r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 223
r4f2426
Manufacturer Part Number
r4f2426
Description
16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R4F2426.pdf
(1302 pages)
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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 even addresses, and the
lower half (D7 to D0) for odd addresses. Wait states can be inserted.
Notes: 1. n = 0 to 7
16-Bit, 3-State Access Space
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
Rev. 1.00 Sep. 19, 2008 Page 195 of 1270
Section 6 Bus Controller (BSC)
T
3
Invalid
Valid
REJ09B0466-0100
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