AT27BV256-70RU View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT27BV256-70RU

256K (32K x 8) Unregulated Battery-Voltage High-Speed OTP EPROM

Atmel Corporation 

Atmel’s AT27BV256 has additional features to ensure high quality and efficient production

use. The Rapid Programming Algorithm reduces the time required to program the part and

guarantees reliable programming. Programming time is typically only 100 µs/byte. The Inte-

grated Product Identification Code electronically identifies the device and manufacturer. This

feature is used by industry-standard programming equipment to select the proper program-

ming algorithms and voltages. The AT27BV256 programs exactly the same way as a standard

5V AT27C256R and uses the same programming equipment.

2. Pin Configurations

Pin Name

A0 - A14

O0 - O7

CE

OE

NC

Function

Addresses

Outputs

Chip Enable

Output Enable

No Connect

2.1 28-lead SOIC Top View

VPP 1

A12 2

A7 3

A6 4

A5 5

A4 6

A3 7

A2 8

A1 9

A0 10

O0 11

O1 12

O2 13

GND 14

28 VCC

27 A14

26 A13

25 A8

24 A9

23 A11

22 OE

21 A10

20 CE

19 O7

18 O6

17 O5

16 O4

15 O3

2.2 32-lead PLCC Top View

2.3 28-lead TSOP (Type 1) Top View

OE 22

A11 23

A9 24

A8 25

A13 26

A14 27

VCC 28

VPP 1

A12 2

A7 3

A6 4

A5 5

A4 6

A3 7

21 A10

20 CE

19 O7

18 O6

17 O5

16 O4

15 O3

14 GND

13 O2

12 O1

11 O0

10 A0

9 A1

8 A2

A6 5

A5 6

A4 7

A3 8

A2 9

A1 10

A0 11

NC 12

O0 13

29 A8

28 A9

27 A11

26 NC

25 OE

24 A10

23 CE

22 O7

21 O6

Note: PLCC package pins 1 and 17 are Don’t Connect.

2 AT27BV256

0601E–EPROM–12/07

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