參數(shù)資料
型號： M3851
廠商： Mitsubishi Electric Corporation
英文描述： Single Chip 8 Bits Microcomputer(8位單片機)
中文描述： 單芯片8位單片機（8位單片機）
文件頁數(shù)： 47/61頁
文件大?。?/td> 904K
代理商： M3851
47
3851 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
TIMING REQUIREMENTS
Table 17 Timing requirements (1)
(V
CC
= 4.0 to 5.5 V, V
SS
= 0 V, T
a
= –20 to 85 °C, unless otherwise noted)
Reset input “L” pulse width
External clock input cycle time
External clock input “H” pulse width
External clock input “L” pulse width
CNTR
0
, CNTR
1
input cycle time
CNTR
0
, CNTR
1
, INT
0
–INT
3
input “H” pulse width
CNTR
0
, CNTR
1
, INT
0
–INT
3
input “L” pulse width
Serial I/O clock input cycle time (Note)
Serial I/O clock
input “H” pulse width (Note)
Serial I/O clock
input “L” pulse width (Note)
Serial I/O input setup time
Serial I/O input hold time
t
W
(RESET)
t
C
(X
IN
)
t
WH
(X
IN
)
t
WL
(X
IN
)
t
C
(CNTR)
t
WH
(CNTR)
t
WL
(CNTR)
t
C
(S
CLK
)
t
WH
(S
CLK
)
t
WL
(S
CLK
)
t
su
(R
x
D-S
CLK
)
t
h
(S
CLK
-R
x
D)
Limits
Typ.
μ
s
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Parameter
Min.
2
125
50
50
200
80
80
800
370
370
220
100
Max.
Symbol
Unit
Note :
When f(X
IN
) = 8 MHz and bit 6 of address 001A
16
is “1” (clock synchronous).
Divide this value by four when f(X
IN
) = 8 MHz and bit 6 of address 001A
16
is “0” (UART).
Table 18 Timing requirements (2)
(V
CC
= 2.7 to 4.0 V, V
SS
= 0 V, T
a
= –20 to 85 °C, unless otherwise noted)
Reset input “L” pulse width
External clock input cycle time
External clock input “H” pulse width
External clock input “L” pulse width
CNTR
0
, CNTR
1
input cycle time
CNTR
0
, CNTR
1
, INT
0
–INT
3
input “H” pulse width
CNTR
0
, CNTR
1
, INT
0
–INT
3
input “L” pulse width
Serial I/O clock input cycle time (Note)
Serial I/O clock
input “H” pulse width (Note)
Serial I/O clock
input “L” pulse width (Note)
Serial I/O input setup time
Serial I/O input hold time
t
W
(RESET)
t
C
(X
IN
)
t
WH
(X
IN
)
t
WL
(X
IN
)
t
C
(CNTR)
t
WH
(CNTR)
t
WL
(CNTR)
t
C
(S
CLK
)
t
WH
(S
CLK
)
t
WL
(S
CLK
)
t
su
(R
x
D-S
CLK
)
t
h
(S
CLK
-R
x
D)
Limits
Typ.
μ
s
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Parameter
Min.
2
250
100
100
500
230
230
2000
950
950
400
200
Max.
Symbol
Unit
Note :
When f(X
IN
) = 8 MHz and bit 6 of address 001A
16
is “1” (clock synchronous).
Divide this value by four when f(X
IN
) = 8 MHz and bit 6 of address 001A
16
is “0” (UART).
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相關代理商/技術參數(shù)
參數(shù)描述
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