W921C880 데이터 시트보기 (PDF) - Winbond

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W921C880

4-BIT MICROCONTROLLER

Winbond 

W921E880A/W921C880

DTMF Generator and 8-bit D/A Converter

• One Channel DTMF Generator

• One Channel 8-bit D/A Converter

Voltage Comparator

• Four by one Channel Voltage Comparator

Serial I/O Interface

• Clock Synchronous multi-nibbles Serial Transmitter/Receiver Interface

Stack

• 8-bit Stack Pointer

Address Mode

• ROM: Indirect call addressing mode

Long jump/call addressing mode

• RAM: Direct addressing mode

Indirect addressing mode

Working reg. addressing mode

• Look-up table addressing mode

Instruction Sets

• 117 Instruction sets

Operating Voltage

• 2.8 to 5.5V operating voltage for W921E880A EPROM Type

• 2.4 to 5.5V operating voltage for W921C880 Mask ROM Type

Package Type

• Packaged in 80-pin QFP

Publication Release Date: July 1999

-5-

Revision A3

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