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LC72349W Datasheet(PDF) 5 Page - Sanyo Semicon Device |
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LC72349W Datasheet(HTML) 5 Page - Sanyo Semicon Device |
5 / 14 page Note: * C(1), C(2), and C(3) must be connected even if an LCD is not used. No. 6472-5/14 LC72348G/W, 72349G/W DBR1 DBR2 DBR3 0.1 to 1 µF 0.1 to 1 µF 0.1 to 1 µF C(C1) C(C2) DBR4 C(C3) Notes: *1. The capacitors C(1), C(2), and C(3) must be connected to the DBR pins. *2. VSENSE When the VDD voltage drops, the VSENSE flag is set when that voltage is 1.75 V (typical). Applications can check the VSENSE flag using the TST instruction. Battery or other power source depletion can be easily measured by monitoring this flag. Note that the voltage for VSENSE detection differs for the falling and rising directions. Thus, after the VSENSE flag has been set due to a voltage drop, it will not be reset if the voltage rises by under 0.1 V. VDD t 1.9 V 1.6 V → SET RESET ← VDD t 2.1 V 1.7 V →RESET SET ← AA 7 pF 7 pF FMIN XIN AMIN TEST1, 2 XOUT VDD DBR2 DBR1 DBR1 0.1 µF 0.1 µF 0.1 µF 0.1 µF 0.1 µF 0.1 µF DBR3 DBR4 RES RES VSS PA, PF AGND AIN FMIN XIN AMIN TEST1, 2 XOUT VDD VSS AGND AIN 7pF 75 kHz 75 kHz 7pF DBR2 DBR3 DBR4 VSENSE (1) For a falling voltage *3. Halt mode current measurement circuit *4. Backup mode current measurement circuit With all ports other than those specified above left open. With output mode selected for PC and PD. With segments S13 to S20 selected. With all ports other than those specified above left open. With output mode selected for PC and PD. With segments S13 to S20 selected. VSENSE (2) For a rising voltage |
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