Datasheet > 27C04A-15P

27C04A-15P

更新时间： 2022-11-25 12:17:07

品牌	Logo	应用领域
美国微芯 - MICROCHIP		可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
8页	63K
描述
4K (512 x 8) CMOS EEPROM

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27C04A-15P 数据手册

28C04A

4K (512 x 8) CMOS EEPROM

FEATURES

PACKAGE TYPES

• Fast Read Access Time—150 ns

• CMOS Technology for Low Power Dissipation

- 30 mA Active

DIP

• 1

24 Vcc

23 A8

22 NC

21 WE

20 OE

19 NC

18 CE

17 I/O7

16 I/O6

15 I/O5

- 100 µA Standby

• Fast Byte Write Time—200 µs or 1 ms

• Data Retention >200 years

I/O0

I/O1

I/O2

• Endurance - Minimum 10 Erase/Write Cycles

- Automatic Write Operation

- Internal Control Timer

I/O4

V_SS12

13 I/O3

- Auto-Clear Before Write Operation

- On-Chip Address and Data Latches

• Data Polling

PLCC

• Chip Clear Operation

29 A8

A1 10

A0 11

28 NC

27 NC

26 NC

25 OE

24 NC

23 CE

22 I/O7

21 I/O6

• Enhanced Data Protection

- VCC Detector

- Pulse Filter

- Write Inhibit

NC 12

I/O0 13

• 5-Volt-Only Operation

• Organized 512x8 JEDEC standard pinout

- 24-pin Dual-In-Line Package

- 32-pin PLCC Package

• Pin 1 indicator on PLCC on top of package

• Available for Extended Temperature Ranges:

- Commercial: 0˚C to +70˚C

- Industrial: -40˚C to +85˚C

BLOCK DIAGRAM

I/O0

I/O7

DESCRIPTION

VSS

Data Protection

The Microchip Technology Inc. 28C04A is a CMOS 4K

non-volatile electrically Erasable and Programmable

Read Only Memory (EEPROM). The 28C04A is

accessed like a static RAM for the read or write cycles

without the need of external components. During a

“byte write”, the address and data are latched internally,

freeing the microprocessor address and data bus for

other operations. Following the initiation of write cycle,

the device will go to a busy state and automatically

clear and write the latched data using an internal con-

trol timer. To determine when a write cycle is complete,

the 28C04A uses Data polling. Data polling allows the

user to read the location last written to when the write

operation is complete. CMOS design and processing

enables this part to be used in systems where reduced

power consumption and reliability are required. A com-

plete family of packages is offered to provide the utmost

ﬂexibility in applications.

VCC

Circuitry

Chip Enable/

Output Enable

Control Logic

Input/Output

Buffers

Auto Erase/Write

Timing

Data

Poll

Program Voltage

Generation

Y Gating

Decoder

4K bit

Cell Matrix

Decoder

1996 Microchip Technology Inc.

DS11126F-page 1

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