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(3) Bus Timing
Table 20-15 Bus Timing
Condition C: V
= 2.4 V to 3.6 V, AV
CC
0 V, φ = 2 MHz to 14 MHz, T
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
= 2.4 V to 3.6 V, V
CC
= –20°C to 75°C (regular specifications)
a
Condition C
Symbol
Min
t
—
AD
0.5 × t
t
– 15 —
AS
cyc
0.5 × t
t
– 15 —
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
– 25 —
WSW1
cyc
1.5 × t
t
– 25 —
WSW2
cyc
t
—
WDD
0.5 × t
t
– 25 —
WDS
cyc
0.5 × t
t
– 15 —
WDH
cyc
t
40
WTS
t
5
WTH
t
30
BRQS
t
—
BACD
t
—
BZD
t
—
BRQOD
= 2.4 V to AV
ref
Max
Unit
20
ns
ns
ns
25
ns
25
ns
25
ns
25
ns
—
ns
—
ns
1.0 × t
– 35 ns
cyc
1.5 × t
– 35 ns
cyc
2.0 × t
– 35 ns
cyc
2.5 × t
– 35 ns
cyc
3.0 × t
– 35 ns
cyc
25
ns
25
ns
ns
ns
30
ns
ns
ns
—
ns
—
ns
—
ns
15
ns
70
ns
40
ns
Rev. 5.00, 12/03, page 821 of 1088
, 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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