HD66766R Datasheet, PDF (32/97 Pages) Hitachi Semiconductor – 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors

HD66766R
1^st Screen Driving Position (R14h)
2^nd Screen Driving Position (R15h)
Rev. 1.0-1 / September 2002
R/W RS DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
W 1 SE17 ^SE16 SE15 SE14 SE13 SE12 SE11 SE10 SS17 SS16 SS15 SS14 SS13 SS12 SS11 SS10
W 1 SE27 SE26 SE25 SE24 SE23 SE22 SE21 SE20 SS27 SS26 SS25 SS24 SS23 SS22 SS21 SS20
Figure 17
SS17–0: Specify the driving start position for the first screen in a line unit. The LCD driving starts from
the 'set value + 1' common driver.
SE17–0: Specify the driving end position for the first screen in a line unit. The LCD driving is performed
to the 'set value + 1' common driver. For instance, when SS17–10 = “07”H and SE17–10 = “10”H are
set, the LCD driving is performed from COM8 to COM17, and non-selection driving is performed from
COM1 to COM7, COM18 and others. Ensure that SS17–10 ≤ SE17–10 ≤ “AF”H. For details, see the
Screen-division Driving Function section.
SS27–0: Specify the driving start position for the second screen in a line unit. The LCD driving starts
from the 'set value + 1' common driver. The second screen is driven when SPT = “1”.
SE27–0: Specify the driving end position for the second screen in a line unit. The LCD driving is
performed to the 'set value + 1' common driver. For instance, when SPT = “1”, SS27–20 = “20”H, and
SE27–20 = “4F”H are set, the LCD driving is performed from COM33 to COM80. Ensure that SS17–
10 ≤ SE17–10 ≤ SS27–20 ≤ SE27–20 ≤ “AF”H. For details, see the Screen-division Driving Function
section.
Horizontal RAM Address Position (R16h)
Vertical RAM Address Position (R17h)
R/W RS ^{DB15 DB14 DB13} DB12 ^{DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0}
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
Figure 18 Horizontal/Vertical RAM Address Position Instruction
HSA5-0/HEA5-0: Specify the horizontal start/end positions of a window for access in memory. Data can
be written to the GRAM from the address specified by HEA7-0 from the address specified by HSA5-0.
Note that an address must be set before RAM is written to. Ensure 00h ≤ HSA7-0 ≤ HEA7-0 ≤ 83h
VSA7-0/VEA7-0: Specify the vertical start/end positions of a window for access in memory. Data can be
written to the GRAM from the address specified by VEA7-0 from the address specified by VSA7-0. Note
that an address must be set before RAM is written to. Ensure “00”h ≤ VSA7-0 ≤ VEA7-0 ≤ “AF”h.
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