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W77C58 fiches techniques PDF

Winbond - 8 BIT MICROCONTROLLER

Numéro de référence W77C58
Description 8 BIT MICROCONTROLLER
Fabricant Winbond 
Logo Winbond 





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W77C58 fiche technique
Preliminary W77C58
8 BIT MICROCONTROLLER
GENERAL DESCRIPTION
The W77C58 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 W77C58 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
W77C58 is a fully static CMOS design; it can also be operated at a lower crystal clock. The W77C58
provides operating voltage from 4.5V to 5.5V. All W77C58 types also 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 runs up to 40 MHz
Pin compatible with standard 80C52
Instruction-set compatible with MCS-51
32KB on-chip Mask-ROM
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 programmable access cycle to external RAM/peripherals
Packages:
DIP 40: W77C58-25/40
PLCC 44: W77C58P-25/40
QFP 44: W77C58F-25/40
Publication Release Date: September 1999
- 1 - Revision A1

PagesPages 70
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