
39
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Before
After
φ
ONW input hold time
Before
φ
data bus set up time
After
φ
data bus hold time
Before RD ONW input set up time
___
_____
Before WR ONW input set up time
After RD ONW input hold time
___
_____
After WR ONW input hold time
Before RD data bus set up time
After RD data bus hold time
t
su(ONW–
φ
)
t
h(
φ
–ONW)
t
su(DB–
φ
)
t
h(
φ
–DB)
t
su
(ONW–RD)
t
su
(ONW–WR)
t
h(RD–ONW)
t
h(WR–ONW)
t
su(DB–RD)
t
h(RD–DB)
Symbol
Parameter
Limits
Typ.
Min.
–20
–20
60
ns
ns
ns
ns
ns
ns
ns
ns
Unit
0
–20
–20
65
0
Max.
φ
clock cycle time
φ
clock “H” pulse width
φ
clock “L” pulse width
After
φ
AD
15
–AD
8
delay time
After
φ
AD
15
–AD
8
valid time
After
φ
AD
7
–AD
0
delay time
After
φ
AD
7
–AD
0
valid time
SYNC delay time
___
___
___
___
After
φ
data bus delay time
φ
data bus valid time
___
___
(When one-wait is valid)
After AD
15
–AD
8
RD delay time
After AD
15
–AD
8
After AD
7
–AD
0
RD delay time
___
After AD
7
–AD
0
WR delay time
After RD AD
15
–AD
8
valid time
___
After WR AD
15
–AD
8
valid time
After RD AD
7
–AD
0
valid time
___
After WR AD
7
–AD
0
valid time
After WR data bus delay time
output delay time (Note 1)
RESET
OUT
output valid time (Note 1)
The RESET
OUT
output goes “H” in sync with the fall of the
φ
clock that is anywhere between about 8 cycle and 13 cycles after
the RESET input goes “H”.
___
40
45
20
10
70
65
200
200
Symbol
Parameter
Limits
Typ.
Min.
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit
t
c(X
IN
)
–10
t
c(X
IN
)
–10
6
6
3
15
t
c(X
IN
)
–10
3t
c(X
IN
)
–10
t
c(X
IN
)
–35
t
c(X
IN
)
–40
0
0
10
0
2t
c(X
IN
)
20
10
25
10
20
10
10
5
20
t
c(X
IN
)
–15
t
c(X
IN
)
–20
5
5
15
Max.
t
c(
φ
)
t
wH(
φ
)
t
wL(
φ
)
t
d(
φ
–AH)
t
v(
φ
–AH)
t
d(
φ
–AL)
t
v(
φ
–AL)
t
d(
φ
–SYNC)
t
v(
φ
–SYNC)
t
d(
φ
–WR)
t
v(
φ
–WR)
t
d(
φ
–DB)
t
v(
φ
–DB)
t
wL(RD)
t
wL(WR)
t
d(AH–RD)
t
d(AH–WR)
t
d(AL–RD)
t
d(AL–WR)
t
v(RD–AH)
t
v(WR–AH)
t
v(RD–AL)
t
v(WR–AL)
t
d(WR–DB)
t
v(WR–DB)
t
d
(RESET–RESET
OUT
)
t
v(
φ
–RESET)
Test conditions
Note 1:
Fig. 32
(V
CC
= 4.0 to 5.5 V, V
SS =
0 V, T
a
= –20 to 85
°
C, unless otherwise noted)
TIMING REQUIREMENTS 1 IN MEMORY EXPANSION MODE AND MICROPROCESSOR MODE
SWITCHING CHARACTERISTICS 1 IN MEMORY EXPANSION MODE AND MICROPROCESSOR MODE
(V
CC
= 4.0 to 5.5 V, V
SS =
0 V, T
a
= –20 to 85
°
C, unless otherwise noted)
MITSUBISHI MICROCOMPUTERS
3806 Group