MC141540 View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
MC141540 Datasheet PDF : 12 Pages
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Display Register
REGISTERS
ÎÎCÎÎC7S0ÎÎ6ÎÎÎÎ5 ÎÎ4 ÎÎÎÎ3 ÎÎ2 ÎÎ1ÎÎÎÎ0ÎÎ
CRADDR
Bit 7 CCS0 — This bit defines a specific character color
out of the two preset colors. Color 1 is selected if this bit is
cleared, and Color 2 otherwise.
Bit 6–0 CRADDR — These seven bits address the 128
characters or symbols residing in the character ROM.
Row Control Registers
7
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ COLN30 R1
Coln 30
6 54 32 1
0
G1 B1 R2 G2 B2 CHS CWS
Bits 7–2 — Color 1 is determined by R1, G1, and B1; Color
2 by R2, G2, and B2.
Bit 1 CHS — This bit determines the height of a display
symbol. When it is set, the symbol is displayed in double
height.
Bit 0 CWS — Bit 0 is similar to Bit 1; when this bit is set, the
character is displayed in double width.
Coln 31
7
6
54
32
1
0
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ COLN31 R3 G3 B3 R4 G4 B4
Bits 7–2 — Color 3 is determined by R3, G3, and B3; Color
4 by R4, G4, and B4.
Window 1 Registers
Row 10 Coln 0, 3, or 6
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ROW 10
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ COLN 0,
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ 3, or 6
76
5432
10
ROW START ADDR
ROW END ADDR
MSB
LSB MSB
LSB
Row 10 Coln 1, 4, or 7
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ROW 10
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ COLN 1,
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ 4, or 7
7
6
5432
1
0
COL START ADDR
MSB
LSB WEN CCS1
Bit 2 WEN — This bit enables the background Window 1
generation when it is set.
Bit 1 CCS1 — This additional color select bit provides the
characters residing within Window 1 with two extra color
selections, making a total of four selections for that row.
Row 10 Coln 2, 5, or 8
76
5432
ROW 10
COL END ADDR
ÎÎÎÎÎÎÎÎÎÎÎÎ COLN2, MSB
ÎÎÎÎÎÎÎÎÎÎÎÎ 5, or 8
LSB R
10
GB
Window 1 occupies Columns 0–2 of Row 10; Window 2
occupies Columns 3–5; and Window 3 occupies Columns
6–8. Window 1 has the highest priority, and Window 3 the
least. If window overlapping occurs, the higher priority win-
dow will cover the lower one, and the higher priority color will
take over on the overlap window area. If the start address is
greater than the end address, this window will not be dis-
played.
Frame Control Registers
Coln 9
7
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ COLN 9
6 54
MSB
32
VERTD
10
LSB
Bit 7–0 VERTD — These six bits define the vertical starting
position. There are a total of 64 steps, with an increment of
four horizontal lines per step for each field. The value cannot
be zero anytime, and the default value is 4.
Coln 10
76543210
ÎÎÎÎÎÎÎÎÎÎÎÎÎ COLN 10
MSB
HORD
LSB
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Bit 6–0 HORD — These bits define the horizontal starting
position for character display. Five bits give a total of 32
steps and each increment represents a five–dot shift to the
right on the monitor screen. The value cannot be zero any-
time, and the default value is 5.
Coln 11
7 65 43 2 1 0
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ COLN 11
CH5 CH4 CH3 CH2 CH1 CH0
Bit 5–0 CH5–CH0 — These six bits determine the dis-
played character height. It is possible to have a proper char-
acter height by setting a value greater than or equal to 16 on
a different horizontal frequency monitor. Setting a value be-
low 16 will not have a predictable result. Figure 6 illustrates
how this chip expands the built–in character font to the de-
sired height.
Coln 12
76
5
4 3 21 0
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ COLN12 OSD_EN BSEN SHADOW
FBKGC
Bit 7 OSD_EN — The OSD circuit is activated when this bit
is set.
Bit 6 BSEN — This bit enables the character bordering or
shadowing function when it is set.
Bit 5 SHADOW — Characters with black–edge shadowing
are selected if this bit is set; otherwise bordering prevails.
Bit 0 FBKGC — Bit 0 determines the configuration of the
FBKG output pin. When it is clear, the FBKG pin outputs high
while displaying characters or windows; otherwise, the
FBKG pin outputs high only while displaying characters.
MC141540
6
MOTOROLA
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