PCA8538UG(2014) 查看數據表（PDF） - NXP Semiconductors.
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PCA8538UG Datasheet PDF : 107 Pages
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NXP Semiconductors
PCA8538
Automotive 102 x 9 Chip-On-Glass LCD segment driver
8.7.2 Bank select commands
For multiplex drive modes 1:4, 1:2, and static drive mode, it is possible to write data to one
area of the RAM while displaying from another. These areas are named as RAM banks.
Input and output banks can be set independently from one another with the
Input-bank-select and the Output-bank-select command. More information about RAM
bank switching can be found in Section 8.14.3 on page 59.
8.7.2.1 Command: Input-bank-select
Table 26. Input-bank-select - input bank select command bit description
This command is not applicable for multiplex drive mode 1:6, 1:8, and 1:9.
Bit
Symbol Value Description
-
R/W
0
fixed value
-
RS[1:0] 00
fixed value
7 to 3 -
00001 fixed value
2 to 0 IB[2:0]
selects RAM bank to write to
static drive mode 1:2 drive mode
1:4 drive mode
000[1]
001
bank 0: RAM-row 0 bank 0: RAM-rows 0 bank 0: RAM-rows 0,
bank 1: RAM-row 1 and 1
1, 2, and 3
010
bank 2: RAM-row 2 bank 2: RAM-rows 2
011
bank 3: RAM-row 3 and 3
100
bank 4: RAM-row 4 bank 4: RAM-rows 4 bank 4: RAM-rows 4,
101
bank 5: RAM-row 5 and 5
5, 6, and 7
110
bank 6: RAM-row 6 bank 6: RAM-rows 6
111
bank 7: RAM-row 7 and 7
[1] Default value.
8.7.2.2 Command: Output-bank-select
Table 27. Output-bank-select - output bank select command bit description
This command is not applicable for multiplex drive mode 1:6, 1:8, and 1:9.
Bit
Symbol Value Description
-
R/W
0
fixed value
-
RS[1:0] 00
fixed value
7 to 3 -
00010 fixed value
2 to 0 OB[2:0]
selects RAM bank to read from to the LCD
static drive mode 1:2 drive mode
1:4 drive mode
000[1]
001
bank 0: RAM-row 0 bank 0: RAM-rows 0 bank 0: RAM-rows 0,
bank 1: RAM-row 1 and 1
1, 2, and 3
010
bank 2: RAM-row 2 bank 2: RAM-rows 2
011
bank 3: RAM-row 3 and 3
100
bank 4: RAM-row 4 bank 4: RAM-rows 4 bank 4: RAM-rows 4,
101
bank 5: RAM-row 5 and 5
5, 6, and 7
110
bank 6: RAM-row 6 bank 6: RAM-rows 6
111
bank 7: RAM-row 7 and 7
[1] Default value.
PCA8538
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 26 September 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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