STMicroelectronics 64KBIT Manuals

The M95640-125 is a 64kbit automotive serial SPI bus EEPROM with high-speed clock (10MHz) from ST.

The M24C64-125 is a 64Kbit automotive serial I2C bus EEPROM from ST company. It is compatible with all I2C bus modes, including 400 kHz fast mode and 100 kHz standard mode. The device has a 64Kbit (8K bytes) of EEPROM storage array, with a page size of 32 bytes. Write times for a byte and a page are 5 ms and 5 ms, respectively. The operating voltage is 2.5 V to 5.5 V and the operating temperature range is -40 °C to +125 °C. The device also features random and sequential read modes, whole memory array write protection, enhanced ESD/Latch-Up protection, over 1 million write cycles and over 40 years of data retention.

This document describes the M95640 and M95320 serial SPI bus EEPROMs with high-speed clock and various features. They are compatible with the SPI bus serial interface, support a single supply voltage, and have adjustable size read-only EEPROM area, byte and page write functions, and self-timed programming cycle. Additionally, they feature enhanced ESD protection, more than 100,000 or 1,000,000 erase/write cycles (depending on ordering options), and more than 40-year data retention.

The M48T58 M48T58Y 5.0V, 64 Kbit (8 Kb x 8) TIMEKEEPER® SRAM is a Toshiba integrated ultra low power SRAM, real time clock, power fail control circuit and battery product. The product has BCD coded YEAR, MONTH, DAY, DATE, HOURS, MINUTES and SECONDS; frequency test output for real time clock; automatic power fail chip deselect and write protection; write protection voltage (VPFD=power fail deselect voltage): - M48T58: VCC=4.75 to 5.5V 4.5V≤VPFD≤4.75V - M48T58Y: VCC=4.5 to 5.5V 4.2V≤VPFD≤4.5V. The product uses self-contained battery and crystal SNAPHAT™DIP package, including 28-lead SOIC and SNAPHAT®TOP (to be ordered separately). SOIC package provides direct connection to a SNAPHAT housing containing the battery and crystal, and is compatible with JEDEC standard 8Kb x 8 SRAM pins and functions.