AT89C51ID2 Atmel Corporation, AT89C51ID2 Datasheet - Page 74

• 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

4289C–8051–11/05
Note:
Table 57. Pin Conditions in Special Operating Modes
Down(inter
nal code)
(external
(external
(internal
Power-
Power-
Mode
Reset
code)
code)
Down
code)
Idle
Idle
pins, the instruction immediately following the instruction that activated the Power-Down
mode should not write to a Port pin or to the external RAM.
Exit from power-down by reset redefines all the
RAM content.
Floating
Floating
Floating
Port 0
Data
Data
Port 1
High
Data
Data
Data
Data
Port 2
High
Data
Data
Data
Data
Port 3
High
Data
Data
Data
Data
SFRs
, but does not affect the internal
Port 4
High
Data
Data
Data
Data
AT89C51ID2
ALE
High
High
High
Low
Low
PSEN#
High
High
High
Low
Low
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