188
Chapter 5
Memory Access Control Function (
μ
PD70F3187 only)
User’s Manual U16580EE3V1UD00
Figure 5-2:
SRAM, External ROM, External I/O Access Timing (5/8)
(e) Write
Notes: 1.
CSn output levels depend on the accessed area when enabled by BCT0 and BCT1
registers.
2.
BEN0 to BEN3 output levels depend on the accessed type (byte, half-word, or word) and
the external bus size (8, 16, or 32 bits) specified by the BSC register
Remarks: 1.
n = 0, 1, 3, 4
2.
Bus clock = f
XX
/2
3.
The circle indicates the sampling timing.
4.
The dashed line indicates the high impedance state.
Bus clock
A0 to A21
(output)
CSn (output)
RD (output)
WR (output)
T1
T2
T1
TW
T2
H
Address
Note 1
Address
D0 to D31
(input)
BEN0
BEN3
to
(output)
WAIT (input)
without data wait insertion
with data wait insertion
Note 2
Data
Data
Note 2
Note 1
Содержание V850E/PH2
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Страница 192: ...192 Chapter 5 Memory Access Control Function PD70F3187 only User s Manual U16580EE3V1UD00 MEMO...
Страница 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO...
Страница 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00...
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Страница 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO...
Страница 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO...
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Страница 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO...
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