mc68hc705c4acfn Freescale Semiconductor, Inc, mc68hc705c4acfn Datasheet - Page 176

• Manufacturer Part Number: mc68hc705c4acfn
• Description: M68hc05 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Electrical Specifications
13.10 3.3-Volt Control Timing
Technical Data
176
Frequency of operation
Internal operating frequency
Cycle time (see
Crystal oscillator startup time (see
Stop recovery startup time (crystal oscillator)
RESET pulse width, excluding power-up
Timer
Interrupt pulse width low (edge-triggered)
Interrupt pulse period
OSC1 pulse width
1. V
2. Since a 2-bit prescaler in the timer must count four internal cycles (t
3. The minimum period, t
4. The minimum period, t
Crystal option
External clock option
Crystal (f
External clock (f
(see
(see
Resolution
Input capture pulse width (see
Input capture pulse period (see
(see
(see
the timer resolution.
vice routine plus 24 t
plus 19 t
DD
*
= 3.3 Vdc
Refer to timer resolution data in
Figure
Figure
Figure 4-2. External Interrupt
Figure 4-2. External Interrupt
EXTERNAL SIGNAL
CYC
OSC
(TCAP PIN 37)
(2)
.
13-6)
13-7)
Figure
2)
0.3 Vdc, V
OSC
Characteristic
CYC
ILIL
TLTL
13-7)
2)
.
, should not be less than the number of cycle times it takes to execute the interrupt service routine
, should not be less than the number of cycle times it takes to execute the capture interrupt ser-
SS
= 0 Vdc; T
Figure
Figure
Figure
Figure 13-5. Timer Relationships
(1)
Figure 13-6
t
TLTL
Timing)
Timing)
A
*
13-5)
= T
13-5)
13-7)
L
Electrical Specifications
to T
and
H
Figure
13-7.
Symbol
MC68HC705C4A • MC68HSC705C4A — Rev. 3.0
t
CYC
t
OH
t
TH
t
t
t
f
t
OXOV
RESL
t
ILCH
TLTL
t
OSC
f
CYC
t
ILIH
ILIL
OP
RL
, t
, t
t
), this is the limiting minimum factor in determining
TH
TL
OL
*
1000
Min
250
250
200
4.0
—
dc
—
dc
—
—
(3)
(4)
8
t
TL
*
Max
100
100
2.0
2.0
1.0
1.0
—
—
—
—
—
—
—
—
MOTOROLA
MHz
MHz
Unit
t
t
t
t
CYC
CYC
CYC
CYC
ms
ms
ns
ns
ns
ns