S1D15E06 Series
(25) Power Control Set
This command sets the built-in power supply circuit function. For details, see the description of “6.7 Power supply
circuit” in the Function Description.
E
RD
R/W
WR
A0
0
D7
0
D6
0
D5
1
D4
0
D3
0
D2
1
D1
0
D0
1
Selected state
Command
1
1
0
0
1
0
0
0
P4
P3
P2
P1
P0
Register set
P4
1
P3
1
P2
P1
P0
Selected state
Triple step-up
Double step-up
VOUT = VDD
1
0
0
1
0
1
Step-up: OFF
Step-up: ON
VC: OFF
0
1
VC: ON
0
1
LCD voltage: OFF
LCD voltage: ON
S1D15E06D00B : (LCD voltage: V2, V1, MV1)
*
S1D15E06D00B : (LCD voltage: V3, V2, V1, MV1, MV2)
*
An internal clock is required to operate the built-in power supply circuit. During the operation of the built-in power
supply circuit, be sure that the internal clock is present inside.
If the built-in oscillator circuit is used, execute the built-in oscillator circuit ON command before the power control
set command. If an external oscillator circuit is used, operate the external oscillator circuit before the power control
set command.
If the internal clock is cut off during the operation of the built-in power supply circuit, display failure may occur. To
avoid this, do not cut it off.
In the slave operation mode, only the parameters (D7 to D0 : ***00000) can be used with the power control set
command. Do not use any other parameter.
100ms or more should be kept from VC regulator circuit ON to LCDV circuit ON.
Built-in oscillator ON
External oscillator input
Power Control Set
1. Step-up circuit ON
2. V regulator circuit ON
3. LCDV circuit ON*
C
A built-in oscillator used
An external oscillator used
Fig. 7.4
Rev. 2.1
EPSON
39
EPSON [ EPSON COMPANY ]
