Rainbow-electronics DS1302 Bedienungsanleitung Seite 1

1 of 15 092801FEATURES§ Real-time clock (RTC) counts seconds,minutes hours, date of the month, month, dayof the week, and year with leap-yearcompensa

DS130210 of 15ABSOLUTE MAXIMUM RATINGS*Voltage on Any Pin Relative to Ground -0.5V to +7.0VStorage Temperature -55°C to +125°CSoldering Temperature

DS130211 of 15Trickle Charge ResistorsR1R2R3248kΩkΩkΩTrickle Charge Diode Voltage Drop VTD0.7 V*Unless otherwise specified.CAPACITANCE (TA = 25ºC)PA

DS130212 of 15TIMING DIAGRAM: READ DATA TRANSFER Figure 5TIMING DIAGRAM: WRITE DATA TRANSFER Figure 6NOTES:1. ICC1T and ICC2T are specified with I/O

DS130213 of 15DS1302 SERIAL TIMEKEEPER 8-PIN DIP (300-MIL)PKG 8-PINDIM MIN MAXA IN.MM0.3609.140.40010.16B IN.MM0.2406.100.2606.60C IN.MM0.1203.050.

DS130214 of 15DS1302S SERIAL TIMEKEEPER 8-PIN SOIC (150-MIL AND 200-MIL)PKG 8-PIN(150-MIL)8-PIN(200-MIL)DIM MIN MAX MIN MAXA IN.MM0.1884.780.1964.980

DS130215 of 15DS1302S SERIAL TIMEKEEPER 16-PIN SOICPKG 16-PINDIM MIN MAXAINMM0.39810.110.41210.46BINMM0.2907.370.3007.62CINMM0.0892.260.0952.41EINMM0.

DS13022 of 15Interfacing the DS1302 with a microprocessor is simplified by using synchronous serial communication.Only three wires are required to com

DS13023 of 15OPERATIONThe main elements of the serial timekeeper (i.e., shift register, control logic, oscillator, RTC, and RAM)are shown in Figure 1.

DS13024 of 15with Dallas Real-Time Clocks.” The DS1302 can also be driven by an external 32.768kHz oscillator. Inthis configuration, the X1 pin is co

DS13025 of 15DATA INPUTFollowing the eight SCLK cycles that input a write command byte, a data byte is input on the rising edgeof the next eight SCLK

DS13026 of 15DS1302 powers up with the trickle charger disabled. The diode select (DS) bits (bits 2–3) select whetherone diode or two diodes are conn

DS13027 of 15DATA TRANSFER SUMMARY Figure 3SINGLE BYTE READSINGLE BYTE WRITEIn burst mode, RST is kept high and additional SCLK cycles are sent until

DS13028 of 15REGISTER ADDRESS/DEFINITION Figure 4

DS13029 of 15DS1302 PROGRAMMABLE TRICKLE CHARGER Figure 5