Datasheet > EM3027SDSTP14

EM3027SDSTP14

更新时间： 2024-02-11 08:57:03

品牌	Logo	应用领域
EMMICRO		晶体电池温度补偿时钟
页数	文件大小	规格书
28页	1086K
描述
Real Time Clock with I2C or SPI, Crystal Temperature Compensation, Battery Switchover and Trickle Charger

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EM3027SDSTP14 技术参数

是否Rohs认证：	符合	生命周期：	Contact Manufacturer
包装说明：	TSSOP, TSSOP14,.25	Reach Compliance Code：	unknown
风险等级：	5.78	信息访问方法：	SERIAL, 4 WIRE/SPI
中断能力：	Y	JESD-30 代码：	R-PDSO-G14
端子数量：	14	最高工作温度：	125 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装等效代码：	TSSOP14,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源：	1.5/5 V	认证状态：	Not Qualified
子类别：	Timer or RTC	表面贴装：	YES
技术：	CMOS	温度等级：	AUTOMOTIVE
端子形式：	GULL WING	端子节距：	0.635 mm
端子位置：	DUAL	最短时间：	SECONDS
易失性：	NO	Base Number Matches：	1

EM3027SDSTP14 数据手册

EM MICROELECTRONIC - MARIN SA

EM3027

Real Time Clock with I2C or SPI, Crystal Temperature

Compensation, Battery Switchover and Trickle Charger

Description

Features

The EM3027 is an Ultra Low Power CMOS real-time

clock IC with two serial interface modes: I2C or SPI. The

interface mode is selected by the chip version (see §12).

 Fully operational from 2.1 to 5.5V

 Supply current typically 600 nA at 1.4V

 Thermal compensated crystal frequency

 Oscillator stability 0.5 ppm / Volt

The basic clock is obtained from the 32.768 kHz crystal

oscillator. A thermal compensation of the frequency is

based on the temperature measurement and calculation

of the correction value. The temperature can be

measured internally or be input by an external application

to the register.

 Counter for seconds, minutes, hours, day of week,

date months, years in BCD format and alarm

 Leap year compensation

 16-bits timer with 2 working modes

 Two low voltage detection levels V_Low1, V_Low2

 Automatic supply switchover

 Serial communication via I2C (I²C-bus specification

Rev. 03 compatible – see §10.2) or SPI (3-line SPI-

bus with separate combinable data input and output)

The chip provides clock and calendar information in BCD

format with alarm possibility. The actual contents are

latched at the beginning of a read transmission and

afterwards data are read without clock counter data

corruption.

An integrated 16-bit timer can run in Zero-Stop or Auto-

Reload mode.

 Thermometer readable by the host

 Trickle charger to maintain battery charge

 Integrated oscillator capacitors

An interrupt request signal can be provided through

INT/IRQ pin generated from alarm, timer, voltage

detector and Self-Recovery system.

 Two EEPROM and 8 RAM data bytes for application

 Digital Self-Recovery system

An integrated trickle charger allows recharging backup

supply V_Backfrom the main supply voltage V_CCthrough

internal resistor(s). The internal device supply will

switchover to V_CCwhen V_CCis higher than V_Backand vice

versa.

 No busy states and no risk of corrupted data while

accessing

 One hour periodical configuration registers refresh

 Support for standard UL1642 for Lithium batteries

 Standard temperature range: -40°C to +85°C

 Extended temperature range: -40°C to +125°C

 Packages: TSSOP8, TSSOP14, SO8.

The device operates over a wide 1.4 to 5.5V supply

range and requires only 900 nA at 5V. It can detect

internally two supply voltage levels.

Applications

 Utility meters

Block Diagram

 Battery operated and portable equipment

 Consumer electronics

 White/brown goods

 Pay phones

EM3027

Temperature

Sensor

 Cash registers

 Personal computers

 Programmable controller systems

 Data loggers

Watch & Alarm

Oscillator

- Seconds

- Minutes

- Hours

- Days

V_CC

Power

Management

V_REG

V_Back

- Weekdays

- Months

- Years

SCL/SCK

SDA/SO

I2C

or SPI

Timer

CLKOUT

Output

Control

INT or IRQ

CLKOE

EEPROM

www.emmicroelectronic.com

3027-DS.doc, Version 8.0, 25-Jan-13

12 3 4 5 6 7...28

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与EM3027SDSTP14相关器件

型号	品牌	描述	获取价格	数据表
EM3027SDSTP14A	EMMICRO	Real Time Clock with I2C or SPI, Crystal Temperature Compensation, Battery Switchover and	获取价格
EM3027SDSTP14B	EMMICRO	Real Time Clock with I2C or SPI, Crystal Temperature Compensation, Battery Switchover and	获取价格
EM3027SDSWS8	EMMICRO	Real Time Clock with I2C or SPI, Crystal Temperature Compensation, Battery Switchover and	获取价格
EM3027SDXSO8B	EMMICRO	Real Time Clock with I2C or SPI, Crystal Temperature Compensation, Battery Switchover and	获取价格
EM3027SDXTP14	EMMICRO	Real Time Clock with I2C or SPI, Crystal Temperature Compensation, Battery Switchover and	获取价格
EM3027SDXTP14B	EMMICRO	Real Time Clock with I2C or SPI, Crystal Temperature Compensation, Battery Switchover and	获取价格

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