DATASHEET ISL12024 FN6370 Rev 3.00 Real-Time Clock/Calendar with Embedded Unique ID August 18, 2008 The ISL12024 device is a micro-power real-time clock with Features embedded 64-bit unique ID, timing and crystal Real-Time Clock/Calendar compensation, clock/calender, power-fail indicator, two - Tracks Time in Hours, Minutes, and Seconds periodic or polled alarms, intelligent battery backup - Day of the Week, Day, Month and Year switching, and integrated 512x8-bit EEPROM configured in - 3 Selectable Frequency Outputs 16 Bytes per page. 64-bit Unique ID The oscillator uses an external, low-cost 32.768kHz crystal. Two Non-Volatile Alarms The real-time clock tracks time with separate registers for - Settable on the Second, Minute, Hour, Day of the Week, hours, minutes, and seconds. The device has calendar Day or Month registers for date, month, year and day of the week. The - Repeat Mode (Periodic Interrupts) calendar is accurate through 2099, with automatic leap year correction. Automatic Backup to Battery or Super Cap On-Chip Oscillator Compensation Ordering Information - Internal Feedback Resistor and Compensation PART TEMP Capacitors NUMBER PART V RANGE PACKAGE PKG. DD - 64 Position Digitally Controlled Trim Capacitor (Note) MARKING RANGE (C) (Pb-free) DWG. - 6 Digital Frequency Adjustment Settings to 30ppm ISL12024IBZ* 12024 IBZ 2.7V to -40 to +85 8 Ld SOIC M8.15 512x8-Bits of EEPROM 5.5V - 16-Bytes Page Write Mode (32 total pages) ISL12024IVZ* 2024 IVZ 2.7V to -40 to +85 8 Ld TSSOP M8.173 - 8 Modes of BlockLock Protection 5.5V - Single Byte Write Capability *Add -T suffix for tape and reel. Please refer to TB347 for details on High Reliability reel specifications. - Data Retention: 50 years NOTE: These Intersil Pb-free plastic packaged products employ - Endurance: 2,000,000 Cycles Per Byte special Pb-free material sets, molding compounds/die attach 2 materials, and 100% matte tin plate plus anneal (e3 termination finish, I C Bus which is RoHS compliant and compatible with both SnPb and Pb-free - 400kHz Data Transfer Rate soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free 800nA Battery Supply Current requirements of IPC/JEDEC J STD-020. Package Options - 8 Ld SOIC and 8 Ld TSSOP Packages Pinouts - Pin-Compatible with the ISL12026 ISL12024 Pb-Free (RoHS Compliant) (8 LD SOIC) TOP VIEW Applications X1 V DD 1 8 Utility Meters X2 V BAT 2 7 Audio Video Equipment SCL IRQ/F OUT 3 6 Modems GND SDA 4 5 Network Routers, Hubs, Switches, Bridges Cellular Infrastructure Equipment ISL12024 (8 LD TSSOP) Fixed Broadband Wireless Equipment TOP VIEW Pagers/PDA V BAT SCL 1 8 POS Equipment V DD SDA 2 7 X1 GND Test Meters/Fixtures 3 6 X2 IRQ/F 4 5 OUT Office Automation (Copiers, Fax) Computer Products Security Related Application FN6370 Rev 3.00 Page 1 of 25 August 18, 2008ISL12024 Block Diagram OSC COMPENSATION X1 TIMER TIME BATTERY V DD FREQUENCY 1Hz 32.768kHz OSCILLATOR KEEPING SWITCH CALENDAR DIVIDER CIRCUITRY V BAT REGISTERS X2 LOGIC (SRAM) IRQ/F OUT SELECT STATUS CONTROL/ CONTROL COMPARE SERIAL REGISTERS SCL REGISTERS ALARM DECODE INTERFACE (EEPROM) LOGIC (SRAM) DECODER ALARM REGS SDA (EEPROM) 8 4k EEPROM ARRAY Pin Descriptions PIN NUMBER SOIC TSSOP SYMBOL DESCRIPTION 1 3 X1 The X1 pin is the input of an inverting amplifier and is intended to be connected to one pin of an external 32.768kHz quartz crystal. X1 can also be driven directly from a 32.768kHz source. (See Application Section on page 20.) 2 4 X2 The X2 pin is the output of an inverting amplifier and is intended to be connected to one pin of an external 32.768kHz quartz crystal. (See Application Section on page 20.) 35 IRQ/F Interrupt Output/Frequency Output is a multi-functional pin that can be used as interrupt or frequency OUT output pin. The function is set via the control register. This output is an open drain configuration. 4 6 GND Ground. 5 7 SDA Serial Data (SDA) is a bidirectional pin used to transfer serial data into and out of the device. It has an open drain output and may be wire ORed with other open drain or open collector outputs. 6 8 SCL The Serial Clock (SCL) input is used to clock all serial data into and out of the device. The input buffer on this pin is always active (not gated). 71 V This input provides a backup supply voltage to the device. V supplies power to the device in the event BAT BAT that the V supply fails. This pin should be tied to ground if not used. DD 82 V Power Supply. DD FN6370 Rev 3.00 Page 2 of 25 August 18, 2008 MASK