X1227V8I-2.7A Datasheet

IC型號：
X1227V8I-2.7A
PDF描述：
Real Time Clock/Calendar/CPU Supervisor with EEPROM
文件大小：
442.52KB
PDF頁數(shù)：
28頁
芯片廠家：
XICOR

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New Features

Repetitive Alarms &

Temperature Compensation

4K (512 x 8)

X1227

APPLICATIONS

鈥?/div>

2-Wire

鈩?/div>

RTC

Real Time Clock/Calendar/CPU Supervisor with EEPROM

FEATURES

鈥?Real Time Clock/Calendar

鈥?Tracks time in Hours, Minutes, and Seconds

鈥?Day of the Week, Day, Month, and Year

鈥?2 Polled Alarms (Non-volatile)

鈥?Settable on the Second, Minute, Hour, Day of the

Week, Day, or Month

鈥?Repeat Mode (periodic interrupts)

鈥?Oscillator Compensation on chip

鈥?Internal feedback resistor and compensation

capacitors

鈥?64 position Digitally Controlled Trim Capacitor

鈥?6 digital frequency adjustment settings to 鹵30ppm

鈥?CPU Supervisor Functions

鈥?Power On Reset, Low Voltage Sense

鈥?Watchdog Timer (SW Selectable: 0.25s, 0.75s,

1.75s, off)

鈥?Battery Switch or Super Cap Input

鈥?4K x 8 Bits of EEPROM

鈥?64-Byte Page Write Mode

鈥?8 modes of Block Lock鈩?Protection

鈥?Single Byte Write Capability

鈥?High Reliability

鈥?Data Retention: 100 years

鈥?Endurance: 100,000 cycles per byte

鈥?2-Wire鈩?Interface interoperable with I2C*

鈥?400kHz data transfer rate

鈥?Low Power CMOS

鈥?1.25碌A(chǔ) Operating Current (Typical)

鈥?Small Package Options

鈥?8-Lead SOIC and 8-Lead TSSOP

Utility Meters

HVAC Equipment

Audio / Video Components

Set Top Box / Television

Modems

Network Routers, Hubs, Switches, Bridges

Cellular Infrastructure Equipment

Fixed Broadband Wireless Equipment

Pagers / PDA

POS Equipment

Test Meters / Fixtures

Of鏗乧e Automation (Copiers, Fax)

Home Appliances

Computer Products

Other Industrial / Medical / Automotive

DESCRIPTION

The X1227 device is a Real Time Clock with clock/

calendar, two polled alarms with integrated 512x8

EEPROM, oscillator compensation, CPU Supervisor

(POR/LVS and WDT) and battery backup switch.

The oscillator uses an external, low-cost 32.768kHz

crystal. All compensation and trim components are

integrated on the chip. This eliminates several external

discrete components and a trim capacitor, saving

board area and component cost.

BLOCK DIAGRAM

OSC

Compensation

Timer

Calendar

Logic

Time

Keeping

Registers

(SRAM)

Battery

Switch

Circuitry

BACK

32.768kHz

Oscillator

Frequency

Divider

1Hz

SCL

SDA

RESET

Watchdog

Timer

Low Voltage

Reset

Mask

Serial

Interface

Decoder

Control

Decode

Logic

Control/

Registers

(EEPROM)

Status

Registers

(SRAM)

Alarm

Compare

Alarm Regs

(EEPROM)

EEPROM

ARRAY

*I2C is a Trademark of Philips.

REV 1.1.20 1/13/03

www.xicor.com

Characteristics subject to change without notice.

1 of 28

標(biāo)準(zhǔn)包裝
100
類別
集成電路 (IC)
家庭
時鐘/計時 - 實時時鐘
系列
-
類型
時鐘/日歷
特點
警報器，閏年，監(jiān)控器，監(jiān)視計時器
存儲容量
-
時間格式
HH:MM:SS（12/24 小時）
數(shù)據(jù)格式
YY-MM-DD-dd
接口
I²C，2 線串口
電源電壓
2.7 V ~ 5.5 V
電壓 - 電源，電池
1.8 V ~ 5.5 V
工作溫度
-40°C ~ 85°C
安裝類型
表面貼裝
封裝/外殼
8-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝
8-TSSOP
包裝
管件

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X1227V8I-2.7A Datasheet

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