S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 241

• Manufacturer Part Number: S1D1
• Description: LCD Controller-driver With Built-in Character ROM
• Manufacturer: Epson Electronics America, Inc.

(19) LCD Power Supply ON/OFF
Turns the S1D1560
ON or OFF. When the power supply is ON, the voltage
converter, the voltage regulator circuit and the voltage
followers are operating. For the converter to function,
the oscillator must also be operating.
Note
D = 0 Supply OFF
D = 1 Supply ON
S1D15600/601/602 Series
When an external power supply is used with the
S1D15600D
If the S1D15600D
configu-ration, an external power supply that meets the
specifications of the LCD panel must be used. An
S1D15600 operating as a slave must have its internal
power supply turned OFF.
(20) Built-in Power Supply ON/OFF
This command turns on the built-in power supply.
The S1D15600 series has the built-in, low-power LCD
driving voltage generator circuit which can cut almost all
currents except those required for LCD display. This is
the primary advantage of the S1D15600 series product.
However, it has the LOW power and you need perform
the following power-on sequence when turning on the
built-in power supply:
7–46
A
A
A
0
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0
0
2
0
A
RD WR
RD WR
1
E
1
E
1
A
0
R/W
R/W
0
0
Output
**
Status
Case 6
Case 5
Case 4
Case 3
Case 2
Case 1
Case 6
Case 6
B
D
D
1
0
*
7
7
*
, the internal supply must be OFF.
**
D
SEG 166
SEG 134, COM 32
SEG 134, COM 32
SEG 134, COM 32
SEG 102, COM 64
SEG 102, COM 64
SEG 166
SEG 166
D
D
**
1
0
B
6
6
Output pins
*
B
Number of
COM/SEG
D
*
D
1
1
is used in a multiple-chip
5
5
internal LCD power supply
D
D
0
0
4
4
D
D
1
0
3
3
Applies to the
SED1560/61
Applies to the
SED1561
Applies to the
SED1560
Applies to the
SED1560/61
D
D
1
1
2
Remarks
2
D
D
0
0
1
1
D
D
1
D
0
0
EPSON
Sequence in the Built-in Power supply
ON/OFF Status
To turn on built-in power supply, execute the above built-
in power supply ON sequence. To turn off internal power
supply execute the power save sequence as shown in the
following power supply OFF status. Accordingly, to turn
on built-in power supply again after turn it off (power
save), execute the “Power Save Clear Sequence” that
will be described afterwards.
*1: Regarding the S1D15602, it is not necessary to
*2: When the COMI pin is not used, it is not necessary
*3: When the built-in power supply startup end com-
*4: The waiting time depends on the externally-in-
*1
*2
*4,5
*3
*2
Built-in power supply OFF status
Built-in power supply ON status
execute a command to decide an output status.
to enter the DUTY+1 and DUTY+1 Clear com-
mands.
mand is not executed, current is consumed
stationarily.
Built-in power supply startup end command must
always be used in a pair with built-in power supply
ON command.
stalled capacitance C2 (refer to 7-37). After the
waiting time shown in Graph 1, the power supply
can be started surely.
Power Supply Startup End
Electronic Volume Control
Internal Power Supply ON
Output Status case 6
Reset by RES signal
Output Status Select
*DUTY+1 Clear
Display All ON
(Waiting time)
Display OFF
*DUTY+1
command
command
setup
command
command
command
command
command
command
Rev. 4.6
A*(H)
AB(H)
**(H)
25(H)
ED(H)
AE(H)
CF(H)
AA(H)
A5(H)