Datasheet > 微控制器和处理器 > 计时器或实时时钟> DS1307Z/TR

DS1307Z/TR

更新时间： 2024-01-05 13:13:54

品牌	Logo	应用领域
美信 - MAXIM		时钟
页数	文件大小	规格书
15页	669K
描述
64 x 8, Serial, I2C Real-Time Clock

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

DS1307Z/TR 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SOIC
包装说明：	SOP, SOP8,.25	针数：	8
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8473.30.11.80	Factory Lead Time：	6 weeks
风险等级：	0.66	Samacsys Confidence：	3
Samacsys Status：	Released	2D Presentation：	https://componentsearchengine.com/2D/0T/232132.1.2.png
Schematic Symbol：	https://componentsearchengine.com/symbol.php?partID=232132	PCB Footprint：	https://componentsearchengine.com/footprint.php?partID=232132
3D View：	https://componentsearchengine.com/viewer/3D.php?partID=232132	Samacsys PartID：	232132
Samacsys Image：	https://componentsearchengine.com/Images/9/DS1307ZN+T &R.jpg	Samacsys Thumbnail Image：	https://componentsearchengine.com/Thumbnails/1/DS1307ZN+T &R.jpg
Samacsys Pin Count：	8	Samacsys Part Category：	Integrated Circuit
Samacsys Package Category：	Small Outline Packages	Samacsys Footprint Name：	21-0041
Samacsys Released Date：	2015-11-27 03:38:06	Is Samacsys：	N
最大时钟频率：	0.032 MHz	信息访问方法：	I2C
中断能力：	N	JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e3	长度：	4.9 mm
湿度敏感等级：	1	端子数量：	8
计时器数量：	1	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260	电源：	5 V
认证状态：	Not Qualified	座面最大高度：	1.75 mm
子类别：	Timer or RTC	最大供电电压：	5.5 V
最小供电电压：	4.5 V	标称供电电压：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子面层：	Matte Tin (Sn)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	最短时间：	SECONDS
处于峰值回流温度下的最长时间：	NOT SPECIFIED	易失性：	YES
宽度：	3.9 mm	uPs/uCs/外围集成电路类型：	TIMER, REAL TIME CLOCK
Base Number Matches：	1

DS1307Z/TR 数据手册

DS1307 64 x 8, Serial, I²C Real-Time Clock

PIN DESCRIPTION

NAME

FUNCTION

Connections for Standard 32.768kHz Quartz Crystal. The internal oscillator circuitry is

designed for operation with a crystal having a specified load capacitance (C_L) of 12.5pF.

X1 is the input to the oscillator and can optionally be connected to an external 32.768kHz

oscillator. The output of the internal oscillator, X2, is floated if an external oscillator is

connected to X1.

Note: For more information on crystal selection and crystal layout considerations, refer to

Application Note 58: Crystal Considerations with Dallas Real-Time Clocks.

Backup Supply Input for Any Standard 3V Lithium Cell or Other Energy Source. Battery

voltage must be held between the minimum and maximum limits for proper operation.

Diodes in series between the battery and the V_BATpin may prevent proper operation. If a

backup supply is not required, V_BATmust be grounded. The nominal power-fail trip point

(V_PF) voltage at which access to the RTC and user RAM is denied is set by the internal

circuitry as 1.25 x V_BATnominal. A lithium battery with 48mAhr or greater will back up

the DS1307 for more than 10 years in the absence of power at +25°C.

V_BAT

UL recognized to ensure against reverse charging current when used with a lithium

battery. Go to: www.maxim-ic.com/qa/info/ul/.

GND

SDA

Ground

Serial Data Input/Output. SDA is the data input/output for the I²C serial interface. The

SDA pin is open drain and requires an external pullup resistor.

Serial Clock Input. SCL is the clock input for the I²C interface and is used to synchronize

data movement on the serial interface.

SCL

Square Wave/Output Driver. When enabled, the SQWE bit set to 1, the SQW/OUT pin

outputs one of four square-wave frequencies (1Hz, 4kHz, 8kHz, 32kHz). The SQW/OUT

pin is open drain and requires an external pullup resistor. SQW/OUT operates with either

SWQ/OUT

V_CCor V_BATapplied.

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 to the

device and V_CCis below V_TP, read and writes are inhibited. However, the timekeeping

function continues unaffected by the lower input voltage.

V_CC

DETAILED DESCRIPTION

The DS1307 is a low-power clock/calendar with 56 bytes of battery-backed SRAM. 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 DS1307 operates as a slave device on the I²C bus. Access is obtained by implementing a START

condition and providing a device identification code followed by a register address. Subsequent registers

can be accessed sequentially until a STOP condition is executed. When V_CCfalls below 1.25 x V_BAT, the

device terminates an access in progress and resets the device address counter. Inputs to the device will not

be recognized at this time to prevent erroneous data from being written to the device from an out-of-

tolerance system. When V_CCfalls below V_BAT, the device switches into a low-current battery-backup

mode. Upon power-up, the device switches from battery to V_CCwhen V_CCis greater than V_BAT+0.2V and

recognizes inputs when V_CCis greater than 1.25 x V_BAT. The block diagram in Figure 1 shows the main

elements of the serial RTC.

6 of 15

1...3 4 567 8 9...15

下载PDF

与DS1307Z/TR相关器件

型号	品牌	描述	获取价格	数据表
DS1307Z+	MAXIM	64 x 8, Serial, I2C Real-Time Clock	获取价格
DS1307Z+T&R	MAXIM	Real Time Clock, Volatile, 1 Timer(s), CMOS, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOIC-8	获取价格
DS1307Z+T&R	MAXIM	64 x 8, Serial, I2C Real-Time Clock	获取价格
DS1307Z+TR	MAXIM	64 x 8, Serial, I2C Real-Time Clock	获取价格
DS1307ZN	MAXIM	64 x 8, Serial, I2C Real-Time Clock	获取价格
DS1307ZN	DALLAS	64 X 8 Serial Real Time Clock	获取价格

产品中心

服务支持

精选活动

关于我们

帮助中心

DS1307Z/TR

DS1307Z/TR 技术参数

DS1307Z/TR 数据手册

与DS1307Z/TR相关器件

与DS1307Z/TR相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

DS1307Z/TR

DS1307Z/TR 技术参数

DS1307Z/TR 数据手册

与DS1307Z/TR相关器件

与DS1307Z/TR相关文章

您还可以找

您在本页遇到什么问题？