pcf8531 NXP Semiconductors, pcf8531 Datasheet - Page 16

• Manufacturer Part Number: pcf8531
• Description: 34 X 128 Pixel Matrix Driver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 5 Instruction set
Note
1. R/W is set in the slave address byte; Co and RS are set in the control byte.
2000 Feb 11
H
NOP
Write data
Set default H[1:0]
H
Instruction set
Function set
Set Y address of
RAM
Set X address of
RAM
H
Multiplex rate
Display control
Bias system
H
HV-gen control
HV-gen
configuration
Temperature control
Test modes
V
LCD
1
1
1
1
34
INSTRUCTION
and H
= 0 and H
= 0 and H
= 1 and H
control
128 pixel matrix driver
0
= don’t care (H independent command page)
0
0
0
= 0 (function and RAM command page)
= 1 (display setting command page)
= 0 (HV-gen command page)
COMMAND
RS
I
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
2
C-BUS
R/W
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
(1)
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
D
0
0
0
0
0
1
0
0
0
0
0
0
0
1
7
V
D
X
OP6
0
0
0
0
1
0
0
0
0
0
0
1
6
6
I
2
V
C-BUS COMMAND BYTE
D
X
OP5
X
0
0
0
1
0
0
0
0
0
0
1
5
5
16
V
D
X
OP4
X
0
0
0
0
0
0
0
1
0
0
0
4
4
V
D
X
OP3
X
0
0
1
0
0
0
1
0
0
1
0
3
3
V
BS
TC
PD
D
Y
X
OP2
D
X
0
0
0
1
1
0
2
2
2
2
2
V
PRS HVE set V
BS
TC
M1
H1
S1
D
Y
X
IM
OP1
V
X
0
0
1
1
1
1
1
V
BS
TC
M0
H0
S0
D
Y
X
OP0
E
X
0
1
0
0
0
0
0
0
no operation
write data to display RAM
select H[1:0] = 0
select command page
power-down control;
entry mode
set Y address of RAM;
0
set X address part of
RAM; 0
select multiplex rate
set display configuration
set Bias System (BSx)
range
set voltage multiplication
factor
set temperature
coefficient
do not use (reserved for
test)
set V
0
V
Y
DESCRIPTION
LCD
LCD
OP
Product specification
5
programming
register
PCF8531
X
127
127