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PC87413 Datasheet(PDF) 160 Page - National Semiconductor (TI) |
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PC87413 Datasheet(HTML) 160 Page - National Semiconductor (TI) |
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160 / 257 page  8.0 Real-Time Clock (RTC) (Continued) www.national.com 160 Revision1.2 8.5 RTC REGISTER BITMAP 8.6 RTC GENERAL-PURPOSE RAM MAP Table 39. Standard RAM Map Table 40. Extended RAM Map Register Bits Offset Mnemonic 76543210 00h SEC Seconds Data 01h SECA Seconds Alarm Data 02h MIN Minutes Data 03h MINA Minutes Alarm Data 04h HOR Hours Data 05h HORA Hours Alarm Data 06h DOW Day-of-Week Data 07h DOM Date-of-Month Data 08h MON Month Data 09h YER Year Data 0Ah CRA Update in Progress Divider Chain Control Periodic Interrupt Rate Select 0Bh CRB SETMODE PIE AIE UIE Reserved DATMODE HRMODE DSVMODE 0Ch CRC IRQF PIF AIF UIF Reserved 0Dh CRD Valid RAM and Time Reserved Prog. DOMA Date-of-Month Alarm Data Prog. MONA Month Alarm Data Prog. CEN Century Data Index Description 0Eh - 7Fh1 1. Battery-backed 111-byte RAM (114 −3 overlaid registers). Battery-backed General-purpose 111-byte RAM. Index Description 00h - 7Fh Battery-backed General-purpose 128-byte RAM. |
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