AT89C5122 ATMEL [ATMEL Corporation], AT89C5122 Datasheet - Page 179

• Manufacturer Part Number: AT89C5122
• Description: MICROCONTROLLER WITH USB AND SMART CARD READER INTERFACES
• Manufacturer: ATMEL [ATMEL Corporation]

4202D–SCR–06/05
Table 111. Timeout value for
Table 112. Watchdog Timer Enable register (Write Only) - WDTRST (A6h)
Reset Value = XXXX XXXXb
The WDTRST register is used to reset / enable the WDT by writing 1EH then E1H in
sequence.
7
-
S2
0
0
0
0
1
1
1
1
6
-
S1
0
0
1
1
0
0
1
1
5
-
F
CK_WD
S0
= 24 MHz / X2
0
1
0
1
0
1
0
1
4
-
3
-
Timeout for F
2
-
131.07 ms
262.14 ms
524.29 ms
16.38 ms
32.77 ms
65.54 ms
4.10 ms
8.19 ms
CK_WD
= 24 MHz / X2
1
-
0
-
179