參數(shù)資料
型號： DS1340U-18
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： XO, clock
英文描述： I2C RTC with Trickle Charger
中文描述： REAL TIME CLOCK, PDSO8
封裝： MICRO, SOP-8
文件頁數(shù)： 1/13頁
文件大小： 1434K
代理商： DS1340U-18
General Description
The DS1340 is a real-time clock (RTC)/calendar that is
pin compatible and functionally equivalent to the ST
M41T00, including the software clock calibration. The
device additionally provides trickle-charge capability
on the V
BACKUP
pin, a lower timekeeping voltage, and
an oscillator STOP flag. Block access of the register
map is identical to the ST device. Two additional regis-
ters, which are accessed individually, are required for
the trickle charger and flag. The clock/calendar pro-
vides seconds, minutes, hours, day, date, month, and
year information. A built-in power-sense circuit detects
power failures and automatically switches to the back-
up supply. The device is programmed serially through
an I
2
C
TM
bidirectional bus.
Applications
Portable Instruments
Point-of-Sale Equipment
Medical Equipment
Telecommunications
Features
Enhanced Second Source for the ST M41T00
Available in a Surface-Mount Package with an
Integrated Crystal (DS1340C)
Fast (400kHz) I
2
C Interface
Software Clock Calibration
RTC Counts Seconds, Minutes, Hours, Day, Date,
Month, and Year
Automatic Power-Fail Detect and Switch Circuitry
Trickle-Charge Capability
Low Timekeeping Voltage Down to 1.3V
Three Operating Voltage Ranges (1.8V, 3V, and 3.3V)
Oscillator Stop Flag
Available in 8-Pin μSOP or SO Packages
Underwriters Laboratory (UL) Recognized
Ordering Information
D
I
2
C RTC with Trickle Charger
______________________________________________
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
4
CPU
V
CC
V
CC
V
CC
FT/OUT
5
6
8
1
2
SDA
SCL
GND
X2
X1
V
CC
RPU
RPU
CRYSTAL
V
BACKUP
3
7
RPU = t
R
/ C
B
DS1340
Typical Operating Circuit
Rev 2; 12/04
PART
TEMP RANGE
PIN-PACKAGE
TOP
MARK
D1340-18
DS1340-3
D1340-33
1340
A1-18
1340
A1-3
1340
A1-33
1340C-18
1340C-3
1340C-33
D1340-18
DS1340-3
D1340-33
1340
A1-18
1340
A1-3
1340
A1-33
1340C-18
1340C-3
1340C-33
DS1340Z-18
DS1340Z-3
DS1340Z-33
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
8 SO (0.150in)
8 SO (0.150in)
8 SO (0.150in)
DS1340U-18
-40°C to +85°C
8 μSOP
DS1340U-3
-40°C to +85°C
8 μSOP
DS1340U-33
-40°C to +85°C
8 μSOP
DS1340C-18
DS1340C-3
DS1340C-33
DS1340Z-18+
DS1340Z-3+
DS1340Z-33+
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
16 SO
16 SO
16 SO
8 SO (0.150in)
8 SO (0.150in)
8 SO (0.150in)
DS1340U-18+
-40°C to +85°C
8 μSOP
DS1340U-3+
-40°C to +85°C
8 μSOP
DS1340U-33+
-40°C to +85°C
8 μSOP
DS1340C-18+
DS1340C-3+
DS1340C-33+
Note: A "+" in the part number and a "+" anywhere on the top
mark indicates a lead-free device.
Pin Configurations appear at end of data sheet.
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
16 SO
16 SO
16 SO
I
2
C is a trademark of Philips Corp. Purchase of I
2
C compo-
nents from Maxim Integrated Products, Inc., or one of its subli-
censed 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.
相關(guān)PDF資料
PDF描述
DS1340U-3 I2C RTC with Trickle Charger
DS1340U-33 I2C RTC with Trickle Charger
DS1340Z-18 I2C RTC with Trickle Charger
DS1340Z-3 I2C RTC with Trickle Charger
DS1340Z-33 I2C RTC with Trickle Charger
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1340U-18+ 功能描述:實時時鐘 I2C RTC w/Trickle Charger 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
DS1340U-3 功能描述:實時時鐘 I2C RTC w/Trickle Charger 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
DS1340U-3/T&R 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 8USOP - Tape and Reel
DS1340U-3+ 功能描述:實時時鐘 I2C RTC w/Trickle Charger 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
DS1340U-3+T&R 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 8USOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC I2C W/CHARGER 3V 8-USOP 制造商:Maxim Integrated Products 功能描述:Real Time Clock I2C RTC w/Trickle Charger
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