參數(shù)資料
型號: MC68HSC05C8A
廠商: Motorola, Inc.
英文描述: 8-Bit Microcontroller Units (MCU).(8位微控制器)
中文描述: 8位微控制器單元(MCU)。(8位微控制器)
文件頁數(shù): 148/156頁
文件大小: 755K
代理商: MC68HSC05C8A
L
G
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MC68HSC05C8A
General Release Specification
MC68HC05C8A
Rev. 3.0
148
MC68HSC05C8A
MOTOROLA
B.5 4.5–5.5 V Control Timing
The data in
13.9 5.0 V Control Timing
applies to the MC68HSC05C8A
with the exceptions given in the following table.
Characteristic
Symbol
Min
Max
Unit
Oscillator Frequency
Crystal
External Clock
f
OSC
dc
8.2
8.2
MHz
Internal Operating Frequency (f
OSC
÷
2)
Crystal
External Clock
f
OP
dc
4.1
4.1
MHz
Cycle Time
t
cyc
244
ns
Crystal Oscillator Startup Time
t
OXOV
100
ms
Stop Recovery Startup Time
t
ILCH
100
ms
RESET Pulse Width
t
RL
1.5
t
CYC
Timer
Resolution
(1)
Input Capture Pulse Width
Input Capture Pulse Width
t
RESL
t
TH
or t
TL
t
THTL
4.0
64
(2)
t
cyc
ns
t
cyc
Interrupt Pulse Width Low (Edge-Triggered)
t
ILIH
64
ns
Interrupt Pulse Period
t
ILIL
(3)
t
cyc
OSC1 Pulse Width
t
OH
or t
OL
50
ns
1.
Because a 2-bit prescaler in the timer must count four internal cycles (
t
cyc
), this is the limiting minimum factor in
determining the timer resolution.
The minimum period t
TLTL
should not be less than the number of cycle times it takes to execute the capture interrupt
service routine plus 24
cyc
.
The minimum t
ILIL
should not be less than the number of cycle times it takes to execute the interrupt service routine
plus 19
t
cyc
.
2.
3.
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