Datasheet > AT34C02BN-10SU-1.7

AT34C02BN-10SU-1.7

更新时间： 2024-11-24 02:52:43

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电可擦编程只读存储器
页数	文件大小	规格书
21页	467K
描述
Two-wire Serial EEPROM with Permanent and Reversible Software Write Protect

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Features

• Permanent and Reversible Software Write Protection for the First-half of the Array

– Software Procedure to Verify Write Protect Status

• Hardware Write Protection for the Entire Array

• Low-voltage and Standard-voltage Operation

– 1.7 (V_CC= 1.7V to 3.6V)

• Internally Organized 256 x 8

• Two-wire Serial Interface

• Schmitt Trigger, Filtered Inputs for Noise Suppression

• Bidirectional Data Transfer Protocol

• 100 kHz (1.7V) and 400 kHz (2.7V and 3.6V) Compatibility

• 16-byte Page Write Modes

• Partial Page Writes Are Allowed

• Self-timed Write Cycle (5 ms max)

Two-wire Serial

EEPROM

• High-reliability

with Permanent

and Reversible

Software Write

Protect

– Endurance: 1 Million Write Cycles

– Data Retention: 100 Years

• 8-lead JEDEC SOIC, 8-lead Ultra Thin Mini-MAP (MLP 2x3), 8-lead TSSOP, and 8-ball

dBGA2 Packages

Description

The AT34C02B provides 2048 bits of serial electrically-erasable and programmable

read only memory (EEPROM) organized as 256 words of 8 bits each. The first-half of

the device incorporates a permanent and a reversible software write protection feature

while hardware write protection for the entire array is available via an external pin.

Once the permanent software write protection is enabled, by sending a special com-

mand to the device, it cannot be reversed. However, the reversible software write

protection is enabled and can be reversed by sending a special command. The hard-

ware write protection is controlled with the WP pin and can be used to protect the

entire array, whether or not the software write protection has been enabled. This

allows the user to protect none, first-half, or all of the array depending on the applica-

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

where low-power and low-voltage operations are essential. The AT34C02B is avail-

able in space saving 8-lead JEDEC SOIC, 8-lead Ultra Thin Mini-MAP (MLP 2x3), 8-lead

TSSOP, and 8-ball dBGA2 packages and is accessed via a Two-wire serial interface.

It is available in 1.7V (1.7V to 3.6V).

2K (256 x 8)

AT34C02B

Note: Not recommended for new

design; please refer to

AT34C02C datasheet.

8-ball dBGA2

8-lead Ultra Thin Mini-MAP

Table 1. Pin Configurations

Pin Name

A0 - A2

SDA

Function

VCC

Address Inputs

Serial Data

SCL

SDA

GND

SCL

SDA

GND

SCL

Serial Clock Input

Write Protect

(MLP 2x3)

Bottom View

8-lead SOIC

8-lead TSSOP

VCC

SCL

SDA

SCL

SDA

GND

Rev. 3417E–SEEPR–1/07

12 3 4 5 6 7...21

中文翻译

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