Hitachi SH7032 - Bus Timing

527
(3) Bus Timing
Tables 20.20 show the bus timing.
Table 20.20 Bus Timing (1)
Conditions: V
CC
= 3.3 V ±0.3V, AV
CC
= 3.3 V ±0.3V, AV
CC
= V
CC
±0.3V, AV
ref
= 3.0 V to
AV
CC
, V
SS
= AV
SS
= 0 V, φ = 20 MHz
*
1
, Ta = –20 to +75°C
*
2
Notes: *1 ROMless products
*2 Regular-specification products; for wide-temperature-range products, Ta = –40 to
+85°C
Item Symbol Min Max Unit Figures
Address delay time t
AD
—20
*
1
ns 20.52, 20.53, 20.55–
20.58, 20.63, 20.64
CS delay time 1 t
CSD1
— 25 ns 20.52, 20.53, 20.64
CS delay time 2 t
CSD2
—25ns
CS delay time 3 t
CSD3
— 25 ns 20.63
CS delay time 4 t
CSD4
—25ns
Access time 1
*
6
35% duty
*
2
t
RDAC1
t
cyc
× 0.65 – 20— ns 20.52
from read strobe
50% duty t
cyc
× 0.5 – 20 — ns
Access time 2
*
6
from read strobe
35% duty
*
2
t
RDAC2
t
cyc
× (n+1.65)
– 20
*
3
— ns 20.53, 20.54
50% duty t
cyc
× (n+1.5)
– 20
*
3
—ns
Access time 3
*
6
from read strobe
35% duty
*
2
t
RDAC3
t
cyc
× (n+0.65)
– 20
*
3
— ns 20.63
50% duty t
cyc
× (n+0.5)
– 20
*
3
—ns
Read strobe delay time t
RSD
— 20 ns 20.52, 20.53, 20.55–
20.59, 20.63
Read data setup time t
RDS
15 — ns 20.52, 20.53, 20.55–
20.58, 20.63
Read data hold time t
RDH
0—ns
Write strobe delay time 1 t
WSD1
— 20 ns 20.53, 20.57, 20.58,
20.63, 20.64
Write strobe delay time 2 t
WSD2
— 20 ns 20.53, 20.57, 20.58,
20.63
Write strobe delay time 3 t
WSD3
— 20 ns 20.55, 20.56
Write strobe delay time 4 t
WSD4
— 20 ns 20.55, 20.56, 20.64