W78C32CP-24 Просмотр технического описания (PDF) - Winbond

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W78C32CP-24

8-BIT MICROCONTROLLER

Winbond 

W78C32C

PSEN

Program Store Enable Output, active low. PSEN enables the external ROM onto the Port 0

address/data bus during fetch and MOVC operations. PSEN goes to a high state during reset with a

weak pull-up.

XTAL1

Crystal 1. This is the crystal oscillator input. This pin may be driven by an external clock.

XTAL2

Crystal 2. This is the crystal oscillator output. It is the inversion of XTAL1.

VSS, VCC

Power Supplies. These are the chip ground and positive supplies.

BLOCK DIAGRAM

RAM

256

Bytes

CPU

CORE

SFR

Data Bus

Interrupt

Timer 2

Serial

Port

Timer 0

Timer 1

INT 0

INT 1

Port 0

Port 1

Alternate

Port 2

Port 3

Alternate

-4-

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