UM82C6818

eUMC UM82C6818 f~ll =;:=::;==;;;=== RPeluasl TRiAmMe (CRlToCc)k Features Internal time base and oscillator Counts seconds, minutes, and hours of the day Counts days of the week, date, month, and year 3V to 6V operation Time base input options: 4.194304 MHz, 1.048576 MHz, or 32.768 kHz Time base osci lIator for parallel resonant crystals Binary or BCD representation of time, calendar, and alarm 12 or 24-hour clock with AM and PM in 12-hour mode automatic end of month recognition automatic leap year compensation Multiplexed bus for pin efficiency General Description The UM82C6818 Real-Time Clock plus RAM is fabricated in high performance CMOS process to interface with 1MHz processor buses. It combines three unique features: a Interfaced with software as 64 RAM locations - 14 bytes of clock and control registers - 50 bytes of general purpose RAM Status bit indicates data integrity Bus compatible interrupt signals (IRQ) Three in...