
S1D15G10D08B000
12
EPSON
Rev. 1.0
8. FUNCTIONAL DESCRIPTION
8.1 MPU Interfaces
8.1.1 Selecting an MPU Interface Type
S1D15G10 transfers data via the 8/16-bit bi-directional data bus or serial data input.
You can select a desired interface face through the combinations of settings of IF1, IF2 and IF2 as shown in Table 8.1.1.
8.1.2 8- or 16-bit Parallel Interface
S1D15G10 identifies type of the data bus signals according to combinations of A0, RD (E) and WR (R/W) signals as
shown in Table 8.1.2.
Except when the CS=LOW is taking place, D15 to D0 on S1D15G10 are caused to high impedance, disabling input of
A0, RD (E) and WR (R/W).
Relation between Data Bus and Gradation Data
S1D15G10 offers the 256-color display (8 gray-scale) out of 4096 colors as well as the 4096-color display (16 gray-
scale). When using 256-color display out of 4096 colors, you can specify color for each of R, G and B using the palette
function.
When using 4096 colors for display, you can select the type A or type B display mode depending on the data bus and
RGB you use. Use the data control command for switcing between these modes.
(1) 256-color display out of 4096 colors
Using RGBSET8 command enables you to set color for each of R, G and B by turning on the palette function
prepared to convert 3- or 2-bit data to 4-bit data.
1
8-bit mode
D7, D6, D5, D4, D3, D2, D1, D0: RRRGGGBB (8 bits) data is converted to RRRRGGGGBBBB (12 bits) and then
stored on the display RAM.
2
16-bit mode
D15, D14, D13, D12, D11, D10, D9, D8: RRRGGGBB (8 bits)
D7, D6, D5, D4, D3, D2, D1, D0: RRRGGGBB (8 bits)
Data of two pixels is respectively converted to RRRRGGGGBBBB (12 bits) data and then simultaneously written
to two addresses on the display RAM.
Table 8.1.2
68 series
R/W
0
1
1
0
80 series
RD
1
0
0
1
A0
1
1
0
0
E
1
1
1
1
WR
0
1
1
0
Function
Parameters or display data write.
Display data read.
Status read.
Control data write (command).
Table 8.1.1
IF1
IF2
IF3
Interface type
CS
A0
RD
E
RD
RD
E
E
––
––
WR
R/W
WR
WR
R/W
R/W
––
––
––
: Must be fixed to either HIGH or LOW.
D15 to D8
D7 to D0
SI SCL
HIGH HIGH HIGH
HIGH HIGH LOW
HIGH LOW LOW
LOW HIGH HIGH
LOW LOW HIGH
LOW LOW LOW
80 series 16-bit parallel
80 series 8-bit parallel
68 series 16-bit parallel
68 series 8-bit parallel
9-bit serial
8-bit serial
CS
CS
CS
CS
CS
CS
A0
A0
A0
A0
––
A0
D15 to D8
––
D15 to D8
––
––
––
D7 to D0
D7 to D0
D7 to D0
D7 to D0
––
––
––
––
––
––
SI SCL
SI SCL
––
––
––
––