參數(shù)資料
型號: MC68HSC05C8FB
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數(shù): 56/156頁
文件大小: 1755K
代理商: MC68HSC05C8FB
MC68HSC05C8A
4.5-V to 5.5-V Control Timing
MC68HC05C8A — Rev. 4.0
Advance Information
MOTOROLA
MC68HSC05C8A
149
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
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
tRESL
tTH or tTL
tTHTL
4.0
64
(2)
tCYC
ns
tCYC
Interrupt pulse width low (edge-triggered)
tILIH
64
ns
Interrupt pulse period
tILIL
(3)
tCYC
OSC1 pulse width
tOH or tOL
50
ns
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.
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.
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.
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