参数资料
| 型号： | DS1342T+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC RTC I2C W/ALARM 6TDFN |
| 标准包装： | 3,000 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年，方波输出 |
| 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 ~ 5.5 V |
| 电压 - 电源，电池： | 1.3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WDFN 裸露焊盘 |
| 供应商设备封装： | 8-TDFN-EP（3x3） |
| 包装： | 带卷 (TR) |
Low-Current I2C RTCs for High-ESR Crystals
DS1341/DS1342
General Description
The DS1341/DS1342 low-current real-time clocks (RTCs)
are timekeeping devices that provide an extremely low
standby current, which permits longer life from a power
supply. The DS1341/DS1342 support high-ESR crystals,
which broaden the pool of usable crystals for the devices.
The DS1341 uses a 6pF crystal, while the DS1342 uses a
12.5pF crystal. These devices are accessed through an
I2C serial interface. Other features include two time-of-day
alarms, two interrupt outputs, a programmable square-
wave output, and a serial bus timeout mechanism.
The clock/calendar provides 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 24hr or 12hr format
with an AM/PM indicator.
The DS1341/DS1342 also include an input for synchroni-
zation. When a reference clock (e.g., 60Hz power line or
GPS 1PPS) is present at the CLKIN pin and the enable
external clock input bit (ECLK) is set to 1, the DS1341/
DS1342 RTCs are frequency-locked to the external clock
and the clock accuracy is determined by the external
source. In case of external clock failure, the clock is
switched to the crystal oscillator.
The devices are available in lead(Pb)-free/RoHS-
compliant, 8-pin FSOP or TDFN packages. The devices
support a -40NC to +85NC extended temperature range.
Features
S
Low Timekeeping Current of 250nA (typ)
S
Compatible with Crystal ESR Up to 100kI
S
Use Crystals with CL = 6pF (DS1341) or
CL = 12.5pF (DS1342)
S
+1.8V to +5.5V Operating Voltage Range
S
Maintain Time Down to +1.15V (typ)
S
Fast (400kHz) I2C Interface
S
Bus Timeout for Lockup-Free Operation
S
RTC Counts Seconds, Minutes, Hours, Day, Date,
Month, and Year with Leap Year Compensation
Valid Through 2099
S
External Clock Source for Synchronization Clock
Reference (e.g., 32kHz, 50Hz/60Hz Power Line,
GPS 1PPS)
S
Two Time-of-Day Alarms with Two Interrupt
Outputs
S
Programmable Square-Wave Output
S
Industrial Temperature Range
S
Small, 8-Pin SOP or TDFN Packages
Applications
19-4998; Rev 2; 1/12
Typical Operating Circuit
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
*EP = Exposed pad.
Medical
Point of Sale (POS)
Telematics
Portable Instruments
Portable Audio
Automotive
DS1341/DS1342
SCL
SDA
CLKIN/INTA
SQW/INTB
X1
X2
GND
VCC
RPU
CPU
VCC
PART
TEMP RANGE
PIN-
PACKAGE
OSC
CL (pF)
DS1341U+
-40NC to +85NC
8 FSOP
6
DS1341U+T&R
-40NC to +85NC
8 FSOP
6
DS1341T+
-40NC to +85NC
8 TDFN-EP*
6
DS1341T+T&R
-40NC to +85NC
8 TDFN-EP*
6
DS1342U+
-40NC to +85NC
8 FSOP
12.5
DS1342U+T&R
-40NC to +85NC
8 FSOP
12.5
DS1342T+
-40NC to +85NC
8 TDFN-EP*
12.5
DS1342T+T&R
-40NC to +85NC
8 TDFN-EP*
12.5
For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
相关PDF资料 |
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| DS1337S+T&R | IC RTC SERIAL 2WIRE LP 8-SOIC |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1342U+ | 功能描述:实时时钟 I2C RTC 12pF 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 |
| DS1342U+T&R | 制造商:Maxim Integrated Products 功能描述:I2C RTC 12.5PF UMAX PB FREE T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:MXMDS1342U+T&R LOW-CURRENT IC RTCS FOR H 制造商:Maxim Integrated Products 功能描述:IC RTC I2C W/ALARM 8USOP 制造商:Maxim Integrated Products 功能描述:Real Time Clock I2C RTC 12pF |
| DS1342U+T&R | 功能描述:实时时钟 I2C RTC 12pF 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 |
| DS1342U+TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Current I2C RTCs for High-ESR Crystals |
| DS1343 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Current SPI/3-Wire RTCs |
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