T89C51IC2 Datasheet | Atmel

Features - 80C52 patible - 8051 pin and instruction patible - 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 patibility Keyboard interrupt interface on port P1 400-Kbits/s Multimaster I 2C Interface SPI Interface (Master / Slave Mode) Sub clock 32k Hz 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, - pare / 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: mercial (0 to +70°C) and industrial (-40 °C to +85°C). Packages: PLC44, VQFP44 - - - - - 8-bit Microcontroller with Flash and I2C Interface - - - - - - - T89C51IC2 Summary - -...