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RX-4803 Datasheet(PDF) 1 Page - Epson Company |
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RX-4803 Datasheet(HTML) 1 Page - Epson Company |
1 / 2 page Real time clock module Actual size Block diagram Overview High Stability UA ± 3.4 x 10-6 / -40 ºC to +85 ºC ( Equivalent to 9 seconds of month deviation ) UB ± 5.0 x 10 -6 / -40 ºC to +85 ºC ( Equivalent to 13 seconds of month deviation ) UC ± 5.0 x 10 -6 / -30 ºC to +70 ºC AA (+5 ± 5.0) x 10 -6 / +25 ºC High Resolution: 1/100s Time register with capture buffer 32.768 kHz frequency output function FOUT pin output (C-MOS output), CL=30 pF Output selectable: 32.768 kHz, 1024 Hz, 1 Hz The various interrupt Timer Function can be set between 1/ 4096 second and 4095 minutes. Alarm Function can be set to day of week, day, hour, or minute. EVIN input. Time synchronize function with 1PPS signal input Register compatibility: upper compatible with RX-4801. *It is possible to use it by the terminal connection as 32.768 kHz-DTCXO. Pin Function Terminal connection /External dimensions (Unit:mm) RX 4803SA 1. CE 14. DI 2. CLK 13. DO 3. FOUT 12. T2(VPP) 4. N.C. 11. GND 5. TEST 10. / INT 6. VDD 9. EVIN 7. FOE 5.0 7.40.2 8. N.C. SOP14 pin RX 4803LC 1. N.C. 12. EVIN 2. FOE 11. /INT 3. VDD 10. GND 4. FOUT 9. T2(Vpp) 5. CLK 8. DO 6. CE 2.4 2.8 7. DI VSOJ 12pin The metal case inside of the molding compound may be exposed on the top or bottom of this product. This purely cosmetic and does not have any effect on quality, reliability or electrical specs. Specifications (characteristics) Refer to application manual for details. REAL TIME CLOCK MODULE (SPI-Bus) Built-in 32.768 kHz-DTCXO, High Stability RX - 4803 SA/LC Built in frequency adjusted 32.768 kHz crystal unit and DTCXO. 1/100s resolution Time register Interface Type : 4-wire serial interface Interface voltage range : 1.6 V to 5.5 V Temp. compensated voltage range : 2.2 V to 5.5 V Clock supply voltage range : 1.6 V to 5.5 V Selectable clock output (32.768 kHz, 1024 Hz, 1 Hz) The various functions include full calendar, alarm, timer, EVIN input. Epson is prepared Linux driver for this product. (http://www5.epsondevice.com/en/quartz/tech/linux_for_rtc/index.html) The registered trademark Linux® is used pursuant to a sublicense from LMI(Linux Mark Institute) Signal Name I / O Function CE input The chip enable input pin. CLK input The shift clock input pin for serial data transfer. FOUT Output The pin outputs the reference clock signal. ( CMOS output ) TEST input Use by the manufacture for testing. ( Do not connect externally. RX-4803SA only.) VDD - Connected to a positive power supply FOE input The input pin for the FOUT output control. EVIN input External event input. / INT Output Interrupt output (N-ch. open drain). GND - Connected to a ground T2(VPP) - Use by the manufacture for testing. ( Do not connect externally.) DO Output The data output pin for serial data transfer. D I input The data input pin for serial data transfer. Electrical Characteristics Item Symbol Conditions Min. Typ. Max. Unit Interface voltage VDD Interface voltage 1.6 3.0 5.5 V Temp. compensated Voltage VTEM Temp. compensated voltage 2.2 3.0 5.5 V Clock supply voltage VCLK - 1.6 3.0 5.5 V Operating temperature TOPR No condensation -40 +25 +85 ºC Stability f/f UA Ta = -40 ºC to +85 ºC ±3.4 1 10-6 UB Ta =-40 ºC to +85 ºC ±5.0 2 UC Ta = -30 ºC to +70 ºC AA Ta =+25 ºC 5 ± 5.0 3 Current consumption (1) IDD1 Backup Mode FOE = GND, /INT = VDD FOUT output : OFF VDD = 5V - 0.75 3.4 A Current consumption (2) IDD2 VDD = 3V - 0.75 2.1 1) Equivalent to 9 seconds of month deviation. 2)Equivalent to 13 seconds of month deviation. 3) Equivalent to 13 seconds of month deviation. ( excluding offset ) Product Number (Please contact us) RX-4803SA: X1B000132xxxx00 RX-4803LC: X1B000122xxxx00 RX-4803SA RX-4803LC 32.768 kHz-DTCXO Frequency temperature characteristics (Example) Frequency temperature characteristics -30 -25 -20 -15 -10 -5 0 5 10 -45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 Temperature (ºC) Tuning fork X'tal 32.768 kHz DTCXO 32kHz DTCXO 32.768 kHz EVIN CLOCK and CALENDAR TIMER REGISTER ALARM REGISTER FOUT CONTROLLER SYSTEM CONTROLLER and CONTROL REGISTER DIVIDER INTERRUPT CONTROLLER INTERFACE CIRCUIT FOUT FOE / INT CLK DO D I CE *Stop using the glue Any glue must never use it after soldering LC-package to a circuit board.This product has glass on the back side of a package.When glue invasions between circuit board side and glass side, then glass cracks by thermal expansion of glue.In this case a crystal oscillation stops.Consider glue abolition or glue do not touch to LC-package |
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