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SM8577B

Nippon Precision Circuits Inc
Part Number SM8577B
Manufacturer Nippon Precision Circuits Inc
Description Real-time Clock IC
Published Apr 7, 2005
Detailed Description SM8577B NIPPON PRECISION CIRCUITS INC. Real-time Clock IC OVERVIEW The SM8577B is a CMOS serial-interface type realtim...
Datasheet PDF File SM8577B PDF File

SM8577B
SM8577B

Overview
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.
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 Unit: mm 8-pin SOP 0.
15− 0.
05 + 0.
10 4.
4 0.
2 6.
2 0.
3 5.
2 0.
3 0 to 10∞ ...


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