參數(shù)資料
型號(hào)： M37224M3
廠商： Mitsubishi Electric Corporation
英文描述： Single Chip 8 Bits Microcomputer(8位單片機(jī))
中文描述： 單芯片8位單片機(jī)（8位單片機(jī)）
文件頁(yè)數(shù)： 38/83頁(yè)
文件大?。?/td> 901K
代理商： M37224M3
M37224M3-XXXSP
MITSUBISHI MICROCOMPUTERS
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
38
Fig. 37. Supplement Explanation for Display Position
The display position in the vertical direction is determined by count-
ing the horizontal sync signal (H
SYNC
). At this time when V
SYNC
and
H
SYNC
are positive polarity (negative polarity), it starts to count the
rising edge (falling edge) of H
SYNC
signal from after about 1 machine
cycle of rising edge (falling edge) of V
SYNC
signal. So interval from
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) for
avoiding jitter. The polarity of H
SYNC
and V
SYNC
signals can select
with the CRT port control register (address 00EC
16
).
When bits 0 and 1 of the CRT port control register
(address 00EC
16
) are set to “1” (negative polarity)
V
SYNC
signal input
V
control
signal in
microcomputer
Period of counting
H
SYNC
signal
0.125 to 0.25 [
μ
s]
( at f(X
IN
) = 8MHz)
(Note 2)
H
signal input
Not count
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.
Do not generate falling edge of H
SYNC
signal near rising edge of
V
SYNC
control signal in microcomputer to avoid jitter.
The pulse width of V
SYNC
and H
SYNC
needs 8 machine cycles or
more.
2 :
3 :
8 machine cycles
or more
8 machine cycles
or more
Fig. 38. Vertical Position Register i
b7 b6 b5 b4 b3 b2 b1 b0
Vertical position register i (CVi) (i = 1 and 2) [Addresses 00E1
16,
00E2
16
]
B
Name
Functions
After reset
R W
Vertical Position Register i
0
to
6
7
Vertical display start positions
(CVi : CVi0 to CVi6)
128 steps (00
16
to 7F
16
)
Indeterminate
0
Nothing is assigned. This bit is a write disable bit.
When this bit is read out, the value is “0.”
R W
R —
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37224M3-050SP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37224M3-XXXSP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37225ECSP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37225M6 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37225M8 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
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