Datasheet-2

a-Si TFT LCD Single Chip Driver
132RGBx162 Resolution and 262K color
ILI9163C
Page 25 of 200 Version:0.09
6.3 8080-Series Parallel Interface (P68=’0’)
The MCU uses a 11-wires 8-data parallel interface or 12-wires 9-data parallel interface or 19-wires 16-data
parallel interface or 21-wires 18-data parallel interface. The chip-select CSX (active low) enables and disables
the parallel interface. RESX (active low) is an external reset signal. WRX is the parallel data write, RDX is the
parallel data read and D[17:0] is parallel data.
The graphics controller chip reads the data at the rising edge of WRX signal. The D/CX is the data/command
flag. When D/CX=’1’, D[17,0] bits are display RAM data or command parameters. When D/C=’0’, D[17,0] bits are
commands.
The 8080-series bi-direction interface can be used for communication between the micro controller and LCD
driver chip. The selection of this interface is done when P68 pin is low state (GND). Interface bus width can be
selected with IM2, IM1 and IM0. The interface function of 8080-series parallel interface are given in Table 6.3.1.
Table 6.3.1The function of 8080-series parallel interface
P68 IM2 IM1 IM0 Interface D/CX RDX WRX Function
0 1  Write 8-bit command(D7 to D0)
1 1 
Write 8-bit display data or 8-bit parameter(D7 to
D0)
1  1 Read 8-bit display data(D7 to D0)
0 1 0 0 8-bit Parallel
1  1 Read 8-bit parameter or status(D7 to D0)
0 1  Write 8-bit command(D7 to D0)
1 1 
Write 16-bit display data or 8-bit parameter(D15
to D0)
1  1 Read 16-bit display data(D15 to D0)
0 1 0 1
16-bit
Parallel
1  1 Read 8-bit parameter or status(D7 to D0)
0 1  Write 8-bit command(D7 to D0)
1 1 
Write 9-bit display data or 8-bit parameter(D8 to
D0)
1  1 Read 9-bit display data (D8 to D0)
0 1 1 0 9-bit Parallel
1  1 Read 8-bit parameter or status(D7 to D0)
0 1  Write 8-bit command(D7 to D0)
1 1 
Write 18-bit display data or 8-bit parameter(D17
to D0)
1  1 Read 18-bit display data(D17 to D0)
0 1 1 1
18-bit
Parallel
1  1 Read 8-bit parameter or status(D7 to D0)
Note: Reading operation applied for command code: DAh, DBh, DCh, 04h, 09h, 0Ah, 0Bh, 0Ch, 0Dh, 0Eh, 0Fh
6.3.1 Write Cycle/Sequence
The write cycle means that the host writes information (command or/and data) to the display via the interface.
Each write cycle (WRX high-low-high sequence) consists of 3 control (D/CX, RDX, WRX) and data signals
(D[17…0]). D/CX bit is a control signal, which tells if the data is a command or a data. The data signals are a
command if the control signal is low (= ‘0’) and vice versa it is data (= ‘1’). The write cycle is described in the
following figure.