sak-xc888clm-8ffa Infineon Technologies Corporation, sak-xc888clm-8ffa Datasheet - Page 70

• Manufacturer Part Number: sak-xc888clm-8ffa
• Description: High Performance 8-bit Microcontroller With On-chip Flash Memory And Can
• Manufacturer: Infineon Technologies Corporation

PLL Mode
The system clock is derived from the oscillator clock, multiplied by the N factor, and
divided by the P and K factors. Both VCO bypass and PLL bypass must be inactive for
this PLL mode. The PLL mode is used during normal system operation. .
System Frequency Selection
For the XC886/888, the value of P is fixed to 1. In order to obtain the required fsys, the
value of N and K can be selected by bits NDIV and KDIV respectively for different
oscillator inputs. The output frequency must always be configured for 96 MHz.
provides examples on how f
sources.
Table 24
Oscillator
On-chip
External
Table 25
Table 25
3.8.1
Figure 26
resonator, its frequency can be within the range of 3 MHz to 12 MHz. A resonator load
circuitry must be used, connected to both pins, XTAL1 and XTAL2. It normally consists
of two load capacitances C
(R
Data Sheet
Prelimary
f
150
100
VCOmin
d
) resistor might be necessary.
shows the VCO range for the XC886/888.
shows the recommended ceramic resonator circuitry. When using an external
Resonator Circuitry
System frequency (f
VCO Range
200
150
f
VCOmax
fosc
9.6 MHz
8 MHz
6 MHz
4 MHz
1
and C
sys
f
SYS
= 96 MHz can be obtained for the different oscillator
N
20
24
32
48
2
sys
, and in some cases, a feedback (R
=
f
20
10
VCOFREEmin
= 96 MHz)
f
OSC
66
P
1
1
1
1
×
-------------
P
N
×
K
K
2
2
2
2
f
80
80
VCOFREEmax
fsys
96 MHz
96 MHz
96 MHz
96 MHz
Functional Description
XC886/888CLM
f
) and/or damp
Unit
MHz
MHz
V0.1, 2006-02
Table 24