參數(shù)資料
型號: MC68HC05C8A
廠商: Motorola, Inc.
英文描述: Microcontrollers
中文描述: 微控制器
文件頁數(shù): 151/158頁
文件大?。?/td> 773K
代理商: MC68HC05C8A
MC68HSC05C8A
4.5-V to 5.5-V Control Timing
MC68HC05C8A
MC68HCL05C8A
MC68HSC05C8A
Rev. 5.0
Technical Data
MOTOROLA
MC68HSC05C8A
151
B.5 4.5-V to 5.5-V Control Timing
The data in
13.9 5.0-V Control Timing
applies to the MC68HSC05C8A
with the exceptions given here.
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 deter-
mining the timer resolution.
2. 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
t
CYC
.
3. 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
.
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