参数资料
型号: ST92186B3BK
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 16-BIT, MROM, 24 MHz, MICROCONTROLLER, PDIP32
封装: PLASTIC, SDIP-32
文件页数: 120/148页
文件大小: 1664K
代理商: ST92186B3BK
Obsolete
Product(s)
- Obsolete
Product(s)
Obsolete
Product(s)
- Obsolete
Product(s)
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ST92186B - TIMER/WATCHDOG (WDT)
TIMER/WATCHDOG (Cont’d)
TIMER/WATCHDOG PRESCALER REGISTER
(WDTPR)
R250 - Read/Write
Register Page: 0
Reset value: 1111 1111 (FFh)
Bits 7:0 = PR[7:0]
Prescaler value.
A programmable value from 1 (00h) to 256 (FFh).
Warning: In order to prevent incorrect operation of
the Timer/Watchdog, the prescaler (WDTPR) and
counter (WDTRL, WDTRH) registers must be ini-
tialised before starting the Timer/Watchdog. If this
is not done, counting will start with the reset (un-in-
itialised) values.
WATCHDOG
TIMER
CONTROL
REGISTER
(WDTCR)
R251- Read/Write
Register Page: 0
Reset value: 0001 0010 (12h)
Bit 7 = ST_SP:
Start/Stop Bit.
This bit is set and cleared by software.
0: Stop counting
1: Start counting (see Warning above)
Bit 6 = S_C:
Single/Continuous.
This bit is set and cleared by software.
0: Continuous Mode
1: Single Mode
Bits 5:0 = Reserved.
Must be kept in reset state.
70
PR7
PR6
PR5
PR4
PR3
PR2
PR1
PR0
70
ST_SP
S_C
0
1
0
1
0
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