收藏本站
DS1339A
Low-Current, I2C, Serial Real-Time Clock
7
Maxim Integrated
Pin Configuration
Pin Description
PIN
NAME
FUNCTION
1
X1
Connections for Standard 32.768kHz Quartz Crystal. The internal oscillator circuitry is designed for
operation with a crystal having a specified load capacitance (CL) of 6pF.
For more information about crystal selection and crystal layout considerations, see the Applications
Information section and refer to Application Note 58: Crystal Considerations with Dallas Real-Time Clocks.
2
X2
3
VBACKUP
Secondary Power Supply. Supply voltage must be held between 1.3V and 3.7V for proper operation.
This pin can be connected to a primary cell, such as a lithium coin cell. Additionally, this pin can be
connected to a rechargeable cell or a super cap when used in conjunction with the trickle-charge
feature. Diodes should not be placed in series between the backup source and the VBACKUP input,
or improper operation will result. If a backup supply is not required, VBACKUP must be grounded. UL
recognized to ensure against reverse charging current when used with a primary lithium cell. For more
information, visit www.maximintegrated.com/qa/info/ul.
4
GND
Ground
5
SDA
Serial Data Input/Output. SDA is the input/output pin for the I2C serial interface. The SDA pin is an open-
drain output and requires an external pullup resistor. The pull up voltage may be up to 5.5V regardless of
the voltage on VCC.
6
SCL
Serial Clock Input. SCL is used to synchronize data movement on the I2C serial interface. The pull up
voltage may be up to 5.5V regardless of the voltage on VCC.
7
SQW/INT
Square-Wave/Interrupt Output. Programmable square-wave or interrupt output signal. The SQW/INT pin
is an open-drain output and requires an external pullup resistor. The pull up voltage may be up to 5.5V
regardless of the voltage on VCC. If not used, this pin may be left unconnected.
8
VCC
Primary Power Supply. When voltage is applied within normal limits, the device is fully accessible and
data can be written and read. When a backup supply is connected and VCC is below VPF, reads and
writes are inhibited. The timekeeping and alarm functions operate when the device is powered by VCC or
VBACKUP.
SOP
27
SQW/INT
X2
18
VCC
+
X1
SCL
VBACKUP
36
SDA
GND
TOP VIEW
45
DS1339A
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
DS1339C-2# IC RTC I2C W/ALARM 16-SOIC
DS1340Z-33/T&R IC RTC I2C W/CHARGER 3.3V 8-SOIC
DS1340Z-3 IC RTC I2C W/CHARGER 3V 8-SOIC
DS1341T+ IC RTC I2C W/ALARM 6TDFN-EP
DS1344D-33+ IC RTC SPI 3.3V 14TDFN-EP
DS1347T+ IC RTC/CALENDAR SPI 8TDFN
DS1371U+C01 IC BINARY COUNTER 32-BIT 8-USOP
DS1372U+T&R IC BINARY COUNTER 32-BIT 8-USOP
相关代理商/技术参数
DS1339AU+T 功能描述:实时时钟 1.8-3.3V Serial 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
DS1339BU+ 功能描述:实时时钟 SERIAL RTC 1.8-3.3V C 1.8-3.3V HESR USOP 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
DS1339BU+T 制造商:Maxim Integrated Products 功能描述:SERIAL RTC 1.8-3.3V HESR USOP TRL - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC I2C W/ALARM 8UMAX
DS1339C-2 功能描述:实时时钟 I2C Serial 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
DS1339C-2- 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:I2C Serial Real-Time Clock
DS1339C-2# 功能描述:实时时钟 I2C Serial 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
DS1339C-2+ 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 16SOIC W - Bulk
DS1339C-3 功能描述:实时时钟 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