SM8577B Datasheet PDF (Real-time Clock) | Download Nippon Precision Circuits Inc SM8577B

SM8577B - Real-time Clock

Description

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.

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.

Datasheet Details

Part number	SM8577B
Manufacturer	Nippon Precision Circuits Inc
File Size	78.00 KB
Description	Real-time Clock
Datasheet	SM8577B Datasheet
Additional preview pages of the SM8577B datasheet.

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Full PDF Text Transcription

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SM8577B NIPPON PRECISION CIRCUITS INC. Real-time Clock IC OVERVIEW The SM8577B is a CMOS serial-interface type realtime clock IC that operates at 32.768 kHz. It employs a 3-line serial interface to transfer time and date data. It incorporates a supply-voltage detect function to determine data validity/invalidity. It 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.

Published: Apr 7, 2005 |