Datasheet > ISL12021

ISL12021

更新时间： 2024-10-02 03:44:35

品牌	Logo	应用领域
英特矽尔 - INTERSIL		温度补偿时钟
页数	文件大小	规格书
24页	312K
描述
Real Time Clock with On Chip Temp Compensation 【5ppm

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ISL12021 数据手册

ISL12021

Real Time Clock with On Chip Temp Compensation ±5ppm

Data Sheet

March 30, 2007

FN6451.0

Low Power RTC with V

Battery Backed

Features

• Real Time Clock/Calendar

SRAM and Embedded Temp

Compensation ±5ppm with Auto Day Light

Saving

- Tracks Time in Hours, Minutes and Seconds

- Day of the Week, Day, Month and Year

The ISL12021 device is a low power real time clock with an

embedded Temp sensor for oscillator compensation,

clock/calendar, power fail, low battery monitor, brown out

indicator, single periodic or polled alarms, intelligent battery

backup switching and 128 bytes of battery-backed user

SRAM.

• On-chip Oscillator Compensation Over the Operating

Temp Range

- ±5ppm over -20°C to +70°C

• Day Light Saving Time

- Customer Programmable

• Separate F

OUT

The oscillator uses an external, low-cost 32.768kHz crystal.

The real time clock tracks time with separate registers for

hours, minutes, and seconds. The device has calendar

registers for date, month, year and day of the week. The

calendar is accurate through 2099, with automatic leap year

correction.

- 15 Selectable Frequency Outputs

• 1 Alarm

- Settable to the Second, Minute, Hour, Day of the Week,

Day, or Month

- Single Event or Pulse Interrupt Mode

- Dedicated IRQ output pin

Daylight Savings time adjustment is done automatically,

using parameters entered by the user. Power fail and battery

monitors offer user-selectable trip levels. A time stamp

• Automatic Backup to Battery or Super Cap

- Operation to V

BAT

= 1.8V

function records the time and date of switchover from V

- 1.0µA Battery Supply Current

battery power, and also from battery to V

power.

• Battery Status Monitor, 2 Levels, Selectable by Customer

to:

Pinout

- Seven Selectable Voltages for Each Level

• Power status Brown Out Monitor

ISL12021

(14 LD TSSOP)

TOP VIEW

- Six selectable trip level, from 4.675V to 2.295V

- Separate Low Voltage LVRST pin

• Time Stamp during Power to Battery and Battery to Power

Cross Over

- Time Stamp. First V

to V

, and Last V

BAT

to V

BAT

IRQ

• 128 Bytes Battery-Backed User SRAM

SCL

SDA

BAT

• I C Interface

GND

- 400kHz Clock Frequency

LVRST

OUT

• 14 Ld TSSOP package

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Utility Meters

• POS Equipment

• Medical Application

• Security Related Application

• Vending Machine

• White Goods

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.

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

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与ISL12021相关器件

型号	品牌	获取价格	描述	数据表
ISL12021CVZ	INTERSIL	获取价格	Real Time Clock with On Chip Temp Compensatio
ISL12021CVZ-T	RENESAS	获取价格	REAL TIME CLOCK, PDSO14, ROHS COMPLIANT, PLASTIC, MO-153AC, TSSOP-14
ISL12021IVZ	INTERSIL	获取价格	Real Time Clock with On Chip Temp Compensatio
ISL12021IVZ-T	RENESAS	获取价格	REAL TIME CLOCK, PDSO14, ROHS COMPLIANT, PLASTIC, MO-153AC, TSSOP-14
ISL12022	INTERSIL	获取价格	Real Time Clock with On Chip ±5ppm Temp Compe
ISL12022	RENESAS	获取价格	Low Power RTC with Battery-Backed SRAM and Em
ISL12022IBZ	RENESAS	获取价格	Low Power RTC with Battery-Backed SRAM and Em
ISL12022IBZ	INTERSIL	获取价格	Real Time Clock with On Chip ±5ppm Temp Compe
ISL12022IBZ-T	RENESAS	获取价格	Low Power RTC with Battery-Backed SRAM and Em
ISL12022M	INTERSIL	获取价格	Low Power RTC with Battery Backed SRAM,Integr

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