8254

Timer

Programmable Interval Timer, PDIP-24

Symbol

24 pins
Schematic symbol for 8254
Units
1
Kind
part
Grid
on 1.27 mm
Extends
82C54

Footprint

24 pads
Footprint for 8254
Library
Package_DIP
Mount
through_hole
Courtyard
17.34 × 30.98 mm
Link
exact

3D model

STEP

Package_DIP_DIP-24_W15.24mm

15.24 × 30.48 × 6.98 mm

746 KB STEP

Library
Package_DIP_DIP-24
Link
exact

Pins and pads

Every pin on the symbol has a pad on the footprint.

PinNameTypePad
1D7bidirectional1
2D6bidirectional2
3D5bidirectional3
4D4bidirectional4
5D3bidirectional5
6D2bidirectional6
7D1bidirectional7
8D0bidirectional8
9CLK0input9
10OUT0output10
11G0input11
12GNDpower_in12
13OUT1output13
14G1input14
15CLK1input15
16G2input16
17OUT2output17
18CLK2input18
19A0input19
20A1input20
21~{CS}input21
22~{RD}input22
23~{WR}input23
24VCCpower_in24

Provenance

Credit
KiCad Libraries Contributors
Licence
CC-BY-SA-4.0-with-KiCad-exception
Link method
exact
Cross-check
passed
8254 — Timer | Trace Catalog