SH7014 Datasheet, PDF (608/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

22. Electrical Characteristics (5 V 28.7 MHz)
Tp Tpw Tr Trw Tc1 Tcw1 Tcw2 Tcw3 Tc2
CK
A21 to A0
RAS
CASx
(During read)
RDWR
(During read)
D15 to D0
(During read)
CASx
(During write)
RDWR
(During write)
D15 to D0
(During write)
DACKn
RD
(During read)
WRx
(During write)
t_AD
t_AD
Row address
t_RASD1
t_ASR
t_RAH
t_RP
Column address
t_RASD2
t_CASD1
t_CASD2
t_AA
t_RAC
t_CAC
t_CASD1
t_RWD1
t_DS
t_DH
t_WDD
t_DACKD1
t_RSD1
t_WSD1
t_RDS
t_RDH
t_CASD2
t_RWD2
t_WDH
t_DACKD1
t_RSD2
t_WSD2
Note: t_RDH is specified from the first negate timing for A21 to A0, RAS, and CAS.
Figure 22.12 DRAM Cycle (Normal Mode, 3 Waits, TPC = 1, RCD = 1)
Rev.5.00 Sep. 27, 2007 Page 574 of 716
REJ09B0398-0500