MC68HC705C9ACB MOTOROLA [Motorola, Inc], MC68HC705C9ACB Datasheet - Page 139

• Manufacturer Part Number: MC68HC705C9ACB
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

12.9 3.3-Vdc Control Timing
MC68HC705C9A — Rev. 4.0
MOTOROLA
Frequency of operation
Internal operating frequency (f
Cycle time
Crystal oscillator startup time
Stop recovery startup time (crystal oscillator)
RESET pulse width
Timer
Interrupt pulse width low (edge-triggered)
Interrupt pulse period
OSC1 pulse width
1.
2.
3.
4.
Crystal
External clock
Crystal
External clock
Resolution
Input capture pulse width
Input capture pulse period
V
Because a 2-bit prescaler in the timer must count four internal cycles (t
The minimum period t
The minimum t
in determining the timer resolution.
interrupt service routine plus 24 t
routine plus 19 t
DD
* Refer to timer resolution data in
= 3.3Vdc
TCAP PIN
(2)
ILIL
0.3 Vdc, V
CYC
should not be less than the number of cycle times it takes to execute the interrupt service
.
Characteristic
TLTL
SS
should not be less than the number of cycle times it takes to execute the capture
Figure 12-4. TCAP Timing Relationships
OSC
Freescale Semiconductor, Inc.
= 0 Vdc, T
For More Information On This Product,
12.8 5.0-Vdc Control Timing
t
TLTL
CYC
2)
(1)
*
.
A
Go to: www.freescale.com
= –40 to +85 C, unless otherwise noted
Electrical Specifications
and
12.9 3.3-Vdc Control
Symbol
t
t
t
TH
OH
t
t
t
t
f
OXOV
t
TH
RESL
t
t
ILCH
TLTL
OSC
f
CYC
t
ILIH
ILIL
OP
*
RL
, t
,t
OL
TL
CYC
), this is the limiting minimum factor
Timing.
1000
Min
125
250
200
DC
DC
1.5
4.0
—
—
—
—
(3)
(4)
Electrical Specifications
3.3-Vdc Control Timing
Advance Information
Max
100
100
2.0
2.0
1.0
1.0
—
—
—
—
—
—
—
—
t
TL
*
MHz
MHz
t
t
t
t
Unit
CYC
CYC
CYC
CYC
ms
ms
ns
ns
ns
ns
139