The 25LC128-E/SN16KVAO is a 128 Kb Serial EEPROM manufactured by Microchip Technology. It uses the industry standard Serial Peripheral Interface (SPI) compatible serial bus. Key features include a memory organization of 16,384 x 8-bit, support for SPI modes 0 and 3, a clock frequency of up to 10 MHz, self-timed erase and write cycles (5 ms max.), and low current consumption in read, write, and standby modes. It offers software and hardware write protection options. Ideal applications are in consumer electronics, industrial, medical, and automotive fields where reliable nonvolatile memory storage is crucial. It comes in an 8 - SOIC (0.154\", 3.90mm Width) package, which is space - saving and suitable for surface mount.

Benefits

• 16,384 x 8-bit (128 Kbit) memory size for sufficient data storage

• Supports SPI modes 0 and 3 for compatibility with various SPI systems

• Up to 10 MHz clock frequency enables fast data transfer

• Self - Timed Erase and Write Cycles (5 ms max.) for efficient operation

• Low read current (5 mA max. at 10 MHz), write current (5 mA max. at 10 MHz), and standby current (5 μA max. at 5.5 V) for power - conscious designs

• Block Write Protection: Protect 1/4, 1/2 or Entire Array for data security

• More than 1 million erase/write cycles for long - term reliability

• Data retention > 200 years for long - term data storage

• Wide operating temperature ranges: Industrial (I): -40°C to 85°C, Extended (E): -40°C to +125°C, Extended+ (H): -40°C to +150°C

• Automotive AECQ - 100 Qualified, suitable for automotive applications

• Factory Programming Available for convenience

• Available in multiple standard and advanced packages for different design requirements

Pinout

The 25LC128-E/SN16KVAO in its 8 - SOIC package has the following pin configuration:

• CS (Chip Select): Used to select the EEPROM for communication. When active low, enables the device to receive commands and data from the SPI master.

• SCK (Serial Clock): Provides the clock signal for SPI communication, determining the rate at which data is transferred.

• SI (Serial Input): Input pin for data sent from the SPI master to the EEPROM.

• SO (Serial Output): Output pin for data sent from the EEPROM to the SPI master.

• WP (Write Protect): When connected to ground, enables write protection for specific memory blocks or the entire array as configured.

• Hold: When held low, the device enters a hold state, pausing any ongoing operations.

• VCC: Power supply pin, accepts voltage in the range of 2.5V ~ 5.5V.

• GND: Ground pin for the device, providing the electrical reference.

Application Examples

• Consumer electronics such as smartphones, tablets for storing configuration data

• Industrial control systems for storing calibration data and system settings

• Medical devices for storing patient - specific data and device parameters

• Automotive applications like engine control units for storing diagnostic information

Compliance and Industry Certifications
The 25LC128-E/SN16KVAO is AEC - Q100 qualified, suitable for automotive applications. It can operate within a voltage range of 2.5V ~ 5.5V and an operating temperature range of -40°C ~ 125°C (TA). For other environmental compliance details, it is advisable to consult the manufacturer.