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| MC68HC08GP32A Datasheet, PDF (249/258 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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20.15 Timer Interface Module Characteristics
Timer Interface Module Characteristics
Characteristic
Timer input capture pulse width
Timer Input capture period
Symbol
tTH, tTL
tTLTL
Min
2
Note(1)
Max
â
â
1. The minimum period is the number of cycles it takes to execute the interrupt service routine plus 1 tCYC.
Unit
tCYC
tCYC
tTLTL
tTH
INPUT CAPTURE
RISING EDGE
INPUT CAPTURE
FALLING EDGE
tTLTL
tTL
INPUT CAPTURE
BOTH EDGES
tTLTL
tTH
tTL
Figure 20-19. Input Capture Timing
20.16 Clock Generation Module Characteristics
20.16.1 CGM Component Specifications
Characteristic
Crystal reference frequency
Crystal load capacitance(1)
Crystal fixed capacitance(2)
Crystal tuning capacitance(2)
Feedback bias resistor
Series resistor(3)
Symbol
Min
Typ
fXCLK
30
32.768
CL
â
12.5
C1
â
15
C2
â
15
RB
1
10
RS
100
330
1. Crystal manufacturer value.
2. Capacitor on OSC1 pin. Does not include parasitic capacitance due to package, pin, and board.
3. Capacitor on OSC2 pin. Does not include parasitic capacitance due to package, pin, and board.
Max
Unit
100
kHz
â
pF
â
pF
â
pF
22
Mâ¦
470
kâ¦
MC68HC08GP32A ⢠MC68HC08GP16A Data Sheet, Rev. 1.0
Freescale Semiconductor
249
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