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MCP795W21 数据表(PDF) 11 Page - Microchip Technology |
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MCP795W21 数据表(HTML) 11 Page - Microchip Technology |
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11 / 54 page  2011-2012 Microchip Technology Inc. Preliminary DS22280C-page 11 MCP795W1X/MCP795W2X 4.0 RTCC FUNCTIONALITY 4.0.1 RTCC REGISTER MAP The RTCC register space runs from 0x00 through to 0x1F. Any read or write that is started within the RTCC register address space will wrap to the beginning of the RTCC registers. All of the RTCC registers are backed up from the VBAT supply when VCC is not available, provided that the VBATEN bit is set. Any unused bits or non imple- mented addresses read back as ‘0’. No error checking is provided for any of the RTCC, the user may load any value. The RTCC register map is shown in Table 4-1. TABLE 4-1: RTCC REGISTER MAP Address BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0 FUNCTION RANGE Time and Configuration Registers 00h Tenth Seconds Hundredths of Seconds Hundredths of seconds 00-99 01h ST (CT) 10 Seconds Seconds Seconds 00-59 02h 10 Minutes Minutes Minutes 00-59 03h CALSGN 12/24 10 Hour AM/PM 10 Hour Hour Hours 1-12 + AM/PM 00 - 23 04h OSCON VBAT VBATEN Day Day 1-7 05h 10 Date Date Date 01-31 06h LP 10 Month Month Month 01-12 07h 10 Year Year Year 00-99 08h OUT SQWE ALM1 ALM0 EXTOSC RS2 RS1 RS0 Control Reg. 09h CALIBRATION Calibration 0Ah WDTEN WDTIF WDDEL WDTPLS WD3 WD2 WD1 WD0 Watchdog 0Bh EVHIF EVLIF EVEN1 EVEN0 EVWDT EVLDB EVHS1 EVHS0 Event Detect Alarm 0 Registers 0Ch 10 Seconds Seconds Seconds 00-59 0Dh 10 Minutes Minutes Minutes 00-59 0Eh 12/24 10 Hour AM/PM 10 Hours Hour Hours 1-12 + AM/PM 00-23 0Fh ALM0PIN ALM0C2 ALM0C1 ALM0C0 ALM0IF Day Day 1-7 10h 10 Date Date Date 01-31 11h 10 Month Month Month 01-12 Alarm 1 Registers 12h Tenth Seconds Hundredths of seconds Hundredths of Seconds 00-99 13h 10 Seconds Seconds Seconds 00-59 14h 10 Minutes Minutes Minutes 00-59 15h 12/24 10 Hour AM/PM 10 Hours Hour Hours 1-12 + AM/PM 00-23 16h ALM1PIN ALM1C2 ALM1C1 ALM1C0 ALM1IF Day Day 1-7 17h 10 Date Date Date 01-31 Power-Down Time-Stamp Registers 18h 10 Minutes Minutes 19h 12/24 10 Hour AM/PM 10 Hours Hour 1Ah 10 Date Date 1Bh Day 10 Month Month Power-Up Time-Stamp Registers 1Ch 10 Minutes Minutes 1Dh 12/24 10 Hour AM/PM 10 Hours Hour 1Eh 10 Date Date 1Fh Day 10 Month Month |
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