HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 279

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Bit
8
7
6, 5
4
3
2
1
0
Bit Name
A3CL1
A3CL0

TRWL1
TRWL0

TRC1
TRC0
Initial
Value
1
0
All 0
0
0
0
0
0
R/W Description
R/W
R/W
R
R/W
R/W
R
R/W
R/W
CAS Latency
Specify the CAS latency.
00: 1 cycle
01: 2 cycles
10: 3 cycles
11: 4 cycles
Reserved
These bits are always read as 0. The write value should
always be 0. If 1 is written to these bits, correct operation
cannot be guaranteed.
Number of Cycles from WRITA/WRIT Command to Auto-
precharge/PRE Command
Specifies the number of cycles from issuing WRITA/WRIT
command to the start of auto-precharge or to issuing PRE
command.
00: 0 cycles
01: 1 cycle
10: 2 cycles
11: 3 cycles
Reserved
This bit is always read as 0. The write value should always
be 0. If 1 is written to this bit, correct operation cannot be
guaranteed.
Number of Cycles from REF Command/Self-refresh Release
to ACTV Command
Specify the number of cycles from issuing the REF command
or releasing self-refresh to issuing the ACTV command..
00: 3 cycles
01: 4 cycles
10: 6 cycles
11: 9 cycles
Rev. 1.00, 02/04, page 241 of 804