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PCF8533U/2DA/2 Scheda tecnica(PDF) 23 Page - NXP Semiconductors

Il numero della parte PCF8533U/2DA/2
Spiegazioni elettronici  Universal LCD driver for low multiplex rates
PDF  45 Pages
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Produttore elettronici  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8533U/2DA/2 Scheda tecnica(HTML) 23 Page - NXP Semiconductors

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PCF8533_4
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 04 — 5 March 2010
23 of 45
NXP Semiconductors
PCF8533
Universal LCD driver for low multiplex rates
[1]
The bank-select command has no effect in 1:3 or 1:4 multiplex drive modes.
[1]
Only normal blinking can be selected in multiplexer 1:3 or 1:4 drive modes.
[2]
For the blink frequency see Table 7
8.3 Display controller
The display controller executes the commands identified by the command decoder. It
contains the device’s status registers and co-ordinates their effects. The display controller
is also responsible for loading display data into the display RAM as required by the filling
order.
Table 12.
Device-select command bit description
See Section 7.12.
Bit
Symbol
Value
Description
7 to 3
-
11100
fixed value
2 to 0
A[2:0]
000 to 111
immediate data
3-bit binary value of 0 to 7, transferred to the subaddress
counter to define one of 8 hardware subaddresses
Table 13.
Bank-select command bit description[1]
See Section 7.10, Section 7.11, Section 7.13, Section 7.14 and Section 7.12.
Bit
Symbol
Value
Description
Static
1:2 multiplex
7 to 2
-
111110
fixed value
1I
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
0O
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
Table 14.
Blink-select command bit description
See Section 7.15.
Bit
Symbol
Value
Description
7 to 3
-
11110
fixed value
2A
blink mode selection[1]
0
normal blinking
1
blinking by alternating display RAM banks
1 to 0
BF[1:0]
blink mode selection[2]
00
off
01
1
10
2
11
3



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