参数资料
型号: MC68HC705CT4FB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 2.048 MHz, MICROCONTROLLER, PQFP44
封装: QFP-44
文件页数: 93/152页
文件大小: 964K
代理商: MC68HC705CT4FB
MC68HC705CT4 Rev. 2.0
General Release Specification
MOTOROLA
Resets
45
Resets
External Reset (RESET)
NON-DISCLOSURE
AGREEMENT
REQUIRED
PCH
PCL
OSC1
2
RESET
INTERNAL
PROCESSOR
INTERNAL
ADDRESS
BUS
1
1FFE
1FFF
V
DD
4064
t
CYC
t CYC
t RL
INTERNAL
DATA
BUS
1
1FFE
NEW
1FFF
NOTES:
1.
Internal
timing
signal
and
bus
information
not
available
externally
2.
OSC1
line
is
not
meant
to
represent
frequency.
It
is
only
used
to
represent
time.
3.
The
next
rising
edge
of
the
internal
processor
clock
following
the
rising
edge
of
RESET
initiates
the
reset
sequence.
4.
V
DD
must
fall
to
a
level
lower
than
V
POR
to
be
recognized
as
a
power-on
reset.
3
NEW
OP
CODE
PCL
PCH
NEW
OP
CODE
NEW
CLOCK
1
0
V
>
V
POR
4
Figure
5-2.
RESET
and
POR
Timing
Diagram
PC
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
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