Datasheet > ISL12020M

ISL12020M

更新时间： 2024-10-02 05:39:35

品牌	Logo	应用领域
英特矽尔 - INTERSIL		电池温度补偿静态存储器
页数	文件大小	规格书
32页	471K
描述
Low Power RTC with Battery Backed SRAM, Integrated ±5ppm Temperature Compensation and Auto Daylight Saving

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ISL12020M 数据手册

Low Power RTC with Battery Backed SRAM,

Integrated ±5ppm Temperature Compensation and

Auto Daylight Saving

ISL12020M

Features

• Embedded 32.768kHz Quartz Crystal in the Package

The ISL12020M device is a low power real time clock

(RTC) with an embedded temperature sensor and

crystal. Device functions include oscillator compensation,

clock/calendar, power fail and low battery monitors,

brownout indicator, one-time, periodic or polled alarms,

intelligent battery backup switching, Battery Reseal™

function and 128 bytes of battery-backed user SRAM.

The device is offered in a 20 Ld DFN module that

contains the RTC and an embedded 32.768kHz quartz

crystal. The calibrated oscillator provides less than

±5ppm drift over the full -40°C to +85°C temperature

range.

• 20 Ld DFN Package (for SOIC version, refer to the

ISL12022M)

• Calendar

• On-chip Oscillator Temperature Compensation

• 10-bit Digital Temperature Sensor Output

• 15 Selectable Frequency Outputs

• Interrupt for Alarm or 15 Selectable Frequency

Outputs

• Automatic Backup to Battery or Supercapacitor

• VDD and Battery Status Monitors

The RTC tracks time with separate registers for hours,

minutes, and seconds. The calendar registers track date,

month, year and day of the week and are accurate

through 2099, with automatic leap year correction.

• Battery Reseal™ Function to Extend Battery Shelf

Life

• Power Status Brownout Monitor

• Time Stamp for Battery Switchover

• 128 Bytes Battery-Backed User SRAM

Daylight Savings time adjustment is done automatically,

using parameters entered by the user. Power fail and

battery monitors offer user-selectable trip levels. The

time stamp function records the time and date of

• I C-Bus™

• RoHS Compliant

switchover from V

to V power, and also from V

BAT BAT

to V

power.

Applications*(see page 31)

• Utility Meters

• POS Equipment

• Printers and Copiers

• Digital Cameras

Typical Application Circuit

Performance Curve

OSCILLATOR ERROR vs TEMPERATURE

3.3V

0.1µF

SCHOTTKY DIODE

BAT54

= 5.5V

BAT

10k 10k 10k

-1

-2

-3

-4

-5

BAT

BATTERY

3.0V

= 2.7V

GND IRQ/F

VDD

SCL

OUT

SCL

0.1µF

MCU

INTERFACE

= 3.3V

SDA

GND

ISL12020M

IRQ/FOUT

-40

-20

TEMPERATURE (°C)

February 11, 2010

FN6667.4

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

I C Bus™ is a trademark owned by NXP Semiconductors Netherlands, B.V.

All other trademarks mentioned are the property of their respective owners.

12 3 4 5 6 7...32

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与ISL12020M相关器件

型号	品牌	获取价格	描述	数据表
ISL12020M_11	INTERSIL	获取价格	High-Accuracy RTC Modules, Feature-Rich RTCs
ISL12020MIRZ	INTERSIL	获取价格	Low Power RTC with Battery Backed SRAM, Integ
ISL12020MIRZ	RENESAS	获取价格	Real Time Clock with Embedded Crystal, ±5ppm
ISL12020MIRZ-T	INTERSIL	获取价格	Low Power RTC with Battery Backed SRAM, Integ
ISL12020MIRZ-T	RENESAS	获取价格	Real Time Clock with Embedded Crystal, ±5ppm
ISL12020MIRZ-T13	RENESAS	获取价格	Real Time Clock
ISL12020MIRZ-T7	RENESAS	获取价格	Real Time Clock
ISL12020MIRZ-T7A	RENESAS	获取价格	Real Time Clock with Embedded Crystal, ±5ppm
ISL12021	INTERSIL	获取价格	Real Time Clock with On Chip Temp Compensatio
ISL12021CVZ	INTERSIL	获取价格	Real Time Clock with On Chip Temp Compensatio

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