NXP Semiconductors
PCF8576C
Universal LCD driver for low multiplex rates
Table 8. Definition of PCF8576C commands
Command
Operation Code
Bit
7
6
5
4
3
mode-set
C 1 0 LP E
load-data-pointer C 0 P[5:0]
device-select
C
1
1
0
0
bank-select
C
1
1
1
1
blink-select
C
1
1
1
0
2
1
0
B M[1:0]
A[2:0]
0I
O
AB BF[1:0]
Reference
Section 7.18.1
Section 7.18.2
Section 7.18.3
Section 7.18.4
Section 7.18.5
7.18.1 Mode-set command
Table 9.
Bit
7
6 to 5
4
3
2
1 to 0
Mode-set command bit description
Symbol Value
Description
C
0, 1
see Figure 20
-
10
fixed value
LP
power dissipation (see Table 6)
0
normal-power mode
1
power-saving mode
E
display status
0
disabled[1]
1
enabled
B
LCD bias configuration[2]
0
1
M[1:0]
1⁄3 bias
1⁄2 bias
LCD drive mode selection
01
static; BP0
10
1:2 multiplex; BP0, BP1
11
1:3 multiplex; BP0, BP1, BP2
00
1:4 multiplex; BP0, BP1, BP2, BP3
[1] The possibility to disable the display allows implementation of blinking under external control.
[2] Bit B is not applicable for the static LCD drive mode.
7.18.2 Load-data-pointer command
Table 10. Load-data-pointer command bit description
Bit
Symbol Value
Description
7
C
0, 1
see Figure 20
6
-
0
fixed value
5 to 0
P[5:0]
000000 to 6 bit binary value, 0 to 39; transferred to the data pointer to
10 0111
define one of forty display RAM addresses
PCF8576C
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 22 July 2010
© NXP B.V. 2010. All rights reserved.
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