DS1202S Dallas Semiconductor, DS1202S Datasheet
DS1202S
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DS1202S Summary of contents
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... SOIC DS1202N 8–pin DIP (IND) DS1202SN 16–pin SOIC (IND) DS1202SN–8 8–pin SOIC (IND) DESCRIPTION The DS1202 Serial Timekeeping Chip contains a real time clock/calendar and 24 bytes of static RAM. It com- municates with a microprocessor via a simple serial in- terface. The real time clock/calendar provides seconds, minutes, hours, day, date, month, and year information ...
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... DS1202, DS1202S OPERATION The main elements of the Serial Timekeeper are shown in Figure 1: shift register, control logic, oscillator, real time clock, and RAM. To initiate any transfer of data, RST is taken high and eight bits are loaded into the shift register providing both address and command informa- tion ...
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... The static RAM bytes addressed consecutively in the RAM address space. RAM BURST MODE The RAM command byte specifies burst mode opera- tion. In this mode, the 24 RAM registers can be consec- utively read or written (see Figure 4) starting with bit 0 of address 0. DS1202, DS1202S 032697 3/11 ...
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... DS1202, DS1202S REGISTER SUMMARY A register data format summary is shown in Figure 4. CRYSTAL SELECTION A 32.768 KHz crystal, can be directly connected to the DS1202 via pins 2 and 3 (X1, X2). The crystal selected for use should have a specified load capacitance (CL pF. The crystal is connected directly to the X1 and X2 ...
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... RAM DATA RAM DATA DS1202, DS1202S CH 10 SEC SEC 0 10 MIN MIN DATE DATE MONTH DAY 10 YEAR ...
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... DS1202, DS1202S ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability ...
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... CCH CCH V =5V 250 CWH CWH CDZ CDZ V =5V CC DS1202, DS1202S ( 2.0 to 5.5V*) CC TYP MAX UNITS NOTES 800 200 0.5 MHz MHz 2.0 2000 ns ns 500 ...
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... DS1202, DS1202S TIMING DIAGRAM: READ DATA TRANSFER Figure 5 RESET CLOCK t DC DATA INPUT/ OUTPUT TIMING DIAGRAM: WRITE DATA TRANSFER Figure 6 RESET CLOCK DATA INPUT/ OUTPUT NOTES: 1. All voltages are referenced to ground. 2. Logic one voltages are specified at a source current capacitive loads ...
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... I specification PKG 8–PIN DIM MIN MAX A IN. 0.360 0.400 MM B IN. 0.240 0.260 MM C IN. 0.120 0.140 MM D IN. 0.300 0.325 MM E IN. 0.015 0.040 MM F IN. 0.110 0.140 MM G IN. 0.090 0.110 MM H IN. 0.320 0.370 MM J IN. 0.008 0.012 MM K IN. 0.015 0.021 MM DS1202, DS1202S 032697 9/11 ...
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... DS1202, DS1202S DS1202S SERIAL TIMEKEEPER 16–PIN SOIC 032697 10/11 phi PKG DIM A IN IN. E IN. F IN. G IN. H IN. J IN 16–PIN MIN MAX 0.500 0.511 MM 12.70 12.99 0.290 0.300 MM 7.37 7.65 0.089 0.095 MM 2.26 2.41 0.004 0.012 MM 0.102 0.30 0.094 0.105 MM 2.38 2.68 0.050 BSC MM 1 ...
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... DS1202S8 8–PIN SOIC 200 MIL 0–8 deg. typ. C DS1202, DS1202S PKG 8–PIN DIM MIN MAX A IN. 0.203 0.213 MM 5.16 5.41 B IN. 0.203 0.213 MM 5.16 5.41 C IN. 0.070 0.074 MM 1.78 1.88 E IN. 0.004 0.010 MM 0.102 0.390 F IN. 0.074 0.84 MM 1.88 2.13 G IN. 0.050 BSC MM 1.27 BSC H IN. ...