Appendix A Electrical Characteristics
MC9S12XE-Family Reference Manual , Rev. 1.19
1240
Freescale Semiconductor
This is important to note with respect to timers, serial modules where a prescaler will eliminate the effect
of the jitter to a large extent.
A.7
External Interface Timing
A.7.1
MSCAN
A.7.2
SPI Timing
This section provides electrical parametrics and ratings for the SPI. In
the measurement
conditions are listed.
Table A-25. IPLL Characteristics
Conditions are shown in
Num
C
Rating
Symbol
Min
Typ
Max
Unit
1
P Self Clock Mode frequency
1
1
Bus frequency is equivalent to f
SCM
/2
f
SCM
1
—
4
MHz
2
C VCO locking range
f
VCO
32
—
120
MHz
3
C Reference Clock
f
REF
1
—
40
MHz
4
D Lock Detection
|∆
Lock
|
0
—
1.5
%
2
2
% deviation from target frequency
5
D Un-Lock Detection
|∆
unl
|
0.5
—
2.5
7
C Time to lock
t
lock
—
214
150 +
256/f
REF
µ
s
8
C Jitter fit parameter 1
3
3
f
OSC
= 4MHz, f
BUS
= 50MHz equivalent f
PLL
= 100MHz: REFDIV=$01, REFRQ=01, SYNDIV=$18, VCOFRQ=11, POSTDIV=$
00.
j
1
—
—
1.2
%
9
C Jitter fit parameter 2
j
2
—
—
0
%
10
D Bus Frequency for FM1=1, FM0=1 (frequency
modulation in PLLCTL register of s12xe_crg)
f
bus
—
—
48
MHz
11
D Bus Frequency for FM1=1, FM0=0 (frequency
modulation in PLLCTL register of s12xe_crg)
f
bus
—
—
49
MHz
12
D Bus Frequency for FM1=0, FM0=1 (frequency
modulation in PLLCTL register of s12xe_crg)
f
bus
—
—
49
MHz
Table A-26. MSCAN Wake-up Pulse Characteristics
Conditions are shown in
Num
C
Rating
Symbol
Min
Typ
Max
Unit
1
P MSCAN wakeup dominant pulse filtered
t
WUP
—
—
1.5
µ
s
2
P MSCAN wakeup dominant pulse pass
t
WUP
5
—
—
µ
s
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages
