参数资料
型号: MC68HC05C12ACFB
厂商: MOTOROLA 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: 28/156页
文件大小: 756K
代理商: MC68HC05C12ACFB
Electrical Specifications
3.3 V Control Timing
MC68HC05C12A Rev. 3.0
General Release Specification
MOTOROLA
Electrical Specifications
123
NON-DISCLOSURE
AGREEMENT
REQUIRED
13.10 3.3 V Control Timing
Figure 13-4. TCAP Timing Relationships
Characteristic(1)
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
t
CYC
Timer
Resolution(2)
Input Capture Pulse Width
Input Capture Pulse Period
tRESL
tTH, tTL
tTLTL
4.0
250
Note(3)
tcyc
ns
tcyc
Interrupt Pulse Width Low (Edge-Triggered)
tILIH
250
ns
Interrupt Pulse Period
tILIL
Note(4)
—tcyc
OSC1 Pulse Width
tOH,tOL
200
ns
NOTES:
1.
VDD = 3.3 Vdc ± 0.3 Vdc, VSS = 0 Vdc, TA = –40 °C to +85 °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
TCAP PIN
tTH
tTL
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