PCF8531 Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
PCF8531 Datasheet PDF : 44 Pages
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Philips Semiconductors
34 × 128 pixel matrix driver
Product speciï¬cation
PCF8531
Table 5 Instruction set
INSTRUCTION
I2C-BUS
COMMAND(1)
I2C-BUS COMMAND BYTE
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
DESCRIPTION
H1 and H0 = don’t care (H independent command page)
NOP
0
0
0 0 0 0 0 0 0 0 no operation
Write data
Set default H[1:0]
1
0 D7 D6 D5 D4 D3 D2 D1 D0 write data to display RAM
0
0
0 0 0 0 0 0 0 1 select H[1:0] = 0
H1 = 0 and H0 = 0 (function and RAM command page)
Instruction set
0
0
0 0 0 0 1 0 H1 H0 select command page
Function set
0
0
0 0 1 0 0 PD V 0 power-down control;
entry mode
Set Y address of
RAM
0
0
0
1
0
0
0 Y2 Y1 Y0 set Y address of RAM;
0≤Y≤5
Set X address of
RAM
0
0
1 X6 X5 X4 X3 X2 X1 X0 set X address part of
RAM; 0 ≤ X ≤ 127
H1 = 0 and H0 = 1 (display setting command page)
Multiplex rate
0
0
0 0 0 0 0 1 M1 M0 select multiplex rate
Display control
0
0
0 0 0 0 1 D IM E set display conï¬guration
Bias system
0
0
0
0
0
1
0 BS2 BS1 BS0 set Bias System (BSx)
H1 = 1 and H0 = 0 (HV-gen command page)
HV-gen control
0
0
0
0
0
0
0
1 PRS HVE set VLCD programming
range
HV-gen
conï¬guration
0
0
0 0 0 0 1 0 S1 S0 set voltage multiplication
factor
Temperature control 0
0
0
0
1
0
0 TC2 TC1 TC0 set temperature
coefï¬cient
Test modes
0
0
0 1 X X X X X X do not use (reserved for
test)
VLCD control
0
0
1 VOP6 VOP5 VOP4 VOP3 VOP2 VOP1 VOP0 set VLCD register
0 ≤ VOP ≤ 127
Note
1. R/W is set in the slave address byte; Co and RS are set in the control byte.
2000 Feb 11
16
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