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No. 17S142-00
STC-HD853HDMI
Product specifications and User’s guide
78/81
8.6 OSCD (On Screen Character Display) Command
2 Bytes Command
Note: The data have to send as follow order D15-D8, D7-D0.
Function
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Video RAM All
Clear Command
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Display Control
Command
0
0
0
0
1
0
0
0
DO
0
FC
FA
0
0
BL1
BL0
Character Display
Position Control
Command
0
0
0
1
0
0
V4
V3
V2
V1
V0
H4
H3
H2
H1
H0
Write Address
Control Command
0
0
0
1
1
0
0
AD8
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
Character Size
Control Command
0
0
1
0
0
SV2
SV1
SV0
SH2
SH1
SH0
0
AR3
AR2
AR1
AR0
Video RAM All Clear Command
Clear all character data (12 lines 28 digits) on Video RAM.
Meanwhile, display settings are cleared (Display ON, Frame color (Black), Framing ON, Blinking OFF) and character size
changes to standard size (x1) on all lines.
Display Control Command
DO: Display
(0: Display ON, 1: Display OFF)
FC: Frame color
(0: Black, 1: White)
FA: Framing
(0: ON, 1: OFF)
BL1, BL0: Blinking
(00: Blinking OFF, 01: Blinking (Frequency approximately 2 Hz),
02: Blinking (Frequency approximately 1 Hz), 03: Blinking (Frequency approximately 0.5 Hz))
Character Display Position Control Command
Sets the start position. 32 steps / 32 dots unit on horizontal. 32 steps / 32 lines unit on vertical.
H4, H3, H2, H1, H0: Horizontal 32 dots unit (0 to 31)
V4, V3, V2, V1, V0: Vertical 32 lines unit (0 to 31)
Write Address Control Command
AD8, AD7, AD6, AD5, AD4, AD3, AD2, AD1, AD0: Address (0 to 335)
Sets the address to write character.
The address consists of RAW 0 (Column 0 to 27), RAW 1 (Column 56 to 83) … RAW 11 (Column 308 to 335).
Character Size Control Command
Sets the character size for each RAW.
SV1, SV0: Size on Vertical
(000: x1, 001: x2, 010: x3, 011: x4, 100: x5, 101: x6, 110: x7, 111: x8)
SH1, SH0: Size on Horizontal
(00:0 x1, 001: x2, 010: x3, 011: x4, 100: x5, 101: x6, 110: x7, 111: x8)
AR3, AR2, AR1, AR0: RAW
(0 to 11)