TSSIO16E ATMEL Corporation, TSSIO16E Datasheet

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TSSIO16E

Manufacturer Part Number
TSSIO16E
Description
Tssio16e Van Peripheral Circuit 16 Inputs-outputs
Manufacturer
ATMEL Corporation
Datasheet
1. Features
Management of 16 inputs-outputs (16-bit or two 8-bit configurable ports)
VAN protocol V4.0
3 external wired address
Safety mode in case of transmission loss
Automatic adaptation to speed of bus from 8kTS/s to 250kTS/s
CMOS 0,5 m, IO CMOS TTL compatible
Internal power-on-reset
Internal ring oscillator from 10 to 40MHz (for internal clock)
500kHz oscillator with external RC network (for safety mode clock usage)
Supply voltage 5V 10%
Typical power consomption 4mA
SO28 package
VAN Peripheral
Circuit
16 Inputs-Outputs
TSSIO16E
Rev. 4421B–ASSP–10/05

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TSSIO16E Summary of contents

Page 1

... Internal ring oscillator from 10 to 40MHz (for internal clock) • 500kHz oscillator with external RC network (for safety mode clock usage) • Supply voltage 5V 10% • Typical power consomption 4mA • SO28 package VAN Peripheral Circuit 16 Inputs-Outputs TSSIO16E Rev. 4421B–ASSP–10/05 ...

Page 2

... General Description / Block Diagram The block diagram given below shows the organization of the circuit as two blocks: the VAN con- troller (block 1), and the groups of specific functions (block 2) relative to the TSSIO16E. These are based on management of 16 inputs-outputs grouped together to form two 8-bit bi-directional programmable ports: port A and port B ...

Page 3

... RXD0 I Data_B Interrupt. Used to generate an external active safety mode. TTL 12 INT O compatible. 11 TXD O Drives the line interface circuit. TTL compatible. 10 VSS Ground. 21 VDD External power supply. description Data signal ).of the interface circuit. TTL compatible. TSSIO16E from the Data_B signal of Data signal - 3 ...

Page 4

... Functional Features Content of Identifier Field 4.1 The TSSIO16E circuit identifier field is structured as shown below. Identifier field (undecoded) The local address consists of bits I1, I2 and I3 of the identifier field for the VAN frame addressing the circuit, the Bit I1 indicates reading or writing. The table below gives the significance of these bits ...

Page 5

... DATA_A DDR_A Output byte value for port A. Defines, bit by bit, the direction of the I/O pins for port input output). Unused register, this register must be forced to 0. Reading of port A Writing of port A and B DDR_A OPT_A Reading of port A and B TSSIO16E DATA_A DDR_A ...

Page 6

... Programming and Structure of port A and B Table below summarizes the programming of a port for the corresponding bits in the DATA, DDR and OPT bytes, and shows the structural organization of the logic ports. OPT_X( TSSIO16E 6 Writing of port B Reading of port B DDR_X(n) DATA_X( ...

Page 7

... Super long time-out: 4 TOL relative 500 kHz external oscillator duration min typ T/16 30 62.5 T/4 200 250 T 900 1000 4 T 2700 4000 TSSIO16E Surveillance or mode bit Selection/status input lines the frames. 5% and Cext = 1nF 5%. The toler- max min typ 75 13 62.5 300 90 250 1150 400 1000 4650 ...

Page 8

... Automatic mode RDXi: • Automatic Transparent mode: • Forced mode: The "triple sampling correct" function (RXD0 = RXD1 = RXD2) is defined by the logic condition (RXD0 x RXD1 x RXD2) + (/RXD0 x /RXD1 x /RXD2) TSSIO16E 8 after RESET STO or MTO or LTO coherent frame VAN bus STO 7 transitions on RXi ...

Page 9

... COMMAND The peripheral becomes free of access The peripheral becomes busy with a module module which address TSSIO16E STATUS circuit in NORMAL mode circuit in SAFETY mode 14/ STATUS The peripheral is free of access The peripheral is busy with a module of address ...

Page 10

... Example: Case of a LCD display with a TSSIO16E shared simul- taneously by car radio and vehicle computer. In this case, the car radio ( inhibits access to the display line until the full mes- sage is displayed. This access control strategy is only meaningful if the computer (car radio or on-board computer) wants access to the peripheral (display) and reads the control register to ensure that the periph- eral is available ...

Page 11

... CMOS input buffer TTL compatible with pull-up (PWDF123IOTST) see protection in § 5.3 R24K DC Characteristics description min Input Low Voltage Input High Voltage 2.2 TSSIO16E max unit test conditions VDD = ports A and B not loaded max unit test conditions 0.8 V Vcc=4 ...

Page 12

... IIL IIH Isur pins PA[7..0] PB[7...0] RxD[2...0] AD[3...1] INT TXD TSSIO16E 12 CMOS input buffer TTL compatible with pull-up (PWDF123IOTST) Input leakage at Low level 137 Input leakage at High level Transitory overcurrent of 1/10 of time CMOS input/output buffer TTL compatible (PWDF000IOTST) 400 A Vcc=5. Vcc=5.5V During 500ms max 2 ...

Page 13

... A +125 oC 500 600 kHz Rext = 8.66k , Cext = 1nF High TSSIO16E test conditions Vcc=4.5V Vcc=5.5V IOL=3mA IOL=6mA IOH=6mA Vcc=5.5V Vcc=5.5V Vcc=5.5V Vcc=5.5V max duration: 1 sec EN=H Vout=Vcc Vout=Vcc during 500 ms max. during 5 ms max. and ...

Page 14

... The internal clock is the main clock which controls all the state machines. It can be the safety mode clock if the external clock H500 is connected to ground generated by a ring oscillator which frequency is given by this table: Temperature Frequency 6.4 Diagram of Input Protections The protections types are: TSSIO16E 14 min o -40 C 10Mhz 1kohm ...

Page 15

... The inputs-outputs are protected internally against overshoot and undershoot by clamping diodes. 7.5 Latch-up Inputs-outputs are immunized to latch-up according to IEA/JESD78 norm (equivalent to AEC- Q100-004rev C). The maximum injected garanteed power is 50mW. 7.6 Shortcuts The outputs are protected against shortcuts for a maximal period of 1 second. 4421B–ASSP–10/05 TSSIO16E 15 ...

Page 16

... IDEN 8.1.2 Blinkers status (reading of port PB2 - transmission RANK 16) The TSS IO16E takes over on RTR bit of the COM field: I11 I10 TSSIO16E EXT R/W RTR COM ...

Page 17

... INT can only work on port A (configured for high impedance in safety mode) 3. The unused ports PAx and PBx must be connected to ground or to Vcc via a serial resistance in order to polarize those inputs and avoid a conflict (Shortcut) in case of an output configuration. TSSIO16E +12V 1k 1.5k hood contact ...

Page 18

... Ordering Information TSSIO16E-TISA TSSIO16E-TIRA TSSIO16E-TISZ TSSIO16E-TISZ TSSIO16E 18 SO28 package SO28 package Tape and Reel SO28 package Green SO28 package Tape and Reel Green 4421B–ASSP–10/05 ...

Page 19

... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’sAtmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. © Atmel Corporation 2005. All rights reserved. Atmel are the trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Atmel Operations Memory ...

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