ISL12028, ISL12028A Data Sheet November 30, 2010 FN8233.9 2 Real Time Clock/Calendar with I C Bus Features and EEPROM Real Time Clock/Calendar The ISL12028 device is a low power real time clock with - Tracks time in Hours, Minutes and Seconds clock/calendar, power-fail indicator, clock output and crystal - Day of the Week, Day, Month and Year compensation, two periodic or polled alarms (CMOS output), - 3 Selectable Frequency Outputs intelligent battery backup switching, CPU Supervisor, Two Non-Volatile Alarms integrated 512x8-bit EEPROM configured in 16 bytes per - Settable on the Second, Minute, Hour, Day of the Week, page. Day, or Month The oscillator uses an external, low-cost 32.768kHz crystal. - Repeat Mode (Periodic Interrupts) The real-time clock tracks time with separate registers for Automatic Backup to Battery or SuperCap hours, minutes and seconds. The device has calendar - Power Failure Detection registers for date, month, year and day of the week. The - 800nA Battery Supply Current calendar is accurate through 2099, with automatic leap year correction. On-Chip Oscillator Compensation - Internal Feedback Resistor and Compensation The ISL12028 and ISL12028A Power Control Settings are Capacitors different. The ISL12028 uses the Legacy Mode Setting, and - 64 Position Digitally Controlled Trim Capacitor the ISL12028A uses the Standard Mode Setting. - 6 Digital Frequency Adjustment Settings to 30ppm Applications that have V > V will require only the BAT DD ISL12028A. Please refer to Power Control Operation on 512x8 Bits of EEPROM: 2 page 14 for more details. Also, please refer to I C - 16-Byte Page Write Mode (32 total pages) Communications During Battery Backup and LVR Operation - 8 Modes of BlockLock Protection on page 25 for important details. - Single Byte Write Capability - Data Retention: 50 years Pinout - Endurance: >2,000,000 Cycles Per Byte ISL12028, ISL12028A CPU Supervisor Functions: (14 LD TSSOP, SOIC) TOP VIEW - Power On Reset, Low Voltage Sense - Watchdog Timer (0.25s, 0.75s and 1.75s) X1 1 14 V DD 2 X2 2 13 V BAT I C Interface NC 3 12 IRQ/F OUT - 400kHz Data Transfer Rate NC 4 11 NC NC 5 10 NC 14 Ld SOIC and 14 Ld TSSOP Packages RESET 6 9 SCL Pb-Free (RoHS Compliant) GND 7 8 SDA NC = No internal connection Applications Utility Meters HVAC Equipment Audio/Video Components 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 CAUTION: These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1 1-888-INTERSIL or 1-888-468-3774 Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. 2 I C Bus is a trademark owned by NXP Semiconductors Netherlands, B.V. BlockLock is a trademark of Intersil Corporation or one of its subsidiaries. Copyright Intersil Americas Inc. 2005, 2006, 2008, 2010. All Rights Reserved. All other trademarks mentioned are the property of their respective owners.ISL12028, ISL12028A Ordering Information V TRIP BSW BIT V BAT RESET PART NUMBER PART POINT DEFAULT VOLTAGE TEMP. RANGE PACKAGE (Notes 1, 2, 3) MARKING (V) SETTING (V) (C) (Pb-free) PKG. DWG. ISL12028IB27Z 12028IB27Z V < V BSW = 1 2.63 -40 to +85 14 Ld SOIC M14.15 DD BAT ISL12028IB27AZ 12028IB27 AZ V < V BSW = 1 2.92 -40 to +85 14 Ld SOIC M14.15 DD BAT ISL12028IB30AZ 12028IB30 AZ V < V BSW = 1 3.09 -40 to +85 14 Ld SOIC M14.15 DD BAT ISL12028IBZ 12028IBZ V < V BSW = 1 4.38 -40 to +85 14 Ld SOIC M14.15 DD BAT ISL12028IBAZ 12028IBAZ V < V BSW = 1 4.64 -40 to +85 14 Ld SOIC M14.15 DD BAT ISL12028IV27Z 12028 IV27Z V < V BSW = 1 2.63 -40 to +85 14 Ld TSSOP M14.173 DD BAT ISL12028IV27AZ 12028 27AZ V < V BSW = 1 2.92 -40 to +85 14 Ld TSSOP M14.173 DD BAT ISL12028IV30AZ 12028 30AZ V < V BSW = 1 3.09 -40 to +85 14 Ld TSSOP M14.173 DD BAT ISL12028IVZ 12028 IVZ V < V BSW = 1 4.38 -40 to +85 14 Ld TSSOP M14.173 DD BAT ISL12028IVAZ 12028 IVAZ V < V BSW = 1 4.64 -40 to +85 14 Ld TSSOP M14.173 DD BAT ISL12028AIB27Z 12028AIB 27Z 2.2 BSW = 0 2.63 -40 to +85 14 Ld SOIC M14.15 ISL12028AIV27Z 2028A IV27Z 2.2 BSW = 0 2.63 -40 to +85 14 Ld TSSOP M14.173 NOTES: 1. Add -T* suffix for tape and reel. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD- 020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL12028, ISL12028A. For more information on MSL please see techbrief TB363 Block Diagram OSC COMPENSATION X1 TIMER BATTERY TIME V FREQUENCY 1Hz DD 32.768kHZ SWITCH CALENDAR KEEPING OSCILLATOR DIVIDER V CIRCUITRY REGISTERS BACK X2 LOGIC (SRAM) IRQ/F SELECT OUT STATUS CONTROL/ SCL CONTROL COMPARE SERIAL REGISTERS REGISTERS ALARM DECODE INTERFACE (EEPROM) LOGIC (SRAM) DECODER ALARM REGS SDA (EEPROM) 8 4k EEPROM WATCHDOG LOW VOLTAGE ARRAY TIMER RESET RESET FN8233.9 2 November 30, 2010 MASK