r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 1321

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

Read
Write
EDACK2, EDACK3
DACK0, DACK1
Note:
Figure 27.18 DRAM Access Timing: Three-State Access (RAST = 1)
φ
A23 to A0
RAS5 to RAS2
UCAS
LCAS
OE, RD
HWR
D15 to D0
OE, RD
HWR
D15 to D0
AS
DACK and EDACK timing: when DDS = 0 and EDDS = 0
RAS timing: when RAST = 0
t
AD
Tp
t
t
PCH1
AS2
t
CSD1
Tr
t
AH2
t
t
DACD1
EDACD1
t
t
WRD2
t
AD
WDD
Tc1
t
Rev. 1.00 Sep. 19, 2008 Page 1291 of 1342
AC7
t
AS3
t
t
t
WCS2
t
OED2/
OED2B
WDS2
t
AA5
Tc2
Section 27 Electrical Characteristics
t
CASD2
t
WCH2
t
CASW2
t
AC2
t
AH3
t
WDH3
Tc3
t
RDS2
t
WRD2
t
REJ09B0467-0100
RDH2
t
t
t
CASD1
OED1/
OED1B
t
t
t
DACD2
EDACD2
CSD3