Dmac Timing - Hitachi SH7032 Hardware Manual

(4) DMAC Timing

Table 20.21 DMAC Timing
Conditions: V = 3.3 V ±0.3V, AV
CC
AV , V
CC
Notes: * Regular-specification products; for wide-temperature-range products, Ta = –40 to +85°C
Item
DREQ0, DREQ1 setup time
DREQ0, DREQ1 hold time
DREQ0, DREQ1 Pulse width
DREQ0, DREQ1
DREQ0, DREQ1
DREQ0, DREQ1
level release
546
= 3.3 V ±0.3V, AV
CC
= 0 V, Ta = –20 to +75°C *
= AV
SS SS
Symbol
t
DRQS
t
DRQH
t
DRQW
CK
level
edge
Figure 20.65 DREQ0, DREQ1 Input Timing (1)
= V
CC
12.5 MHz
Min Max Min
80 — 27
30 — 30
1.5 — 1.5
t
DRQS
t t
DRQS
t
DRQS
±0.3V, AV = 3.0 V to
CC ref
20 MHz
Max Unit
— ns
— ns
— t
cyc
DRQH
Figure
20.65
20.66