T89C51IC2

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 VCC 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 I2C 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


Pinout




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.