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CHAPTER 2: POWER SUPPLY AND INITIAL RESET
2 P
CHAPTER
2.1 Power Supply
The S1C63358 operating power voltage is as follows:
0.9 V to 3.6 V
Note: • When a voltage within 0.9 V to 1.4 V is used as the operating power voltage, software control is
necessary (see Section 4.2).
• When using the A/D converter with 0.9 V to 1.6 V power supply voltage, software control is
necessary.
The S1C63358 operates by applying a single power supply within the above range between V
and V
/AV
. The S1C63358 itself generates the voltage necessary for all the internal circuits by the
SS
SS
built-in power supply circuits shown in Table 2.1.1.
Oscillation and internal circuits
LCD driver
Oscillation system voltage regulator
A/D converter
Note: • Do not drive external loads with the output voltage from the internal power supply circuits.
• See Chapter 7, "Electrical Characteristics", for voltage values and drive capability.
C
2
External
+
power
supply
C
3
C
4
C
5
C
8
S
OWER
Table 2.1.1 Power supply circuits
Circuit
Oscillation system voltage regulator
LCD system voltage circuit
Supply voltage (V
LCD system voltage circuit (V
Analog supply voltage (AV
supply voltage (V
LCD system voltage circuit (V
AV
DD
V
DD
V
C2
V
Oscillation system
D1
voltage regulator
V
C1
V
C2
LCD system
V
C3
voltage circuit
CA
1
CB
V
SS
AV
SS
Fig. 2.1.1 Configuration of power supply
UPPLY AND
Power supply circuit
) or
DD
C2
) and
DD
) or
DD
C2
V
V
V
DD
C2
DD
V
–V
C1
EPSON
I
R
NITIAL
ESET
Output voltage
V
D1
V
–V
C1
C3
V
or V
DD
C2
)
AV
and
DD
V
or V
DD
C2
)
A/D
converter
Internal
circuits
V
D1
Oscillation
circuit
SVD circuit
C3
LCD driver
S1C63358 TECHNICAL MANUAL
/AV
DD
DD
OSC1–4
COM0–3
SEG0–31
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