AT89C51ID2 Atmel Corporation, AT89C51ID2 Datasheet - Page 112

• Manufacturer Part Number: AT89C51ID2
• Manufacturer: Atmel Corporation

Specifications of AT89C51ID2

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Sram (kbytes): 2
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

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AT89C51ID2
Figure 43. Recommended EEPROM Data Write Sequence
Exec: MOVX @DPTR, A
EECON = 00h (EEE=0)
EEPROM Data Write
EEPROM Data Mapping
EECON = 02h (EEE=1)
EEPROM Mapping
Save & Disable IT
DPTR= Address
ACC= Data
Last Byte
Data Write
Sequence
to Load?
Cleared?
Restore IT
EEBusy
EA= 0
4289C–8051–11/05