M48T18-100MH1 - STMicroelectronics
Description: ■ 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 ■ Typical clock accuracy of ±1 minute a month, at 25 °C ■ Automatic power-fail chip deselect and WRITE protection ■ WRITE protect VPFD = power-fail deselect voltage): – M48T08: VCC = 4.75 to 5.5 V; 4.5 V ≤ VPFD ≤ 4.75 V – M48T18/T08Y: VCC = 4.5 to 5.5 V; 4.2 V ≤ VPFD ≤ 4.5 V ■ Software controlled clock cal
