mc68hc705c9a Freescale Semiconductor, Inc, mc68hc705c9a Datasheet - Page 99

• Manufacturer Part Number: mc68hc705c9a
• Description: M68hc05 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

12.8 3.3-Vdc Control Timing
Freescale Semiconductor
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. V
2. Because a 2-bit prescaler in the timer must count four internal cycles (t
3. The minimum period t
4. The minimum t
Crystal
External clock
Crystal
External clock
Resolution
Input capture pulse width
Input capture pulse period
the timer resolution.
routine plus 24 t
19 t
DD
CYC
= 3.3Vdc ± 0.3 Vdc, V
* Refer to timer resolution data in
TCAP PIN
.
(2)
ILIL
CYC
should not be less than the number of cycle times it takes to execute the interrupt service routine plus
.
TLTL
Characteristic
should not be less than the number of cycle times it takes to execute the capture interrupt service
SS
OSC
MC68HC05C9A Advance Information Data Sheet, Rev. 4.1
= 0 Vdc, T
÷ 2)
Figure 12-4. TCAP Timing Relationships
12.7 5.0-Vdc Control Timing
t
TLTL
(1)
*
A
= –40 to +85°C, unless otherwise noted
and
12.8 3.3-Vdc Control
CYC
Symbol
t
t
t
t
TH
OH
t
TH
t
t
), this is the limiting minimum factor in determining
f
t
OXOV
RESL
t
ILCH
t
OSC
f
CYC
TLTL
t
ILIH
ILIL
OP
*
RL
, t
,t
OL
TL
Timing.
1000
Min
125
250
200
DC
DC
1.5
4.0
—
—
—
—
(3)
(4)
3.3-Vdc Control Timing
Max
100
100
2.0
2.0
1.0
1.0
—
—
—
—
—
—
—
—
t
TL
*
MHz
MHz
Unit
t
t
t
t
CYC
CYC
CYC
CYC
ms
ms
ns
ns
ns
ns
99