ST62P08C ST Microelectronics, ST62P08C Datasheet - Page 45

• Manufacturer Part Number: ST62P08C
• Description: (ST62P08C - ST62P20C) 8-BIT MCU
• Manufacturer: ST Microelectronics

WATCHDOG TIMER (Cont’d)
9.1.7 Register Description
WATCHDOG REGISTER (WDGR)
Address: 0D8h - Read/Write
Reset Value: 1111 1110 (FEh)
Bit 0= C Watchdog Control bit .
If the hardware option is selected (WDACT bit in
Option byte), this bit is forced high and cannot be
changed by the user (the Watchdog is always ac-
tive). When the software option is selected
(WDACT bit in Option byte), the Watchdog func-
tion is activated by setting the C bit, and cannot
then be deactivated (except by resetting the
MCU).
T0
7
T1
T2
T3
T4
T5
SR
C
0
When C is kept cleared the counter can be used
as a 7-bit timer.
0: Watchdog deactivated
1: Watchdog activated
Bit 1 = SR: Software Reset bit
Software can generate a reset by clearing this bit
while the C bit is set. When C = 0 (Watchdog de-
activated) the SR bit is the MSB of the 7-bit timer.
0: Generate (write)
1: No software reset generated, MSB of 7-bit timer
Bit 5:0 = T[5:0] Downcounter bits
Caution: These bits are reversed and shifted with
respect to the physical counter: bit-7 (T0) is the
LSB of the Watchdog downcounter and bit-2 (T5)
is the MSB.
ST6208C/ST6209C/ST6210C/ST6220C
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