AT25256B数据手册集成电路（IC）的存储器规格书PDF

描述 Description

The Microchip AT25256B is a 256 Kb Serial EEPROM utilizing theindustry standard Serial Peripheral Interface (SPI) compatible serial bus. Thedevice is organized as one block of 32,768 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 ¼,½, 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.

For product comparison, please consider:25AA256,25LC256

特性 Features

• 32,768 x 8-bit (256 Kbit)
• Serial Peripheral Interface (SPI) Compatible
• Supports SPI modes 0 and 3
• Up to 20 MHz clock frequency
• Self-Timed Erase and Write Cycles (5 ms max.)
• Low Power Consumption
• Read current: 7 mA (Max) at 10 MHz
• Write current: 7mA (Max) at 10 MHz
• Standby current: 3μA (Max) at 1.8V, 5μA (Max) at 5 V
• Block Write Protection: Protect 1/4, 1/2 or Entire Array
• More than 1 million erase/write cycles
• Data retention 100 years
• Temperature Ranges Available
• Automotive Grade 1: -40°C to 125°C
• Automotive Grade 2: -40°C to 105°C
• Automotive Grade 3 / Industrial: -40°C to 85°C

• Automotive AECQ-100 Qualified1
• Factory Programming Available
• Available in standard packages including 8-lead SOIC, and advanced packages including 8-lead TSSOP, 8-lead 2x3 DFN, and 8-ball VFBGA
1Consult Automotive datasheet for device specification and ordering part number

简介

AT25256B属于集成电路（IC）的存储器。由制造生产的AT25256B存储器存储器是集成电路上用作数据存储设备的半导体器件。这些器件分为非易失性或易失性两种，格式包括 CBRAM、DRAM、EEPROM、EERAM、EPROM、闪存、FRAM、NVSRAM、PCM (PRAM)、PSRAM、RAM 和 SRAM。这些器件的存储容量为 64 b 至 6 Tb 不等，接口有 I2C、MMC、并行、eMMC、串行、单线、SPI、UFS、Xccela 总线和 1-线。