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W78C438C

Winbond
Part Number W78C438C
Manufacturer Winbond
Description 8-BIT MICROCONTROLLER
Published Jul 9, 2017
Detailed Description W78C438C GENERAL DESCRIPTION 8-BIT MICROCONTROLLER The W78C438C is a high-performance single-chip CMOS 8-bit microcon...
Datasheet PDF File W78C438C PDF File

W78C438C
W78C438C

Overview
W78C438C GENERAL DESCRIPTION 8-BIT MICROCONTROLLER The W78C438C is a high-performance single-chip CMOS 8-bit microcontroller that is a derivative of the W78C58 microcontroller family.
The W78C438C is functionally compatible with the W78C32, except that it provides either a 64 KB program/1 MB data memory address or memory-mapped chip select logic, five general I/O ports, and four external interrupts.
In the W78C32, two I/O ports, Port 1 and Port 3, are available for general-purpose use (Port 3 also supports alternative functions), and Port 2 and Port 0 are used as the address bus and data bus, respectively.
To enable Port 0 and Port 2 to also be used as general purpose I/O ports, the W78C438C provides two dedicated address ports (AP5 and AP6) that serve as address output for 64 KB of memory and one address/data port (DP4) that serves as ROM code input and external RAM data input/output.
Unlike the W78C32, this product does not require an external latch device for multiplexing low by...


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