r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 1248

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 26 Electrical Characteristics
Rev. 1.00 Sep. 19, 2008 Page 1220 of 1270
REJ09B0466-0100
Read
Write
Note: DACK and EDACK timing: when DDS = 0 and EDDS = 0
EDACK2, EDACK3
DACK0, DACK1
φ
A23 to A0
RAS5 to RAS2
UCAS
LCAS
OE, RD
HWR
D15 to D0
OE, RD
HWR
D15 to D0
AS
RAS timing: when RAST = 0
Figure 26.15 DRAM Access Timing: Two-State Access
t
AD
Tp
t
t
AS3
PCH2
Tr
t
CSD2
t
t
t
DACD1
EDACD1
AH1
t
t
AD
t
WRD2
WDD
Tc1
t
t
t
t
AS2
OED1/
OED1B
AC4
t
WDS1
t
WCS1
t
AA3
t
t
WCH1
CASD1
t
AC1
Tc2
t
WDH2
t
CASW1
t
AH2
t
RDS2
t
WRD2
t
RDH2
t
t
OED1/
OED1B
t
t
t
DACD2
EDACD2
CASD1
t
CSD3