AMIS14055
J1850 8-Bit 68HC05 Microcontroller
9.0 Control Timing
V
DD
= 5V
DC
±10%, V
SS
= 0V
DC
, T
A
= -40°C to 125°C Unless Otherwise Specified
Parameter
Frequency Of Operation
Crystal Option
External Clock Option
Internal Operating Frequency
Crystal (f
OSC
+2)
External Clock (f
OSC
+2)
Cycle Time
Crystal Oscillator Start-up Time for AT-cut Crystal
Stop Recovery Start-up Time (AT-cut Crystal
Oscillator)
RESET Pulse Width
Timer
Resolution (Note 1)
Input Capture Pulse Width
Input Capture Pulse Period
Interrupt Pulse Width Low (Edge-Triggered)
OSC1 Pulse Width
Slow Clock Detect Frequency Range
Symbol
Conditions
Min
Typ
Max
Units
f
OSC
f
OSC
f
OP
f
OP
t
CYC
t
OXOV
t
ILCH
t
RL
R
ES
t
TH
, t
TL
t
TL
, t
TL
t
ILIH
t
OH
, t
OL
f
SLOW
1
1
0.5
0.5
200
-
-
1.5
4
50
(Note 2)
50
35
20
-
-
-
-
-
-
-
-
-
-
-
-
-
50
10
10
5
5
-
100
100
-
-
-
-
-
-
200
MHz
MHz
MHz
MHz
ns
ms
ms
t
CYC
t
CYC
ns
t
CYC
ns
ns
KHz
NOTES:
1. Since a 2-bit prescaler in the timer must count four internal cycles (t
CYC
), this is the limiting minimum factor in determining the timer resolution.
2. The minimum period t
TLTL
should not be less than the number of cycle times it takes to execute the capture interrupt service routine plus 24 t
CYC
.
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