27C512 512K 45ns PLCC EPROM

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The M27C512 is a 512 Kbit EPROM offered in the two ranges UV (ultra violet erase) and OTP (one-time programmable). It is ideally suited for applications where fast turn-around and pattern experimentation are important requirements and is organized as 65,536 by 8 bits. The FDIP28W (window ceramic frit-seal package) has a transparent lid that allows the user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can then be written to the device by following the programming procedure. For applications where the content is programmed only one time and erasure is not required, the M27C512 is offered in PDIP28, PLCC32, and TSOP28 (8 x 13.4 mm) packages.

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27C512 Pinout

27C512 Pin Configuration

Pin Number	Pin Name	Description
1	DU	Data Pin
2	A15	Address Input
3	A12	Address Input
4	A7	Address Input
5	A6	Address Input
6	A5	Address Input
7	A4	Address Input
8	A3	Address Input
9	A2	Address Input
10	A1	Address Input
11	A0	Address Input
12	NC	No Connection
13	Q0	Data Output
14	Q1	Data Output
15	Q2	Data Output
16	VSS	Ground Pin
17	DU	Data Pin
18	Q3	Data Output
19	Q4	Data Output
20	Q5	Data Output
21	Q6	Data Output
22	Q7	Data Output
23	E’	Chip Enable
24	A10	Address Input
25	G’/VPP	Output Enable
26	NC	No Connection
27	A11	Address Input
28	A9	Address Input
29	A8	Address Input
30	A13	Address Input
31	A14	Address Input
32	Vcc	Positive Power Supply