TLE9461ES datasheet(37/140 Pages) INFINEON

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TLE9461ES

Lite CAN SBC Family

System Features

Datasheet

Rev.1.1

2019-09-27

Figure 11 Cyclic Wake: Configuration and Sequence

As in Cyclic Sense, the Cyclic Wake function starts as soon as the On-time is configured. An interrupt is

generated for every start of the On-time except for the very first time when the timer is started.

5.2.3

Internal Timer

The integrated timer can be used to control the below features:

• Cyclic Wake, i.e. to wake-up the microcontroller periodically in SBC Normal, Stop and Sleep Mode

• Cyclic Sense, i.e. to perform cyclic sensing using the wake input WK/VSENSE and the GPIO configured as

HS by mapping the timer accordingly via the GPIO_CTRL register.

Following periods and On-times can be selected via the register TIMER_CTRL respectively:

• Period: 10ms, 20ms, 50ms, 100ms, 200ms, 500ms, 1s, 2s, 5s, 10s, 20s, 50s, 100s, 200s, 500s, 1000s

• On-time: 0.1ms / 0.3ms / 1.0ms / 10ms / 20ms / Off at High or Low

Note:

It is also possible to activate Cyclic Sense and Cyclic Wake at the same time with the same timer

setting

Cyclic Wake Configuration

Cyclic Wake starts / ends by

setting / clearing On-time

INTN is pulled low at every rising edge

of On-time except first one

Periods : 10ms, 20ms, 50ms, 100 ms, 200ms 500ms,

1s, 2s, 5s, 10s, 20s, 50ms, 100s, 200 s, 500s, 1000 s

On-times: any except ‘000 ' or ‘110 ' ‘111'

A new timer configuration will become active

immediately , i.e. as soon as CSN goes high

Select the Timer as a wake source in

TIMER_WK_EN, WK_CTRL_0

Select Timer Period and any

On-Time in TIMER_CTRL

No interrupt will be generated ,

if the timer is not enabled as a wake source

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