Table 24.20 Bus Timing (2)
Conditions: V
= 3.0 V to 3.6 V, AV
CC
φ = 8 MHz to 33 MHz, T
T
= –40°C to +85°C (wide-range specifications)
a
Item
WR delay time 1
WR delay time 2
WR pulse width 1
WR pulse width 2
Write data delay time
Write data setup time 1
Write data setup time 2
Write data setup time 3
Write data hold time 1
Write data hold time 2*
Write data hold time 3
Write command setup time 1*
Write command setup time 2*
Write command hold time 1*
Write command hold time 2*
Read command setup time 1*
Read command setup time 2*
Read command hold time*
CAS delay time 1*
CAS delay time 2*
CAS setup time 1*
CAS setup time 2*
CAS pulse width 1*
CAS pulse width 2*
CAS precharge time 1*
CAS precharge time 2*
OE delay time 1*
OE delay time 2*
Precharge time 1*
Precharge time 2*
Self-refresh precharge time 1*
Self-refresh precharge time 2*
Rev. 2.00, 05/03, page 776 of 820
= 3.0 V to 3.6 V, V
CC
= –20°C to +75°C (regular specifications),
a
Symbol
Min
t
—
WRD1
t
—
WRD2
1.0 × t
t
– 13
WSW1
cyc
1.5 × t
t
– 13
WSW2
cyc
t
—
WDD
0.5 × t
t
– 13
WDS1
cyc
1.0 × t
t
– 13
WDS2
cyc
1.5 × t
t
– 13
WDS3
cyc
0.5 × t
t
– 8
WDH1
cyc
1.0 × t
t
– 8
WDH2
cyc
1.5 × t
t
– 8
WDH3
cyc
0.5 × t
t
– 10
WCS1
cyc
1.0 × t
t
– 10
WCS2
cyc
0.5 × t
t
– 10
WCH1
cyc
1.0 × t
t
– 10
WCH2
cyc
1.5 × t
t
– 10
RCS1
cyc
2.0 × t
t
– 10
RCS2
cyc
0.5 × t
t
– 10
RCH
cyc
t
—
CASD1
t
—
CASD2
0.5 × t
t
– 10
CSR1
cyc
1.5 × t
t
– 10
CSR2
cyc
1.0 × t
t
– 20
CASW1
cyc
1.5 × t
t
– 20
CASW2
cyc
1.0 × t
t
– 20
CPW1
cyc
1.5 × t
t
– 20
CPW2
cyc
t
—
OED1
t
—
OED2
1.0 × t
t
– 20
PCH1
cyc
1.5 × t
t
– 20
PCH2
cyc
2.5 × t
t
– 20
RPS1
cyc
3.0 × t
t
– 20
RPS2
cyc
= 3.0 V to AV
, V
ref
CC
Max
Unit
15
ns
15
ns
—
ns
—
ns
20
ns
—
ns
—
ns
—
ns
—
ns
—
ns
—
ns
—
ns
—
ns
—
ns
—
ns
—
ns
—
ns
—
ns
15
ns
15
ns
—
ns
—
ns
—
ns
—
ns
—
ns
—
ns
15
ns
15
ns
—
ns
—
ns
—
ns
—
ns
= AV
= 0 V,
SS
SS
Test Conditions
Figures 24.6 to
24.19
Figures 24.20 and
24.21