RENESAS ISL12008IB8Z

The ISL12008 device is a low power real time clock with timing and crystal compensation, clock/calendar, power fail indicator, software alarm, and intelligent battery backup switching. The oscillator uses an external, low-cost 32.768kHz crystal. The real time clock tracks time with separate registers for hours, minutes, seconds, and sub-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. The ISL12008's powerful alarm can be set to any clock/calendar value for a match. For example, every minute, every Tuesday or at 5:23 AM on March 21. The alarm status is available by checking the Status Register. The device also offers a backup power input pin. This VBAT pin allows the device to be backed up by battery or super capacitor with automatic switchover from VDD to VBAT. The entire ISL12008 device is fully operational from 2.7V to 5.5V and the clock/calendar portion of the device remains fully operational down to 1.8V in battery mode.

• Pin Compatible to ST M41T00S and Maxim DS1340
• Functionality Equivalent to ST M41T00S and Maxim DS1340
• Real Time Clock/Calendar - Tracks Time in Hours, Minutes, Seconds and Sub-seconds - Day of the Week, Day, Month, and Year
• 512Hz Frequency Outputs for On-Chip Crystal Compensation
• Software Alarm - Settable to the Second, Minute, Hour, Day of the Week, Day, or Month
• Automatic Low-Drop Battery Switch for Longest Backup Life
• Power Failure Detection
• Battery ReSeal for Long Shelf Life
• I2C Bus - 400kHz Data Transfer Rate
• 800nA Battery Supply Current
• Small Package Option - 8 Ld SOIC
• Pb-Free (RoHS Compliant)

• 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