r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 288

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

Section 6 Bus Controller (BSC)
Rev. 1.00 Sep. 19, 2008 Page 258 of 1342
REJ09B0467-0100
Upper data bus
Lower data bus
Precharge-sel
Address bus
SDRAMφ
DQMU
DQML
CKE
RAS
CAS
WE
φ
Figure 6.62 DQMU and DQML Control Timing
Column address
(Lower Byte Read Access: CAS Latency 2)
PALL
T
p
Row address
Row address
ACTV
T
r
READ
High
High
T
c1
Column address
T
cl
NOP
High impedance
T
c2