25LC640T-I/SN

Features   特征

• Low-Power CMOS Technology - Write current: 3 mA, typical - Read current: 500 μA, typical - Standby current: 500 nA, typical • 8192 x 8 Bit Organization • 32 Byte Page • Write Cycle Time: 5 ms max. • Self-Timed Erase and Write Cycles • Block Write Protection - Protect none, 1/4, 1/2 or all of array • Built-in Write Protection - Power on/off data protection circuitry - Write enable latch - Write-protect pin • Sequential Read • High Reliability - Data retention: > 200 years - ESD protection: > 4000V • 8-pin PDIP, SOIC and TSSOP Packages • Temperature Ranges Supported: - Industrial (I): -40°C to +85°C - Automotive (E): -40°C to +125°C

低功耗CMOS技术-写入电流：3 mA，典型-读取电流：500μA，典型-待机电流：500 nA，典型•8192 x 8位组织•32字节页面•写入周期时间：最大5 ms•自定时擦除和写入周期•块写入保护-不保护，1/4，1/2或全部阵列•内置写保护-通电/断电数据保护电路-写使能锁存器-写保护引脚•顺序读取•高可靠性-数据保留期：>200年-ESD保护：>4000V•8引脚PDIP、SOIC和TSSOP封装•支持的温度范围：-工业（I）：-40°C至+85°C-汽车（E）：-40℃至+125°C

Description    描述

The Microchip Technology Inc. 25AA640/25LC640 (25XX640* ) is a 64 Kbit Serial Electrically Erasable PROM [EEPROM]. The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select (CS) input. Communication to the device can be paused via the hold pin (HOLD). While the device is paused, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts.

Microchip Technology股份有限公司25AA640/25LC640（25XX640*）是一种64 Kbit串行电可擦除PROM[EEPROM]。通过简单的串行外围接口（SPI）兼容串行总线访问存储器。所需的总线信号是时钟输入（SCK）加上单独的数据输入（SI）和数据输出（SO）线。通过芯片选择（CS）输入控制对设备的访问。可以通过保持引脚（hold）暂停与设备的通信。当设备暂停时，其输入上的转换将被忽略，芯片选择除外，允许主机服务更高优先级的中断。

25LC640T-I/SN

Features   特征

• Low-Power CMOS Technology - Write current: 3 mA, typical - Read current: 500 μA, typical - Standby current: 500 nA, typical • 8192 x 8 Bit Organization • 32 Byte Page • Write Cycle Time: 5 ms max. • Self-Timed Erase and Write Cycles • Block Write Protection - Protect none, 1/4, 1/2 or all of array • Built-in Write Protection - Power on/off data protection circuitry - Write enable latch - Write-protect pin • Sequential Read • High Reliability - Data retention: > 200 years - ESD protection: > 4000V • 8-pin PDIP, SOIC and TSSOP Packages • Temperature Ranges Supported: - Industrial (I): -40°C to +85°C - Automotive (E): -40°C to +125°C

低功耗CMOS技术-写入电流：3 mA，典型-读取电流：500μA，典型-待机电流：500 nA，典型•8192 x 8位组织•32字节页面•写入周期时间：最大5 ms•自定时擦除和写入周期•块写入保护-不保护，1/4，1/2或全部阵列•内置写保护-通电/断电数据保护电路-写使能锁存器-写保护引脚•顺序读取•高可靠性-数据保留期：>200年-ESD保护：>4000V•8引脚PDIP、SOIC和TSSOP封装•支持的温度范围：-工业（I）：-40°C至+85°C-汽车（E）：-40℃至+125°C

Description    描述

The Microchip Technology Inc. 25AA640/25LC640 (25XX640* ) is a 64 Kbit Serial Electrically Erasable PROM [EEPROM]. The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select (CS) input. Communication to the device can be paused via the hold pin (HOLD). While the device is paused, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts.

Microchip Technology股份有限公司25AA640/25LC640（25XX640*）是一种64 Kbit串行电可擦除PROM[EEPROM]。通过简单的串行外围接口（SPI）兼容串行总线访问存储器。所需的总线信号是时钟输入（SCK）加上单独的数据输入（SI）和数据输出（SO）线。通过芯片选择（CS）输入控制对设备的访问。可以通过保持引脚（hold）暂停与设备的通信。当设备暂停时，其输入上的转换将被忽略，芯片选择除外，允许主机服务更高优先级的中断。