W921E840 データシートの表示（PDF） - Winbond

部品番号

コンポーネント説明

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W921E840

4-BIT MICROCONTROLLER

Winbond 

W921E840A/W921C840

Addressing Mode

• ROM: Indirect call addressing mode

Long jump/call addressing mode

• RAM: Direct addressing mode

Indirect addressing mode

Working register addressing mode

• Look-up table addressing mode

Instruction Sets

• 117 instruction sets

Package Type

• 40-pin DIP, 48-pin QFP

The W921E840A/W921C840 microcontroller series are shown in the following table:

PART NO.

W921E840A/

W921C840

W921E841A/

W921C841

W921E842A/

W921C842

W921E843A/

W921C843

W921E844A/

W921C844

PACKAGE TYPE

40-pin DIP

40-pin DIP

40-pin DIP

40-pin DIP

48-pin QFP

FUNCTION

With pin PD.0, PD.1, BTG without dual clock XT , XT,

PC.0

With dual clock XT , XT, PC.0 without pin PD.0, PD.1,

BTG

With pin PD.0, PD.1, PC.0 without dual clock XT , XT,

BTG

With dual clock XT , XT, BTG without pin PD.0, PD.1,

PC.0

With pin PD.0, PD.1, PC.0, BTG, dual clock XT , XT

Publication Release Date: July 1999

-5-

Revision A3

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