mc68hc908ld64 Freescale Semiconductor, Inc, mc68hc908ld64 Datasheet - Page 347

• Manufacturer Part Number: mc68hc908ld64
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

24.7 Control Timing
24.8 TImer Interface Module Characteristics
24.9 Oscillator Characteristics
MC68HC908LD64
Freescale Semiconductor
Notes:
Notes:
Internal operating frequency
RST input pulse width low
Input capture pulse width
Input clock pulse width
Crystal frequency
External clock
Reference frequency
Crystal fixed capacitance
Crystal tuning capacitance
Feedback bias resistor
Series resistor
1. V
2. Some modules may require a minimum frequency greater than dc for proper operation;
3. Minimum pulse width reset is guaranteed to be recognized. It is possible for a smaller pulse width to cause a reset.
1. The sync processor module is designed to function at f
2. No more than 10% duty cycle deviation from 50%
3. Not Required for high frequency crystals
see appropriate table for this information.
DD
= 3.0 to 3.6 Vdc, V
Characteristic
(3)
(1)
—
Rev. 3.0
(1), (2)
Characteristic
Characteristic
SS
(3)
(3)
= 0 Vdc; timing shown with respect to 20% V
(3)
(2)
Table 24-7. Oscillator Characteristics
Table 24-6. TIM Characteristics
(1)
Table 24-5. Control Timing
f
f
Symbol
OSCXCLK
OSCXCLK
Electrical Specifications
C
C
R
R
B
S
1
2
OSCXCLK
Min
dc
—
—
—
—
—
= 24MHz.
t
Symbol
TCH,
t
TIH,
Symbol
DD
t
t
t
f
TIL
TCL
IRL
OP
and 70% V
Typ
24
24
15
15
2
0
(1/f
Min
OP
DD
125
Min
50
—
, unless otherwise noted.
) + 5
Max
—
—
—
—
—
—
Electrical Specifications
Max
—
6
Max
—
—
Control Timing
Data Sheet
MHz
MHz
Unit
MΩ
pF
pF
MHz
Unit
Ω
ns
Unit
ns
ns
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