參數(shù)資料
型號: M37151MF-XXXFP
廠商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
中文描述: 單芯片8位CMOS微機隱蔽字幕解碼器和屏幕顯示控制器
文件頁數(shù): 67/139頁
文件大?。?/td> 1491K
代理商: M37151MF-XXXFP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37151M6/M8/MA/MC/MF-XXXFP, M37151EFFP
MITSUBISHI MICROCOMPUTERS
66
Rev 1.0
The vertical display start position is determined by counting the hori-
zontal sync signal (H
SYNC
). At this time, when V
SYNC
and H
SYNC
are
positive polarity (negative polarity), the count starts at the rising edge
(falling edge) of H
SYNC
signal after the fixed cycle of the rising edge
(falling edge) of V
SYNC
signal. So the interval from the rising edge
(falling edge) of V
SYNC
signal to rising edge (falling edge) of H
SYNC
signal needs enough time (2 machine cycles or more) to avoid jitters.
The polarity of H
SYNC
and V
SYNC
signals can be select with the I/O
polarity control register (address 00D8
16
).
Fig. 8.11.6 Supplement Explanation for Display Position
W
(
a
h
d
e
d
n
r
b
s
i
s
t
s
0
0
0
D
a
n
8
1
d
1
a
o
r
f
e
t
h
s
e
e
t
I
/
t
O
o
p
1
o
l
(
a
n
r
i
t
y
g
a
c
o
t
i
n
e
t
r
o
p
l
o
r
l
e
a
g
r
i
i
y
s
t
)
e
r
e
6
)
e
v
t
V
S
Y
N
C
s
i
g
n
a
l
i
n
p
u
t
V
SYNC
control
signal in
microcomputer
P
r
i
o
d
o
H
S
Y
N
s
0.25 to 0.50 [
μ
s]
( at f(X
IN
) = 8MHz)
e
f
i
c
n
o
a
u
l
n
t
i
n
g
C
g
(S
e
e
n
o
t
e
2
)
H
S
s
i
Y
n
o
N
a
C
l
g
i
n
p
u
t
N
o
t
c
o
u
n
t
1
2
3
4
5
Notes 1 :
The vertical position is determined by counting falling edge of H
SYNC
signal after rising edge of V
SYNC
control signal in the microcomputer.
2 :
Do not generate falling edge of H
SYNC
signal near rising edge of
V
SYNC
control signal in microcomputer to avoid jitter.
3 :
The pulse width of V
SYNC
and H
SYNC
needs 8 machine cycles or
more.
8 machine cycles
or more
8
m
r
a
c
o
h
r
e
i
n
e
c
y
c
l
e
s
m
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