MC68HC908AS60ACFN FREESCALE [Freescale Semiconductor, Inc], MC68HC908AS60ACFN Datasheet - Page 372

• Manufacturer Part Number: MC68HC908AS60ACFN
• Description: M68HC08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Electrical Specifications
28.1.8 CGM Operating Conditions
1. f
28.1.9 CGM Component Information
372
Operating Voltage
Crystal Reference Frequency
Module Crystal Reference Frequency
Range Nom. Multiplier
VCO Center-of-Range Frequency
VCO Operating Frequency
Crystal Load Capacitance
Crystal Fixed Capacitance
Crystal Tuning Capacitance
Filter Capacitor Multiply Factor
Filter Capacitor
Bypass Capacitor
operating frequency, f
CGMVRS
is a nominal value described and calculated as an example in
Description
Characteristic
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
CGMVCLK
.
Symbol
C
C
C1
C2
C
C
BYP
fact
F
L
f
f
f
CGMRCLK
f
Symbol
CGMXCLK
CGMVCLK
CGMVRS
V
V
f
NOM
DDA
SSA
Min
—
—
—
—
—
—
V
V
4.9152
4.9152
DD
SS
Min
(V
—
—
1
–0.3
–0.3
DDA
C
0.0154
2 x CL
2 x CL
FACT
Typ
0.1
Chapter 10 Clock Generator Module (CGM)
—
/f
XCLK
x
4.9152
4.9152
4.9152
Typ
)
—
—
—
—
Max
—
—
—
—
—
—
V
V
Note
DD
SS
Max
32.0
—
—
8
+0.3
+0.3
F/s V
Unit
(1)
μF
—
—
—
—
Unit
MHz
MHz
MHz
MHz
Consult Crystal
Manufacturer’s Data
Consult Crystal
Manufacturer’s Data
Consult Crystal
Manufacturer’s Data
See
Capacitor Pin (CGMXFC)
CBYP must provide low AC
impedance from
f = f
f
resistance must be
considered.
V
V
CGMVCLK
CGMXCLK
10.4.3 External Filter
Freescale Semiconductor
Same Frequency
as f
Comments
, so series
for the desired VCO
CGMRCLK
Comments
/100 to 100 x