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RS5C372A-E2-F Datasheet(PDF) 4 Page - RICOH electronics devices division |
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RS5C372A-E2-F Datasheet(HTML) 4 Page - RICOH electronics devices division |
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4 / 57 page  RS5C372A 4 PIN DESCRIPTIONS Pin No. Symbol Name Description 2 SCL Serial Clock Line This pin is used to input shift clock pulses to synchronize data input/output to and from the SDA pin with this clock. Up to 6V beyond VDD may be input. 3 SDA Serial Data Line This pin inputs and outputs written or read data in synchronization with shift clock pulses from the SCL pin. Up to 6V beyond VDD may be input. This pin functions as an Nch open drain output. 5 INTRA Interrupt Output A This pin outputs periodic interrupt pulses and alarm interrupt (Alarm_A, Alarm_B) to the CPU. This pin is off when power is activated from 0V. This pin functions as an Nch open drain output. 1 INTRB Interrupt Output B This pin outputs 32.768kHz clock pulses (when 32.768kHz crystal is used), periodic interrupt pulses to the CPU or alarm interrupt (Alarm_B). It outputs 32.768kHz when power source is activated from 0V. This pin functions as an Nch open drain output. 7 6 OSCIN OSCOUT Oscillator Circuit Input/Output These pins configure an oscillator circuit by connecting a 32.768kHz or 32.000kHz crystal oscillator between the OSCIN-OSCOUT pins. (Any other oscillator circuit components are built into the RS5C372A.) 8 4 VDD VSS Positive Power Supply Input Negative Power Supply Input The VDD pin is connected to the positive power supply and VSS to the ground. ABSOLUTE MAXIMUM RATINGS (Vss 0V) Symbol Item Conditions Ratinge Unit VDD Supply Voltage 0.3 to 7.0 V VI Input Voltag SCL, SDA 0.3 to 7.0 V VO1 Output Voltage 1 SDA 0.3 to 7.0 V VO2 Output Voltage 2 INTRA , INTRB 0.3 to 12 PD Power Dissipation Topt 25C 300 mW Topt Operating Temperature 40 to 85 C Tstg Storage Temperature 55 to 125 C ABSOLUTE MAXIMUM RATINGS Absolute Maximum ratings are threshold limit values that must not be exceeded even for an instant under any conditions. Moreover, such values for any two items must not be reached simultaneously. Operation above these absolute maximum ratings may cause degradation or permanent damage to the device. These are stress ratings only and do not necessarily imply functional operation below these limits. |
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