rtc-4553ac Epson Electronics America, Inc., rtc-4553ac Datasheet
rtc-4553ac
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rtc-4553ac Summary of contents
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... MQ342-01 Application Manua Real Time Clock Module RTC-4553AC l ...
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In pursuit of "Saving" Technology ,Epson electronic device. Our Lineup of semiconductors, Liquid crystal displays and quartz devices assists in creating the products of our customers' dreams. Epson IS energy savings. • No part of this material may be reproduced ...
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... RTC – 4553AC 1. Overview..........................................................................................1 2. Block Diagram .................................................................................1 3. Terminal description ........................................................................2 3.1. Terminal connections ........................................................................................ 2 3.2. Terminal functions............................................................................................. 2 4. Absolute maximum ratings...............................................................3 5. Recommended operating conditions................................................3 6. Frequency characteristics................................................................3 7. Electrical characteristics ..................................................................4 7.1. DC, AC Characteristics ..................................................................................... 4 7.1. V........................................................................................................................... 4 DD 7.1. V........................................................................................................................... 5 DD 7.2. Timing Chart ..................................................................................................... 6 8. How to use.......................................................................................7 8.1. Registers........................................................................................................... 7 8 ...
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... It incorporates a heat-resistant 32.768 kHz quartz oscillator. The space saving package allows high-density mounting and facilitates automated production. Besides the clock and calendar functions (comprising all items from years to seconds), the RTC-4553 incorporates also bit SRAM and offers other useful features. ...
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... V ±10 ±10%. For backup battery operation, provide — a voltage higher. See Note 1. This pin serves to select the RTC. While CS0 is "L", the microprocessor I can perform register access. While high-impedance state. Connect this pin to the power down detection circuit power down I detection circuit is used, fix the pin at " ...
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... RTC – 4553AC 4. Absolute maximum ratings Item Symbol Power supply voltage V DD Input voltage V IN Output voltage V OUT Storage temperature T STG Soldering conditions T SOL 5. Recommended operating conditions Item Symbol Power supply voltage V DD Operation temperature T OPR 6. Frequency characteristics Item Symbol Frequency precision ...
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... RTC – 4553AC 7. Electrical characteristics 7.1. DC, AC Characteristics 7.1. (1) DC Characteristics Item Symbol Data retention V DH voltage (normal operation) Current consumption (backup operation Output voltage V OL Output leak I OZH current I OZL V IH Input voltage Input current ...
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... RTC – 4553AC 7.1. (1) DC Characteristics Item Symbol Data retention V DH voltage (normal operation) Current consumption (backup operation Output voltage V OL Output leak I OZH current I OZL V IH Input voltage Input current I IL Oscillation T S startup time ...
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... RTC – 4553AC 7.2. Timing Chart SCS OUT OUT OUT WCKL WCKH 1/f CLK DSZ1 DSO DPZ2 DPZ1 Page - HCS t t SWR ...
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... RTC – 4553AC 8. How to use 8.1. Registers 8.1.1. Register Table Address Register designation S10 MI1 MI10 H10 D10 ...
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... RTC – 4553AC 8.1.2. Register Bit Functions Bit name Bit marked "0" Unused bit that cannot be written. Always read as "0". Second to year digit BCD code. Data are written using increment method. "1" indicates PM and "0" indicates AM. This bit can be read also when 24-hour format is PM/ AM selected (24/12=1) ...
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... RTC – 4553AC 8.2. Register Description 8.2.1. Time/Calendar Counter Registers · In normal mode (CNTR = "0"), the counter is incremented by a write operation. (1) Second digit counter Counts values from 0 to 59. The counter can be read and incremented. When the second digit counter is incremented, fractions below full seconds are reset. Therefore a carry occurs 1 second after the increment operation is finished ...
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... RTC – 4553AC 8.2.2. Control Registers (1) Control register Control register 1 performs 12-hour/24-hour display format switching, digit counter reset, 30 second adjustment, and timing pulse signal switching. The register allows data read and write. (a) TPS bit (D3) The TPS bit selects the timing pulse output waveform. ...
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... RTC – 4553AC (2) Control register Control register 2 provides flags for carry detect and power-on-clear detect. (a) BUSY bit (D3) The BUSY bit serves for time/calendar counter digit carry detection. BUSY bit Mode 0 Normal mode 1 Carry If the BUSY bit is "L", carry does not occur for at least 3.9 ms. (Also when read/write is carried out at point " ...
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... RTC – 4553AC 8.3. How to use 8.3.1. Data Read When CS0 is "L", the serial address data input "H" is taken in on the 8th pulse leading edge of SCK the counter control register or RAM address is selected. The data of the selected counter control register or RAM address are output in the following cycle from sync with the SCK trailing edge ...
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... RTC – 4553AC 8.3.5. Sample Operation Flow Charts (1) Time/calendar initialize example (Example for initialization through power-on-clear when battery was changed etc.) START SYSR 1 NO BUSY = 0? YES Increment 1-year digit and 10-year digit Increment 1-month digit and 10-month digit Increment 1-day digit and ...
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... RTC – 4553AC (3) Time/calendar modify example using counter reset (8:00 2:00) START NO BUSY = 0? YES CNTR 1 Write hour digit CNTR 0 Increment 1-hour digit (2 times) END Note 1 If processing is not completed within 3.8 ms, check the BUSY bit again. Note 2 Reset (CNTR digit in example (3)]. Consequently, to change the setting from 11:00 to 2:00, the hour digit must be reset (CNTR For the year, CNTR is used separately for the 1-year digit and 10-year digit ...
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... RTC – 4553AC (7) Time/calendar read example using BUSY bit down transition START PONC=0? If PONC = "1", initialization was YES carried out and data must be set again NO BUSY = 1? YES NO PONC=0? Read time/calendar END 8.3.6. CS1 and CS0 Operation When designing a floating arrangement, take the following into consideration. CS0 can be floating while CS1 = " ...
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... Secondary battery or lithium battery. (Lithium battery requires the diode shown in the resistor R, consult the battery manufacturer. Page - 16 voltages the backup voltage °C to +70 °C 1.0 s/V t 1.6 ms/V R 1.0 s/V t 1.6 ms/V R pin of the RTC must be temporarily set to RTC GND . Regarding the value 342 - 01 ...
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... RTC – 4553AC 8.3.11. Processing of Non-Existent Data (1) If the month digit is incremented while the current setting is January 31, a non-existent setting will result (February 31). Carry from the hour digit will cause this setting to become March 1. Month digit incremented Jan. 31 (2) If the year digit is incremented while the current setting is February leap year, a non-existent setting will result (February non-leap year) ...
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... RTC – 4553AC 8.3.12. Timing Charts (1) Data readout example WR CSo SCK S Don't care IN 1-second digit address S OUT Undefined When specifying the next data read access, the previously accessed address and data appear at S Same applies for reading from SRAM Input at leading edge of SCK ...
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... RTC – 4553AC (3) Time/calendar continuous write example (CNTR=0) WR CSo SCK S Don't care IN S OUT : Undefined The write result appears at S therefore necessary to specify another read or write operation. (When using write access, note that the data of that address will be further incremented by 1.) For continuous write operations, the CS0 must be kept " ...
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... RTC – 4553AC Additional information When CS0 is "L", the serial address data input "H" is taken in on the 8th pulse leading edge of SCK ., the counter control register or RAM address is selected, and data are written as shown below. Time/calendar (CNTR = "0") ...
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... External dimensions 10.1 0.2 #14 #8 5.0 7.4 0 0.05 Min. 0.35 1.27 1.2 9.2. Marking layout RTC – 4553AC ( SOP-14pin ) Model identifier Symbol mark Contents displayed indicate the general markings and display, but are not the standards for the fonts, sizes and positioning 0.6 0.15 3.2 0.1 R4553 AC E 1234A Page - 21 Recommended soldering pattern 1 ...
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... RTC – 4553AC 10. Reference Data (1) Frequency/temperature characteristics = +25 °C Typ -0.035 10 Typ. 0 -50 -100 -150 - Temperature [°C] (2) Frequency/voltage characteristics example Condition : reference, Ta= + Supply Voltage V Note These data are reference values for the sample lot. ...
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... Leakage between pins Leakage between pins may occur if the power is turned on while the device has condensation or dirt on it. Make sure the device is dry and clean before supplying power to it. Fig. 1: Example GND Pattern RTC - 4553 ( SOP-14pin ) or GND. DD Fig. 2: Soldering Conditions of SMD Products ...
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... Application Manual Distributor AMERICA EPSON ELECTRONICS AMERICA, INC. HEADQUARTER 150 River Oaks Parkway, San Jose, CA 95134, U.S.A. Atlanta Office 3010 Royal Blvd. South, Ste. 170,Alpharetta,GA 30005 Boston Office 301Edgewater Place, Ste. 120, Wakefield, MA 01880 Chicago Office 101 Virginia St., Ste. 290, Crystal Lake, IL 60014 El Segundo Office 1960 E ...