Datasheet > 存储 > OTP ROM> AT27C400-12PC

AT27C400-12PC

更新时间： 2024-01-25 19:14:37

品牌	Logo	应用领域
爱特美尔 - ATMEL		可编程只读存储器电动程控只读存储器
页数	文件大小	规格书
10页	188K
描述
4-Megabit 256K x 16 or 512K x 8 OTP EPROM

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AT27C400-12PC 数据手册

AT27C400

Features

• Fast Read Access Time - 70 ns

• Word-wide or Byte-wide Configurable

• 4 Megabit Flash and Mask ROM Compatible

• Low Power CMOS Operation

– 100 µA Maximum Standby

– 50 mA Maximum Active at 5 MHz

• Wide Selection of JEDEC Standard Packages

– 40-Lead 600 mil PDIP

– 40-Lead SOIC (SOP)

– 48-Lead TSOP (12 mm x 20 mm)

• 5V ± 10% Power Supply

4-Megabit

(256K x 16 or

512K x 8) OTP

EPROM

• High Reliability CMOS Technology

– 2,000V ESD Protection

– 200 mA Latchup Immunity

• Rapid^™Programming Algorithm - 50 µs/word (typical)

• CMOS and TTL Compatible Inputs and Outputs

• Integrated Product Identification Code

• Commercial and Industrial Temperature Ranges

AT27C400

Description

The AT27C400 is a low-power, high-performance 4,194,304-bit one-time programma-

ble read only memory (OTP EPROM) organized as either 256K by 16 or 512K by 8

bits. It requires a single 5V power supply in normal read mode operation. Any word

can be accessed in less than 70 ns, eliminating the need for speed-reducing WAIT

states. The by-16 organization makes this part ideal for high-performance 16- and 32-

bit microprocessor systems.

Preliminary

PDIP Top View

SOIC (SOP)

Pin Configurations

A17

40 A8

A17

40 A8

39 A9

Pin Name

A0 - A17

O0 - O15

O15/A-1

Function

38 A10

37 A11

36 A12

35 A13

34 A14

33 A15

32 A16

31 BYTE/VPP

30 GND

29 015/A-1

28 O7

38 A10

37 A11

36 A12

35 A13

34 A14

33 A15

32 A16

31 BYTE/VPP

30 GND

29 015/A-1

28 O7

Addresses

Outputs

CE 10

GND 11

OE 12

O0 13

O8 14

O1 15

O9 16

O2 17

O10 18

O3 19

O11 20

CE 10

GND 11

OE 12

O0 13

O8 14

O1 15

O9 16

O2 17

O10 18

O3 19

O11 20

Output/Address

Byte Mode/

Program Supply

27 O14

26 O6

27 O14

26 O6

BYTE/VPP

25 O13

24 O5

25 O13

24 O5

Chip Enable

Output Enable

No Connect

23 O12

22 O4

23 O12

22 O4

21 VCC

TSOP

Type 1

Note: Both GND pins must be

connected.

A15

A14

A13

A12

A11

A10

A16

BYTE/VPP

GND

015/A-1

I/O7

O14

O13

A17

O12

VCC

O11

O10

GND

0844A-A–7/97

12 3 4 5 6 7...10

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