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PCF8537 데이터시트(PDF) 49 Page - NXP Semiconductors

부품명 PCF8537
상세설명  Industrial LCD driver for multiplex rates up to 1:8
PDF  82 Pages
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제조업체  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8537 데이터시트(HTML) 49 Page - NXP Semiconductors

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PCF8537
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 1 — 31 May 2012
49 of 82
NXP Semiconductors
PCF8537
Industrial LCD driver for multiplex rates up to 1:8
When data transfer is initiated, then the MSB of the first byte will always be placed in
row 0. Data must be transferred contiguously to achieve RAM filling as described in
Figure 37.
8.8.6 RAM filling in 1:8 multiplex drive mode
In the 1:8 multiplex drive mode the eight transmitted data bits are placed into eight rows of
one display RAM column (see Figure 38). In order to fill the whole RAM addresses
44 bytes need to be sent to the PCF8537.
Fig 37. Display RAM filling order in 1:6 multiplex drive mode
0
1
2
3
4
5
6
7
4142434445
a0
a1
a2
a3
a4
a5
a6
a7
0
MSB
LSB
1
2
3
4
5
transmitted data bytes
a7
a6
a5
a4
a3
a2
a1
a0
b0
b1
b2
b3
b4
b5
b6
c0
c1
c2
c3
c4
c5
c6
b7
c7
b7
b6
b5
b4
b3
b2
b1
b0
c7
c6
c5
c4
c3
c2
c1
c0
display RAM columns/segment outputs (S)
columns
display RAM rows/
backplane outputs
(BP)
rows
013aaa650
data pointer
incrementation
h7
h6
h5
h4
h3
h2
h1
h0
discarded
Fig 38. Display RAM filling order in 1:8 multiplex drive mode
0
1
2
3
4
5
6
7
39 40 41 42 43
b0
b1
b2
b3
b4
b5
b6
b7
0
MSB
LSB
1
2
3
4
5
6
7
transmitted data byte
b7
b6
b5
b4
b3
b2
b1
b0
display RAM columns/segment outputs (S)
columns
display RAM rows/
backplane outputs
(BP)
rows
013aaa651



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