CGM Electrical Specification
22.14 CGM Electrical Specification
Table 22-14. CGM Electrical Specifications
Characteristic
Reference frequency
Symbol
Min
30
—
Typ
32.768
125
—
Max
100
—
Unit
kHz
kHz
Hz
fRDV
fNOM
fVRS
L
Range nominal multiplies
VCO center-of-range frequency
VCO range linear range multiplier
VCO power-of-two-range multiplier
VCO multiply factor
125k
1
40M
255
4
—
2E
N
1
—
1
—
4095
8
2P
R
VCO prescale multiplier
Reference divider factor
VCO operating frequency
Manual acquisition time
1
—
1
1
15
fVCLK
125k
—
—
40M
50
Hz
ms
ms
tLOCK
tLOCK
—
Automatic lock time
—
—
50
fRCLK
×
PLL jitter(1)
0.025% × 2P
fJ
0
—
Hz
N/4
1. Deviation of average bus frequency over 2ms. N = VCO multiplier.
MC68HC908AP Family Data Sheet, Rev. 4
Freescale Semiconductor
309
FREESCALE [ Freescale ]
