AT89C51IC2 Atmel Corporation, AT89C51IC2 Datasheet - Page 144

• Manufacturer Part Number: AT89C51IC2
• Manufacturer: Atmel Corporation

Specifications of AT89C51IC2

• Flash (kbytes): 32 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Sram (kbytes): 1.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

Table of Contents
i
AT89C51IC2
Features ................................................................................................. 1
Description ............................................................................................ 2
Block Diagram ....................................................................................... 3
SFR Mapping ......................................................................................... 4
Pin Configurations .............................................................................. 10
Oscillators ........................................................................................... 14
Enhanced Features ............................................................................. 21
Dual Data Pointer Register ................................................................ 25
Expanded RAM (XRAM) ..................................................................... 27
Timer 2 ................................................................................................. 30
Programmable Counter Array PCA ................................................... 35
Serial I/O Port ...................................................................................... 47
Interrupt System ................................................................................. 58
Overview............................................................................................................. 14
Registers............................................................................................................. 14
Functional Block Diagram................................................................................... 17
Operating Modes ................................................................................................ 17
Design Considerations........................................................................................ 19
Timer 0: Clock Inputs.......................................................................................... 20
X2 Feature and OSCA Clock Generation ........................................................... 21
Auto-Reload Mode.............................................................................................. 30
Programmable Clock-Output .............................................................................. 31
PCA Capture Mode............................................................................................. 43
16-bit Software Timer/ Compare Mode............................................................... 43
High Speed Output Mode ................................................................................... 44
Pulse Width Modulator Mode.............................................................................. 45
PCA Watchdog Timer ......................................................................................... 46
Framing Error Detection ..................................................................................... 47
Automatic Address Recognition.......................................................................... 48
Baud Rate Selection for UART for mode 1 and 3............................................... 50
UART Registers.................................................................................................. 54
Registers............................................................................................................. 59
4301D–8051–02/08