AT89C51ID2 Atmel Corporation, AT89C51ID2 Datasheet - Page 3

• 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

Block Diagram
Figure 1. Block Diagram
4289C–8051–11/05
XTALB1(1)
ALE/
XTALB2
XTALA1
XTALA2
PSEN
PROG
WR
RD
EA
(2)
(2)
CPU
(2)
(2) (2)
EUART
Timer 0
Timer 1
(2)
CORE
C51
(2) (2)
256x8
RAM
Ctrl
INT
(1): Alternate function of Port 1
(2): Alternate function of Port 3
(3): Alternate function of Port I2
IB-bus
Port 0 Port 1
Flash
64Kx8
Parallel I/O Ports &
External Bus
Port 2
1792 x 8
XRAM
Port 3
(1)
Port4
PCA
Port 5
(1)
(1)
(3) (3)
Timer2
TWI
(1)
(1) (1) (1)(1)
Keyboard
SPI
AT89C51ID2
(1)
BOOT
2K x8
ROM
Watch
Dog
POR
PFD
Regulator
POR / PFD
E² DATA
2K x 8
3