HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 289

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

9.5.2
Basic Timing: For access to a normal space, this LSI uses strobe signal output in consideration of
the fact that mainly static RAM will be directly connected. When using SRAM with a byte-
selection pin, see section 9.5.7, Byte-Selection SRAM Interface. Figure 9.3 shows the basic
timings of normal space access. A no-wait normal access is completed in two cycles. The BS
signal is asserted for one cycle to indicate the start of a bus cycle.
Normal Space Interface
Figure 9.3 Normal Space Basic Access Timing (Access Wait 0)
Note: * The waveform for DACK is when active low is specified.
Read
Write
A23 to A0
D15 to D0
RD/WR
RD/WR
DACK
CKIO
WEn
CSn
RD
BS
D
*
T1
T2
Rev. 1.00, 02/04, page 251 of 804