r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 320

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 6 Bus Controller (BSC)
DRAM space read
External address space write
DRAM space read
T
T
T
T
T
T
T
T
T
T
p
r
c1
c2
i
1
2
3
c1
c2
φ
Address bus
RD
HWR, LWR
RAS
UCAS, LCAS
Data bus
Idle cycle
Figure 6.89 Example of Idle Cycle Operation after DRAM Access
(Write after Read) (IDLC = 0, RAST = 0, CAST = 0)
Rev. 1.00 Sep. 19, 2008 Page 290 of 1342
REJ09B0467-0100