Product Summary

The W78E51BP-40 is an 8-bit microcontroller which can accommodate a wider frequency range with low power consumption. The instruction set for the W78E51BP-40 is fully compatible with the standard 8051. The W78E51BP-40 contains an 4K bytes MTP ROM (Multiple-Time Programmable ROM); a 128 bytes RAM; four 8-bit bi-directional and bit-addressable I/O ports; an additional 4-bit I/O port P4; two 16-bit timer/counters; a hardware watchdog timer and a serial port. These peripherals are supported by seven sources two-level interrupt capability. To facilitate programming and verification, the MTP-ROM inside the W78E51BP-40 allows the program memory to be programmed and read electronically. Once the code is confirmed, the user can protect the code for security.

Parametrics

W78E51BP-40 absolute maximum ratings: (1)DC Power Supply, VDD-VSS: -0.3 to +7.0 V; (2)Input Voltage, VIN: VSS -0.3 to VDD +0.3 V; (3)Operating Temperature, TA: 0 to 70℃; (4)Storage Temperature, TST: -55 to +150℃.

Features

W78E51BP-40 features: (1)Fully static design 8-bit CMOS microcontroller; (2)Wide supply voltage of 4.5V to 5.5V; (3)128 bytes of on-chip scratchpad RAM; (4)4 KB electrically erasable/programmable MTP-ROM; (5)64 KB program memory address space; (6)64 KB data memory address space; (7)Four 8-bit bi-directional ports: One extra 4-bit bit-addressable I/O port, additional INT2 / INT3 (available on 44-pin PLCC/QFP package); (8)Two 16-bit timer/counters; (9)One full duplex serial port(UART); (10)Watchdog Timer; (11)seven sources, two-level interrupt capability; (12)EMI reduction mode; (13)Built-in power management; (14)Code protection mechanism; (15)Packages: PLCC 44.

Diagrams

W78E51BP-40 block diagram

W78E051B40DL
W78E051B40DL


IC MCU 8-BIT 4K FLASH 40-DIP

Data Sheet

Negotiable 
W78E051B40FL
W78E051B40FL


IC MCU 8-BIT 4K FLASH 44-PQFP

Data Sheet

Negotiable 
W78E051B40PL
W78E051B40PL


IC MCU 8-BIT 4K FLASH 44-PLCC

Data Sheet

Negotiable 
W78E051C
W78E051C

Other


Data Sheet

Negotiable 
W78E051C40DL
W78E051C40DL


IC MCU 8-BIT 4K FLASH 40-DIP

Data Sheet

Negotiable 
W78E051C40FL
W78E051C40FL


IC MCU 8-BIT 4K FLASH 44-PQFP

Data Sheet

Negotiable