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DS1388

更新时间： 2024-11-17 14:57:11
品牌 Logo 应用领域
亚德诺 - ADI 可编程只读存储器电动程控只读存储器电可擦编程只读存储器监控
页数 文件大小 规格书
19页 241K
描述
I2C RTC/监控电路，带有涓流充电器和512字节EEPROM

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中文翻译

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DS1388 数据手册

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DS1388  
2
I C RTC/Supervisor with Trickle Charger  
and 512 Bytes EEPROM  
General Description  
Features  
2
2
The DS1388 I C real-time clock (RTC), supervisor, and  
EEPROM is a multifunction device that provides a  
clock/calendar, programmable watchdog timer, power-  
supply monitor with reset, and 512 bytes of EEPROM.  
The clock provides hundredths of seconds, seconds,  
minutes, and hours, and operates in 24-hour or 12-hour  
format with an AM/PM indicator. The calendar provides  
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. A watchdog timer provides a reset for an unre-  
sponsive microprocessor. It is programmable in 10ms  
intervals from 0.01 to 99.99 seconds. A temperature-  
compensated voltage reference and comparator circuit  
o Fast (400kHz) I C Interface  
o RTC Counts Hundredths of Seconds, Seconds,  
Minutes, Hours, Day, Date, Month, and Year with  
Leap Year Compensation Valid Up to 2100  
o Programmable Watchdog Timer  
o Automatic Power-Fail Detect and Switch Circuitry  
o Reset Output with Pushbutton Reset Input  
Capability  
o 512 x 8 Bits of EEPROM  
o Integrated Trickle-Charge Capability for Backup  
Supply  
o Three Operating Voltages: 5.0V, 3.3V, and 3.0V  
o Low Timekeeping Voltage Down to 1.3V  
o -40°C to +85°C Temperature Range  
o UL Recognized  
monitors the status of V . If a primary power failure is  
CC  
detected, the device automatically switches to the  
backup supply and drives the reset output to the active  
state. The backup supply maintains time and date  
operation in the absence of V . When V  
returns to  
CC  
CC  
nominal levels, the reset is held low for a period to allow  
the power supply and processor to stabilize. The  
device also has a pushbutton reset controller, which  
debounces a reset input signal. The device is  
Ordering Information  
TOP  
MARK  
PART  
TEMP RANGE PIN-PACKAGE  
2
accessed through an I C serial interface.  
DS1388Z-5+  
-40°C to +85°C 8 SO (150 mils) DS1388-5  
Applications  
DS1388Z-33+ -40°C to +85°C 8 SO (150 mils) DS138833  
DS1388Z-3+ -40°C to +85°C 8 SO (150 mils) DS1388-3  
Portable Instruments  
Point-of-Sale Equipment  
Network Interface Cards  
Wireless Equipment  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
Pin Configuration  
Typical Operating Circuit  
CRYSTAL  
V
CC  
V
CC  
V
CC  
TOP VIEW  
+
V
X1  
X2  
1
2
3
4
8
7
6
5
CC  
X2  
X1  
V
CC  
RPU  
RPU  
RST  
SCL  
SDA  
DS1388  
SCL  
SDA  
V
BACKUP  
GND  
DS1388  
CPU  
RST  
V
BACKUP  
SO  
GND  
RPU = t /C  
R
B
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.  
19-4984; Rev 4 4/13  
1234567...19

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DS1388Z-3 ROCHESTER

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DS1388Z-33 ROCHESTER

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DS1388Z-33+ MAXIM

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DS1388Z-33+T&R MAXIM

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 		I2C RTC/Supervisor with Trickle Charger and 512 Bytes EEPROM

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