ISL12057 2 Low Cost and Low Power I C RTC Real Time Clock/Calendar Data Sheet March 3, 2011 FN6755.1 Low Power and Low Cost RTC with Alarm Features Function and Dual IRQ Pins Pin Compatible to Maxim DS1337 The ISL12057 device is a low-power, real-time clock that is Functionally Equivalent to Maxim DS1337 pin compatible and functionally equivalent to Maxim DS1337 Real-Time Clock/Calendar with clock/calendar and alarm function. - Tracks Time in Hours, Minutes, and Seconds The oscillator uses an external, low-cost 32.768kHz crystal - Day of the Week, Date, Month, and Year with 6pF load capacitance. The real-time clock tracks time with separate registers for hours, minutes, and seconds. The Dual Interrupts for Frequency Output and Alarm device has calendar registers for date, month, year, and day interrupts of the week. The calendar is accurate through 2099, with Four Selectable Frequency Outputs automatic leap year correction. Two Alarms Pinouts - Settable to the Second, Minute, Hour, Day of the Week, and Date ISL12057 (8 LD SOIC, MSOP) 2 I C Interface TOP VIEW - 400kHz Data Transfer Rate X1 1 8 V DD Small Package Options X2 2 7 IRQ1/F OUT - 8 Ld 2mmx2mm TDFN IRQ2 3 6 SCL - 8 Ld MSOP GND 4 5 SDA - 8 Ld SOIC - Pb-Free (RoHS Compliant) Applications Utility Meters ISL12057 (8 LD TDFN) HVAC Equipment TOP VIEW Audio/Video Components X1 V 1 8 DD Set-Top Box/Television X2 IRQ1/F 2 7 OUT Modems IRQ2 SCL 3 6 Network Routers, Hubs, Switches, Bridges GND 4 5 SDA Cellular Infrastructure Equipment Fixed Broadband Wireless Equipment Pagers/PDA Point Of Sale 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 Copyright Intersil Americas Inc. 2009, 2011. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners.ISL12057 Ordering Information PART PART V RANGE TEMP. RANGE PACKAGE PKG. DD NUMBER MARKING (V) (C) (Pb-Free) DWG. ISL12057IBZ (Notes 1, 2) 12057 IBZ 1.4 to 3.6 -40 to +85 8 Ld SOIC M8.15 ISL12057IUZ (Notes 1, 2) 12057 1.4 to 3.6 -40 to +85 8 Ld MSOP M8.118 ISL12057IRUZ-T 057 1.4 to 3.6 -40 to +85 8 Ld TDFN (Tape and Reel) L8.2x2 (Notes 3, 4) ISL12057EVALZ Evaluation Board NOTES: 1. 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. 2. Add -T* suffix for tape and reel. Please refer to TB347 for details on reel specifications. 3. These Intersil Pb-free plastic packaged products employ special Pb-free material sets molding compounds/die attach materials and NiPdAu plate - e4 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. 4. Please refer to TB347 for details on reel specifications. Block Diagram SDA SECONDS SDA BUFFER 2 I C RTC INTERFACE MINUTES SCL SCL CONTROL BUFFER LOGIC HOURS DAY OF WEEK X1 CRYSTAL RTC DATE OSCILLATOR DIVIDER X2 MONTH YEAR V DD POR FREQUENCY ALARM1 ALARM2 OUT CONTROL REGISTERS IRQ2 INTERNAL SUPPLY IRQ1/F OUT FN6755.1 2 March 3, 2011