87C51BH

The 87C51 is designed as one kind of chmos single-chip 8-bit microcontroller, 87C51 has some features such as:(1)high performance CHMOS EPROM;(2)24 MHz operation;(3)improved quick-pulse programming algorithm;(4)3-level program memory lock;(5)boolean processor;(6)128-byte data RAM;(6)32 programmable I/O lines;(7)two 16-bit timer/counters;(8)extended temperature range(-40 to +85);(9)5 interrupt sources;(10)programmable serial port;(11)TTL- and CMOS-compatible logic levels;(12)64K external program memory space;(13)64K external data memory space and(14)ONCE mode facilitates system testing;(15)power control modes:idle and power down.

Absolute maximum ratings of the 87C51:(1)ambient temperature under bias:-40 to +85;(2)storage temperature:-65 to +150;(3)voltage on Vpp pin to Vss:0 V to +13.0 V;(4)voltage on any other pin to Vss:-0.5 V to +6.5 V;(5)maximum Iol per I/O pin:15 mA;(6)power dissipation:1.5 W.If you want to know more information about the 87C51,please download the datasheet in www.seekic.com and www.chinaicmart.com