TIMEKEEPER CONTROLLER 5V, 48T201; Memory Type:Controller; Interface Type:Parallel; Memory Size:4Mbit; Memory Configuration:512K x 8bit; Time, Access:70ns; NVRAM Features:RTC; Voltage, Memory Vcc:5V; Voltage, Supply Min:4.5V; Voltage, Supply Max:5.5V; Termination Type:SMD; Case Style:SOIC; No. of Pins:44; Operating Temperature Range:0°C to +70°C; Temp, Op. Max:70°C; Temp, Op. Min:0°C; Base Number:48; IC Generic Number:48T201; Logic Function Number:48T201; Temperature Range, IC:Commercial; Time, Data Retention:10Yr