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MC68HC705P9 Datasheet, PDF (141/156 Pages) Motorola, Inc – HCMOS Microcontroller Unit　
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3.3 V Control Timing
Specifications
3.3 V Control Timing
Table 7. Control Timing (VDD = 3.3 Vdc)(1)
Characteristic
Symbol Min Max Unit
Oscillator Frequency
Crystal
External Clock
fOSC
— 2.0 MHz
dc 2.0
Internal Operating Frequency (fOSC ÷ 2)
Crystal
External Clock
fOP
— 1.0 MHz
dc 1.0
Cycle Time (1 ÷ fOP)
Crystal Oscillator Startup Time
Stop Recovery Startup Time (Crystal
Oscillator)
tCYC
tOXOV
tILCH
1
— ms
— 100 ms
— 100 ms
RESET Pulse Width
tRL
1.5
—
tCYC
Timer
Resolution(2)
Input Capture Pulse Width
Input Capture Pulse Period
tRESL
4.0
—
tCYC
tH, tL
tTLTL
250 — ns
Note(3) — tCYC
Interrupt Pulse Width Low (Edge-Triggered)
Interrupt Pulse Period
tILIH
250 — ns
tILIL
Note(4) — tCYC
OSC1 Pulse Width
tOH, tOL
200
— ns
1. VDD = 3.3 Vdc ±10%, VSS = 0 Vdc, TA = TL to TH unless otherwise noted
2. A 2-bit prescaler in the timer is the limiting factor as it counts 4 tCYC
3. The minimum tTLTL should not be less than the number of interrupt service routine cycles
plus 19 tCYC
4. The minimum tILIL should not be less than the number of interrupt service routine cycles
plus 19 tCYC
11-mc68hc705p9
MOTOROLA
Specifications
141
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