X1227S8I-2.7T1集成電路（IC）的實(shí)時時鐘規(guī)格書PDF中文資料

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.

FEATURES

? Real Time Clock/Calendar

— Tracks Time in Hours, Minutes, and Seconds

— Day of the Week, Day, Month, and Year

? 2 Polled Alarms (Non-volatile)

— Settable on the Second, Minute, Hour, Day of the Week, Day, or Month

— Repeat Mode (periodic interrupts)

? Oscillator Compensation on Chip

— Internal Feedback Resistor and Compensation Capacitors

— 64 Position Digitally Controlled Trim Capacitor

— 6 Digital Frequency Adjustment Settings to ±30ppm

? CPU Supervisor Functions

— Power-On Reset, Low Voltage Sense

— Watchdog Timer (SW Selectable: 0.25s, 0.75s, 1.75s, off)

? Battery Switch or Super Cap Input

? 512 x 8 Bits of EEPROM

— 64-Byte Page Write Mode

— 8 Modes of Block Lock? Protection

— Single Byte Write Capability

? High Reliability

— Data Retention: 100 Years

— Endurance: 100,000 Cycles Per Byte

? 2-Wire? Interface Interoperable with I2C*

— 400kHz Data Transfer Rate

? Low Power CMOS

— 1.25μA Operating Current (Typical)

? Small Package Options

— 8 Ld SOIC and 8 Ld TSSOP

? Repetitive Alarms

? Temperature Compensation

? Pb-Free Plus Anneal Available (RoHS Compliant)

APPLICATIONS

? 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

? Office Automation (Copiers, Fax)

? Home Appliances

? Computer Products

? Other Industrial/Medical/Automotive