pcf85176 NXP Semiconductors, pcf85176 Datasheet - Page 23

• Manufacturer Part Number: pcf85176
• Description: Universal Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF85176_1
Product data sheet
7.17 Command decoder
The command decoder identifies command bytes that arrive on the I
The commands available to the PCF85176 are defined in
Table 8.
Bit position labelled as - is not used.
All available commands carry a continuation bit C in their most significant bit position as
shown in
transfer to arrive will also represent a command. If this bit is set logic 0, it indicates that
the command byte is the last in the transfer. Further bytes will be regarded as display data
(see
Table 9.
Table 10.
[1]
Command
Bit
mode-set
load-data-pointer
device-select
bank-select
blink-select
Bit
7
Bit
7
6 to 5
4
3
2
1 to 0
The possibility to disable the display allows implementation of blinking under external control.
Table
Figure
Symbol
C
Symbol
C
-
-
E
B
M[1:0]
Definition of PCF85176 commands
C bit description
Mode-set command bit description
9).
All information provided in this document is subject to legal disclaimers.
17. When this bit is set logic 1, it indicates that the next byte of the
0, 1
Value
0
1
Value
10
-
0
1
0
1
01
10
11
00
Operation Code
7
C
C
C
C
C
Rev. 01 — 14 April 2010
6
1
0
1
1
1
Description
see
fixed value
unused
display status
LCD bias configuration
LCD drive mode selection
Description
continue bit
disabled
enabled
1
1
static; BP0
1:2 multiplex; BP0, BP1
1:3 multiplex; BP0, BP1, BP2
1:4 multiplex; BP0, BP1, BP2, BP3
5
0
P[5:0]
1
1
1
⁄
⁄
last control byte in the transfer; next byte will be regarded
as display data
control bytes continue; next byte will be a command too
3
2
Table 9
bias
bias
Universal LCD driver for low multiplex rates
4
-
0
1
1
[1]
3
E
0
1
0
2
B
A[2:0]
0
A
Table
1
M[1:0]
I
BF[1:0]
8.
PCF85176
2
0
O
C-bus.
© NXP B.V. 2010. All rights reserved.
Reference
Table 10
Table 11
Table 12
Table 13
Table 14
23 of 43