器件名称: W77IC32-25
功能描述: 8 BIT MICROCONTROLLER
文件大小: 396.62KB 共70页
简 介:Preliminary W77IC32 8 BIT MICROCONTROLLER
GENERAL DESCRIPTION
The W77IC32 is a fast 8051 compatible microcontroller with a redesigned processor core without wasted clock and memory cycles. As a result, it executes every 8051 instruction faster than the original 8051 for the same crystal speed. Typically, the instruction executing time of W77IC32 is 1.5 to 3 times faster then that of traditional 8051, depending on the type of instruction. In general, the overall performance is about 2.5 times better than the original for the same crystal speed. Giving the same throughput with lower clock speed, power consumption has been improved. Consequently, the W77IC32 is a fully static CMOS design; it can also be operated at a lower crystal clock. W77IC32 support on-chip 1KB SRAM without external memory component and glue logic, saving more I/O pins for users application usage if they use on-chip SRAM instead of external SRAM.
FEATURES
8-bit CMOS microcontroller High speed architecture of 4 clocks/machine cycle Pin compatible with standard 80C52 Instruction-set compatible with MCS-51 Four 8-bit I/O Ports One extra 4-bit I/O port and Wait State control signal (available on 44-pin PLCC/QFP package) Three 16-bit Timers 12 interrupt sources with two levels of priority On-chip oscillator and clock circuitry Two enhanced full duplex serial ports 256 bytes scratch-pad RAM 1KB on-chip SRAM for MOVX instruction Programmable Watchdog Timer Dual 16-bit Data Pointers Software programm……
