Option B Power Supply Circuit Configuration - Oki ML63611 User Manual

15.3.3 OPTION B Power Supply Circuit Configuration

The power supply section of the OPTION B consists of the voltage regulator circuit (V/R1) for internal logic
power supply, the voltage regulator circuit (V/R2) for the power supply of the low-speed clock generator circuit,
and the voltage regulator circuit (V/R3) for the LCD bias generation reference voltage.
The OPTION B power supply circuit configuration is shown in Figure 15-2.
0.95 V
1.15 V
ENOSC (bit 1 of FCON) = "1"
Figure 15-2 OPTION B Power Supply Circuit Configuration
OPTION A (C): 1.5 V (3.0 V), Without regulator
circuit for LCD bias
Fixed in the hardware
V
V/R3
DD1
0.95 V min.
1.19 V max.
V
V/R2
XT
0.7 V
V/R1
ENOSC (bit 1 of FCON) = "0"
V
CH
Internal logic circuits (ROM, RAM, CPU, etc.)
Chapter 15 Power Supply Circuit (POWER)
V
HF
Halver circuit
1/2V
DD
LCD bias circuit
Low-speed clock
generator circuit
High-speed clock generator circuit
ML63611
15 – 5
OPTION B (D): 1.5 V (3.0 V), With regulator
ML63611 User's Manual
V
1.5 V
DD
1.3 to 1.7 V C
0.1 µF
V
V
HF
Open
HC2
Open
HC1
Open
V 1.0 µF
C
DD3
3
1.0 µF
V C
DD2 2
1.0 µF
V C
DD1 1
C2
1.0 µF
C
C1
12
XT0 C
G
5 to 25 pF
XT1
32.768 kHz
0.1 µF
V C
XT XT
0.1 µF
C
V
CH
CH
30 pF
C
OSC0
L0
C
OSC1
L1
V
Ceramic resonator
SS
circuit for LCD bias