HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 566

• Manufacturer Part Number: HD6417034B
• Description: 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 20 Electrical Characteristics
Rev. 7.00 Jan 31, 2006 page 540 of 658
REJ09B0272-0700
Notes: 1. For t
WRH, WRL,
WRH, WRL,
AD15–AD0
AD15–AD0
RD(Write)
WR(Write)
DPH, DPL
DPH, DPL
WR(Read)
RD(Read)
A21–A0
DACK0
DACK1
DACK0
DACK1
(Read)
(Read)
(Write)
(Write)
(Write)
RAS
CAS
2. For t
3. For t
4. t
CK
t
cyc
RDH
– t
Figure 20.55 DRAM Bus Cycle (Short-Pitch, Normal Mode)
CAC1
ACC1
RAC1
is measured from A21–A0, RAS, or CAS, whichever is negated first.
AD
, use t
, use t
, use t
– t
ASC
cyc
cyc
cyc
– t
T
p
RDS
– 30 instead of t
0.65 – 19 (for 35% duty) or t
1.5 – 20 instead of t
.
t
AD
t
RAC1
T
cyc
r
t
*3
RASD1
t
WPDD2
– t
Row
cyc
AD
t
RAH
t
ACC1
– t
t
t
t
t
t
1.5 – t
t
WSD3
WDD2
RDD
DACD4
AD
RDS
ASC
t
CAC1
*2
cyc
.
RASD1
T
*1
0.5 – 19 (for 50% duty) instead of
c
t
t
DACD1
DACD5
Column
t
WCS
t
DS
– t
t
WCH
RDS
t
t
t
t
t
RDS
t
t
t
WPDH
DACD2
RASD2
CASD1
WSD4
WDH
RSD
.
t
RDH
*4