AT89C51AC3 Atmel Corporation, AT89C51AC3 Datasheet - Page 82

• Manufacturer Part Number: AT89C51AC3
• Manufacturer: Atmel Corporation

Specifications of AT89C51AC3

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 2.25
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

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AT89C51AC3
Table 45. WDTRST Register
WDTRST (S:A6h Write only)
Watchdog Timer Enable Register
Reset Value = 1111 1111b
Note:
Number
Bit
7
–
7
The WDRST register is used to reset/enable the WDT by writing 1EH then E1H in
sequence without instruction between these two sequences.
Mnemonic Description
Bit
6
–
-
Watchdog Control Value
5
–
4
–
3
–
2
–
4383D–8051–02/08
1
–
0
–