Freescale Semiconductor Tower System Module S12G240 TWR-S12G240 TWR-S12G240 数据表
产品代码
TWR-S12G240
Electrical Characteristics
MC9S12G Family Reference Manual,
Rev.1.23
1236
Freescale Semiconductor
A.8.2
Electrical Characteristics for the PLL
A.9
Electrical Characteristics for the IRC1M
Table A-36. PLL Characteristics
Conditions are shown in
Num
C
Rating
Symbol
Min
Typ
Max
Unit
1
D VCO frequency during system reset
f
VCORST
8
25
MHz
2
C VCO locking range
f
VCO
32
50
MHz
3
C Reference Clock
f
REF
1
MHz
4
D Lock Detection
|∆
Lock
|
0
1.5
%
1
1
% deviation from target frequency
5
D Un-Lock Detection
|∆
unl
|
0.5
2.5
%
1
6
C Time to lock
t
lock
150 +
256/f
REF
µs
7
C Jitter fit parameter 1
2
IRC as reference clock source
2
f
REF
= 1MHz (IRC), f
BUS
= 25MHz equivalent f
PLL
= 50MHz, CPMUSYNR=0x58, CPMUREFDIV=0x00, CPMUPOSTDIV=0x00
j
irc
1.4
%
8
C Jitter fit parameter 1
3
XOSCLCP as reference clock source
3
f
REF
= 4MHz (XOSCLCP), f
BUS
= 24MHz equivalent f
PLL
= 48MHz, CPMUSYNR=0x05, CPMUREFDIV=0x40,
CPMUPOSTDIV=0x00
j
ext
1.0
%
Table A-37. IRC1M Characteristics (Junction Temperature From –40
°C To +150°C, all packages)
Conditions are: Temperature option C, V, or M (see
Num
C
Rating
Symbol
Min
Typ
Max
Unit
1
P Internal Reference Frequency, factory trimmed
f
IRC1M_TRIM
0.987
1
1.013
MHz
Table A-38. IRC1M Characteristics (Junction Temperature From –40
°C To +150°C, KGD)
Conditions are: Temperature option C, V, or M (see
Num
C
Rating
Symbol
Min
Typ
Max
Unit
1
P Internal Reference Frequency, factory trimmed
f
IRC1M_TRIM
0.980
1
1.020
MHz