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Flash
MCU(HMS39C7092)
BUS
Controller
49
16-Bit
Access
Areas:
Figure
3.4
shows
data
alignment
control
for
16-bit
access
areas.
With
16-bit
access
areas,
the
lower
data
bus
(
D
7
to
D
0
)
and
higher
data
bus
(
D
15
to
D
8
)
are
used
for
accesses.
The
amount
of
data
that
can
be
accessed
at
one
time
is
one
byte
or
one
half-word,
and
a
word
access
is
executed
as
two
half-word
accesses.
Figure
3.4
Access
Size
and
Data
Alignment
Control
(16-Bit
Access
Area)
nHWR
,
nLWR
signals
are
generated
according
to
the
memory
transfer
width,
external
memory
width,
A0
,
and
the
access
sequencing.
The
following
table
shows
the
basic
coding
example
assuming
16-bit
external
memory:
Table
3.3
Byte
Lane
condition
by
A0
CPU
access
Size
A0
nHWR
nLWR
Number
of
Access
Word
(32bit)
X
L
L
2
Half-word
(16-bit)
X
L
L
1
Lower
Byte
(8bit)
0
H
L
1
Upper
Byte
(8bit)
1
L
H
1
Byte
size
Half-word
size
Word
size
Lower
Byte
Lower
Byte
1st
bus
cycle
Lower
Byte
2nd
bus
cycle
Lower
Byte
Even
Address
Odd
Address
Upper
Byte
Upper
Byte
Upper
Byte
Upper
Byte
Содержание HMS39C7092
Страница 1: ...HMS39C7092 32Bit Embedded Flash MCU User s Manual Version 1 2...
Страница 11: ...Flash MCU HMS39C7092 11...
Страница 12: ...Flash MCU HMS39C7092 12...
Страница 13: ...Flash MCU HMS39C7092 Introduction 13 Chapter 1 Introduction...
Страница 27: ...Flash MCU HMS39C7092 ARM7TDMI Core 27 Chapter 2 ARM7TDMI Core...
Страница 39: ...Flash MCU HMS39C7092 ARM7TDMI Core 39 2 4 4 ARM Instructions Refer to ARM7TDMI Datasheet ARM DDI 0029E...
Страница 40: ...BUS Controller Flash MCU HMS39C7092 40...
Страница 41: ...Flash MCU HMS39C7092 BUS Controller 41 Chapter 3 BUS Controller...
Страница 59: ...Flash MCU HMS39C7092 MCU controller 59 Chapter 4 MCU Controller...
Страница 67: ...Flash MCU HMS39C7092 Power Management Unit 67 Chapter 5 Power Management Unit...
Страница 77: ...Flash MCU HMS39C7092 Interrupt controller 77 Chapter 6 The Interrupt Controller...
Страница 85: ...Flash MCU HMS39C7092 Watchdog Timer 85 Chapter 7 Watchdog Timer...
Страница 98: ...Watchdog Timer Flash MCU HMS39C7092 98...
Страница 99: ...Flash MCU HMS39C7092 General Purpose Timer 99 Chapter 8 The General Purpose Timer...
Страница 118: ...General Purpose Timer Flash MCU HMS39C7092 118...
Страница 119: ...Flash MCU HMS39C7092 UART 119 Chapter 9 UART Universal Asynchronous Receiver Transmitter...
Страница 137: ...Flash MCU HMS39C7092 GPIO 137 Chapter 10 GPIO General Purpose Input Output...
Страница 142: ...GPIO Flash MCU HMS39C7092 142...
Страница 143: ...Flash MCU HMS39C7092 On Chip SRAM 143 Chapter 11 On Chip SRAM...
Страница 145: ...Flash MCU HMS39C7092 On chip Flash memory 145 Chapter 12 On chip Flash Memory...
Страница 173: ...Flash MCU HMS39C7092 A D Converter 173 Chapter 13 A D Converter...
Страница 185: ...Flash MCU HMS39C7092 Electrical Characteristics 185...
Страница 186: ...Electrical Characteristics Flash MCU HMS39C7092 186 Chapter 14 Electrical Characteristics...
Страница 195: ...Flash MCU HMS39C7092 Electrical Characteristics 195...
Страница 196: ...Electrical Characteristics Flash MCU HMS39C7092 196...
Страница 197: ...A 1 Flash MCU HMS39C7092 197 A 1 Package Dimension...