Datasheet

Section 26 Electrical Characteristics
R01UH0309EJ0500 Rev. 5.00 Page 1341 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
Tp
t
AD2
φ
SDRAMφ
Address bus
Data bus
RAS
RAS
CAS
CAS
WE
WE
CKE
CKE
Precharge-sel
DQMU,
DQML
Data bus
DQMU,
DQML
Tr Tc1 Tw
Tc2
Write
Read
t
CSD4
t
DQMD
t
RDS3
t
RDH3
t
CSD4
t
CSD4
t
CSD4
t
CSD4
t
CSD4
t
CSD4
t
CSD4
t
DQMD
t
CSD4
t
CSD4
t
CSD4
t
CSD4
t
DQMD
t
DQMD
t
WDD
t
WDH4
t
CSD4
t
CSD4
High
High
Figure 26.26 Synchronous DRAM Basic Access Timing (CAS Latency 2)