33889 datasheet(49/60 Pages) FREESCALE

tên linh kiện	33889

Giải thích chi tiết về linh kiện	System Basis Chip with Low Speed Fault Tolerant CAN Interface

PDF	60 Pages

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33889

FUNCTIONAL DEVICE OPERATION

LOGIC COMMANDS AND REGISTERS

Table 26. Watch dog

Table 27. jWatchdog operation (window and timeout)

TIM2 REGISTER

The purpose of TIM2 register is to select an appropriate timing for sensing the wake-up circuitry or cyclically supplying devices

by switching on or off HS1

Table 28. TIM2 Register

WDW

WDT1

WDT0

Watchdog timing [ms]

no window watchdog

100

350

window watchdog enabled (window lenght is

half the watchdog timing)

100

350

window closed

window open

WD timing * 50%

Watchdog period

for watchdog clear

no watchdog clear

window open

Watchdog period

for watchdog clear

(WD timing selected by TIM 1 bit WDW=1)

(WD timing selected by TIM 1, bit WDW=0)

Timeout watchdog

Window watchdog

TIM2

$101b

CSP2

CSP1

CSP0

Reset

condition

POR, RESET

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