參數(shù)資料
型號: MC68HC05C9ECFB
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數(shù): 30/144頁
文件大?。?/td> 1628K
代理商: MC68HC05C9ECFB
Electrical Specifications
Control Timing
MC68HC05C9E
Advance Information
MOTOROLA
Electrical Specifications
125
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12.7 Control Timing
Figure 12-4. TCAP Timing Relationships
Characteristic(1)
Symbol
Min
Max
Unit
Frequency of operation
Crystal
External clock
fOSC
dc
2.1
MHz
Internal operating frequency (fOSC ÷ 2)
Crystal
External clock
fOP
dc
2.1
MHz
Cycle time
tcyc
480
ns
Crystal oscillator startup time
tOXOV
100
ms
Stop recovery startup time (crystal oscillator)
tILCH
100
ms
RESET pulse width
tRL
1.5
tcyc
Timer
Resolution(2)
Input capture pulse width
Input capture pulse period
tRESL
tTH, tTL
tTLTL
4.0
125
(3)
tcyc
ns
tcyc
Interrupt pulse width low (edge-triggered)
tILIH
125
ns
Interrupt pulse period
tILIL
(4)
tcyc
OSC1 pulse width
tOH, tOL
90
ns
1. VDD = 5.0 Vdc ± 10%, VSS = 0 Vdc, TA = –40 to +105°C, unless otherwise noted
2. 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.
3. 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.
4. The minimum tILIL should not be less than the number of cycle times it takes to execute the interrupt service routine plus
19 tCYC.
tTLTL
(1)
TCAP PIN
tTH
(1)
tTL
(1)
1. Refer to timer resolution data in 12.7 Control Timing.
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