HM17CM4096 ETC2 [List of Unclassifed Manufacturers], HM17CM4096 Datasheet - Page 15

• Manufacturer Part Number: HM17CM4096
• Description: 128XRGBX162 OUTPUT LCD DRIVER IC with built-in RAM
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

(1) CPU interface
(1-1) Selection of interface type
(1-2) Parallel input
(1-3) Data identification
(1-4) Serial interface
FUNCTION DESCRIPTION
divided into serial data input (SDA, SCL). Parallel or serial selection is decided by P/S pin setting.
Reading out from internal register or RAM is not possible at serial interface mode.
8bit/16bit MPU through data bus. SEL68 port setting makes 80-series or 68-series interface
selection
HM17CM4096 receives data through 8 bit parallel I/O(D
P/S
Parallel or serial selection is possible as following table.
SEL68
In the parallel interface mode selected by P/S port, parallel data is transferred from the
TABLE
TABLE
TABLE
TABEL
H
L
caution 1) “-” mark item : Fix to ”H” or ”L”
Combinations of RS, RD, and WR signals identify contents of 8bit data bus.
SMODE pin.
SMODE
RS
H
2 types of serial interface (3 line type mode, 4 line type mode) are available by selecting
L
1
1
0
0
H
L
Parallel input
Serial input
68 series CPU
80 series CPU
Type
68 series
CPU type
R/W
1
0
1
0
Serial interface mode
CS
CS
CS
3 line type
4 line type
RD
0
1
0
1
80 series
CS
CS
CS
RS
RS
RS
WR
1
0
1
0
RS
RS
RS
RD
RD
-
Read out from internal register
Write in to internal register
Read display data
Write display data
RD
RD
E
WR
WR
-
R/W
WR
WR
SEL68
SEL68
FUNCTION
0
~D
-
7
) 16 bit parallel I/O(D
D
D
0
0
~D
~D
SDA
SDA
7
7
data
(D
(D
0
0
~D
~D
HM17CM4096
SCL
SCL
15
15
)
)
D
0
~D
0
~D
data
7
15
(D
-
) or
0
~D
- 15 -
15
)