AT89C51AC3 Atmel Corporation, AT89C51AC3 Datasheet - Page 2

• 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

Block Diagram
2
AT89C51AC3
XTAL1
XTAL2
PSEN
WR
ALE
RD
EA
Notes:
CPU
1. 8 analog Inputs/8 Digital I/O
2. 5-Bit I/O Port
Timer 0
Timer 1
UART
CORE
C51
256x8
RAM
Ctrl
INT
IB-bus
64k x 8
Flash
Port 0Port 1 Port 2 Port 3
Parallel I/O Ports and Ext. Bus
loader
Boot
2kx8
PROM
2kx8
EE
ERAM
2048
Port 4
Watch
Dog
PCA
Emul
Unit
Timer2
10 bit
ADC
4383D–8051–02/08
Interface
SPI