Datasheet-2

a-Si TFT LCD Single Chip Driver
132RGBx162 Resolution and 262K color
ILI9163C
Page 60 of 200 Version:0.09
7.3 MCU to memory write/read direction (Address Counter)
The address counter set the addresses of the display data RAM for writing and reading.
Data is written pixel-wise into the RAM matrix of DRIVER. The data for one pixel or two pixels is collected(RGB
6-6-6-bit), according to the data formats. As soon as this pixel-data information is complete the”Write access” is
activated on the RAM. The locations of RAM are addressed by the address pointers. When GM=011, 132RGB x
162, the address ranges are X=0 to X=131 (83h) and Y=0 to Y=161 (A1h). Addresses outside these ranges are
not allowed. Before writing to the RAM a window must be defined into which will be written. The window is
programmable via the command register XS, YS designating the start address and XE, YE designating the end
address.
For example the whole display contents will be written, the window is defined by the following values: XS=0(0h)
YS=0(0h) and XE=131(83h), YE=161(A1h)
In vertical addressing mode (MV=1), the Y-address increments after each byte, after the last Y-address (Y=YE),
Y wraps around to YS and X increments to address the next column. In horizontal addressing mode (V=0), the
X-address increments after each byte, after the last X-address(X=XE), X wraps around to XS and Y increments
to address the next row. After the every last address (X=XE and Y=YE) the address pointers wrap around to
address (X=XS and Y=YS)
For flexibility in handling a wide variety of display architectures, the commands “CASET, RASET” and
“MADCTR”, define flags MX and MY, which allows mirroring of the X-address and Y-address. All combinations of
flags are allowed. Below table shows the available combinations of writing to the display RAM. When MX, MY
and MV will be changed the data bust be rewritten to the display RAM.
For each image orientation, the controls for the column and page counters apply as below: -
Condition Column Counter Row Counter
When RAMWR/RAMRD command is accepted Return to “Start
Column (XS)”
Return to “Start
Row (YS)
Complete Pixel Read/Write action Increment by 1 No change
The Column counter value is larger than “End Column(XE)” Return to “Start
Column (XS)”
Increment by 1
The Column counter value is larger than “End Column (XE)” and the
Row counter value is larger than “End Row(YE)”
Return to “Start
Column (XS)”
Return to “Start
Row (YS)