HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 272

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

• CS4WCR
Rev. 1.00, 02/04, page 234 of 804
Bit
6
5 to 0
Bit
31 to 21
20
19
Bit Name
WM

Bit Name

BAS

Initial
Value R/W Description
0
All 0
Initial
Value R/W Description
All 0
0
0
R/W External Wait Mask Specification
R
R
R/W Byte-Selection SRAM Byte Access Selection
R
Specify whether or not the external wait input is valid. The
specification by this bit is valid even when the number of
access wait cycle is 0.
0: External wait input is valid
1: External wait input is ignored
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.
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.
Specifies the WEn and RD/WR signal timing when the byte-
selection SRAM interface is used.
0: Asserts the WEn signal at the read timing and asserts the
1: Asserts the WEn signal during the read access cycle and
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.
RD/WR signal during the write access cycle.
asserts the RD/WR signal at the write timing.