AT25HP256 Просмотр технического описания (PDF) - Atmel Corporation

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AT25HP256

SPI Serial EEPROMs

Atmel Corporation 

Features

• Serial Peripheral Interface (SPI) Compatible

• Supports SPI Modes 0 (0,0) and 3 (1,1)

• 10 MHz Clock Rate

• 128-Byte Page Mode Only for Write Operations

• Low-Voltage and Standard-Voltage Operation

– 5.0 (VCC = 4.5V to 5.5V)

– 2.7 (VCC = 2.7V to 5.5V)

– 1.8 (VCC = 1.8V to 3.6V)

• Block Write Protection

– Protect 1/4, 1/2, or Entire Array

• Write Protect (WP) Pin and Write Disable Instructions for

Both Hardware and Software Data Protection

• High Reliability

– Endurance: 100K Write Cycles

– Data Retention: > 40 Years

– ESD Protection: > 3000V

• 8-Pin PDIP, 8-Pin EIAJ SOIC, and 8-Pin Leadless Array Package

Description

The AT25HP256/512 provides 262,144/524,288 bits of serial electrically erasable pro-

grammable read only memory (EEPROM) organized as 32,768/65,536 words of 8-bits

each. The device is optimized for use in many industrial and commercial applications

where high-speed, low-power, and low-voltage operation are essential. The

AT25HP256/512 is available in a space saving 8-pin PDIP (AT25HP256/512), 8-pin

EIAJ SOIC (AT25HP256), and 8-pin Leadless Array (AT25HP256/512) packages. In

(continued)

SPI Serial

EEPROMs

256K (32,768 x 8)

512K (65,536 x 8)

AT25HP256

AT25HP512

Preliminary

Pin Configurations

Pin Name

CS

SCK

SI

SO

GND

VCC

WP

HOLD

Function

Chip Select

Serial Data Clock

Serial Data Input

Serial Data Output

Ground

Power Supply

Write Protect

Suspends Serial Input

8-Pin PDIP

CS 1

SO 2

WP 3

GND 4

8 VCC

7 HOLD

6 SCK

5 SI

8-Pin SOIC

CS 1

SO 2

WP 3

GND 4

8 VCC

7 HOLD

6 SCK

5 SI

8-Pin Leadless Array

VCC 8

HOLD 7

SCK 6

SI 5

1 CS

2 SO

3 WP

4 GND

Bottom View

Rev. 1113B–07/98

1

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