Datasheet

Section 6 Bus Controller (BSC)
Page 262 of 1408 R01UH0309EJ0500 Rev. 5.00
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
T
p
SDRAMφ
RAS
Read
CAS
WE
CKE
PALL ACTV READ NOP
DQMU, DQML
Data bus
Address bus
φ
T
r
T
c1
T
cl1
T
cl2
T
c2
Row address Column address Column address
Precharge-sel
Row address
High
RAS
Write
CAS
WE
CKE
PALL ACTV NOP NOPWRIT
DQMU, DQML
Data bus
High
Figure 6.57 CAS Latency Control Timing (SDWCD = 0, CAS Latency 3)