Winbond Electronics Corporation W77LE532
The W77LE532 is a fast 8051 compatible microcontroller with a redesigned processor core without wasted clock and memory cycles. Typically, the instruction executing time of W77LE532 is 1.5 to 3 times faster then that of traditional 8051, depending on the type of instruction.GENERAL DESCRIPTION
As a result, it executes every 8051 instruction faster than the original 8051 for the same crystal speed. 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 W77LE532 is a fully static CMOS design; it can also be operated at a lower crystal clock. The W77LE532 contains In-System Programmable(ISP) 128 KB bank-addressed Flash EPROM; 4KB auxiliary Flash EPROM for loader program; operating voltage from 2.7V to 5.5V; on-chip 1 KB MOVX SRAM; three power saving modes. 2.FEATURES
● 8-bit CMOS microcontroller● High speed architecture of 4 clocks/machine cycle runs up to 25 MHz
● 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...