參數(shù)資料
型號(hào)： UPD17149GTA1
廠商： NEC Corp.
英文描述： SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述： 小，通用4位單晶片微控制器
文件頁(yè)數(shù)： 42/102頁(yè)
文件大小： 408K
代理商： UPD17149GTA1
42
μ
PD17145(A1), 17147(A1), 17149(A1)
Figure 13-3. Watchdog Timer Mode Register
Read = R, Write = W
RF : 03H
Enable watchdog timer
Stops watchdog timer.
Starts watchdog timer.
WDTEN
0
1
Resets watchdog timer
Does not affect watchdog timer.
Resets flip-flop that retains overflow carry of
BTM used for watchdog timer.
WDTRES
0
1
R/W
Remark 1.
2.
WDTEN cannot be cleared to 0 by
program.
WDTEN is automatically cleared to 0
after it has been set to 1. When it is
read, "0" is always read.
Read/write
Initial value at reset
Bit 3
WDTRES
0
Bit 2
0
0
Bit 1
0
0
Bit 0
WDTEN
0
Remark
WDTRES is automatically cleared to 0
after it has been set to 1. When it is
read, "0" is always read.
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