T89C51RB2-3CSCM

The T89C51RB2-3CSCM is designed as a high-performance flash version of the 80C51 8-bit microcontrollers. It contains a 16K or 32K byte Flash memory block for program and data. The 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 VCC pin.

T89C51RB2-3CSCM has many features. (1)80C52 compatible which means 8051 pin and instruction compatible and four 8-bit I/O ports and three 16-bit timer /counters and 256 bytes scratch pad RAM and 10 interrupt sources with 4 priority levels and dual data pointer. (2)Variable length MOVX for slow RAM /peripherals. (3)ISP (in-system programming) using standard Vcc power supply. (4)Boot ROM contains low level FLASH programming routines and a default serial loader. (5)High-speed architecture. (6)16K /32K bytes on-chip FLASH program /data memory. (7)On-chip 1024 bytes expanded RAM (XRAM). (8)Keyboard interrupt interface on port P1. (9)SPI interface (master /slave mode). (10)8-bit clock prescaler. (11)Improved X2 mode with independent selection for CPU and each peripheral. And so on.

Some absolute maximum ratings of T89C51RB2-3CSCM have been concluded into several points as follow. (1)Its operating temperature range would be from 0°C to 70°C for commercial and would be from -40°C to 85°C for industrial. (2)Its storage temperature range would be from -65°C to +150°C. (3)Its voltage on Vcc to Vss would be from -0.5V to +6.5V. (4)Its voltage on any pin to Vss would be from -0.5V to Vcc+0.5V. (5)Its power dissipation would be 1W.

Also some DC characteristics about T89C51RB2-3CSCM are concluded as follow. (1)Its input low voltage would be min -0.5V and max 0.2Vcc-0.1V. (2)Its input high voltage except RST, XTAL1 would be min 0.2Vcc+0.9V and max Vcc+0.5V. (3)Its input high voltage RST, XTAL1 would be min 0.7Vcc and max Vcc+0.5V. (4)Its output low voltage ports 1, 2, 3, 4 and 5 would be max 0.3V at Iol=100uA and max 0.45V at Iol=1.6mA and max 1.0V at Iol=3.5mA. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!