
108
PRELIMINARY
Some parametric limits are subject to change.
MITSUBISHI MICROCOMPUTERS
M37754M8C-XXXGP, M37754M8C-XXXHP
M37754S4CGP, M37754S4CHP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
φ
high-level pulse width,
φ
low-level pulse width
WR output delay time
___
WR low-level pulse width
___
Address output delay time
Address output delay time
Address output delay time
____
____
____
Chip select output delay time
Chip select output delay time
Chip select output delay time
Data output delay time
Floating start delay time
ALE output delay time
ALE output delay time
ALE pulse width
Address hold time
Address hold time
____
____
Chip select hold time
Chip select hold time
Data hold time
Floating release delay time
t
w(
φ
H)
, t
w(
φ
L)
t
d(
φ
1–WR)
t
d(
φ
1–RD)
t
w(WR)
t
w(RD)
t
d(A–WR)
t
d(A–RD)
t
d(A–ALE)
t
d(BHE–WR)
t
d(BHE–RD)
t
d(BHE–ALE)
t
d(CS–WR)
t
d(CS–RD)
t
d(CS–ALE)
t
d(WR–DLQ/DHQ)
t
pxz(WR–DLZ/DHZ)
t
d(ALE–WR)
t
d(ALE–RD)
t
w(ALE)
t
h(WR–A)
t
h(RD–A)
t
d(WR–BHE)
t
d(RD–BHE)
t
d(WR–CS)
t
d(RD–CS)
t
h(WR–DLQ/DHQ)
t
pzx(WR–DLZ/DHZ)
Symbol
Parameter
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
– 20
– 20
– 20
– 25
– 25
– 40
– 25
– 25
– 40
– 25
– 25
– 40
+ 5
– 15
– 15
– 15
– 15
– 15
– 15
– 15
– 10
Min.
f (X
IN
) = 40 MHz
5
–7
–7
5
5
25
25
10
25
25
10
25
25
10
30
4
4
10
10
10
10
10
10
10
15
0
Max.
12
12
35
Bus timing
data formula
1
×
10
9
f(X
IN
)
1
×
10
9
f(X
IN
)
1
×
9
f(X
IN
)
2
×
10
9
f(X
IN
)
2
×
10
9
f(X
IN
)
2
×
10
9
f(X
IN
)
2
×
10
9
f(X
IN
)
2
×
10
9
f(X
IN
)
2
×
10
9
f(X
IN
)
2
×
10
9
f(X
IN
)
2
×
10
9
f(X
IN
)
2
×
10
9
f(X
IN
)
1
×
10
9
f(X
IN
)
1
×
10
9
f(X
IN
)
1
×
10
9
f(X
IN
)
1
×
10
9
f(X
IN
)
1
×
10
9
f(X
IN
)
1
×
10
9
f(X
IN
)
1
×
10
9
f(X
IN
)
1
×
10
9
f(X
IN
)
1
×
10
9
f(X
IN
)
————
————
: f(X
IN
)
≤
20 MHz when the clock source select bit = “1”.
: f(X
IN
)
=
20 MHz when the clock source select bit = “1”.
<NOTE> External bus timing when internal memory area is accessed (2-
φ
access) in high-speed
running
(V
CC
= 5 V±10 %, V
SS
= 0 V, T
a
= –20 to 85 °C, f(X
IN
)
≤
40 MHz when the clock source select bit = “0”
)
————
————