HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 252

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 6 Bus Controller (BSC)
16-Bit, 3-State Access Space: Figures 6.15 to 6.17 show bus timings for a 16-bit, 3-state access
space. When a 16-bit access space is accessed, the upper half (D15 to D8) of the data bus is used
for the even address, and the lower half (D7 to D0) for the odd address. Wait states can be
inserted.
Rev.7.00 Mar. 18, 2009 page 184 of 1136
REJ09B0109-0700
Notes: 1. n = 0 to 7
Read
Write
2. When RDNn = 0
φ
Address bus
CSn
AS
RD
D15 to D8
D7 to D0
HWR
LWR
D15 to D8
D7 to D0
Figure 6.15 Bus Timing for 16-Bit, 3-State Access Space
(Even Address Byte Access)
T
1
High impedance
Bus cycle
High
T
2
Valid
T
3
Invalid
Valid