TLE9461ES datasheet(78/140 Pages) INFINEON

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TLE9461ES

Lite CAN SBC Family

Fail Output (FO) and General Purpose I/O (GPIO)

Datasheet

Rev.1.1

2019-09-27

•A VS_UV condition is not affecting the behavior of the GPIO.

Note:

After a short-circuit event for either low-side or high-side configuration a minimum recovery time of

25us must be ensured before enabling the respective function again!

Note:

If FO is not enabled then FO/GPIO is also not activated in case of failures. Also the FAILURE bit is set

but it can be cleared. In addition, it is not possible to activate FO/GPIO via FO_ON in this case.

Restart and Soft-Reset Behavior:

The behavior during SBC Restart and Fail-Safe Mode as well as the transition to SBC Normal Mode is as follows:

• if configured as Wake Input: it will stay wake capable during SBC Restart Mode and is an automatic wake

source in SBC Fail-Safe Mode. WK_LVL_STAT is updated but it can only be read when entering again SBC

Normal Mode.

• if configured as Low-Side or High-Side: The switch is disabled during SBC Restart and Fail-Safe Mode. They

stay Off when returning to SBC Normal Mode and can be enabled again via SPI (Restart value is ‘Off’).

• if configured as FO and activated due to a failure: FO stays activated during SBC Restart Mode and when

entering SBC Normal Mode (SPI register is not modified).

• In case of a SBC Soft Reset command the GPIO configuration remains unchanged if CFG_LOCK_0 is set but

the settings for Timer and PWM register are reset.

The detailed behavior for the respective configurations and SBC modes is listed in below table:

Note:

Above mentioned behavior also applies to the PWM operation for LS and HS and for HS Cyclic Sense

function.

Explanation of GPIO states:

• configurable: settings can be changed in this SBC mode

• fixed: settings stay as configured in SBC Normal Mode

• active: FO is activated due to a failure leading to SBC Restart or Fail-Safe Mode.

Table 22

Fail-Output and GPIO configuration behavior during the respective SBC Modes

Configuration

SBC Normal

Mode

SBC Stop Mode SBC Sleep Mode SBC Restart

Mode

SBC Fail-Safe

Mode

FO (default)

configurable

fixed

active / fixed

active

Off

Wake Input

wake capable

Low-Side

fixed

Off

High-Side

fixed

Off

TLE9461ES Datasheet(PDF) 78 Page - Infineon Technologies AG

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