ISL12024

Features:

• Real-Time Clock/Calendar
- Tracks Time in Hours, Minutes, and Seconds
- Day of the Week, Day, Month, and Year
- 3 Selectable Frequency Outputs
• 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 BlockLock™ 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
• Package Options
- 8 Ld SOIC and 8 Ld TSSOP Packages
- Pin-compatible with the ISL12026
• Pb-Free Plus Anneal Available (RoHS Compliant)




Application

• Utility Meters
• Audio Video Equipment
• Modems
• Network Routers, Hubs, Switches, Bridges
• Cellular Infrastructure Equipment
• Fixed Broadband Wireless Equipment
• Pagers/PDA
• POS Equipment
• Test Meters/Fixtures
• Office Automation (Copiers, Fax)
• Computer Products
• Security Related Application




Pinout






Specifications

Voltage on V_DD, V_BAT, SCL, SDA, and IRQ/F_OUT Pins
(respect to ground) . . . . . . . . . . . . . . . . . . . . . ... -0.3V to 6.0V
Voltage on X1 and X2 Pins
(respect to ground) . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 2.5V
Latchup (Note 1) . . . . . . . . . . . . . . . . Class II, Level B @ +85
ESD Rating (MIL-STD-883, Method 3014) . . . . . . . . . . . .>±2kV
ESD Rating (Machine Model) . . . . . . . . . . . . . . . . . . . . . .>175V
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

Description

The ISL12024 device is a micro-power real-time clock with embedded 64-bit unique ID, timing and crystal compensation, clock/calender, power-fail indicator, two periodic or polled alarms, intelligent battery backup switching, and integrated 512x8-bit EEPROM configured in 16 Bytes per page. 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 ISL12024 has calendar registers for date, month, year and day of the week. The calendar is accurate through 2099, with automatic leap year correction.