Appendix A Electrical Characteristics
MC9S12XF - Family Reference Manual, Rev.1.19
1218
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
Table A-22. IPLL Characteristics
Conditions are shown in
Table A-4 unless otherwise noted
Num
C
Rating
Symbol
Min
Typ
Max
Unit
1
P Self Clock Mode frequency
fSCM
1
5.5
MHz
2
T VCO locking range
fVCO
32
120
MHz
3
T Reference Clock
fREF
1
40
MHz
4
D System IPLL: Lock Detection
|Lock|
0
1.5
%(1)
1. System IPLL: % deviation from target frequency
5
D System IPLL: Un-Lock Detection
|unl|
0.5
2.5
7
C System IPLL: PLLON Stabilization delay(2)
2. System IPLL: fOSC = 8MHz, fBUS = 50MHz equivalent fPLL = 100MHz: REFDIV=$03, REFRQ=00, SYNDIV=$18, VCOFRQ=11,
POSTDIV=$ 00. Jitter spec is valid for N=1 to 10000 bus clock cycles
tstab
0.25
ms
8
C System IPLL: Jitter t parameter
12j1
1.2
%
9
C System IPLL: Jitter t parameter
22j2
0%
10
D System IPLL: Bus Frequency for FM1=1, FM0=1
(frequency modulation in PLLCTL register of s12xe_crg)
fbus
48
MHz
11
D System IPLL: Bus Frequency for FM1=1, FM0=0
(frequency modulation in PLLCTL register of s12xe_crg)
fbus
49
MHz
12
D System IPLL: Bus Frequency for FM1=0, FM0=1
(frequency modulation in PLLCTL register of s12xe_crg)
fbus
49
MHz
13
D FlexRay IPLL: Lock Detection
|Lock|
0
1.5
14
D FlexRay IPLL: Un-Lock Detection
|unl|
0.5
2.5
15
C FlexRay IPLL: PLLON Stabilization delay(3)
3. FlexRay IPLL: fOSC = 8MHz equivalent fCGMPLL = 80MHz: REFDIV=$00, REFRQ=10, SYNDIV=$04, VCOFRQ=01,
POSTDIV=$ 00. Jitter spec is valid for N=1 to 10000 CGMPLL clock cycles
tstab
0.25
ms
16
C FlexRay IPLL: Jitter t parameter 1
3j1
1.7
%
17
C FlexRay IPLL: Jitter t parameter 2
3j2
0%
Table A-23. MSCAN Wake-up Pulse Characteristics
Conditions are shown in
Table A-4 unless otherwise noted
Num
C
Rating
Symbol
Min
Typ
Max
Unit
1
P MSCAN wakeup dominant pulse ltered
tWUP
—
1.5
s
2
P MSCAN wakeup dominant pulse pass
tWUP
5—
—
s