Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate

the performance, characteristics, and functions of the described products in the independent state, and are not

guarantees of the performance, characteristics, and functions of the described products as mounted in the

customer

device, the customer should always evaluate and test devices mounted in the customer

equipment.

Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to

"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,

communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be

intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace

instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety

equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case

of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee

thereof. If you should intend to use our products for applications outside the standard applications of our

customer who is considering such use and/or outside the scope of our intended standard applications, please

consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our

customer shall be solely responsible for the use.

10511 SY/51309 SY /20090414-S000003 No.NA1342-1/14

LE25LB643

Overview

The LE25LB643 is a 64Kbit EEPROM that supports serial peripheral interface (SPI). It realizes high speed operation and

high level reliability by incorporating SANYO’s high performance CMOS EEPROM technology. The interface is

compatible with SPI bus protocol, therefore, it is best suited for applications that require small-scale rewritable nonvolatile

parameter memory. Moreover, the LE25LB643 has a 32 bytes page rewrite function that provides rapid data rewriting.

Features

• Capacity

: 64Kbits (8K×8bits)

• Single supply voltage

: 1.8V to 3.6V

• Serial interface

: SPI Mode0, Mode3 supported

• Operating clock frequency

: 5MHz (2.5V to 3.6V), 3MHz (1.8V to 3.6V)

• Low current dissipation

: Standby

: 3

μA (max.)

: Active (Read)

: 1mA (max.)

: Active (Rewrite) : 3mA (max.)

• Page write function

: 32bytes

• Rewrite time

: 10ms

• Number of rewrite times

: 10

• Data retention period

: 20years

• High reliability

: Adopts SANYO’s proprietary symmetric memory array configuration (USP6947325)

Incorporates a feature to prohibit write operations under low voltage conditions.

Ordering number : ENA1342A

Serial SPI EEPROM (SPI Bus)

(64Kbit)

* This product is licensed from Silicon Storage Technology, Inc. (USA), and manufactured and sold by SANYO Semiconductor Co., Ltd.