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W78C32C

8-BIT MICROCONTROLLER

GENERAL DESCRIPTION

The W78C32C microcontroller supplies a wider frequency range than most 8-bit microcontrollers on

the market. It is compatible with the industry standard 80C32 microcontroller series.

The W78C32C contains four 8-bit bidirectional parallel ports, three 16-bit timer/counters, and a serial

port. These peripherals are supported by a six-source, two-level interrupt capability. There are 256

bytes of RAM, and the device supports ROMless operation for application programs.

The W78C32C microcontroller has two power reduction modes, idle mode and power-down mode,

both of which are software selectable. The idle mode turns off the processor clock but allows for

continued peripheral operation. The power-down mode stops the crystal oscillator for minimum power

consumption. The external clock can be stopped at any time and in any state without affecting the

1.processor.

FEATURES

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8-bit CMOS microcontroller

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Fully static design

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Low standby current at full supply voltage

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DC-40 MHz operation

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256 bytes of on-chip scratchpad RAM

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ROMless operation

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64K bytes program memory address space

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64K bytes data memory address space

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Four 8-bit bidirectional ports

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Three 16-bit timer/counters

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One full duplex serial port

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Boolean processor

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Six-source, two-level interrupt capability

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Built-in power management

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Packages:

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DIP 40: W78C32C-24/40

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PLCC 44: W78C32CP-24/40

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QFP 44: W78C32CF-24/40

-1-

Publication Release Date: July 1999

Revision A2

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