r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 285

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

The setting of bits TPC1 and TPC0 is also valid for T
Read
Write
Address bus
DQMU, DQML
DQMU, DQML
Precharge-sel
Figure 6.59 Example of Timing with Two-State Precharge Cycle
Data bus
Data bus
SDRAMφ
CKE
CKE
RAS
RAS
CAS
CAS
WE
WE
φ
(TPC1 = 0, TPC0 = 1, SDWCD = 0, CAS Latency 2)
PALL
PALL
T
p1
Column address
NOP
NOP
T
p2
Row address
Row address
ACTV
ACTV
High
High
T
r
p
states in refresh cycles.
Rev. 1.00 Sep. 19, 2008 Page 255 of 1342
READ
NOP
T
c1
Column address
Section 6 Bus Controller (BSC)
WRIT
T
cl
NOP
NOP
T
REJ09B0467-0100
c2