E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 205
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E62655RUSB
Manufacturer Part Number
E62655RUSB
Description
EMULATOR BASE H8S/2655R W/USB
Manufacturer
Renesas Electronics America
Type
Microcontrollerr
Datasheet
1.E62655RUSB.pdf
(1093 pages)
Specifications of E62655RUSB
Contents
E6000 Emulator Unit and 4 Logic Probes
For Use With/related Products
H8S/2655R
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
- Current page: 205 of 1093
- Download datasheet (6Mb)
6.5.7
When DRAM is accessed, RAS precharging time must be secured. With the H8S/2655 Group, one
T
setting the TPC bit in MCR to 1. Set the appropriate number of T
connected and the operating frequency of the H8S/2655 Group. Figure 6.16 shows the timing
when two T
When the TCP bit is set to 1, two T
p
state is always inserted when DRAM space is accessed. This can be changed to two T
Note: n = 2 to 5
Read
Write
Precharge State Control
p
HWR, LWR
HWR, LWR
CS
(UWE, LWE)
states are inserted.
(UWE, LWE)
D
D
A
Figure 6.16 Timing with Two Precharge States (2-WE System)
n
15
23
15
(RAS)
to D
to D
to A
CAS
0
0
0
T
p1
p
states are also used for refresh cycles.
T
p2
Rev. 5.00 Sep 14, 2006 page 175 of 1060
Row
T
r
p
cycles according to the DRAM
T
Column
c1
Section 6 Bus Controller
REJ09B0331-0500
T
c2
p
states by
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