r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1612

• 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 1582 of 1658
REJ09B0261-0100
Figure 32.16 Burst ROM Bus Cycle (One Internal Wait Cycle + One External Wait Cycle)
CLKOUT
A25 to A5
A4 to A0
CSn
RD/WR
RD
D31 to D0
(Read)
BS
RDY
DACKn
(SA: IO ← memory)
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
T1
t
t
t
t
DACD
AD
DACD
RSD
CSD
RWD
BSD
t
RDYS
t
t
Tw
t
RSD
BSD
DACD
t
RDYS
Twe
t
RDYH
t
RDS
TB2
t
RDYH
TB1
t
AD
t
DACD
t
RDH
Twb
Twbe
TB2
TB1
Twb
Twbe
TB2
TB1
t
BSD
t
RDYS
Twb
t
BSD
t
RDYS
Twbe
t
RDYH
t
RDS
T2
t
DACD
t
RDYH
t
t
t
t
AD
CSD
RWD
RSD
t
RDH