r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 242
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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Section 6 Bus Controller (BSC)
6.6.8
In the address/data multiplexed I/O interface, extension cycles can be inserted before and after the
data cycle. For details, see section 6.5.6, Extension of Chip Select (CS) Assertion Period. Figure
6.31 shows an example of the timing when the chip select assertion period is extended in the data
cycle.
Rev. 1.00 Sep. 19, 2008 Page 214 of 1270
REJ09B0466-0100
Read
Write
Figure 6.31 Example of Timing when Chip Select Assertion Period Is Extended
Notes: 1. n = 6, 7
Address bus
Extension of Chip Select (CS) Assertion Period in Data Cycle
D15 to D8
D15 to D8
D7 to D0
D7 to D0
2. When RDNn = 0
HWR
LWR
CSn
RD
AH
φ
Tma1
Address cycle
Address
Address
Address
Address
Tma2
in Data Cycle
Th
T1
Data cycle
Write data
Write data
T2
Read
Read
data
data
Tt
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