RENESAS ISL1209IU10Z-TK

The ISL1209 device is a low power Real Time Clock with Security and Event function timing and crystal compensation, clock/calendar, power fail indicator, periodic or polled alarm, intelligent battery backup switching, and battery-backed user SRAM. The Event Detection function can be used for tamper detection, security or other chassis or generic system monitoring. Upon a valid event detection, the ISL1209 sets the Event Detection bit (EVT bit) in the status register and, can optionally: 1) Issue an Event Output signal (EVDET pin), 2) At the time the event occurred, stop the RTC registers from advancing. The event monitor can function in both main VDD and battery back up modes. The event monitor can also be configured for various input detection rates to optimize power consumption for the application. In addition, the Event Monitor pin (EVIN) has a selectable glitch filter to avoid switch debouncing. 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. The ISL1209'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, or the device can be configured to provide a hardware interrupt via the IRQ pin. There is a repeat mode for the alarm allowing a periodic interrupt every minute, every hour, every day, etc. The device also offers a backup power input pin. This VBAT pin allows the device to be backed up by battery or SuperCap with automatic switchover from VDD to VBAT. The entire ISL1209 device is fully operational from VDD = 2.7V to 5.5V and the clock/calendar portion of the device remains fully operational in battery backup mode down to 1.8V (Standby Mode).

• Real Time Clock/Calendar - Tracks Time in Hours, Minutes, and Seconds - Day of the Week, Day, Month, and Year
• Security and Event Functions
  • Tamper detection with Time Stamp
  • Event Detection During Battery Packed or Normal Modes
  • Selectable Event Input Sampling Rates Allows Low Power Operation
  • Selectable Glitch Filter on Event Input Monitor
• 15 Selectable Frequency Outputs
• Single Alarm
  • Settable to the Second, Minute, Hour, Day of the Week, Day, or Month - Single Event or Pulse Interrupt Mode
• Automatic Backup to Battery or Super Cap

• Utility Meters
• Set Top Box/Modem
• POS Equipment
• Network Routers, Hubs, Switches, Bridges
• Cellular Infrastructure Equipment
• Fixed Broadband Wireless Equipment
• Test Meters/Fixtures
• Vending Machine Management
• Security and Anti Tampering Applications
  • Panel/Enclosure Status
  • Warranty Reporting
  • Time Stamping Applications
  • Patrol/Security Check (Fire or Light Equipment)
• Automotive Applications