Product Summary

The W78E65P-40 is an 8-bit microcontroller which has an in-system programmable MTP-ROM for firmware updating. The instruction set of the W78E62B is fully compatible with the standard 8052. The W78E65P-40 contains a 64K bytes of main MTP-ROM and a 4K bytes of auxiliary MTP-ROM which allows the contents of the 64KB main MTP-ROM to be updated by the loader program located at the 4KB auxiliary MTP-ROM; 512 bytes of on-chip RAM; four 8-bit bi-directional and bit-addressable I/O ports; an additional 4-bit port P4; three 16-bit timer/counters; a serial port. These peripherals are supported by a eight sources two-level interrupt capability. To facilitate programming and verification, the MTP-ROM inside the W78E65P-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

W78E65P-40 absolute maximum ratings: (1)VDD-VSS DC Power Supply: -0.3 to +6.0 V; (2)VIN Input Voltage VSS: -0.3 to VDD +0.3 V; (3)TA Operating Temperature: 0 to 70 ℃; (4)TST Storage Temperature: -55 to +150 ℃; (5)IDD Operating Current No load VDD = 5.5V: 20 mA; (6)IIDLE Idle Current Idle mode VDD = 5.5V: 6 mA; (7)IPWDN Power Down Current Power-down mode VDD = 5.5V: 50 mA .

Features

W78E65P-40 features: (1)Fully static design 8-bit CMOS microcontroller up to 40 MHz; (2)64K bytes of in-system programmable MTP-ROM for Application Program (APROM); (3)4K bytes of auxiliary MTP-ROM for Loader Program (LDROM); (4)Low standby current at full supply voltage; (5)512 bytes of on-chip RAM. (including 256 bytes of AUX-RAM, software selectable); (6)64K bytes program memory address space and 64K bytes data memory address space; (7)Four 8-bit bi-directional ports; (8)One 4-bit multipurpose programmable port; (9)Build-in 74373 and 74244 logical functions on Port 2.(software programmable); (10)Three 16-bit timer/counters; (11)One full duplex serial port; (12)Eight-sources, two-level interrupt capability; (13)Built-in power management; (14)Code protection; (15)PACKAGE: - PLCC 44: W78E62BP-40, - LQFP 48: W78E62BD-40.

Diagrams

W78E65P-40 pin connection

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