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SM8578BV Datasheet(PDF) 6 Page - Nippon Precision Circuits Inc |
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SM8578BV Datasheet(HTML) 6 Page - Nippon Precision Circuits Inc |
6 / 16 page SM8578BV NIPPON PRECISION CIRCUITS INC.—6 FUNCTIONAL DESCRIPTION Register Table Address Function Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Read Write 0 Second FOS 40 20 10 8421 Yes Yes 1 Minute fr 40 20 10 8421 Yes Excl. bit 7 2 Hour fr * 20 10 8421 Yes Excl. bit 7 3 Day-of-week fr 6543210 Yes Excl. bit 7 4 Day fr * 20 10 8421 Yes Excl. bit 7 5 Month fr * * 10 8421 Yes Excl. bit 7 6 Year 80 40 20 10 8421 Yes Yes 7 Minute alarm AE 40 20 10 8421 Yes Yes 8 Hour alarm AE * 20 10 8421 Yes Yes 9 Day-of-week alarm AE 6543210 Yes Yes A Day alarm AE * 20 10 8421 Yes Yes B Frequency FE * FD4 FD3 * FD2 FD1 FD0 Yes Yes C Fixed cycle TE * TD1 TD0 **** Yes Yes D Fixed-cycle counter 128 64 32 16 8421 Yes Yes E Control 1 * * * TI/TP AF TF AIE TIE Yes Yes*1 *1. The AF and TF bits have “0” only valid write data values. Note 1. When power is applied, all register values are undefined, hence they must be initialized. Note 2. When Register D is read, the previously preset data value written to the register is read. F Control 2 * TEST * RESET HOLD * * * Yes Yes |
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