HD66773R Datasheet, PDF (45/133 Pages) Renesas Technology Corp – 262,144-color, 132 x 176-dot Graphics Controller Driver for TFT LCD panels

HD66773R
SE27–20: Specify the end position for driving the second screen by line. The liquid crystal is driven by to
the gate driver of “the set value + 1”. For instance, when SPT = 1, and SS27–20 = “20”H, SE27–20 =
“4F”H, the liquid crystal is driven from 33 to G80. Make sure that SS17–10 ≤ SE17–10 < SS27–20 ≤
SE27–20 ≤ “AEF”H. For details, see “Screen-split Drive Function”.
Horizontal RAM Address Position (R16h)
Vertical RAM Address Position (R17h)
R/W RS IB15 IB14 IB13 IB12 IB11 IB10 IB9 IB8 IB7 IB6 IB5 IB4 IB3 IB2 IB1 IB0
W 1 _{HEA7 HEA6 HEA5 HEA4 HEA3 HEA2 HEA1 HEA0 HSA7 HSA6 HSA5 HSA4 HSA3 HSA2 HSA1 HSA0}
W 1 VEA7 VEA6 VEA5 VEA4 VEA3 VEA2 VEA1 VEA0 VSA7 VSA6 VSA5 VSA4 VSA3 VSA2 VSA1 VSA0
HSA7-0/HEA7-0: Specify the start/end positions of the window-address range by address in the horizontal
direction. Data are written to GRAM within the area determined by the addresses specified by HEA7-0 and
HSA7-0. These addresses must be set before RAM write. In setting these bits, make sure that “00”h ≤
HSA7-0 ≤ HEA7-0 ≤ “83”h.
VSA7-0/VEA7-0: Specify the start/end positions of the window-address range by address in the vertical
direction. Data are written to GRAM within the area determined by the addresses specified by VEA7-0 and
VSA7-0. These addresses must be set before RAM write. In setting these bits, make sure that “00”h ≤
VSA7-0 ≤ VEA7-0 ≤ “AF”h.
HSA
0000h
VSA
HEA
Window Address
VEA
GRAM Address Space
Window Address setting range
"00"h ҇ HSA7-0 ҇ HEA7-0 ҇ "83"h
"00"h ҇ VSA7-0 ҇ VEA7-0 ҇ "AF"h
AF83h
Note 1) The window address area should be set within the GRAM address space.
Note 2) In the high speed write mode, data are written to GRAM every 4 word. Some window address setting may
require insurtion of dummy write. See "High Speed Burst RAM write".
Note 3) The address set must be within the window address area. In the high speed write mode, set within
the area including dummy write area.
Rev.1.10, Jun.21.2003, page 45 of 133