
Electrical Specifications
Technical Data
MC68HC08AB16A
—
Rev. 2.0
370
Electrical Specifications
MOTOROLA
23.8 5.0-V Control Timing
23.9 Timer Interface Module Characteristics
Characteristic
(1)
Notes
:
1. V
DD
= 5.0 Vdc
±
10%, V
SS
= 0 Vdc, T
A
= T
L
to T
H
, unless otherwise noted
2. See
23.12 Clock Generation Module Characteristics
for more information.
3. No more than 10% duty cycle deviation from 50%
4. Some modules may require a minimum frequency greater than dc for proper operation.
See appropriate table for this information.
5. Some modules may require a minimum frequency greater than dc for proper operation.
See appropriate table for this information.
6. Minimum pulse width reset is guaranteed to be recognized. It is possible for a smaller pulse
width to cause a reset.
7. Minimum pulse width is for guaranteed interrupt. It is possible for a smaller pulse width to
be recognized.
8. Minimum pulse width is for guaranteed interrupt. It is possible for a smaller pulse width to
be recognized. The minimum period, t
ILIL
or t
TLTL
, should not be less than the number of
cycles it takes to execute the interrupt service routine plus TBD t
cyc
.
9. The minimum period, t
ILIL
or t
TLTL
, should not be less than the number of cycles it takes to
execute the interrupt service routine plus TBD t
cyc
.
Symbol
Min
Max
Unit
Frequency of operation
Crystal option
(2)
External clock option
(3)
f
OSC
1
dc
(4)
8.4
33.6
MHz
MHz
Internal operating frequency
f
BUS
Note
(5)
8.4
MHz
RESET input pulse width low
(6)
t
IRL
1.5
—
t
cyc
IRQ interrupt pulse width low
(7)
(Edge-triggered)
t
ILIH
1.5
—
t
cyc
IRQ interrupt pulse period
t
ILIL
Note
(8)
—
t
cyc
16-bit timer
Input capture pulse width
Input capture period
t
TH,
t
TL
t
TLTL
2
Note
(9)
—
—
t
cyc
t
cyc
Characteristic
Symbol
Min
Max
Unit
Input capture pulse width
t
TIH
, t
TIL
125
—
ns
Input clock pulse width
t
TCH
, t
TCL
(1/f
BUS
)+5
—
ns