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LC72349W Datasheet(PDF) 5 Page - Sanyo Semicon Device

Part # LC72349W
Description  Low-Voltage ETR Controller with On-Chip LCD Driver
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LC72349W Datasheet(HTML) 5 Page - Sanyo Semicon Device

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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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