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SH7020 Datasheet, PDF (500/509 Pages) Renesas Technology Corp – SuperH™ RISC engine | |||
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19.3.4 DMAC Timing
Table 19.9 DMAC Timing
Case A: VCC = 3.0 to 5.5 V, VSS = 0 V, Ta = â20 to +75°C*
Case B: VCC = 5.0 V ±10%, VSS = 0 V, Ta = â20 to +75°C*
*: Normal products. Ta = â40 to +85°C for wide-temperature range products.
Item
DREQ0, DREQ1 setup time
DREQ0, DREQ1 hold time
DREQ0, DREQ1 low level width
Case A
Case B
12.5 MHz 16.6 MHz 20 MHz
Symbol Min Max Min Max Min Max Unit Figure
tDRQS
tDRQH
tDRQW
80 â
30 â
1.5 â
40 â
30 â
1.5 â
27 â
30 â
1.5 â
ns 19.34
ns
tcyc 19.35
CK
DREQ0, DREQ1
level
tDRQS
tDRQS tDRQH
DREQ0, DREQ1
edge
DREQ0, DREQ1
level release
tDRQS
Figure 19.34 DREQ0, DREQ1 Input Timing (1)
CK
DREQ0, DREQ1
edge
tDRQW
RENESAS 490
Figure 19.35 DREQ0, DREQ1 Input Timing (2)
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