h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 190
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h8s-2158
Manufacturer Part Number
h8s-2158
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2158.pdf
(927 pages)
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Section 6 Bus Controller
6.7.2
Table 6.10 shows the data buses used and valid strobes.
Table 6.10 Data Buses Used and Valid Strobes
Notes: Undefined: Undefined data is output.
6.7.3
The memory card interface is basically specified as having 3 access states. Figure 6.17 shows the
access timing in memory card mode. The strobe signal waveform for the rising edge and falling
edge at address output can be moved one state by setting the OWEAC and OWENC bits in BCR,
respectively. In this case, wait states must be inserted. For 2-state access, clear both the OWEAC
and OWENC bits to 0. In addition, note that in 3-state access, set the OWEAC and OWENC bits
to B'01 or B'10. Figure 6.18 shows the access timing in memory card mode when the OWEAC and
OWENC bits are set to 1 simultaneously.
Rev. 3.00 Jan 25, 2006 page 138 of 872
REJ09B0286-0300
Access
Size
Byte
Word
Invalid: Input state with the input value ignored.
Basic Operation Timing
Valid Strobes
Read/
Write
Read
Write
Read
Write
Address
Even
Odd
Even
Odd
—
—
C C C C PCS1
Pin
L
L
L
L
L
L
PCS1
PCS1
PCS1
CPCS2
CPCS2
Pin
H
H
H
H
L
L
CPCS2
CPCS2
Valid
Strobe
CPOE
CPWE
CPOE
CPWE
Upper Data Bus
(D15 to D8)
Invalid
Invalid
Undefined
Undefined
Valid (odd data)
Valid (odd data)
Lower Data
Bus (D7 to D0)
Valid
(even data)
Valid
(odd data)
Valid
(even data)
Valid
(even data)
Valid
(even data)
Valid
(even data)
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