Hitachi H8S/2678 Series Reference Manual page 440

Bus Timing
Table 7.16 Bus Timing
Condition A*: V
CC
V
SS
specifications), T
Condition B: V
CC
V
SS
specifications), T
* In planning stage
Item Symbol
Address delay t
AD
time
Address setup t
AS1
time 1
Address setup t
AS2
time 2
Address setup t
AS3
time 3
Address setup t
AS4
time 4
Address hold t
AH1
time 1
Address hold t
AH2
time 2
Address hold t
AH3
time 3
CS delay time 1
t
CSD1
CS delay time 2
t
CSD2
CS delay time 3
t
CSD3
AS delay time
t
ASD
RD delay time 1 t
RSD1
RD delay time 2 t
RSD2
Read data setup t
RDS1
time 1
Read data setup t
RDS2
time 2
= 2.7 V to 3.6 V, AV
= AV = 0 V, ø = 2 MHz to 20 MHz, T
SS
= –40°C to +85°C (wide-range specifications)
a
= 3.0 V to 3.6 V, AV
= AV = 0 V, ø = 2 MHz to 33 MHz, T
SS
= –40°C to +85°C (wide-range specifications)
a
Condition A
Min Max
— 20
0.5 × t
– 15 —
cyc
1.0 × t
– 15 —
cyc
1.5 × t
– 15 —
cyc
2.0 × t
– 15 —
cyc
0.5 × t
– 10 —
cyc
1.0 × t
– 10 —
cyc
1.5 × t
– 10 —
cyc
— 20
— 20
— 20
— 20
— 20
— 20
15 —
15 —
= 2.7 V to 3.6 V, V
CC
a
= 3.0 V to 3.6 V, V
CC
a
Min
—
0.5 × t
cyc
1.0 × t
cyc
1.5 × t
cyc
2.0 × t
cyc
0.5 × t
cyc
1.0 × t
cyc
1.5 × t
cyc
—
—
—
—
—
—
15
15
= 2.7 V to AV
ref CC
= –20°C to +75°C (regular
= 3.0 V to AV
ref CC
= –20°C to +75°C (regular
Condition B
Max
20
– 13 —
– 13 —
– 13 —
– 13 —
– 8 —
– 8 —
– 8 —
15
15
20
15
15
15
—
—
,
,
Test
Unit Conditions
ns Figure7.6 to
Figure7.19
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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