r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1606

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

32. Electrical Characteristics
Rev.1.00 Jan. 10, 2008 Page 1576 of 1658
REJ09B0261-0100
Figure 32.10 SRAM Bus Cycle: Basic Bus Cycle (One Internal Wait Cycle)
DACKn
(SA: IO ← memory)
DACKn
(SA: IO → memory)
CLKOUT
A25 to A0
CSn
RD/WR
RD
D31 to D0
(Read)
WEn
D31 to D0
(Write)
BS
RDY
DACKn
(DA)
Legend
IO:
SA:
DA:
Note: DACK is configured as active-high.
DACK device
Single-address DMA transfer
Dual-address DMA transfer
:
t
t
t
WED1
WDD
DACD
t
t
t
t
t
t
t
RSD
RWD
CSD
BSD
DACDF
DACD
AD
T1
t
WEDF
t
t
RDYS
WDD
t
t
t
DACD
RSD
Tw
BSD
t
RDS
T2
t
RDYH
t
t
DACDF
WEDF
t
WDD
t
t
t
t
t
CSD
AD
RSD
t
RWD
DACD
DACD
t
RDH