pca8576c NXP Semiconductors, pca8576c Datasheet - Page 25

• Manufacturer Part Number: pca8576c
• Description: Universal Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA8576C
Product data sheet
7.18.3 Device-select command
7.18.4 Bank-select command
7.18.5 Blink-select command
7.19 Display controller
Table 11.
Table 12.
[1]
Table 13.
[1]
[2]
The display controller executes the commands identified by the command decoder. It
contains the status registers of the PCA8576C and coordinates their effects. The
controller is also responsible for loading display data into the display RAM as required by
the filling order.
Bit
7
6 to 4
3 to 0
Bit
7
6 to 2
1
0
Bit
7
6 to 3
2
1 to 0
The bank-select command has no effect in 1:3 and 1:4 multiplex drive modes.
Normal blinking is assumed when the LCD multiplex drive modes 1:3 or 1:4 are selected.
Alternate RAM bank blinking does not apply in 1:3 and 1:4 multiplex drive modes.
Symbol
C
-
A[2:0]
Symbol
C
-
I
O
Symbol
C
-
AB
BF[1:0]
Device-select command bit description
Bank-select command bit description
Blink-select command bit description
All information provided in this document is subject to legal disclaimers.
0, 1
000 to 111
0, 1
Value
1100
Value
0, 1
11110
0
1
0
1
Value
1110
0
1
00
01
10
11
Rev. 1 — 22 July 2010
Description
see
fixed value
3 bit binary value, 0 to 7; transferred to the subaddress
counter to define one of eight hardware subaddresses
Description
see
fixed value
blink mode selection
blink frequency selection
Description
Static
see
fixed value
input bank selection; storage of arriving display data
output bank selection; retrieval of LCD display data
normal blinking
alternate RAM bank blinking
off
1
2
3
RAM bit 0
RAM bit 2
RAM bit 0
RAM bit 2
Figure 17
Figure 17
Figure 17
Universal LCD driver for low multiplex rates
[1]
[2]
1:2 multiplex
RAM bits 0 and 1
RAM bits 2 and 3
RAM bits 0 and 1
RAM bits 2 and 3
PCA8576C
© NXP B.V. 2010. All rights reserved.
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