描述 Description

The Microchip 25LC640A is a 64 Kb Serial EEPROM utilizing theindustry standard Serial Peripheral Interface (SPI) compatible serial bus. Thedevice is organized as one block of 8192 x 8-bit and is optimized for use in consumer electronics, industrial, medical,and automotive applications where reliable and dependable nonvolatile memorystorage is essential. Software write protection allows the user to protect ?,?, or the entire memory array. A hardware write protect pin is also provided,which additionally protects against inadvertent writes to the status register.The EEPROM is available in a variety of space-saving packaging options.

特性 Features

8192 x 8-bit (64 Kbit)
Supports SPI modes 0 and 3
Up to 10 MHz clock frequency
Self-Timed Erase and Write Cycles (5 ms max.)
Read current: 5 mA (Max) at 10 MHz
Write current: 5 mA (Max) at 10 MHz
Standby current: 5 μA (Max) at 5.5 V
Block Write Protection: Protect 1/4, 1/2 or Entire Array
More than 1 million erase/write cycles
Data retention > 200 years
Industrial (I):?-40°C to 85°C
Extended (E): -40°C to +125°C
Extended (H)2: -40°C to +150°C
Extended (M)2:?-55°C to +125°C
Automotive AECQ-100 Qualified1
Factory Programming Available
Available in standard packages including 8-lead PDIP and SOIC, and advanced packages including 8-lead MSOP, 8-lead TSSOP and 8-lead 2x3 TDFN

簡(jiǎn)介

25LC640A屬于集成電路（IC）的存儲(chǔ)器。由制造生產(chǎn)的25LC640A存儲(chǔ)器存儲(chǔ)器是集成電路上用作數(shù)據(jù)存儲(chǔ)設(shè)備的半導(dǎo)體器件。這些器件分為非易失性或易失性兩種，格式包括 CBRAM、DRAM、EEPROM、EERAM、EPROM、閃存、FRAM、NVSRAM、PCM (PRAM)、PSRAM、RAM 和 SRAM。這些器件的存儲(chǔ)容量為 64 b 至 6 Tb 不等，接口有 I2C、MMC、并行、eMMC、串行、單線、SPI、UFS、Xccela 總線和 1-線。