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GENERAL DESCRIPTION
The W77LE58 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 W77LE58 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 W77LE58 is a fully static CMOS design; it can also be operated at a lower crystal clock. The W77LE58 contains 32 KB flash Multiple-Time Programmable(MTP) ROM, and provides operating voltage from 2.7V to 5.5V. All W77LE58 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 onchip SRAM instead of external SRAM.
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 with two levels of priority
• On-chip oscillator and clock circuitry
• Two enhanced full duplex serial ports
• 32 KB flash Multiple-Time Programmable(MTP) ROM
• 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
• Packages:
- DIP 40: W77LE58-25
- PLCC 44: W77LE58P-25
- QFP 44: W77LE58F-25 -
Similar parts: 430483 , Click to view
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Datasheet
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Shopping guide
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- Last Updated: 2024/06/13 01:49 +0800
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