Freescale Semiconductor, Inc.
MC68HSC705C8A
A.5 5.0-Volt High-Speed Control Timing
(1)
Symbol
Min
Max
Unit
Characteristic
Oscillator frequency
Crystal oscillator
External clock
f
—
dc
8.0
8.0
MHz
OSC
Internal operating frequency (f
÷ 2)
OSC
f
—
dc
4.0
4.0
MHz
Crystal oscillator
External clock
OP
t
Cycle time
250
65
—
—
—
—
ns
ns
ns
ns
CYC
t
, t
Input capture pulse width
TH TL
t
Interrupt pulse width low (edge-triggered)
OSC1 pulse width
65
ILIH
t
, t
45
OH OL
1. V = 5 V ± 10%; V = 0 Vdc, T = T to T , unless otherwise noted
DD
SS
A
L
H
A.6 3.3-Volt High-Speed Control Timing
(1)
Symbol
Min
Max
Unit
Characteristic
Oscillator frequency
Crystal oscillator
External clock
f
—
dc
4.0
4.0
MHz
OSC
Internal operating frequency (f
÷ 2)
OSC
f
—
dc
2.0
2.0
MHz
Crystal oscillator
External clock
OP
t
Cycle time
476
125
125
90
—
—
—
—
ns
ns
ns
ns
CYC
t
, t
Input capture pulse width
TH TL
t
Interrupt pulse width low (edge-triggered)
OSC1 pulse width
ILIH
t
, t
OH OL
1. V = 3.3 V ± 10%; V = 0 Vdc, T = T to T , unless otherwise noted
DD
SS
A
L
H
Technical Data
204
MC68HC705C8A — Rev. 3
MC68HSC705C8A
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