s908gz60cfa Freescale Semiconductor, Inc, s908gz60cfa Datasheet - Page 322
s908gz60cfa
Manufacturer Part Number
s908gz60cfa
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.S908GZ60CFA.pdf
(352 pages)
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s908gz60cfaE
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Electrical Specifications
21.9 Clock Generation Module (CGM) Characteristics
21.9.1 CGM Operating Conditions
21.9.2 CGM Component Information
322
Operating voltage
Crystal reference frequency
Input clock frequency (PLL off)
Range nominal multiplier
VCO center-of-range frequency
VCO operating frequency
Crystal frequency
Crystal load capacitance
Crystal fixed capacitance
Crystal tuning capacitance
Feedback bias resistor
Series damping resistor
V
CGMXFC filter values
1. External square wave applied to OSC1. Voltage levels must be rail-to-rail and duty cycle must be 50%.
2. Range of frequencies that VCO can produce to generate input clock to frequency divider during acquisition and tracking
3. Allowed VCO operating range.
1. Consult crystal manufacturer’s specification.
2. Capacitor on OSC1 pin. Does not include parasitic capacitance due to package, pin, and board.
3. Capacitor on OSC2 pin. Does not include parasitic capacitance due to package, pin, and board.
DDA
modes.
/V
SSA
bypass capacitor
Characteristic
Characteristic
MC68HC908GZ60 • MC68HC908GZ48 • MC68HC908GZ32 Data Sheet, Rev. 6
(1)
(2)
(3)
(3)
(1)
(2)
Symbol
Symbol
V
f
f
f
f
V
f
C
RCLK
XCLK
f
VCLK
XCLK
NOM
VRS
C
C
C
R
R
DDA
SSA
byp
B
S
L
1
2
See
Table 4-5. Example Filter Component Values
V
V
DD
71.42k
71.42k
SS
Min
Min
—
—
—
—
—
—
—
1
1
0
– 0.3
– 0.3
(2 x C
(2 x C
71.42
Typ
Typ
0.1
20
—
—
—
—
—
—
—
1
0
L
L
) – 5
) – 5
Freescale Semiconductor
V
V
DD
SS
Max
40M
32M
Max
32
47
47
10
—
—
—
—
8
8
+ 0.3
+ 0.3
MHz
MHz
MHz
Unit
Unit
kHz
MΩ
Hz
Hz
pF
pF
pF
kΩ
μF
V
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