ISL12059 2 Low Cost and Low Power I C Bus Real Time Clock/Calendar Data Sheet June 15, 2009 FN6757.0 Low Power and Low Cost RTC Features The ISL12059 device is a low power real time clock with Real Time Clock/Calendar clock/calendar, and 512Hz/digital output function. - Tracks Time in Hours, Minutes, and Seconds - Day of the Week, Date, Month, and Year The oscillator uses an external, low-cost 32.768kHz crystal. The real time clock tracks time with separate registers for 512Hz Frequency Output hours, minutes, and seconds. The device has calendar 2 I C Bus registers for date, month, year and day of the week. The - 400kHz Data Transfer Rate calendar is accurate through 2099, with automatic leap year correction. Small Package Option - 8 Ld SOIC Package Pinout - Pb-Free (RoHS Compliant) ISL12059 (8 LD SOIC) Low Cost 3V Alternative to M41T00S, DS1340 and TOP VIEW ISL12008 X1 1 8 V Applications DD X2 2 7 FT/OUT Utility Meters NC 3 6 SCL HVAC Equipment GND 4 5 SDA Audio/Video Components Set-Top Box/Television Modems Network Routers, Hubs, Switches, Bridges 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 . Ordering Information PART NUMBER PART V RANGE TEMP. RANGE PACKAGE PKG. DD (Note) MARKING (V) (C) (Pb-Free) DWG. ISL12059IBZ 12059 IBZ 1.4 to 3.6 -40 to +85 8 Ld SOIC M8.15 ISL12059IBZ-T* 12059 IBZ 1.4 to 3.6 -40 to +85 8 Ld SOIC (Tape and Reel) M8.15 *Please refer to TB347 for details on reel specifications. NOTE: 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. 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 registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2009. All Rights Reserved 2 I C Bus All other trademarks mentioned are the property of their respective ownersISL12059 Block Diagram SDA SECONDS SDA BUFFER 2 I C RTC MINUTES INTERFACE SCL SCL CONTROL BUFFER LOGIC HOURS DAY OF WEEK X1 CRYSTAL RTC DATE OSCILLATOR DIVIDER X2 MONTH YEAR V DD POR FREQUENCY OUT CONTROL REGISTERS INTERNAL FT/OUT SUPPLY Pin Descriptions PIN NUMBER SYMBOL DESCRIPTION 1 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. 2 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. 3 NC No Connection. Can be connected to GND or left floating. 4 GND Ground 5 SDA Serial Data (SDA) is a bi-directional 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 SCL The Serial Clock (SCL) input is used to clock all serial data into and out of the device. 7 FT/OUT 512Hz Frequency Output or digital output pin. The function is set via the configuration register. This pin is open drain and requires an external pull-up resistor. It has a default output of high impedance at power-up. 8V Power supply DD FN6757.0 2 June 15, 2009