Real Time Clock - SPI Bus RV3049C3 Specifications 2011/65/EU Product Parameters 3.70 (typ) 2.50 (typ) 0.90 (max) SOLDER PAD LAYOUT 0.80 1 10 5 6 0.80 0.60 3.00 0.30 0.50 0.80 TOP VIEW PAD CONNECTION PAD CONNECTION 1 Clock output enable (CLKOE) 6 Ground (VSS) 2 Supply (VDD) 7 Interrupt output (INT) 3 Clock output (CLKOUT) 8 Chip select (CS) 4 Serial clock input (SCL) 9 Backup supply voltage 5 Serial data output (SDO) 10 Serial data input (SDI) Option Codes RV3049C3 Frequencies (selectable): 32.768kHz, 1024Hz, 32Hz & 1Hz Frequency tolerance @ 25°C: ±10ppm typ, ±20ppm max Time accuracy: ±3ppm max (0.26s/day) @ 25°C ±6ppm max (0.52s/day), -40+85°C ±25ppm max (2.17s/day), -40+85°C ±8ppm max (0.70s/day), -40+125°C ±30ppm max (2.60s/day), -40+125°C Operating temperature range: -40 to +85°C Extended op. temp range: -40 to +125°C Storage temperature range: -55 to +125°C Supply voltage (VDD): SPI bus active 1.8 ~ 5.5V Time-keeping mode 1.3 ~ 5.5V Supply current (VDD=3.0V): 0.80μA typ, 1.0μA max Shock and vibration resistance: ±5ppm, 5,000g, 0.3ms, ½ sine ±5ppm, 20g, 10.0 ~ 2,000Hz Soldering condition: Reflow, 260°C, 20 sec max A B D E see above Standard. Optional - Please specify required code(s) when ordering Features Ordering Information Temperature compensated accuracy Product + option code eg: RV3049C3/B ±25ppm -40+85°C Option code X (eg RV3049C3/X) denotes a custom spec. AEC Q200 Rev C compliant Compliant with 4-wire SPI-Bus Backup battery input (internal switchover) Programmable alarm, timer and interrupt Available on T&R - 1k or 3k pcs per reel. Evaluation / development board & manual available on request Description The RV3049C3 is a Real Time Clock Module with embedded crystal. This RTC has a 4-wire serial interface (SPI-Bus) and offers temperature compensated time. The STC (Smart Temperature Compensation) can be factory calibrated to achieve a very high time accuracy of ±6ppm over -40°C to +85°C (option A) and ± 8ppm over -40°C to +125°C (option C). Block Diagram Beside standard RTC functions, it includes a Backup-Battery Input with internal switchover function, a programmable trickle-charge circuitry, an integrated temperature sensor with digital-output and offers 8 Bytes RAM and 2 Bytes EEPROM for customer application. The calendar function tracks year and leap-year flags. The clock tracks second, minute and hour in 24-hour format. Programmable alarm setting and universal timer functions increase flexibility. Manufactured by Micro Crystal Stocked & distributed by Golledge Tel: +44 1460 256 100 24 May 2012 Fax: +44 1460 256 101 E-mail: [email protected] Web: www.golledge.com