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DS1342T+T&R PDF预览

DS1342T+T&R

更新时间： 2024-10-01 20:58:23
品牌 Logo 应用领域
美信 - MAXIM 时钟光电二极管外围集成电路
页数 文件大小 规格书
16页 552K
描述
Real Time Clock, Volatile, 1 Timer(s), CMOS, PDSO8, ROHS COMPLIANT, TDFN-8

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中文翻译

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DS1342T+T&R 技术参数

是否Rohs认证： 符合生命周期：Active
零件包装代码：DFN包装说明：HVSON, SOLCC8,.12,25
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
Factory Lead Time：6 weeks风险等级：0.75
最大时钟频率：0.032 MHz外部数据总线宽度：
信息访问方法：I2C中断能力：Y
JESD-30 代码：S-PDSO-N8长度：3 mm
湿度敏感等级：1端子数量：8
计时器数量：1最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：HVSON封装等效代码：SOLCC8,.12,25
封装形状：SQUARE封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：NOT SPECIFIED电源：2/5 V
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Timer or RTC最大供电电压：5.5 V
最小供电电压：1.8 V标称供电电压：3 V
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL端子形式：NO LEAD
端子节距：0.65 mm端子位置：DUAL
最短时间：SECONDS处于峰值回流温度下的最长时间：NOT SPECIFIED
易失性：YES宽度：3 mm
uPs/uCs/外围集成电路类型：TIMER, REAL TIME CLOCKBase Number Matches：1

DS1342T+T&R 数据手册

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2
DS1341/DS1342  
Low-Current I C RTCs for High-ESR Crystals  
General Description  
Features  
● Low Timekeeping Current of 250nA (typ)  
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  
● Compatible with Crystal ESR Up to 100kΩ  
● Use Crystals with C = 6pF (DS1341) or  
L
C = 12.5pF (DS1342)  
L
● +1.8V to +5.5V Operating Voltage Range  
● Maintain Time Down to +1.15V (typ)  
2
an I C serial interface. Other features include two time-  
2
● Fast (400kHz) I C Interface  
of-day alarms, two interrupt outputs, a programmable  
square-wave output, and a serial bus timeout mechanism.  
● Bus Timeout for Lockup-Free Operation  
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.  
● RTC Counts Seconds, Minutes, Hours, Day, Date,  
Month, and Year with Leap Year Compensation Valid  
Through 2099  
● External Clock Source for Synchronization Clock  
Reference (e.g., 32kHz, 50Hz/60Hz Power Line,  
GPS 1PPS)  
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.  
● Two Time-of-Day Alarms with Two Interrupt Outputs  
● Programmable Square-Wave Output  
● Industrial Temperature Range  
● Small 8-Pin μSOP or TDFN Packages  
Applications  
● Medical  
● Point of Sale (POS)  
● Telematics  
● Portable Instruments  
● Portable Audio  
The devices are available in lead(Pb)-free/RoHS-  
compliant, 8-pin µSOP or TDFN packages. The devices  
support a -40°C to +85°C extended temperature range.  
Ordering Information  
Typical Operating Circuit  
PIN-  
PACKAGE  
OSC C  
(pF)  
L
PART  
TEMP RANGE  
V
CC  
V
CC  
DS1341U+  
-40ºC to +85ºC 8 µSOP  
-40ºC to +85ºC 8 µSOP  
-40ºC to +85ºC 8 TDFN-EP*  
-40ºC to +85ºC 8 TDFN-EP*  
-40ºC to +85ºC 8 µSOP  
-40ºC to +85ºC 8 µSOP  
-40ºC to +85ºC 8 TDFN-EP*  
-40ºC to +85ºC 8 TDFN-EP*  
6
6
DS1341U+T&R  
DS1341T+  
R
PU  
R
PU  
R
PU  
6
V
CC  
SCL  
SDA  
X1  
X2  
DS1341T+T&R  
DS1342U+  
6
12.5  
12.5  
12.5  
12.5  
CLKIN/INTA  
SQW/INTB  
DS1342U+T&R  
DS1342T+  
CPU  
DS1341/DS1342  
DS1342T+T&R  
GND  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
T&R = Tape and reel.  
*EP = Exposed pad.  
19-4998; Rev 3; 4/15  
1234567...16

中文翻译

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