SM8577B - Nippon Precision Circuits Inc

SM8577B Real-time Clock IC

Number 1 2 3 Name CE DATA CLK I/O I I/O I Description Chip enable. With pull-down resistor built-in. HIGH: Enable LOW: DATA goes high impedance; input on CLK and DATA stops; and the TM bit is cleared. Data read and write input/output Serial clock input. Data is input (write mode) and output (read mode) on the rising edge of CLK. Frequency output (controlled .

Features

an output interrupt with 32 kHz or 1 Hz output frequency. It is available in 8-pin SOPs. PINOUT CE DATA CLK FOUT 1 8 VDD XTN XT VSS 8577B FEATURES s s s s s 4 5 s s s s s 2.5 to 5.5 V operating voltage range 1.0 µA at 3.0 V (typ) current consumption 3-line serial interface 1.7 ± 0.3 V supply voltage detection threshold Timer counters for second, minute, hour, day, day of the week, month, and year Automatic leap-year calendar adjustment 32.768 kHz and 1 Hz output interrupt selectable Crystal oscillator circuit built-in (CD built-in) 24-hour time mode 8-pin SOP PACKAGE DIMENSIONS Uni.