參數(shù)資料
型號(hào)： ISL12022MIBZR5421
廠(chǎng)商： INTERSIL CORP
元件分類(lèi)： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： REAL TIME CLOCK, PDSO20
封裝： ROHS COMPLIANT, PLASTIC, MS-013AC, SOIC-20
文件頁(yè)數(shù)： 6/29頁(yè)
文件大?。?/td> 395K
代理商： ISL12022MIBZR5421
ISL12022MR5421
14
FN7576.1
June 4, 2010
Real Time Clock Registers
Addresses [00h to 06h]
RTC REGISTERS (SC, MN, HR, DT, MO, YR, DW)
These registers depict BCD representations of the time.
As such, SC (Seconds) and MN (Minutes) range from 0 to
59, HR (Hour) can either be a 12-hour or 24-hour mode,
DT (Date) is 1 to 31, MO (Month) is 1 to 12, YR (Year) is
0 to 99, and DW (Day of the Week) is 0 to 6.
The DW register provides a Day of the Week status and
uses three bits (DW2 to DW0) to represent the seven
days of the week. The counter advances in the cycle
0-1-2-3-4-5-6-0-1-2-… The assignment of a numerical
value to a specific day of the week is arbitrary and may
be decided by the system software designer. The default
value is defined as “0”.
24-HOUR TIME
If the MIL bit of the HR register is “1”, the RTC uses a
24-hour format. If the MIL bit is “0”, the RTC uses a
12-hour format and HR21 bit functions as an AM/PM
indicator with a “1” representing PM. The clock defaults
to 12-hour format time with HR21 = “0”.
LEAP YEARS
Leap years add the day February 29 and are defined as
those years that are divisible by 4. Years divisible by 100
are not leap years, unless they are also divisible by 400.
This means that the year 2000 is a leap year and the
year 2100 is not. The ISL12022MR5421 does not correct
for the leap year in the year 2100.
16h
TSV2B
VSC
0
VSC22
VSC21
VSC20
VSC13
VSC12
VSC11
VSC10
0 to 59
00h
17h
VMN
0
VMN22
VMN21
VMN20
VMN13
VMN12
VMN11
VMN10
0 to 59
00h
18h
VHR
VMIL
0
VHR21
VHR20
VHR13
VHR12
VHR11
VHR10
0 to 23
00h
19h
VDT
0
VDT21
VDT20
VDT13
VDT12
VDT11
VDT10
1 to 31
00h
1Ah
VMO
0
VMO20
VMO13
VMO12
VMO11
VMO10
1 to 12
00h
1Bh
TSB2V
BSC
0
BSC22
BSC21
BSC20
BSC13
BSC12
BSC11
BSC10
0 to 59
00h
1Ch
BMN
0
BMN22
BMN21
BMN20
BMN13
BMN12
BMN11
BMN10
0 to 59
00h
1Dh
BHR
BMIL
0
BHR21
BHR20
BHR13
BHR12
BHR11
BHR10
0 to 23
00h
1Eh
BDT
0
BDT21
BDT20
BDT13
BDT12
BDT11
BDT10
1 to 31
00h
1Fh
BMO
0
BMO20
BMO13
BMO12
BMO11
BMO10
1 to 12
00h
20h
DSTCR
DstMoFd
DSTE
D
DstMoFd20 DstMoFd13 DstMoFd12 DstMoFd11 DstMoFd10
1 to 12
00h
21h
DstDwFd
D
DstDwFdE DstWkFd12 DstWkFd11 DstWkFd10 DstDwFd12 DstDwFd11 DstDwFd10
0 to 6
00h
22h
DstDtFd
D
DstDtFd21
DstDtFd20
DstDtFd13
DstDtFd12
DstDtFd11
DstDtFd10
1 to 31
00h
23h
DstHrFd
D
DstHrFd21 DstHrFd20 DstHrFd13 DstHrFd12
DstHrFd11
DstHrFd10
0 to 23
00h
24h
DstMoRv
D
DstMoRv20 DstMoRv13 DstMoR12v DstMoRv11 DstMoRv10
01 to 12
00h
25h
DstDwRv
D
DstDwRvE DstWkrv12 DstWkRv11 DstWkRv10 DstDwRv12 DstDwRv11 DstDwRv10
0 to 6
00h
26h
DstDtRv
D
DstDtRv21 DstDtRv20 DstDtRv13 DstDtRv12
DstDtRv11
DstDtRv10
01 to 31
00h
27h
DstHrRv
D
DstHrRv21 DstHrRv20 DstHrRv13 DstHrRv12 DstHrRv11 DstHrRv10
0 to 23
00h
28h
TEMP
TK0L
TK07
TK06
TK05
TK04
TK03
TK02
TK01
TK00
00 to FF
00h
29h
TK0M
0000
00
TK09
TK08
00 to 03
00h
2Ah
NPPM
NPPML
NPPM7
NPPM6
NPPM5
NPPM4
NPPM3
NPPM2
NPPM1
NPPM0
00 to FF
00h
2Bh
NPPMH
0000
0
NPPM10
NPPM9
NPPM8
00 to 07
00h
2Ch
XT0
D
XT4
XT3
XT2
XT1
XT0
00 to FF
XXh
2Dh
ALPHAH
D
ALP_H6
ALP_H5
ALP_H4
ALP_H3
ALP_H2
ALP_H1
ALP_H0
00 to 7F
XXh
2Eh
GPM
GPM1
GPM17
GPM16
GPM15
GPM14
GPM13
GPM12
GPM11
GPM10
00 to FF
00h
2Fh
GPM2
GPM27
GPM26
GPM25
GPM24
GPM23
GPM22
GPM21
GPM20
00 to FF
00h
TABLE 1. REGISTER MEMORY MAP (YELLOW SHADING INDICATES READ-ONLY BITS) (Continued)
ADDR.
SECTIO
N
REG
NAME
BIT
RANGE DEFAULT
7
654
3210
ISL12022MR5421
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