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83
PRELIMINARY
Some parametric limits are subject to change.
MITSUBISHI MICROCOMPUTERS
M37754M8C-XXXGP, M37754M8C-XXXHP
M37754S4CGP, M37754S4CHP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
PERIPHERAL DEVICE INPUT/OUTPUT TIMING
(V
CC
= 5 V±10 %, V
CC
= 0 V, T
a
= –20 to 85 °C, unless otherwise noted)
If the values depends on external clock frequency f(X
IN
), formulas of the limits are shown below. Also, the values at f(X
IN
) = 40 MHz in high-
speed running and at f(X
IN
) = 25 MHz in low-speed running are shown in ( ). At this time, the clock source select bit is “0.” When the clock
source select bit is “1”, regard f(X
IN
) in tables as 2·f(X
IN
).
The rise and fall time of input signal must be 100 ns or less respectively, unless otherwise noted.
Timer A input
(Up-down input in event counter mode)
t
c(UP)
t
w(UPH)
t
w(UPL)
t
su(UP-T
IN
)
t
h(T
IN
-UP)
Symbol
TAi
OUT
input cycle time
TAi
OUT
input high-level pulse width
TAi
OUT
input low-level pulse width
TAi
OUT
input setup time
TAi
OUT
input hold time
Parameter
Limits
Min.
2000
1000
1000
400
400
Max.
ns
ns
ns
ns
ns
Unit
Timer A input
(External trigger input in pulse width modulation mode)
t
w(TAH)
t
w(TAL)
Symbol
TAi
IN
input high-level pulse width
TAi
IN
input low-level pulse width
Parameter
Min.
80
80
Limits
Max.
ns
ns
Unit
Limits
Symbol
Parameter
Min.
Max.
Unit
8
×
10
9
f(X
IN
)
4
×
10
9
f(X
IN
)
(200)
(160)
t
c(TA)
t
w(TAH)
t
w(TAL)
TAi
IN
input cycle time
TAi
IN
input high-level pulse width
TAi
IN
input low-level pulse width
ns
ns
ns
ns
80
80
Timer A input
(External trigger input in one-shot pulse mode)
Limits
Symbol
Parameter
Min.
Max.
Unit
16
×
10
9
f(X
IN
)
8
×
10
9
f(X
IN
)
8
×
10
9
f(X
IN
)
4
×
10
9
f(X
IN
)
8
×
10
9
f(X
IN
)
4
×
10
9
f(X
IN
)
(400)
(320)
(200)
(160)
(200)
(160)
f(X
IN
)
≤
40 MHz
(X
IN
)
≤
25 MHz
f(X
IN
)
≤
40 MHz
f(X
IN
)
≤
25 MHz
f(X
IN
)
≤
40 MHz
f(X
IN
)
≤
25 MHz
t
c(TA)
t
w(TAH)
t
w(TAL)
TAi
IN
input cycle time
TAi
IN
input high-level pulse width
TAi
IN
input low-level pulse width
ns
ns
ns
ns
ns
ns
Timer A input
(Gating input in timer mode)
Note :
The TAi
IN
input cycle time requires 4 or more cycles of count source. The TAi
IN
input high-level pulse width and the TAi
IN
input low-level pulse width
respectively require 2 or more cycles of the count source. The limits in the table are the values when the count source is f(X
IN
)/4 in high-speed running
(f(X
IN
)
≤
40 MHz) and when the count source is f(X
IN
)/2 in low-speed running (f(X
IN
)
≤
25 MHz). At this time, the clock source select bit is “0.”
Timer A input
(Count input in event counter mode)
t
c(TA)
t
w(TAH)
t
w(TAL)
Symbol
TAi
IN
input cycle time
TAi
IN
input high-level pulse width
TAi
IN
input low-level pulse width
Parameter
Min.
80
40
40
Limits
Max.
ns
ns
ns
Unit
f(X
IN
)
≤
40 MHz
f(X
IN
)
≤
25 MHz