参数资料
| 型号： | DS1344D-33+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC RTC SPI 3.3V 14TDFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年，NVRAM，方波输出，涓流充电器 |
| 存储容量： | 96B |
| 时间格式： | HH:MM:SS（12/24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | SPI |
| 电源电压： | 3 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： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-TDFN-EP（3x3） |
| 包装： | 管件 |
Low-Current SPI/3-Wire RTCs
DS1343/DS1344
19-5801; Rev 1; 12/11
General Description
The DS1343/DS1344 low-current real-time clocks (RTCs)
are timekeeping devices that provide an extremely low
standby current, permitting longer life from a backup
supply source. The devices also support high-ESR
crystals, broadening the pool of usable crystals for the
devices. 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 24-hour or
12-hour format with an AM/PM indicator.
Address and data are transferred serially through an
SPI or 3-wire interface. Two programmable time-of-day
alarms are provided. Each alarm can generate an inter-
rupt on a combination of seconds, minutes, hours, and
day. Don’t-care states can be inserted into one or more
fields if it is desired for them to be ignored for the alarm
condition. The time-of-day alarms can be programmed
to assert two different interrupt outputs, or they can be
combined to assert one common interrupt output. Both
interrupt outputs operate when the device is powered by
either VCC or VBAT.
The devices are available in a lead-free/RoHS-compliant,
20-pin TSSOP or 14-pin TDFN package, and support a
-40°C to +85°C extended industrial temperature range.
Applications
Medical
Handheld Devices
Telematics
Embedded Timestamping
Features
S
Low Timekeeping Current of 250nA (typ)
S
Compatible with Crystal ESR Up to 100kI
S
Versions Available to Support Either 6pF or
12.5pF Crystals
S
RTC Counts Seconds, Minutes, Hours, Day, Date,
Month, and Year with Leap Year Compensation
Valid Through 2099
S
Power-Fail and Switch Circuitry
S
Three Operating Voltages
1.8V ±5%
3.0V±10%
3.3V ±10%
S
Trickle-Charge Capability
S
Maintain Time Down to 1.15V (typ)
S
Support Motorola SPI Modes 1 and 3, or Standard
3-Wire Interface
S
Burst Mode for Reading/Writing Successive
Addresses in Clock/RAM
S
96-Byte Battery-Backed NV RAM for Data Storage
S
Two Time-of-Day Alarms with Two Interrupt
Outputs
S
Industrial Temperature Range
S
20-Pin TSSOP or 14-Pin TDFN Package
S
Underwriters Laboratories (UL) Recognized
Ordering Information appears at end of data sheet.
Typical Operating Circuit
DS1343
DS1344
INT0
PF
INT1
CE
SCLK
SDI
SDO
X1
X2
VBAT
GND
SERMODE
VCC
INT
RST
3-WIRE
PORT
P
NOTE: SHOWN IN 3-WIRE I/O CONFIGURATION.
RPU
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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1344D-33+ | 功能描述:实时时钟 Low-Current SPI/3-Wire RTC 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 |
| DS1344D-33+T&R | 制造商:Maxim Integrated Products 功能描述:SPI RTC 14P TDFN 3.3V 12.5PF AM T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC SPI 3.3V 14TDFN-EP 制造商:Maxim Integrated Products 功能描述:Real Time Clock Low-Current SPI/3-Wire RTC |
| DS1344D-33+T&R | 功能描述:实时时钟 Low-Current SPI/3-Wire RTC 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 |
| DS1344E-18+ | 功能描述:实时时钟 Low-Current SPI/3-Wire RTC 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 |
| DS1344E-18+T&R | 制造商:Maxim Integrated Products 功能描述:SPI RTC 20P TSSOP 1.8V 12.5PF A T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC SPI 1.8V 20TSSOP 制造商:Maxim Integrated Products 功能描述:Real Time Clock Low-Current SPI/3-Wire RTC |
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