參數(shù)資料
型號: ST72321BM
廠商: 意法半導體
英文描述: 80-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE(具有ICP,IAP,Nested Interrupt,TLI,ROP的8位MCU)
中文描述: 80引腳8位微控制器32至60,000閃存/ ROM,ADC的,5個定時器,SPI和SCI的I2C接口(具有比較方案,國際檢察官聯(lián)合會,嵌套中斷,中華語文研習所,人事登記的8位微控制器)
文件頁數(shù): 49/178頁
文件大?。?/td> 3121K
代理商: ST72321BM
ST72F321M, ST72321BM
49/178
WATCHDOG TIMER
(Cont’d)
9.1.4 How to Program the Watchdog Timeout
Figure 2
shows the linear relationship between the
6-bit value to be loaded in the Watchdog Counter
(CNT) and the resulting timeout duration in milli-
seconds. This can be used for a quick calculation
without taking the timing variations into account. If
more precision is needed, use the formulae in
Fig-
ure 3
.
Caution:
When writing to the WDGCR register, al-
ways write 1 in the T6 bit to avoid generating an
immediate reset.
Figure 30. Approximate Timeout Duration
C
Watchdog timeout (ms) @ 8 MHz. f
OSC2
3F
00
38
128
1.5
65
30
28
20
18
10
08
50
34
18
82
98
114
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