Rainbow Electronics T89C51IC2 - Manual

Rev. C – 3-Dec-01
1
Features
• 80C52 Compatible
– 8051 pin and instruction compatible
– Four 8-bit I/O ports + 2 I/O I2C Interface pins
– Three 16-bit timer/counters
– 256 bytes scratch pad RAM
– 10 Interrupt sources with 4 priority levels
– Dual Data Pointer
• Variable length MOVX for slow RAM/peripherals
• ISP (In System Programming) using standard V
CC
power supply.
• Boot ROM contains low level FLASH programming routines and a default serial loader
• High-Speed Architecture
– 40 MHz in standard mode
– 20 MHz in X2 mode (6 clocks/machine cycle)
• 32-Kbytes on-chip FLASH program / data Memory
– Byte and page (128 bytes) erase and write
– 10k write cycles
– On-chip 1024 bytes expanded RAM (XRAM)
– Software selectable size (0, 256, 512, 768, 1024 bytes)
– 256 bytes selected at reset for T87C51RB2/RC2 compatibility
• Keyboard interrupt interface on port P1
• 400-Kbits/s Multimaster I 2 C Interface
• SPI Interface (Master / Slave Mode)
• Sub clock 32kHz crystal oscillator
• 8-bit clock prescaler
• Improved X2 mode with independant selection for CPU and each peripheral
• Programmable Counter Array 5 Channels with:
– High Speed Output,
– Compare / Capture,
– Pulse Width Modulator,
– Watchdog Timer Capabilities
• Asynchronous port reset
• Full duplex Enhanced UART
• Dedicated Baud Rate Generator for UART
• Low EMI (inhibit ALE)
• Hardware Watchdog Timer (One-time enabled with Reset-Out)
• Power control modes:
– Idle Mode.
– Power-down mode.
– Power-Off Flag.
• Power supply: 4.5V to 5.5V or 2.7V to 3.6V
• Temperature ranges: Commercial (0 to +70 ° C) and industrial (-40 ° C to +85 ° C).
• Packages: PLC44, VQFP44
Description
T89C51IC2 is a high performance FLASH version of the 80C51 8-bit microcontrollers.
It contains a 32-Kbytes Flash memory block for program and data.
The 32-Kbytes FLASH memory can be programmed either in parallel mode or in serial
mode with the ISP capability or with software. The programming voltage is internally
generated from the standard V
CC
pin.
The T89C51IC2 retains all features of the 80C52 with 256 bytes of internal RAM, a 7-
source 4-level interrupt controller and three timer/counters.
8-bit
Microcontroller
with Flash and
I
2
C Interface
T89C51IC2
Summary