参数资料
| 型号： | DS3231S# |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | IC RTC W/TCXO 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 45 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年，方波输出，TCXO/晶体 |
| 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： | 2.3 V ~ 5.5 V |
| 电压 - 电源，电池： | 2.3 V ~ 5.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 管件 |
| 产品目录页面： | 1434 (CN2011-ZH PDF) |
Extremely Accurate I2C-Integrated
RTC/TCXO/Crystal
Maxim Integrated
11
DS3231
Figure 1. Timekeeping Registers
Note: Unless otherwise specified, the registers’ state is not defined when power is first applied.
ADDRESS
BIT 7
MSB
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
LSB
FUNCTION
RANGE
00h
0
10 Seconds
Seconds
00–59
01h
0
10 Minutes
Minutes
00–59
AM/PM
02h
0
12/
24
20 Hour
10 Hour
Hour
Hours
1–12 +
AM/PM
00–23
03h
0
Day
1–7
04h
0
10 Date
Date
01–31
05h
Century
0
10 Month
Month
Month/
Century
01–12 +
Century
06h
10 Year
Year
00–99
07h
A1M1
10 Seconds
Seconds
Alarm 1 Seconds
00–59
08h
A1M2
10 Minutes
Minutes
Alarm 1 Minutes
00–59
AM/PM
09h
A1M3
12/
24
20 Hour
10 Hour
Hour
Alarm 1 Hours
1–12 +
AM/PM
00–23
Day
Alarm 1 Day
1–7
0Ah
A1M4
DY/
DT
10 Date
Date
Alarm 1 Date
1–31
0Bh
A2M2
10 Minutes
Minutes
Alarm 2 Minutes
00–59
AM/PM
0Ch
A2M3
12/
24
20 Hour
10 Hour
Hour
Alarm 2 Hours
1–12 +
AM/PM
00–23
Day
Alarm 2 Day
1–7
0Dh
A2M4
DY/
DT
10 Date
Date
Alarm 2 Date
1–31
0Eh
EOSC
BBSQW
CONV
RS2
RS1
INTCN
A2IE
A1IE
Control
—
0Fh
OSF
0
EN32kHz
BSY
A2F
A1F
Control/Status
—
10h
SIGN
DATA
Aging Offset
—
11h
SIGN
DATA
MSB of Temp
—
12h
DATA
0
LSB of Temp
—
Address Map
Figure 1 shows the address map for the DS3231 time-
keeping registers. During a multibyte access, when the
address pointer reaches the end of the register space
(12h), it wraps around to location 00h. On an I2C
START or address pointer incrementing to location 00h,
the current time is transferred to a second set of regis-
ters. The time information is read from these secondary
registers, while the clock may continue to run. This
eliminates the need to reread the registers in case the
main registers update during a read.
I2C Interface
The I2C interface is accessible whenever either VCC or
VBAT is at a valid level. If a microcontroller connected
to the DS3231 resets because of a loss of VCC or other
event, it is possible that the microcontroller and
DS3231 I2C communications could become unsyn-
chronized, e.g., the microcontroller resets while read-
ing data from the DS3231. When the microcontroller
resets, the DS3231 I2C interface may be placed into a
known state by toggling SCL until SDA is observed to
be at a high level. At that point the microcontroller
should pull SDA low while SCL is high, generating a
START condition.
Clock and Calendar
The time and calendar information is obtained by read-
ing the appropriate register bytes. Figure 1 illustrates
the RTC registers. The time and calendar data are set
or initialized by writing the appropriate register bytes.
The contents of the time and calendar registers are in
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相关代理商/技术参数 |
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| DS3231S# | 功能描述:实时时钟 Integrated RTC/TCXO/Crystal 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 |
| DS3231S#T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 16SOIC W - Tape and Reel 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 16SOIC W - Cut TR (SOS) 制造商:Maxim Integrated Products 功能描述:IC RTC W/TCXO 16-SOIC 制造商:Maxim Integrated Products 功能描述:Real Time Clock Integrated RTC/TCXO/Crystal |
| DS3231S#T&R | 功能描述:实时时钟 Integrated RTC/TCXO/Crystal 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 |
| DS3231S#-W | 功能描述:实时时钟 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 |
| DS3231S/T&R | 制造商:Maxim Integrated Products 功能描述:I2C-INTEGRATED RTC/TCXO/CRYSTAL SOIC16 - Tape and Reel 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:IC RTC W/TCXO 16SOIC 制造商:Maxim Integrated Products 功能描述:Real Time Clock Integrated RTC/TCXO/Crystal |
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