SH7050 Datasheet, PDF (686/841 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH RISC engine Family/

Section 22 Electrical Characteristics
22.3.4 Direct Memory Access Controller Timing
Table 22.7 Direct Memory Access Controller Timing
Conditions: V_CC = 5.0 V ± 10%, AV_CC = 5.0 V ± 10%, AV_REF = 4.5 V to AV_CC, V_SS = AV_SS = 0 V,
Ta = –40 to +85°C
Item
Symbol Min
DREQ0 and DREQ1 setup time t
27
DRQS
DREQ0 and DREQ1 hold time
t_DRQH
30
DREQ0 and DREQ1 pulse width t_DRQW
1.5
DRAK output delay time
t_DRAKD
—
Max
—
—
—
25
Unit
ns
ns
t_cyc
ns
Figure
22.11
22.12
22.13
CK
DREQ0,
DREQ1
level
DREQ0,
DREQ1
edge
DREQ0,
DREQ1
level release
t_DRQS
t_DRQS
t_DRQH
t_DRQS
Figure 22.11 DREQ0 and DREQ1 Input Timing (1)
Rev. 5.00 Jan 06, 2006 page 666 of 818
REJ09B0273-0500