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參數(shù)資料
| 型號(hào)： | DS1347T+T&R |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 1/17頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC RTC/CALENDAR SPI 8TDFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | 時(shí)鐘/日歷 |
| 特點(diǎn)： | 警報(bào)器，閏年，SRAM |
| 時(shí)間格式： | HH:MM:SS（12/24 小時(shí)） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | SPI |
| 電源電壓： | 2 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-WDFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 8-TDFN EP |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | DS1347T+T&RDKR |
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DS1347
Low-Current, SPI-Compatible
Real-Time Clock
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.
19-6007; Rev 4; 11/13
General Description
The DS1347 SPI-compatible real-time clock (RTC) con-
tains a real-time clock/calendar and 31 x 8 bits of static
random-access memory (SRAM). The real-time
clock/calendar provides seconds, minutes, hours, day,
date, month, year, and century information. A time/date
programmable polled ALARM is included in the device.
The end-of-the-month date is automatically adjusted for
months with fewer than 31 days, including corrections
for leap year. The clock operates in either the 24hr or
12hr format with an AM/PM indicator. The device oper-
ates with a supply voltage of +2V to +5.5V, are avail-
able in the ultra-small 8-pin TDFN package, and work
over the -40°C to +85°C industrial temperature range.
Applications
Point-of-Sale Equipment
Intelligent Instruments
Fax Machines
Battery-Powered Products
Portable Instruments
Features
o RTC Counts Seconds, Minutes, Hours, Day of Week,
Date of Month, Month, Year, and Century
o Leap-Year Compensation
o +2V to +5.5V Wide Operating Voltage Range
o SPI (Mode 1 or 3) Interface: 4MHz at 5V, 1MHz at 2V
o 31 x 8-Bit SRAM for Scratchpad Data Storage
o Uses Standard 32.768kHz Watch Crystal
o Low Timekeeping Current (400nA at 2V)
o Single-Byte or Multiple-Byte (Burst Mode) Data
Transfer for Read or Write of Clock Registers or
SRAM
o Ultra-Small, 3mm x 3mm x 0.8mm, 8-Pin TDFN
Package
o Programmable Time/Date Polled ALARM Function
o No External Crystal Bias Resistors or Capacitors
Required
Ordering Information
Typical Operating Circuit
PART
TEMP RANGE
OSC CL
(pF)
PIN-PACKAGE
DS1347T+
-40
°C to +85°C
12.5
8 TDFN-EP*
DS1347
+3.3V
GND
VCC
0.1
F
c
1
X1
X2
5
2
3
SCLK
32.768kHz
CRYSTAL
CS
DOUT
DIN
4
8
7
6
+
Denotes a lead(Pb)-free/RoHS-compliant package.
*
EP = Exposed pad.
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