參數(shù)資料
型號： DS3232SN
廠商： Maxim Integrated Products, Inc.
英文描述： Extremely Accurate I2C RTC with Integrated Crystal and SRAM
中文描述： 非常精確的I2C實時時鐘集成晶體和SRAM
文件頁數(shù)： 1/18頁
文件大?。?/td> 287K
代理商： DS3232SN
General Description
The DS3232 is a low-cost temperature-compensated
crystal oscillator (TCXO) with a very accurate, tempera-
ture-compensated, integrated real-time clock (RTC) and
236 bytes of battery-backed SRAM. Additionally, the
DS3232 incorporates a battery input and maintains accu-
rate timekeeping when main power to the device is inter-
rupted. The integration of the crystal resonator enhances
the long-term accuracy of the device as well as reduces
the piece-part count in a manufacturing line. The DS3232
is available in commercial and industrial temperature
ranges, and is offered in an industry-standard 20-pin,
300-mil SO package.
The RTC maintains seconds, minutes, hours, day, date,
month, and year information. The date at the end of the
month is automatically adjusted for months with fewer
than 31 days, including corrections for leap year. The
clock operates in either the 24-hour or 12-hour format
with an
AM
/PM indicator. Two programmable time-of-
day alarms and a programmable square-wave output
are provided. Address and data are transferred serially
through an I
2
C* bidirectional bus.
A precision temperature-compensated voltage refer-
ence and comparator circuit monitors the status of V
CC
to detect power failures, to provide a reset output, and
to automatically switch to the backup supply when nec-
essary. Additionally, the
RST
pin is monitored as a
pushbutton input for generating a reset externally.
Applications
Utility Power Meters
GPS
Servers
Telematics
Features
Accuracy ±2ppm from 0°C to +40°C
Accuracy ±3.5ppm from -40°C to +85°C
Battery Backup Input for Continuous
Timekeeping
Operating Temperature Ranges
Commercial: 0°C to +70°C
Industrial: -40°C to +85°C
236 Bytes of Battery-Backed SRAM
Low-Power Consumption
Real-Time Clock Counts Seconds, Minutes,
Hours, Day, Date, Month, and Year with Leap Year
Compensation Valid Up to 2099
Two Time-of-Day Alarms
Programmable Square-Wave Output
Fast (400kHz) I
2
C Interface
3.3V Operation
Digital Temp Sensor Output: ±3°C Accuracy
Register for Aging Trim
RST
Input/Output
300-Mil, 20-Pin SO Package
Underwriters Laboratory (UL) Recognized
Ordering Information
D
Extremely Accurate I
2
C RTC with
Integrated Crystal and SRAM
______________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
Rev 2; 3/06
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
DS3232S#
DS3232SN#
#
Denotes a RoHS-compliant device that may include lead that
is exempt under the RoHS requirements. Lead finish is JESD97
Category e3, and is compatible with both lead-based and
lead-free soldering processes. A "#" anywhere on the top mark
denotes a RoHS-compliant device.
Pin Configuration
0°C to +70°C
-40°C to +85°C
20 SO
20 SO
DS3232
DS3232N
*
Purchase of I
2
C components from Maxim Integrated Products, Inc., or one of its sublicensed Associated Companies, conveys a
license under the Philips I
2
C Patent Rights to use these components in an I
2
C system, provided that the system conforms to the I
2
C
Standard Specification as defined by Philips.
DS3232
V
CC
SCL
SDA
RST
N.C.
N.C.
N.C.
R
PU
R
PU
= t
R
/ C
B
R
PU
INT/SQW
32kHz
V
BAT
PUSH-
BUTTON
RESET
N.C.
N.C.
N.C.
V
CC
V
CC
GND
V
CC
CPU
N.C.
N.C.
N.C.
N.C.
N.C.
Typical Operating Circuit
TOP VIEW
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
SCL
N.C.
SCL
SDA
V
CC
32kHz
N.C.
N.C.
V
BAT
GND
N.C.
N.C.
N.C.
N.C.
RST
INT/SQW
12
11
9
10
N.C.
N.C.
N.C.
N.C.
SO
DS3232
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS3232SN- 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Extremely Accurate I2C RTC with Integrated Crystal and SRAM
DS3232SN# 功能描述:實時時鐘 Integrated RTC/TCXO/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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
DS3232SN#T&R 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:EXTREMELY ACCURATE I2C RTC 20SOIC W - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC W/TCXO 20-SOIC
DS3232SN#T&R 功能描述:實時時鐘 Integrated RTC/TCXO/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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
DS3232SN#-W 功能描述:實時時鐘 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
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