参数资料
| 型号： | ISL12022MIBZ-T7A |
| 厂商： | Intersil |
| 文件页数： | 6/31页 |
| 文件大小： | 0K |
| 描述： | IC RTC/CALENDAR TEMP SNSR 20SOIC |
| 应用说明： | Addressing Power Issues in Real Time Clock Appls |
| 产品培训模块： | Solutions for Industrial Control Applications |
| 标准包装： | 250 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，夏令时，闰年，SRAM |
| 存储容量： | 128B |
| 时间格式： | HH:MM:SS（12/24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | I²C，2 线串口 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 电压 - 电源，电池： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 20-SOIC |
| 包装： | 带卷 (TR) |
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ISL12022M
14
FN6668.9
June 20, 2012
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 ISL12022M does not
correct for the leap year in the year 2100.
Control and Status Registers
(CSR)
Addresses [07h to 0Fh]
The Control and Status Registers consist of the Status Register,
Interrupt and Alarm Register, Analog Trimming and Digital
Trimming Registers.
STATUS REGISTER (SR)
The Status Register is located in the memory map at address
07h. This is a volatile register that provides either control or
status of RTC failure (RTCF), Battery Level Monitor (LBAT85,
LBAT75), alarm trigger, Daylight Saving Time, crystal oscillator
enable and temperature conversion in progress bit.
BUSY BIT (BUSY)
Busy Bit indicates temperature sensing is in progress. In this
mode, Alpha, Beta and ITRO registers are disabled and cannot be
accessed.
OSCILLATOR FAIL BIT (OSCF)
Oscillator Fail Bit indicates that the oscillator has failed. The
oscillator frequency is either zero or very far from the desired
32.768kHz due to failure, PC board contamination or mechanical
issues.
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
0
TK09
TK08
00 to 03
00h
2Ah
NPPM
NPPML
NPPM7
NPPM6
NPPM5
NPPM4
NPPM3
NPPM2
NPPM1
NPPM0
00 to FF
00h
2Bh
NPPMH
0
NPPM10
NPPM9
NPPM8
00 to 07
00h
2Ch
XT0
D
XT4
XT3
XT2
XT1
XT0
00 to FF
XXh
2Dh
ALPHAH 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. SECTION
REG
NAME
BIT
RANGE DEFAULT
7
6
543
2
1
0
TABLE 2. STATUS REGISTER (SR)
ADDR
7
6
5
4
3
2
1
0
07h
BUSY OSCF DSTDJ ALM LVDD LBAT85 LBAT75 RTCF
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| ISL12022MIBZ-TR5421 | 功能描述:实时时钟 REAL TIME CLK W/MFK IMPROVED ESD AIR RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
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