PCA85133 Datasheet, PDF (24/44 Pages) NXP Semiconductors – Universal LCD driver for low multiplex rates

NXP Semiconductors
PCA85133
Universal LCD driver for low multiplex rates
Table 13. Bank-select command bit description^[1]
See Section 7.10, Section 7.11, Section 7.12, Section 7.13 and Section 7.14.
Bit
Symbol Value
Description
Static
1:2 multiplex
7 to 2 -
111110 fixed value
1
I
input bank selection: storage of arriving display data
0
RAM bit 0
RAM bits 0 and 1
1
RAM bit 2
RAM bits 2 and 3
0
O
output bank selection: retrieval of LCD display data
0
RAM bit 0
RAM bits 0 and 1
1
RAM bit 2
RAM bits 2 and 3
[1] The bank-select command has no effect in 1:3 or 1:4 multiplex drive modes.
Table 14. Blink-select command bit description
See Section 7.15.
Bit
Symbol Value
Description
7 to 3 -
1111 0
fixed value
2
A
blink mode selection^[1]
0
normal blinking
1
blinking by alternating display RAM banks
1 to 0 BF[1:0]
blink frequency selection^[2]
00
off
01
1
10
2
11
3
[1] Normal blinking can only be selected in multiplex drive mode 1:3 or 1:4.
[2] For the blink frequencies, see Table 7.
7.18 Display controller
The display controller executes the commands identified by the command decoder. It
contains the status registers and coordinates their effects. The display controller also
loads the display data into the display RAM as required by the storage order.
PCA85133_1
Product data sheet
Rev. 1 — 23 October 2009
© NXP B.V. 2009. All rights reserved.
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