Rainbow-electronics AT89C51SND1C Manuel d'utilisateur télécharger pdf (Page 61)

61

AT8xC51SND1C

4109E–8051–06/03

Registers Table 67. WDTRST Register

WDTRST (S:A6h Write only) – Watchdog Timer Reset Register

Reset Value = XXXX XXXXb

Figure 41. WDTPRG Register

WDTPRG (S:A7h) – Watchdog Timer Program Register

Reset Value = XXXX X000b

76543210

--------

Bit

Number

Bit

Mnemonic Description

7 - 0 - Watchdog Control Value

76543210

-----WTO2WTO1WTO0

Bit

Number

Bit

Mnemonic Description

7 - 3 -

Reserved

The value read from these bits is indeterminate. Do not set these bits.

2 - 0 WTO2:0

Watchdog Timer Time-Out Selection Bits

Refer to Table 66 for time-out periods.

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 209 210

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