Renesas ZTAT H8S/2357F, Hardware Manual

Page: 745 / 1047

Rev.6.00 Oct.28.2004 page 717 of 1016
REJ09B0138-0600H
ø
BREQO
t
BRQOD
t
BRQOD
Figure 22-49 External Bus Request Output Timing
(4) DMAC Timing
Table 22-17 lists the DMAC timing.
Table 22-17 DMAC Timing
Conditions: V
CC
= 5.0 V
±
10%, AV
CC
= 5.0 V
±
10%, V
ref
= 4.5 V to AV
CC
,
V
SS
= AV
SS
= 0 V, ø = 10 to 20 MHz, T
a
= –20 to +75
°
C (regular specifications),
T
a
= –40 to +85
°
C (wide-range specifications)
Condition
Test
Item Symbol Min Max Unit Conditions
DREQ
setup time t
DRQS
30 — ns Figure 22-53
DREQ
hold time t
DRQH
10 —
TEND
delay time t
TED
— 20 Figure 22-52
DACK
delay time 1 t
DACD1
— 20 ns Figure 22-50,
DACK
delay time 2 t
DACD2
— 20
Figure 22-51