M48T35AV-10MH1 Datasheet PDF - ST Microelectronics

●SUMMARY DESCRIPTION

●The M48T35AY/V TIMEKEEPER® RAM is a 32Kb x 8 non-volatile static RAM and real time clock. The monolithic chip is available in two special packages to provide a highly integrated battery backed-up memory and real time clock solution. The M48T35AY/V is a non-volatile pin and func

●tion 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 WRITEs that can be performed.

●FEATURES SUMMARY

●■ INTEGRATED, ULTRA LOW 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

●■ WRITE PROTECT VOLTAGES (VPFD= Power-fail Deselect Voltage):

●– M48T35AY: VCC= 4.5 to 5.5V

●4.2V ≤ VPFD ≤4.5V

●– M48T35AV: VCC= 3.0 to 3.6V

●2.7V ≤ VPFD ≤ 3.0V

●■ SELF-CONTAINED BATTERY AND CRYSTAL IN THE CAPHAT™ DIP PACKAGE

●■ SOIC PACKAGE PROVIDES DIRECT CONNECTION FOR A SNAPHAT® HOUSING CONTAINING THE BATTERY AND CRYSTAL

●■ SNAPHAT® HOUSING (BATTERY AND CRYSTAL) IS REPLACEABLE

●■ PIN AND FUNCTION COMPATIBLE WITH JEDEC STANDARD 32Kb x8 SRAMs