参数资料
| 型号： | ISL12057IBZ |
| 厂商： | Intersil |
| 文件页数： | 17/17页 |
| 文件大小： | 0K |
| 描述： | IC RTC/CALENDAR I2C 8-SOIC |
| 标准包装： | 980 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年 |
| 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： | 1.8 V ~ 3.6 V |
| 电压 - 电源，电池： | 1.4 V ~ 1.8 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
9
FN6755.1
March 3, 2011
Real-Time Clock Registers
Addresses [00h to 06h]
RTC REGISTERS (SC, MN, HR, DW, DT, MO, YR)
These registers depict BCD representations of the time. As
such, SC (Seconds, address 00h) and MN (Minutes,
address 01h) range from 0 to 59, HR (Hour, address 02h)
can either be a 12-hour or 24-hour mode, DW (Day of the
Week, address 03h) is 1 to 7, DT (Date, address 04h) is 1 to
31, MO (Month, address 05h) is 1 to 12, and YR (Year,
address 06h) is 0 to 99.
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,
1-2-3-4-5-6-7-1-2-…
The assignment of a numerical value to a specific day of the
week is arbitrary and may be decided by the system
software designer.
24-HOUR TIME
If the MIL bit of the HR register is “0”, the RTC uses a
24-hour format, and bit 5 of the HR register is the second
10-hour bit (20–23 hours). If the MIL bit is “1”, the RTC uses
a 12-hour format and bit 5 of the HR register is the AM/PM
bit, with logic high being PM. The clock defaults to 24-hour
format time.
CENTURY INDICATOR
The century bit (bit 7 of the MO register) is toggled when the
years register overflows from 99 to 00 to indicate the change
of century.
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
ISL12057 does not correct for the leap year in the year 2100.
Addresses [0Eh to 0Fh]
The Control and Status Registers consist of the Status
Register, Interrupt, and Alarm Register.
TABLE 1. REGISTER MEMORY MAP
ADDR SECTION
REG
NAME
BIT
REG
7
6
5
43210
RANGE
DEFAULT
00H
RTC
SC
0
SC22
SC21
SC20
SC13
SC12
SC11
SC10
0-59
00h
01H
MN
0
MN22
MN21
MN20
MN13
MN12
MN11
MN10
0-59
00h
02H
HR
0
MIL
AM/PM
HR20
HR13
HR12
HR11
HR10
1-12
+AM/PM
00h
HR21
0-23
03H
DW
0
DW12
DW11
DW10
1-7
01h
04H
DT
0
DT21
DT20
DT13
DT12
DT11
DT10
1-31
01h
05H
MO
CENTUR
Y
0
MO20
MO13
MO12
MO11
MO10
0-12
+Century
01h
06h
YR
YR23
YR22
YR21
YR20
YR13
YR12
YR11
YR10
0-99
00h
07h
Alarm1
A1SC
A1M1
A1SC22
A1SC21
A1SC20
A1SC13
A1SC12
A1SC11
A1SC10
0-59
00h
08h
A1MN
A1M2
A1MN22
A1MN21
A1MN20
A1MN13
A1MN12
A1MN11
A1MN10
0-59
00h
09h
A1HR
A1M3
A1MIL
A1AM/PM A1HR20
A1HR13
A1HR12
A1HR11
A1HR10
1-12
+AM/PM
00h
A1HR21
0-23
0Ah
A1DW/
DT
A1M4
A1DW/DT
0
A1DW12
A1DW11
A1DW10
1-7
00h
A1DT21
A1DT20
A1DT13
A1DT12
A1DT11
A1DT10
1-31
00h
0Bh
Alarm2
A2MN
A2M2
A2MN22
A2MN21
A2MN20
A2MN13
A2MN12
A2MN11
A2MN10
0-59
00h
0Ch
A2HR
A2M3
A2MIL
A2AM/PM A2HR20
A2HR13
A2HR12
A2HR11
A2HR10
1-12
+AM/PM
00h
A2HR21
0-23
0Dh
A2DW/
DT
A2M4
A2DW/DT
0
A2DW12
A2DW11
A2DW10
1-7
00h
A2DT21
A2DT20
A2DT13
A2DT12
A2DT11
A2DT10
1-31
00h
0Eh
Control
INT
EOSC
0
RS2
RS1
INTCN
A2IE
A1IE
N/A
18h
0Fh
Status
SR
OSF
0
A2F
A1F
N/A
80h
ISL12057
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL12057IBZ-T | 功能描述:实时时钟 REAL TIME CLK W/ ALARM DS1337 COMP 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 |
| ISL12057IRUZ-T | 功能描述:实时时钟 REAL TIME CLK W/ ALARM DS1337 COMP 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 |
| ISL12057IUZ | 功能描述:实时时钟 REAL TIME CLK W/ ALARM DS1337 COMP 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 |
| ISL12057IUZ-T | 功能描述:实时时钟 REAL TIME CLK W/ ALARM DS1337 COMP 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 |
| ISL12058 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Low Cost and Low Power I2C-Bus? Real Time Clock/Calendar |
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