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ST7265X データシート(PDF) 60 Page - STMicroelectronics

部品番号 ST7265X
部品情報  LOW-POWER, FULL-SPEED USB 8-BIT MCU WITH 32K FLASH, 5K RAM, FLASH CARD I/F, TIMER, PWM, ADC, I2C, SPI
PDF  166 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7265X データシート(HTML) 60 Page - STMicroelectronics

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WATCHDOG TIMER (Cont’d)
11.1.8 Register Description
CONTROL REGISTER (CR)
Read /Write
Reset Value: 0111 1111 (7F h)
Bit 7 = WDGA
Activation bit.
This bit is set by software and only cleared by
hardware after a reset. When WDGA = 1, the
watchdog can generate a reset.
0: Watchdog disabled
1: Watchdog enabled
Note: This bit is not used if the hardware watch-
dog option is enabled by option byte.
Bits 6:0 = T[6:0]
7-bit timer (MSB to LSB).
These bits contain the decremented value. A reset
is produced when it rolls over from 40h to 3Fh (T6
becomes cleared).
Table 18. Watchdog Timer Register Map and Reset Values
70
WDGA
T6
T5
T4T3
T2
T1T0
Address
(Hex.)
Register
Label
76
5
4
32
10
14
WDGCR
Reset Value
WDGA
0
T6
1
T5
1
T4
1
T3
1
T2
1
T1
1
T0
1
1



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