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Memory device.

27C64 64Kbit CMOS EPROM pinout

Pin	Name	Type
1	VPP	input
2	A12	input
3	A7	input
4	A6	input
5	A5	input
6	A4	input
7	A3	input
8	A2	input
9	A1	input
10	A0	input
11	D0	bidirectional
12	D1	bidirectional
13	D2	bidirectional
14	GND	ground
15	D3	bidirectional
16	D4	bidirectional
17	D5	bidirectional
18	D6	bidirectional
19	D7	bidirectional
20	~CE	input
21	A10	input
22	~OE	input
23	A11	input
24	A9	input
25	A8	input
26	NC	nc
27	~PGM	input
28	VCC	power

Schematic symbol and footprint

Schematic symbol

Footprint: DIP-28_W15.24mm — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.