SM8577B Datasheet (Nippon Precision Circuits Inc)

SM8577B, Real-time Clock

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 mo

SM8577B 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 sup