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(3) Bus Timing
Table 20-24 Bus Timing
Condition B: V
= 3.0 V to 3.6 V, AV
CC
0 V, φ = 2 MHz to 25 MHz, T
T
= –40°C to 85°C (wide-range specifications)
a
Item
Address delay time
Address setup time
Address hold time
CS delay time 1
AS delay time
RD delay time 1
RD delay time 2
Read data setup time
Read data hold time
Read data access time 1
Read data access time 2
Read data access time 3
Read data access time 4
Read data access time 5
WR delay time 1
WR delay time 2
WR pulse width 1
WR pulse width 2
Write data delay time
Write data setup time
Write data hold time
WAIT setup time
WAIT hold time
BREQ setup time
BACK delay time
Bus floating time
BREQO delay time
Rev. 5.00, 12/03, page 830 of 1088
= 3.0 V to 3.6 V, V
CC
= –20°C to 75°C (regular specifications),
a
Symbol
Min
t
—
AD
0.5 × t
t
– 15
AS
cyc
0.5 × t
t
– 8
AH
cyc
t
—
CSD1
t
—
ASD
t
—
RSD1
t
—
RSD2
t
15
RDS
t
0
RDH
t
—
ACC1
t
—
ACC2
t
—
ACC3
t
—
ACC4
t
—
ACC5
t
—
WRD1
t
—
WRD2
1.0 × t
t
– 15
WSW1
cyc
1.5 × t
t
– 15
WSW2
cyc
t
—
WDD
0.5 × t
t
– 15
WDS
cyc
0.5 × t
t
– 8
WDH
cyc
t
25
WTS
t
5
WTH
t
30
BRQS
t
—
BACD
t
—
BZD
t
—
BRQOD
= 3.0 V to AV
ref
Max
Unit
20
ns
—
ns
—
ns
15
ns
15
ns
15
ns
15
ns
—
ns
—
ns
1.0 × t
– 20
ns
cyc
1.5 × t
– 20
ns
cyc
2.0 × t
– 20
ns
cyc
2.5 × t
– 20
ns
cyc
3.0 × t
– 20
ns
cyc
15
ns
15
ns
—
ns
—
ns
20
ns
—
ns
—
ns
—
ns
—
ns
—
ns
15
ns
40
ns
25
ns
, V
= AV
=
CC
SS
SS
Test Conditions
Figures 20-6 to 20-10
Figure 20-8
Figure 20-11
Figure 20-12
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