Datasheet
MCP7940M
DS22292A-page 10 Preliminary 2012 Microchip Technology Inc.
TABLE 4-1: RTCC MEMORY MAP
Address Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Function Range
Reset
State
00h ST 10 Seconds Seconds Seconds 00-59 00h
01h
10 Minutes Minutes Minutes 00-59 00h
02h
12/24
10 Hour
AM/PM
10 Hour Hour Hours 1-12 + AM/PM
00 - 23
00h
03h
OSCON Day Day 1-7 01h
04h
10 Date Date Date 01-31 01h
05h
LP 10 Month Month Month 01-12 01h
06h 10 Year Year Year 00-99 01h
07h OUT SQWE ALM1 ALM0 EXTOSC RS2 RS1 RS0 Control Reg. 80h
08h CALIBRATION Calibration 00h
09h Reserved – Do Not Use 00h
0Ah 10 Seconds Seconds Seconds 00-59 00h
0Bh
10 Minutes Minutes Minutes 00 - 59 00h
0Ch
12/24
10 Hour
AM/PM
10 Hours Hour Hours 1-12 + AM/PM
00-23
00h
0Dh ALM0POL ALM0C2 ALM0C1 ALM0C0 ALM0IF Day Day 1-7 01h
0Eh
10 Date Date Date 01-31 01h
0Fh
10 Month Month Month 01-12 01h
10h Reserved – Do not use Reserved 01h
11h 10 Seconds Seconds Seconds 00-59 00h
12h
10 Minutes Minutes Minutes 00-59 00h
13h
12/24
10 Hour
AM/PM
10 Hours Hour Hours 1-12 + AM/PM
00-23
00h
14h ALM1POL ALM1C2 ALM1C1 ALM1C0 ALM1IF Day Day 1-7 01h
15h
10 Date Date Date 01-31 01h
16h
10 Month Month Month 01-12 01h
17h-1Fh Reserved – Do not use Reserved 00h