical power consumption of both circuits is very low with about 10 mW in operational state and in the order of microwatts in standby mode. Features D Pulse shaping function (shortening and stretching) used in infrared IrDA standard applications D Directly interfaces the infrared transceivers of the 3000 and 4000 series to a UART or a micro- controller D 3 V and 5 V operation D Low operating current D SO16L package Block Diagram VCC XIN B_CLK Pulse shaper TD_IR RD_IR TD_UART RD_UART RESET GND Figure 1. Block diagram TD_232 RD_232 Document Number 82520 Rev. 1, 01-Apr-99 www.vishay.de * FaxBack +1-408-970-5600 1 TOIM3000 Vishay Telefunken Pin Assignment and Description Pin 1 Function Resets all internal registers. Initially must be HIGH to reset internal registers. When LOW, the TOIM3000 connects the UART to the IrDA transceiver. Data from the UART are transmitted by the infrared transmitter. Data received from the infrared receiver is routed to the UART. When HIGH, the TOIM3000 connects the UART to the RS232 port. Minimum hold time for reset is 1 ms. RD_UART Data channel, output to the UART TD_UART Data out channel, data input from the UART to be transmitted B_CLK 16 times baud rate clock, input from the UART (Baudout) XIN Oscillator input, 1.8432 MHz clock (to be connected to Xout pin of the UART) NC Not connected NC Not connected GND Ground in common with the UART and RS232 port S0 Must be connected to GND S1 Must be connected to GND for output pulse length of 1.627 ms, Connected to VCC for pulse length of 3/16 of bit *) TD_232 Transmit data input from the RS232 port, TXD pin RD_232 Receive data output to the RS232 port, RXD pin NC Not connected TD_IR Data output to infrared transmitter (e.g., TFDS4000) RD_IR Data receive input from the infrared transmitter (e.g., TFDS4000) VCC Supply voltage Symbol RESET I/O I Active 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 *) O I I I LOW LOW I I I O O I LOW LOW HIGH LOW The use of a pulse length of 3/16 of bit duration is not recommended when both clocks, Xout and Baudout, of the UART are available. Operation Description Features of TOIM3000 The TOIM3000 uses 2 clocks from the UART: the 1.8432 MHz clock and the Baud_out clock for its internal timing processing. Both are connected to XIN and B_CLK, respectively. The B_CLK is used as a reference for pulse stretching while XIN is taken as a time base for pulse shortening to 1.627 ms and noise filtering. Single clock operation TOIM3000 can be operated with only a single clock. In this case, the B_CLK and XIN are tied together and connected to the Baudout pin of the UART. The pulse width is then shortened to 3/16 of the bit length and noise filtering is deactivated. S1 is to be connected to VCC and S0 to GND. We strongly recommend not to use this mode because the 3/16 pulse length at lower bit rates consumes more power than the shorter pulse. At a baud rate of 9600 bit/s, the ratio of power consumption of both modes is a factor of 12 (!). The TOIM3000 interfaces additionally to an RS232 level converter through two pins, RD_232 and TD_232. These two pins provide the extra IR function that a single TOIM3000 IC can time share with both an infrared IrDA port and an RS232 port. Whenever RESET = 0, the TOIM3000 links to the infrared transceiver of the TFDS4000 series through RD_IR and TD_IR pins. On the other hand, when RESET = 1, the TOIM3000 links to the RS232 port through RD_232 and TD_232 pins (see figure 2). www.vishay.de * FaxBack +1-408-970-5600 2 Document Number 82520 Rev. 1, 01-Apr-99 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AA A A AAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AA A AAAA A A A A AA AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA AAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AA A A AAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AA A AAAA A A A A AA AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AA A A AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A **) VCC = 5 V 10% **), operating temperature 0 AAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A DC Characteristics Absolute Maximum Ratings Supply voltage Input/ output voltage all pins Output sinking current all pins Junction temperature Ambient temperature (operating) Storage temperature Soldering temperature t = 20 s @ 215C Parameter Symbol VCC Iout Tj Tamb Tstg Tsld Min. - 0.5 - 0.5 8 0 - 25 Typ. 215 Document Number 82520 Rev. 1, 01-Apr-99 Parameter Input HIGH voltage Input LOW voltage Schmitt trigger Positive threshold Negative threshold Input leakage No pull-up/ down Output HIGH voltage Output LOW voltage Current consumption Standby Dynamic Operation at VCC = 3 V is also specified. For data compare TEMIC Matra MHS ULC technology data sheet. Inputs grounded, no output load *) VCC = 5 V, T = 25C IOH = -3.2 mA IOL = + 3.2 mA VIN = VDD or GND Test Conditions X 70C Symbol VIH VIL VOH VOL VT+ VT- IL ISB IDD www.vishay.de * FaxBack +1-408-970-5600 3 Min. 2.2 2.4AAAA 0.4 1.1 Vishay Telefunken Typ. "1 2 Max. 7 VCC + 0.5 TOIM3000 125 70 85 230 Max. "5 1.4 0.8 1 Unit V V mA C C C C Unit V V mA mA mA V V V V TOIM3000 Vishay Telefunken Application R2 VCC UART OUT1 SIN SOUT XOUT BAUDOUT RESET TOIM3000 SD RD_UART TD_UART XIN B_CLK S0 S1 TD_232 RD_232 TXD RS232 RXD RD_IR TD_IR RXD TXD 83 TFDS 4000 VCC R1 R3 C1, C2 Figure 2 shows a typical example of a UART interface. As shown, XIN accepts the 1.8432 MHz input clock, and B_CLK accepts the 16 times baud rate clock. Set S1 = S0 = LOW ("0"). When RESET = 0, the TOIM3000 communicates with the infrared transceiver TFDS4000. On the other hand, if RESET = 1, the TOIM3000 communicates with the RS232 port. R1 = 2.2 kW optional, only necessary when RxD- RD_IR line is capacitive loaded, R2 = 100 W, R3 = 10 W, C1 = 6.8 mF and C2 = 0.1 mF. C1 and C2 are in parallel (VCC = 5 V, in case of 3 V supply, value of R3 should be reduced (IrDA Design Guide). Figure 2. UART interface (built-in infrared port) Table 1. Recommended Application Circuit Components Component C1 C2 R1 R2 R3 6.8 mF 0.1 F 2.2 k Recommended Value 100 10 Vishay Part Number 293D 685X9 016B 2T VJ 1206 Y 104 J XXMT CRCW-1206-2201-F-RT1 CRCW-1206-1000-F-RT1 CRCW-1206-10R0-F-RT1 www.vishay.de * FaxBack +1-408-970-5600 4 Document Number 82520 Rev. 1, 01-Apr-99 TOIM3000 Vishay Telefunken Package Information Package SO16L Dimensions in mm 10.5 10.1 9.25 8.75 7.5 7.3 2.45 2.25 0.49 0.35 8.89 16 9 0.25 0.10 0.3 0.2 10.56 10.15 1.27 technical drawings according to DIN specifications 13011 1 8 Document Number 82520 Rev. 1, 01-Apr-99 www.vishay.de * FaxBack +1-408-970-5600 5 TOIM3000 Vishay Telefunken Ozone Depleting Substances Policy Statement It is the policy of Vishay Semiconductor GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances ( ODSs ). The Montreal Protocol ( 1987 ) and its London Amendments ( 1990 ) intend to severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. Vishay Semiconductor GmbH has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2 . Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency ( EPA ) in the USA 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C ( transitional substances ) respectively. Vishay Semiconductor GmbH can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. We reserve the right to make changes to improve technical design and may do so without further notice. Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use Vishay Telefunken products for any unintended or unauthorized application, the buyer shall indemnify Vishay Telefunken against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. Vishay Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 ( 0 ) 7131 67 2831, Fax number: 49 ( 0 ) 7131 67 2423 www.vishay.de * FaxBack +1-408-970-5600 6 Document Number 82520 Rev. 1, 01-Apr-99 |
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