s908gr32ag3vfa Freescale Semiconductor, Inc, s908gr32ag3vfa Datasheet - Page 284

• Manufacturer Part Number: s908gr32ag3vfa
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Electrical Specifications
20.9 Clock Generation Module (CGM) Characteristics
20.9.1 CGM Operating Conditions
20.9.2 CGM Component Information
284
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
MC68HC908GR60A • MC68HC908GR48A • MC68HC908GR32A Data Sheet, Rev. 5
Characteristic
Characteristic
(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