参数资料
型号: MC68HC05C8AMFB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
封装: QFP-44
文件页数: 12/116页
文件大小: 781K
代理商: MC68HC05C8AMFB
MC68HC05C8A MC68HCL05C8A MC68HSC05C8A Data Sheet, Rev. 5.1
Freescale Semiconductor
109
B.4 4.5-V to 5.5-V Control Timing
The data in 13.8 5.0-V Control Timing applies to the MC68HSC05C8A with the exceptions given here.
Characteristic
Symbol
Min
Max
Unit
Oscillator frequency
Crystal
External Clock
fOSC
dc
8.2
MHz
Internal operating frequency (fOSC ÷ 2)
Crystal
External clock
fOP
dc
4.1
MHz
Cycle time
tCYC
244
ns
Crystal oscillator startup time
tOXOV
100
ms
Stop recovery startup time
tILCH
100
ms
RESET pulse width
tRL
1.5
tCYC
Timer
Resolution(1)
Input capture pulse width
1. Because a 2-bit prescaler in the timer must count four internal cycles (
tCYC), this is the limiting minimum factor in
determining the timer resolution.
tRESL
tTH or tTL
tTHTL
4.0
64
(2)
2. The minimum period tTLTL should not be less than the number of cycle times it takes to execute the capture interrupt service
routine plus 24
tCYC.
tCYC
ns
tCYC
Interrupt pulse width low (edge-triggered)
tILIH
64
ns
Interrupt pulse period
tILIL
(3)
3. The minimum tILIL should not be less than the number of cycle times it takes to execute the interrupt service routine plus
19
tCYC.
tCYC
OSC1 pulse width
tOH or tOL
50
ns
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