The UPD8253-5 by NEC is a PROGRAMMABLE INTERVAL TIMER. Below is the official datasheet preview.
| Part number | UPD8253-5 |
|---|---|
| Manufacturer | NEC |
| File Size | 384.47 KB |
| Description | PROGRAMMABLE INTERVAL TIMER |
| Datasheet |
 UPD8253-5-NEC.pdf
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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
📁 UPD8253-5 Similar Datasheet
