2线RTC实时时钟进度/日历/ CPU监控器， EEPROM 2-Wire RTC Real TimeClock/Calendar/CPU Supervisor with EEPROM
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
