SED1565 Datasheet, PDF (54/87 Pages) Epson Company – Direct display of RAM data through the display data RAM

SED1565 Series
Common Output Mode Select
This command can select the scan direction of the COM output terminal. For details, see the function explanation in
“Common Output Mode Select Circuit.”
E R/W
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
Selected Mode
SED1565*** SED1566*** SED1567*** SED1568*** SED1569***
0 1 0 1 1 0 0 0 * * * Normal COM0→COM63 COM0→COM47 COM0→COM31 COM0→COM53 COM0→COM51
1
Reverse COM63→COM0 COM47→COM0 COM31→COM0 COM53→COM0 COM51→COM0
* Disabled bit
Power Controller Set
This command sets the power supply circuit functions. See the function explanation in “The Power Supply Circuit,”
for details
E R/W
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
Selected Mode
0 1 0 001010
1
Booster circuit: OFF
Booster circuit: ON
0
Voltage regulator circuit: OFF
1
Voltage regulator circuit: ON
0 Voltage follower circuit: OFF
1 Voltage follower circuit: ON
[Translator’s Note: the abbreviations explained within these parentheses for V
and V/F have been written out in the English translation and are therefore no
longer necessary.]
V5 Voltage Regulator Internal Resistor Ratio Set
This command sets the V5 voltage regulator internal resistor ratio. For details, see the function explanation is “The
Power Supply Circuits.”
E R/W
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
0 1 0 00100000
001
010
↓
110
111
Rb/Ra Ratio
Small
↓
Large
The Electronic Volume (Double Byte Command)
This command makes it possible to adjust the brightness of the liquid crystal display by controlling the liquid crystal
drive voltage V5 through the output from the voltage regulator circuits of the internal liquid crystal power supply.
This command is a two byte command used as a pair with the electronic volume mode set command and the electronic
volume register set command, and both commands must be issued one after the other.
• The Electronic Volume Mode Set
When this command is input, the electronic volume register set command becomes enabled. Once the electronic volume
mode has been set, no other command except for the electronic volume register command can be used. Once the
electronic volume register set command has been used to set data into the register, then the electronic volume mode is
released.
E R/W
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
0 1 0 10000001
8–52
EPSON