器件名称: ISL12025
功能描述: Real-Time Clock/Calendar with EEPROM
文件大小: 401.53KB 共27页
简 介:
ISL12025
New Features
Data Sheet
October 18, 2006
FN6371.1
Real-Time Clock/Calendar with EEPROM
The ISL12025 device is a low power real-time clock with timing and crystal compensation, clock/calender, 64-bit unique ID, power-fail indicator, two periodic or polled alarms, intelligent battery backup switching, CPU Supervisor and integrated 512 x 8-bit EEPROM, in a 16 Bytes per page format. 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.
Features
Real-Time Clock/Calendar - Tracks Time in Hours, Minutes, and Seconds - Day of the Week, Day, Month, and Year 64-bit Unique ID Two Non-Volatile Alarms - Settable on the Second, Minute, Hour, Day of the Week, Day, or Month - Repeat Mode (periodic interrupts) Automatic Backup to Battery or SuperCap On-Chip Oscillator Compensation - Internal Feedback Resistor and Compensation Capacitors - 64 Position Digitally Controlled Trim Capacitor - 6 Digital Frequency Adjustment Settings to ±30ppm 512 x 8 Bits of EEPROM - 16-Bytes Page Write Mode (32 total pages) - 8 Modes of Block Lock Protection - Single Byte Write Capability High Reliability - Data Retention: 50 years - Endurance: 2,000,000 Cycles Per Byte I2C* Interface - 400kHz Data Transfer Rate 800nA Battery Supply Current
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