描述 Description

Real Time Clock/Calendar/CPU Supervisor with EEPROMFEATURES
? 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
? Frequency Output (SW Selectable: Off, 1Hz, 4096Hz, or 32.768kHz)
? Low Power CMOS
?? — 1.25μA Operating Current (Typical)
? Small Package Options
?? — 14 Ld SOIC and 14 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

特性 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
? Frequency Output (SW Selectable: Off, 1Hz, 4096Hz, or 32.768kHz)
? Low Power CMOS
?? — 1.25μA Operating Current (Typical)
? Small Package Options
?? — 14 Ld SOIC and 14 Ld TSSOP
? Repetitive Alarms
? Temperature Compensation
? Pb-Free Plus Anneal Available (RoHS Compliant)