80C51 Microcontroller - 4T

Part No.	W77L058A
Datasheet	W77LE58_W77L058A.pdf
Description	The W77L058 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 W77L058 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. The W77L058 contains 32 KB Flash EPROM, and provides operating voltage from 2.7V to 5.5V. All W77L058 types also support on-chip 1 KB 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 Wide supply voltage of 2.7V to 5.5V High speed architecture of 4 clocks/machine cycle runs up to 20 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 with two levels of priority On-chip oscillator and clock circuitry Two enhanced full duplex serial ports 32 KB Flash EPROM 256 bytes scratch-pad RAM 1 KB on-chip SRAM for MOVX instruction Programmable Watchdog Timer Dual 16-bit Data Pointers Software programmable access cycle to external RAM/peripherals
Diagram	N/A
Package	DIP40, PLCC44, PQFP44 (Lead-Free RoHS)
Other Files	N/A
Development Tools	N/A
Others	N/A

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