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PCA2117DUGS/DA 데이터시트(PDF) 18 Page - NXP Semiconductors

부품명 PCA2117DUGS/DA
상세설명  Automotive LCD driver for character displays
PDF  107 Pages
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제조업체  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
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PCA2117DUGS/DA 데이터시트(HTML) 18 Page - NXP Semiconductors

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PCA2117
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet
Rev. 4 — 8 April 2015
18 of 107
NXP Semiconductors
PCA2117
Automotive LCD driver for character displays
8.1.2.4
Command: Function_set
The Function_set command allows setting the display lines and the multiplex drive mode.
[1]
Default value.
8.1.2.5
Command: Inversion_mode
The Inversion_mode command allows changing the drive scheme inversion mode.
The waveforms used to drive an LCD (see Figure 27 to Figure 29) inherently produce a
DC voltage across the display cell. The PCA2117 compensates for the DC voltage by
inverting the waveforms on alternate frames or alternate lines. The choice of the
compensation method is determined with INV[2:0] in Table 22.
[1]
Default value.
Line inversion mode (driving scheme A): In line inversion mode, the DC value is
compensated every nth line. Changing the inversion mode to line inversion mode reduces
the possibility for flickering but increases the power consumption.
Table 21.
Function_set - function set bit description
Bit
Symbol
Value
Description
-R/W
0
fixed value
-
RS[1:0]
10
fixed value
7 to 2
-
001100
fixed value
1M
display lines setting
0[1]
1 line
 40 characters
1
2 line
 20 characters
0SL
multiplex drive mode setting
0[1]
1:18 multiplex drive mode, 1
 40 character or
2
 20 character display
1
1:9 multiplex drive mode, 1
 20 character
display
Table 22.
Inversion_mode - inversion mode command bit description
Bit
Symbol
Value
Description
-R/W
0
fixed value
-
RS[1:0]
10
fixed value
7 to 3
-
01000
fixed value
2 to 0
INV[2:0]
inversion mode setting
000[1]
frame inversion mode
001
1-line inversion mode
010
2-line inversion mode
011
3-line inversion mode
100
4-line inversion mode
101
5-line inversion mode
110
6-line inversion mode
111
7-line inversion mode



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