M48T35Y-70PC1 Datasheet PDF - ST Microelectronics

The M48T35Y-70PC1 is a 32kb x 8 TIMEKEEPER® Non-volatile Static RAM and Real-time Clock. The monolithic chip is to provide a highly integrated battery-backed memory and real-time clock solution. The RAM is a non-volatile pin and function equivalent to any JEDEC standard 32kb x 8 SRAM. It also easily fits into many ROM, EPROM and EEPROM sockets providing the non-volatility of PROMs without any requirement for special write timing or limitations on the number of write that can be performed. The 28-pin, 330mil SOIC provides sockets with gold plated contacts at both ends for direct connection to a separate SNAPHAT® housing containing the battery and crystal.

● Integrated ultralow power SRAM, real-time clock, power-fail control circuit and battery

● BYTEWIDE™RAM-like clock access

● 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

● SNAPHAT® housing (battery and crystal) is replaceable

●Do not wave solder SOIC to avoid damaging SNAPHAT® sockets