AT83C5122_08 ATMEL [ATMEL Corporation], AT83C5122_08 Datasheet - Page 176

• Manufacturer Part Number: AT83C5122_08
• Description: C51 Microcontroller with USB and Smart Card Reader Interfaces
• Manufacturer: ATMEL [ATMEL Corporation]

176
AT83R5122, AT8xC5122/23
Table 109. Watchdog Timer Out Register - WDTPRG (0A7h)
Reset Value = XXXX X000b
The three lower bits (S0, S1, S2) located into WDTPRG register enables to program the
WDT duration.
Table 110. Machine Cycle Count
To compute WD Timeout, the following formula must be applied:
Note:
Number
7 - 3
Bit
7
2
1
0
-
S2
0
0
0
0
1
1
1
1
Svalue represents the decimal value of (S2 S1 S0)
Mnemonic
Bit
6
S2
S1
S0
-
-
S1
0
0
1
1
0
0
1
1
Time Out = 6 * (2
Description
Reserved
The value read from this bit is indeterminate. Do not change these bits.
WDT Time-out select bit 2
WDT Time-out select bit 1
WDT Time-out select bit 0
5
-
S0
0
1
0
1
0
1
0
1
4
-
14
* 2
Svalue
3
-
- 1 ) / F
Machine Cycle Count
CK_WD
S2
2
2
2
2
2
2
2
2
2
14
15
17
18
19
20
21
16
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
S1
1
4202F–SCR–07/2008
S0
0