r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1607

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

(One Internal Wait Cycle + One External Wait Cycle)
DACKn
(SA: IO ← memory)
DACKn
(SA: IO → memory)
Figure 32.11 SRAM Bus Cycle: Basic Bus Cycle
Legend:
IO:
SA:
DA:
Note: DACK is configured as active-high.
CLKOUT
A25 to A0
CSn
RD/WR
RD
(Read)
WEn
D31 to D0
(Write)
BS
RDY
DACKn
(DA)
D31 to D0
DACK device
Single-address DMA transfer
Dual-address DMA transfer
t
t
t
WED1
WDD
DACD
t
t
t
t
t
t
t
DACDF
RWD
BSD
DACD
CSD
AD
RSD
T1
t
WEDF
t
RDYS
t
WDD
t
t
t
BSD
Tw
DACD
RSD
t
RDYS
Twe
t
RDYH
Rev.1.00 Jan. 10, 2008 Page 1577 of 1658
t
RDS
T2
t
RDYH
t
t
WEDF
DACDF
t
WDD
t
t
t
t
t
CSD
AD
RSD
RWD
t
DACD
DACD
32. Electrical Characteristics
t
RDH
REJ09B0261-0100