SH7014 Datasheet, PDF (613/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

22. Electrical Characteristics (5 V 28.7 MHz)
22.3.4 Direct Memory Access Controller Timing
Table 22.8 shows the Direct Memory Access Controller Timing.
Table 22.8 Direct Memory Access Controller Timing
Conditions: V_CC = 5.0 V ±10%, AV_CC = 5.0 V ±10%, AV_CC = V_CC ±10%, V_SS = AV_SS = 0 V,
Ta = −20 to +75°C
Item
Symbol Min
DREQ0 and DREQ1 setup time t_DRQS
18
DREQ0 and DREQ1 hold time t_DRQH
18
DREQ0 and DREQ1 pulse width t_DRQW
1.5
DRAK output delay time
t_DRAKD
18
Max
⎯
⎯
⎯
⎯
Unit
ns
ns
t_cyc
ns
Figure
22.18
22.19
22.20
CK
DREQ0,
DREQ1
Level
DREQ0,
DREQ1
Edge
DREQ0,
DREQ1
Level clear
t_DRQS
t_DRQS
t_DRQH
t_DRQS
Figure 22.18 DREQ0 and DREQ1 Input Timing (1)
Rev.5.00 Sep. 27, 2007 Page 579 of 716
REJ09B0398-0500