參數(shù)資料
型號: MC68HC05C8FB
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): 32/156頁
文件大?。?/td> 1755K
代理商: MC68HC05C8FB
Electrical Specifications
3.3-V Control Timing
MC68HC05C8A — Rev. 4.0
Advance Information
MOTOROLA
Electrical Specifications
127
13.10 3.3-V Control Timing
Figure 13-4. TCAP Timing Relationships
Characteristic(1)
1. VDD = 3.3 Vdc ± 0.3 Vdc, VSS = 0 Vdc, TA = –40°C to +125°C, unless otherwise noted.
Symbol
Min
Max
Unit
Oscillator frequency
Crystal
External clock
fOSC
dc
2.0
MHz
Internal operating frequency
Crystal
External clock
fOP
dc
1.00
MHz
Internal clock cycle time
tCYC
1000
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
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.
tRESL
tTH, tTL
tTLTL
4.0
250
Note(3)
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.
tCYC
ns
tCYC
Interrupt pulse width low (edge-triggered)
tILIH
250
ns
Interrupt pulse period
tILIL
Note(4)
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.
tCYC
OSC1 pulse width
tOH, tOL
200
ns
tTLTL
TCAP PIN
tTH
tTL
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