MC68HC908AP16CFA MOTOROLA [Motorola, Inc], MC68HC908AP16CFA Datasheet - Page 419

• Manufacturer Part Number: MC68HC908AP16CFA
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

24.6 5V Control Timing
24.7 5V Oscillator Characteristics
MC68HC908AP Family — Rev. 2.5
MOTOROLA
Notes:
Notes:
Internal operating frequency
RST input pulse width low
Internal oscillator clock frequency
External reference clock to OSC1
Crystal reference frequency
Crystal load capacitance
Crystal fixed capacitance
Crystal tuning capacitance
Feedback bias resistor
Series resistor
External RC clock frequency
RC oscillator external R
RC oscillator external C
1. V
2. Some modules may require a minimum frequency greater than dc for proper operation; see appropriate table for this
3. Minimum pulse width reset is guaranteed to be recognized. It is possible for a smaller pulse width to cause a reset.
1. The oscillator circuit operates at V
2. Typical value reflect average measurements at midpoint of voltage range, 25 °C only.
3. No more than 10% duty cycle deviation from 50%. The max. frequency is limited by an EMC filter.
4. Fundamental mode crystals only.
5. Consult crystal vendor data sheet.
information.
DD
= 4.5 to 5.5 Vdc, V
Characteristic
(5)
Characteristic
SS
(5)
(5)
(3)
= 0 Vdc; timing shown with respect to 20% V
(5)
(4)
(2)
Table 24-6. Oscillator Specifications (5V)
(1)
Freescale Semiconductor, Inc.
REG
For More Information On This Product,
(3)
Table 24-5. Control Timing (5V)
.
(1)
Go to: www.freescale.com
f
Symbol
XTALCLK
f
RCCLK
R
C
f
f
ICLK
OSC
R
R
C
C
C
EXT
EXT
B
S
L
1
2
Symbol
Min
16k
dc
—
—
—
—
—
—
DD
f
t
IRL
OP
and 70% V
See
Figure 24-1
100kΩ
10MΩ
22k
2 × C
2 × C
Typ
32k
10
—
DD
Min
750
—
(2)
, unless otherwise noted.
L
L
Electrical Specifications
7.6M
Max
16M
26k
—
—
—
—
—
—
Max
—
8
5V Control Timing
Data Sheet
Unit
MHz
Unit
Hz
Hz
Hz
Hz
pF
Ω
ns
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