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参数资料
| 型号： | DS1339U-33+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 19/20页 |
| 文件大小： | 0K |
| 描述： | IC RTC I2C W/ALARM 8-USOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 3,000 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年，方波输出，涓流充电器 |
| 时间格式： | HH:MM:SS（12/24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | I²C，2 线串口 |
| 电源电压： | 2.97 V ~ 5.5 V |
| 电压 - 电源，电池： | 1.3 V ~ 3.7 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
DS1339 I
2C Serial Real-Time Clock
8 of 20
PIN DESCRIPTION
PIN
NAME
FUNCTION
SOP
SO
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. An external 32.768kHz oscillator can also drive the
DS1339. In this configuration, the X1 pin is connected to the external oscillator
signal and the X2 pin is left unconnected.
For more information about crystal selection and crystal layout considerations,
refer to Application Note 58: Crystal Considerations with Dallas Real-Time
Clocks.
2
—
X2
3
14
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 button 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 lithium cell. For more information, visit www.maxim-ic.com/qa/info/ul.
4
15
GND
Ground. DC power is provided to the device on these pins.
5
16
SDA
Serial Data Input/Output. SDA is the input/output pin for the I
2C 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
1
SCL
Serial Clock Input. SCL is used to synchronize data movement on the I
2C serial
interface. The pull up voltage may be up to 5.5V regardless of the voltage on
VCC.
7
2
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
3
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.
—
4–13
N.C.
No Connection. These pins are unused and must be connected to ground.
TYPICAL OPERATING CIRCUIT
DS1339
4
CPU
VCC
5
6
8
1
2
SDA
SCL
GND
X2
X1
VCC
RPU
CRYSTAL
SQW/INT
VBACKUP
3
7
i
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1340 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:I2C RTC with Trickle Charger |
| DS1340_06 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:I2C RTC with Trickle Charger |
| DS1340_11 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:I2C RTC with Trickle Charger |
| DS1340-3 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:I2C RTC with Trickle Charger |
| DS1340C-18 | 功能描述:实时时钟 I2C RTC w/Trickle Charger 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 |
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