pcf8534a NXP Semiconductors, pcf8534a Datasheet - Page 22

• Manufacturer Part Number: pcf8534a
• Description: Universal Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF8534A_3
Product data sheet
Fig 17. I
EXAMPLES
a) transmit two bytes of RAM data
b) transmit two command bytes
c) transmit one command byte and two RAM date bytes
S 0 1 1 1 0
S 0 1 1 1 0
S 0 1 1 1 0
S 0 1 1 1 0
2
slave address
C-bus protocol
8.3 Command decoder
0
0
0
0
R/W = 0
S
A
0
S
A
0
S
A
0
S
A
0
0
0
0
0
The command decoder identifies command bytes that arrive on the I
five commands:
Table 9.
Table 10.
Command
Mode set
Load data pointer
Device select
Bank select
Blink select
Bit
7 to 4
3
2
A
A
A
A
C
O
0 1
1 0
1 0
R
S
control byte
Symbol
-
E
B
Definition of commands
Mode set command bit description
A
A
A
A
M
S
B
RAM/command byte
Value
1100
0
1
0
1
Rev. 03 — 10 November 2008
RAM DATA
COMMAND
COMMAND
Opcode
1
0
1
1
1
S
B
L
1
1
1
1
P6
A
A
A
P
Description
fixed value
display status
the possibility to disable the display allows implementation of
blinking under external control
LCD bias configuration
0 0
0 1
disabled (blank)
enable
1
1
3
2
RAM DATA
0
P5
1
1
1
bias
bias
Universal LCD driver for low multiplex rates
0
P4
0
1
1
A
A
A
P
E
P3
0
1
0
COMMAND
RAM DATA
B
P2
A2
0
A
A
A
M1
P1
A1
I
BF1
P
PCF8534A
2
RAM DATA
C-bus. There are
© NXP B.V. 2008. All rights reserved.
M0
P0
A0
O
BF0
Reference
Table 10
Table 11
Table 12
Table 13
Table 14
mgl752
A
P
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