Real Time Clock Module with I2C Bus
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- Allen Pitts
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1 Moisture Seitivity Level: MSL=1 FEATURES: With state-of-the-art RTC Technology by Micro Crystal AG RTC module with built-in crystal oscillating at khz 3 timekeeping current at 3 Timekeeping down to 1.0 to I2C bus operating voltage Low operating current of 35 μa (at 400 khz) kHz square wave on power-up to drive a microcontroller in low-power mode Programmable from 1 Hz to kHz; Can be disabled 400 khz I2C serial interface Oscillator stop detection circuit monitors clock operation Accurate programmable watchdog 62.5 ms to 31 min timeout Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century Software clock calibration to compeate deviation of crystal due to temperature Automatic leap year compeation Ultra-small, 3.2 x1.5 mm, lead-free 8-pin ceramic leadless chip carrier APPLICATIONS: Wide range in communication & measuring equipment Commercial & Industrial applicatio Automotive electronics applicatio Wireless communicatio PDA and Palm Pilots Credit Cards with Security Technology STANDARD SPECIFICATIONS: Absolute Maximum Ratings In accordance with the Absolute Maximum Rating System IEC Supply oltage Input oltage Output oltage Output Current Power Dissipation Operating Ambient Temperature Range DD I O IO PD Conditio >GND / <DD TOPR Storage Temperature Range TSTO Stored as bare product Electro Static Discharge oltage ESD HBM1) TA = 25 MM2) TA = 25 GND-0.3 GND-0.2 GND DD+0.3 DD ma W >10 >1000 1) HBM: Human Body Model, according to JESD22-A114. 2) MM: Machine Model, according to JESD22-A115. These data are based on characterization results, not tested in production. Stresses above these listed maximum ratings may cause permanent damage to the device. Exposure beyond specified operating conditio may affect device reliability or cause malfunction. Operating and AC Measurement Conditio 1) Supply oltage DD Operating Ambient Temperature TA Load Capacitance CL Input Rise and Fall Times Input Pulse oltages Input and Output timing ref. oltage *DD *DD pf 0.3*DD 0.7*DD 1) Output Hi-Z is defined as the point where data is no longer driven. isit for Terms & Conditio of Sale
2 Capacitance 1) 2) Input Capacitance Output Capacitance Low-pass filter input time cotant (SDA and SCL) CIN COUT 3) tlp 7 10 pf pf 1) Effective capacitance measured with power supply at 3.6 ; sampled only, not 100% tested. 2) At 25, f = 1MHz. 3) Outputs deselected. Frequency Characteristics Tamb = +25; fosc = khz Frequency Accuracy Frequency vs. Temperature Characteristics Turnover Temperature Aging (first year) Oscillator Start-up oltage Oscillator Start-up Time CLKOUT Duty Cycle f/f Conditio Tamb = +25 f /TOPR TOPR= -40 to +85 TO f/f Start TStart ppm ppm/2 * (TOPR T0)2 (±10%) ppm ppm s % Tamb = seconds DD = 3.0 FCLKOUT = kHz Tamb= FREQUENCY S. TEMPERATURE CHARACTERISTICS isit for Terms & Conditio of Sale
3 Static Characteristics alid for Tamb= -40 to +85; DD= to (except where noted) Supply oltage Supply Current SCL=400kHz No Load Supply Current (standby) SCL = 0Hz; CLKOUT off All inputs DD-0.2 SS+0.2 LOW Level Input oltage HIGH Level Input oltage HIGH Level Output oltage LOW Level Output oltage Pull-up Supply voltage (open drain) Input Leakage Current Output Leakage Current DD 1) IDD1 IDD2 IL IH OH OL ILI ILO Conditio Clock I2C Bus (400kHz) DD = DD = 3.6 DD = 3.0 DD = 2.5 DD = 2.0 DD = DD = 3.6 DD = 3.0 at 25 DD = 2.0 at 25 DD = 1.0 at 25 DD=, IOH = 1.0mA (push-pull) DD=, IOL = 3.0mA (SDA) 1.0 Typ *DD *DD DD CC=, IOL = 1.0mA (SQW, INT ) 0.4 INT IN DD 0 OUT DD Oscillator startup guaranteed down to 1.5 only. isit for Terms & Conditio of Sale
4 I2C Interface Dynamic Characteristics alid for Tamb= -40 to +85; DD= to (except where noted) SCL Clock Frequency START Condition Setup Time (only relevant for a repeated start condition) START Condition Hold Time (after this period the first clock pulse is generated) Data Setup Time 1) Data Hold Time STOP Condition Setup Time Bus Free Time between STOP and START condition SCL LOW time SCL HIGH time SCL and SDA Rise Time SCL and SDA Fall Time Watchdog Output Pulse Width fscl 0 tsu:sta thd:sta tsu:dat thd:dat tsu:sto µs tbuf µs tlow thigh tr tf trec µs ms 96 Typ khz 1. Tramitter must internally provide a hold time to bridge the undefined region (300 max) of the falling edge of SCL. I2C Interface Timing Characteristics isit for Terms & Conditio of Sale
5 PART IDENTIFICATIONS: AB-RTCMC khz-aigz-s7packaging Blank: Bulk T: 1000pcs/reel OUTLINE DIMENSIONS: Recommended Land Pattern Dimeio: mm PIN DESCRIPTIONS: Pin No. Pin Name SDA CLKOUT SS NC DD INT NC SCL Function Serial data; open-drain; requires pull-up resistor Clock Output Ground Not connected Power Supply voltage Interrupt output; open-drain; requires pull-up resistor; active low Not connected Serial clock input; requires pull-up resistor isit for Terms & Conditio of Sale
6 BLOCK DIAGRAM: RECOMMENDED REFLOW PROFILE: Maximum Reflow Conditio in accordance with IPC/JEDEC J-STD-020C -free Temperature Conditio Average Ramp-up Rate (TSmax to TP) 3/second max /s Ramp Down Rate (Tcool) 6/second max /s 8 minutes max m Temperature Min (TSmin) 1 Temperature Max (TSmax) 200 Time Tsmin to Tsmax (ts) 60 ~ 180 sec Time 25 to Peak Temperature (T to-peak) Preheat Time Above Liquidus Temperature Liquidus (TL) Time above Liquidus (tl) ~1 sec Peak Temperature Peak Temperature (TP) Time within 5 of Peak Temperature (tp) ~ 40 sec isit for Terms & Conditio of Sale
7 TAPE & REEL: T = 1000pcs/reel Dimeion: mm ATTENTION: Abracon Corporation s products are COTS Commercial-Off-The-Shelf products; suitable for Commercial, Industrial and, where designated, Automotive Applicatio. Abracon s products are not specifically designed for Military, Aviation, Aerospace, Life-dependant Medical applicatio or any application requiring high reliability where component failure could result in loss of life and/or property. For applicatio requiring high reliability and/or presenting an extreme operating environment, written coent and authorization from Abracon Corporation is required. Please contact Abracon Corporation for more information. isit for Terms & Conditio of Sale
7 OUT1 8 OUT2 9 OUT3 10 OUT4 11 OUT5 12 OUT6 13 OUT7 14 OUT8 15 OUT9 16 OUT10 17 OUT11 18 OUT12 19 OUT13 20 OUT14 21 OUT15 22 OUT16 OUT17 23 OUT18
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