Datasheet > ISL12028_10

ISL12028_10

更新时间： 2024-09-15 11:47:51

品牌	Logo	应用领域
英特矽尔 - INTERSIL		可编程只读存储器电动程控只读存储器电可擦编程只读存储器时钟
页数	文件大小	规格书
29页	581K
描述
Real Time Clock/Calendar with I2C Busâ¢ and EEPROM

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ISL12028_10 数据手册

ISL12028, ISL12028A

Data Sheet

August 9, 2010

FN8233.8

Real Time Clock/Calendar with I²C Bus™

and EEPROM

Features

• Real Time Clock/Calendar

The ISL12028 device is a low power real time clock with

clock/calendar, power-fail indicator, clock output and crystal

compensation, two periodic or polled alarms (CMOS output),

intelligent battery backup switching, CPU Supervisor,

integrated 512x8-bit EEPROM configured in 16 bytes per

page.

- Tracks time in Hours, Minutes and Seconds

- Day of the Week, Day, Month and Year

- 3 Selectable Frequency Outputs

• Two Non-Volatile Alarms

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

Day, or Month

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.

- Repeat Mode (Periodic Interrupts)

• Automatic Backup to Battery or SuperCap

- Power Failure Detection

- 800nA Battery Supply Current

• On-Chip Oscillator Compensation

- Internal Feedback Resistor and Compensation

Capacitors

The ISL12028 and ISL12028A Power Control Settings are

different. The ISL12028 uses the Legacy Mode Setting, and

the ISL12028A uses the Standard Mode Setting.

- 64 Position Digitally Controlled Trim Capacitor

- 6 Digital Frequency Adjustment Settings to ±30ppm

Applications that have V

> V

will require only the

BAT

ISL12028A. Please refer to “Power Control Operation” on

page 14 for more details. Also, please refer to “I²C

Communications During Battery Backup and LVR Operation”

on page 25 for important details.

• 512x8 Bits of EEPROM:

- 16-Byte Page Write Mode (32 total pages)

- 8 Modes of BlockLock™ Protection

- Single Byte Write Capability

- Data Retention: 50 years

Pinout

- Endurance: >2,000,000 Cycles Per Byte

ISL12028, ISL12028A

(14 LD TSSOP, SOIC)

TOP VIEW

• CPU Supervisor Functions:

- Power On Reset, Low Voltage Sense

- Watchdog Timer (0.25s, 0.75s and 1.75s)

• I²C Interface

BAT

IRQ/F

OUT

- 400kHz Data Transfer Rate

• 14 Ld SOIC and 14 Ld TSSOP Packages

• Pb-Free (RoHS Compliant)

RESET

GND

SCL

SDA

NC = No internal connection

Applications

• Utility Meters

• HVAC Equipment

• Audio/Video Components

• Modems

• Network Routers, Hubs, Switches, Bridges

• Cellular Infrastructure Equipment

• Fixed Broadband Wireless Equipment

• Pagers/PDA

• POS Equipment

• Test Meters/Fixtures

• Office Automation (Copiers, Fax)

• Home Appliances

• Computer Products

• Other Industrial/Medical/Automotive

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.

I²C Bus™ is a trademark owned by NXP Semiconductors Netherlands, B.V.

BlockLock™ is a trademark of Intersil Corporation or one of its subsidiaries. Copyright Intersil Americas Inc. 2005, 2006, 2008, 2010.

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与ISL12028_10相关器件

型号	品牌	获取价格	描述	数据表
ISL12028_1011	INTERSIL	获取价格	Real Time Clock/Calendar with I2C Bus? and EEPROM
ISL12028A	INTERSIL	获取价格	Real Time Clock/Calendar with I2C Bus™ and EE
ISL12028AIB27Z	INTERSIL	获取价格	Real Time Clock/Calendar with I2C Bus™ and EE
ISL12028AIB27Z-T	RENESAS	获取价格	Real Time Clock/Calendar with I<sup>2</sup>C Bus™ and EEPROM; SOIC14
ISL12028AIV27Z	INTERSIL	获取价格	Real Time Clock/Calendar with I2C Bus™ and EE
ISL12028AIV27Z	RENESAS	获取价格	Real Time Clock/Calendar with I<sup>2</sup>C Bus™ and EEPROM; SOIC14
ISL12028IB27AZ	INTERSIL	获取价格	Real Time Clock/Calendar with EEPROM
ISL12028IB27AZ-T	INTERSIL	获取价格	Real Time Clock/Calendar with EEPROM
ISL12028IB27Z	INTERSIL	获取价格	Real Time Clock/Calendar with EEPROM
ISL12028IB27Z-T	INTERSIL	获取价格	Real Time Clock/Calendar with EEPROM

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