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UPD8253-5 - PROGRAMMABLE INTERVAL TIMER

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Part number UPD8253-5
Manufacturer NEC
File Size 384.47 KB
Description PROGRAMMABLE INTERVAL TIMER
Datasheet download datasheet UPD8253-5 Datasheet
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Description

cs RD WR Al AO FUNCTION 0 1 0 0 0 Load Counter No.0 0 1 0 0 1 Load Counter No.1 0 1 0 1 0 Load Counter No.2 0 1 0 1 1 Write Mode Word 0 0 1 0 0 Read Counter No.0 0 0 1 0 1 Read Counter No.1 0 0 1 1 0 Read Counter No.2 0 0 1 1 1 No-Operation, 3-State 1 X X X X Disable, 3-State 602 0 1 1 X X No-Operation, 3-State BLOCK DIAGRAM j.LPD8253-5 r---------------------------------, I I I I I I I I I I I I I I °7,°0 : I C

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