参数资料
型号: MC68HC05C4ACB
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, PDIP42
封装: SHRINK, PLASTIC, DIP-42
文件页数: 28/156页
文件大小: 992K
代理商: MC68HC05C4ACB
Electrical Specifications
3.3 V Control Timing
MC68HC05C4A Rev. 4.0
General Release Specification
Electrical Specifications
123
NON-DISCLOSURE
AGREEMENT
REQUIRED
13.10 3.3 V Control Timing
Figure 13-4. TCAP Timing Relationships
Characteristic
Symbol
Min
Max
Unit
Oscillator Frequency
Crystal
External Clock
fosc
dc
2.0
MHz
Internal Operating Frequency
Crystal
External Clock
fop
dc
1.0
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 (Note 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 tkes 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.
t
TLTL
*
TCAP PIN
t
TH
*
t
TL
*
*Refer to timer resolution data in Section 8. Timer.
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