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參數(shù)資料
| 型號： | ISL12022MIBZR5421 |
| 廠商： | INTERSIL CORP |
| 元件分類： | 時鐘/數(shù)據(jù)恢復及定時提取 |
| 英文描述： | REAL TIME CLOCK, PDSO20 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MS-013AC, SOIC-20 |
| 文件頁數(shù)： | 15/29頁 |
| 文件大?。?/td> | 395K |
| 代理商： | ISL12022MIBZR5421 |
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ISL12022MR5421
22
FN7576.1
June 4, 2010
DST Control Registers (DSTCR)
8 bytes of control registers have been assigned for the
Daylight Savings Time (DST) functions. DST beginning
(set Forward) time is controlled by the registers
DstMoFd, DstDwFd, DstDtFd, and DstHrFd. DST ending
time (set Backward or Reverse) is controlled by DstMoRv,
DstDwRv, DstDtRv and DstHrRv.
the DSTCR.
DST FORWARD REGISTERS (20H TO 23H)
DST forward is controlled by the following DST Registers:
DST Enable
DSTE is the DST Enabling Bit located in Bit 7 of register
20h (DstMoFdxx). Set DSTE = 1 will enable the DSTE
function. Upon powering up for the first time (including
battery), the DSTE bit defaults to “0”. When DSTE is set
to “1” the RTC time must be at least one hour before the
scheduled DST time change for the correction to take
place. When DSTE is set to “0”, the DSTADJ bit in the
Status Register automatically resets to “0”.
DST Month Forward
DstMoFd sets the Month that DST starts. The format is
the same as for the RTC register month, from 1 to 12.
The default value for the DST begin month is 00h.
DST Day/Week Forward
DstDwFd contains both the Day of the Week and the
Week of the Month data for DST Forward control. DST
can be controlled either by actual date or by setting both
the Week of the month and the Day of the Week.
DstDwFdE sets the priority of the Day/Week over the
Date. For DstDwFdE = 1, Day/Week is the priority. You
must have the correct Day of Week entered in the RTC
registers for the Day/Week correction to work properly.
Bits 0, 1, 2 contain the Day of the week information
which sets the Day of the Week that DST starts. Note
that Day of the week counts from 0 to 6, like the RTC
registers. The default for the DST Forward Day of the
Week is 00h (normally Sunday).
Bits 3, 4, 5 contain the Week of the Month information
that sets the week that DST starts. The range is from
1 to 5, and Week 7 is used to indicate the last week of
the month. The default for the DST Forward Week of
the Month is 00h.
DST Date Forward
DstDtfd controls which Date DST begins. The format for
the Date is the same as for the RTC register, from 1 to
31. The default value for DST forward date is 00h.
DstDtFd is only effective if DstDwFdE = 0.
DST Hour Forward
DstHrFd controls the hour that DST begins. The RTC hour
and DstHrFd registers have the same formats except
there is no Military bit for DST hour. The user sets the
DST hour with the same format as used for the RTC hour
(AM/PM or MIL) but without the MIL bit, and the DST will
still advance as if the MIL bit were there. The default
value for DST hour Forward is 00h.
DST REVERSE REGISTERS (24H TO 27H)
DST end (reverse) is controlled by the following DST
Registers:
DST Month Reverse
DstMoRv sets the Month that DST ends. The format is
the same as for the RTC register month, from 1 to 12.
The default value for the DST end month is October
(10h).
DST Day/Week Reverse
DstDwRv contains both the Day of the Week and the
TABLE 20. DST FORWARD REGISTERS
ADDRESS
FUNCTION
7
6
54321
0
20h
Month
Forward
DSTE
0
MoFd20
MoFd13
MoFd12
MoFd11
MoFd10
21h
Day Forward
0
DwFdE
WkFd12
WkFd11
WkFd10
DwFd12
DwFd11
DwFd10
22h
Date
Forward
0
DtFd21
DtFd20
DtFd13
DtFd12
DtFd11
DtFd10
23h
Hour
Forward
0
HrFd21
HrFd20
HrFd13
HrFd12
HrFd11
HrFd10
TABLE 21. DST REVERSE REGISTERS
ADDRESS
NAME
7
654
321
0
24h
Month
Reverse
0
MoRv20
MoRv13
MoRv12
MoRv11
MoRv10
25h
Day Reverse
0
DwRvE
WkRv12
WkRv11
WkRv10
DwRv12
DwRv11
DwRv10
26h
Date Reverse
0
DtRv21
DtRv20
DtRv13
DtRv12
DtRv11
DtRv10
27h
Hour Reverse
0
HrRv21
HrRv20
HrRv13
HrRv12
HrRv11
HrRv10
ISL12022MR5421
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL12022MIBZ-T | 功能描述:實時時鐘 REAL TIME CLK & TEMP COMPENSATED CRYSTAL RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| ISL12022MIBZ-T7A | 功能描述:IC RTC/CALENDAR TEMP SNSR 20SOIC RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 實時時鐘 系列:- 產(chǎn)品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:時鐘/日歷 特點:警報器，閏年，SRAM 存儲容量:- 時間格式:HH:MM:SS（12/24 小時） 數(shù)據(jù)格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源，電池:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤 供應商設備封裝:8-TDFN EP 包裝:管件 |
| ISL12022MIBZ-TR5421 | 功能描述:實時時鐘 REAL TIME CLK W/MFK IMPROVED ESD AIR RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| ISL12022MR5421 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Low Power RTC with Battery Backed SRAM, Integrated 5ppm |
| ISL12022M-R5421 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:High-Accuracy RTC Modules, Feature-Rich RTCs |
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