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PCF8534AHL/1 датащи(PDF) 26 Page - NXP Semiconductors

номер детали PCF8534AHL/1
подробное описание детали  Universal LCD driver for low multiplex rates
PDF  47 Pages
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производитель  NXP [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8534AHL/1 датащи(HTML) 26 Page - NXP Semiconductors

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PCF8534A_5
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 6 August 2009
26 of 47
NXP Semiconductors
PCF8534A
Universal LCD driver for low multiplex rates
8.3 Command decoder
The command decoder identifies command bytes that arrive on the I2C-bus. There are
five commands:
Table 9.
Definition of commands
Command
Opcode
Reference
Mode set
1
100E
B
M1
M0
Table 10
Load data pointer
0
P6
P5
P4
P3
P2
P1
P0
Table 11
Device select
1
1100A2
A1
A0
Table 12
Bank select
1
11110I
O
Table 13
Blink select
1
1110A
BF1
BF0
Table 14
Table 10.
Mode set command bit description
Bit
Symbol
Value
Description
7 to 4
-
1100
fixed value
3E
display status
the possibility to disable the display allows implementation of
blinking under external control
0
disabled (blank)
1
enable
2B
LCD bias configuration
0
1
⁄3 bias
1
1
⁄2 bias
1 to 0
M[1:0]
LCD drive mode selection
01
static; 1 backplane
10
1:2 multiplex; 2 backplanes
11
1:3 multiplex; 3 backplanes
00
1:4 multiplex; 4 backplanes
Table 11.
Load data pointer command bit description
See Section 7.11.
Bit
Symbol
Value
Description
7
-
0
fixed value
6 to 0
P[6:0]
000 0000 to
011 1011
7-bit binary value of 0 to 59
Table 12.
Device select command bit description
See Section 7.12.
Bit
Symbol
Value
Description
7 to 3
-
1 1100
fixed value
2 to 0
A[2:0]
000 to 111
3-bit binary value of 0 to 7



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