Bus Timing - Hitachi SH7032 Hardware Manual

(3) Bus Timing

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