TLE8082ES datasheet(19/61 Pages) INFINEON

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4.1.9

Afterrun watchdog (WD) safe state

In the Afterrun WD safe state, all functions are working according to their definitions. The only difference to the

Normal operation states is that ramp down is controlled by the microcontroller via SPI communication. The

bit AE is set to "1".

Table 14

Afterrun WD safe state

Function

Status

Note

Pre-regulator, 5 V Sensor supply, 5 V

Communication supply

output voltage according to Electrical

characteristics external supplies (see Table 19)

Power stages

disabled

SPI

communication enabled

normal access

Watchdog

watchdog period running, EC>4

Key input pin KEY

low

driven from outside

Reset output pin NRIO

high

4.1.10

External reset state

If an external device requests a reset at the pin NRIO, the external reset state is entered.

Table 15

External reset state

Function

Status

Note

Pre-regulator, 5 V Sensor supply, 5 V

Communication supply

output voltage according to Electrical

characteristics external supplies (see Table 19)

Power stages

disabled

SPI

communication disabled

Diag 0 register bits V5VIUV, V5VIOV, WDRES,

NRIORES according to the status of the device,

remaining reset

Watchdog

WD inactive state

Key input pin KEY

high

driven from outside

Reset output pin NRIO

low

pull down transistor

driven by V5VI

supply

TLE8082ES

Small engine management IC

Operation behavior

Datasheet

Rev. 1.0

2021-03-23

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