W78C438CF-40

single-chip CMOS 8-bit microcontroller, 100-pin PQFP, -0.3 to +7.0V, W78C438CF-40

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Price:: US $2.00~4.00 / piece [Get Latest Price]

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PartNumber:: W78C438CF-40

Brand:: Winbond - Winbond | Pack: DIP | D/C: 08+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
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Products Upload time: 2012-03-25

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Part Number:W78C438CF-40
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Product Summary

The W78C438CF-40 is a high-performance single-chip CMOS 8-bit microcontroller that is a derivative of the W78C58 microcontroller family. The W78C438CF-40 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 W78C438CF-40, 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 W78C438CF-40 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.

Parametrics

W78C438CF-40 absolute maximum ratings: (1)DC Power Supply, VDD-VSS: -0.3 to +7.0V; (2)Input Voltage, VIN-VSS: -0.3 VDD +0.3V; (3)Operating Temperature, TOPR: 0 to 70℃; (4)Storage Temperature, TSTG: -55 to +150℃.

Features

W78C438CF-40 features: (1)8-bit CMOS microcontroller; (2)Fully static design; (3)DC to 40 MHz operation; (4)ROM-less operation; (5)256-byte on-chip scratchpad RAM; (6)Either 64 KB program/1 MB data memory address space or 4 memory-mapped chip select pins; (7)One 8-bit data/address port; (8)Two 8-bit and one 4-bit (optional) address ports; (9)Five 8-bit bidirectional I/O ports; (10)Four 8-bit bit-addressable I/O ports and one 8-bit parallel I/O port; (11)Eight-source, two-level interrupt capability; (12)Three 16-bit timer/counters; (13)Four external interrupts; (14)One full-duplex serial channel; (15)Built-in power management; (16)Idle mode; (17)Power-down mode; (18)Packages: 100-pin PQFP.