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參數(shù)資料
| 型號(hào)： | M38856F9-HP |
| 廠商： | Renesas Technology Corp. |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片8位CMOS微機(jī) |
| 文件頁數(shù)： | 61/103頁 |
| 文件大?。?/td> | 1580K |
| 代理商： | M38856F9-HP |
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3885 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
60
Operation of Serialized IRQ
A cycle operation of serialized IRQ starts with Start Frame and fin-
ishes with Stop Frame. There are two modes of operation :
Continuous (Idle) mode and Quiet (Active) mode. The next opera-
tion mode is determined by monitoring the stop frame pulse width.
G
Timing of serialized IRQ cycle
Figure 54 shows the timing diagram of serialized IRQ cycle.
(1) Start Frame
The Start Frame is detected when the SERIRQ line remains
“
L
”
in
4 to 8 clocks.
Fig. 54 Timing diagram of serialized IRQ cycle
(2) IRQ/Data Frame
Each IRQ/Data Frame is three clocks. When the IRQi (i = 0, 1, x)
request is
“
0
”
, then the SERIRQ line is driven to
“
L
”
during the
Sample phase (1
st
clock) of the corresponding IRQ/Data frame,
to
“
H
”
during the Recovery phase (2
nd
clock), to tri-state during
the Turn-around phase (3
rd
clock). When the IRQi request is
“
1
”
,
then the SERIRQ line is tri-state in all phases (3 clocks period).
(3) Stop Frame
The Stop Frame is detected when the SERIRQ line remains
“
L
”
in
2 or 3 clocks. The next operation mode is Quiet mode when the
pulse width of
“
L
”
is 2 clocks. The next operation mode is the
Continuous mode when the pulse width is 3 clocks.
Start frame
I
R
Q
0
f
r
a
m
e
IRQ1 frame
IRQ15 frame
IOCHK frame
IRQ1
device
control
S
t
o
p
f
r
a
m
e
To
t
h
e
n
e
x
t
c
y
c
l
e
IRQ15
device
control
Host control
C
R
l
o
c
k
S
E
I
R
Q
Driver source
H
o
s
t
c
o
n
t
r
o
l
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M38856FA-HP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38856FB-HP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38856FC-HP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38856FD-HP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38856FE-HP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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