MC9S12A256 Motorola, MC9S12A256 Datasheet - Page 116

• Manufacturer Part Number: MC9S12A256
• Description: MC9S12DT256 Device User Guide V03.03
• Manufacturer: Motorola

MC9S12DT256 Device User Guide — V03.03
This is very important to notice with respect to timers, serial modules where a pre-scaler will eliminate the
effect of the jitter to a large extent.
Conditions are shown in Table A-4 unless otherwise noted
Num C
NOTES:
1. % deviation from target frequency
2. f
10
11
12
13
14
15
114
1
2
3
4
5
6
7
8
9
osc
D VCO locking range
D
D Lock Detection
D Un-Lock Detection
D
C PLLON Total Stabilization delay (Auto Mode)
D PLLON Acquisition mode stabilization delay
D PLLON Tracking mode stabilization delay
D Fitting parameter VCO loop gain
D Fitting parameter VCO loop frequency
D Charge pump current acquisition mode
D Charge pump current tracking mode
C Jitter fit parameter 1
C Jitter fit parameter 2
= 4MHz, f
P Self Clock Mode frequency
Lock Detector transition from Acquisition to Tracking
mode
Lock Detector transition from Tracking to Acquisition
mode
BUS
= 25MHz equivalent f
(2)
(2)
Rating
Table A-16 PLL Characteristics
VCO
= 50MHz: REFDV = #$03, SYNR = #$018, Cs = 4.7nF, Cp = 470pF, Rs = 10K .
(2)
(2)
2
Symbol
| i
| i
f
f
t
SCM
t
VCO
Lock
stab
K
acq
t
f
ch
ch
j
j
unl
unt
trk
al
1
2
1
1
|
|
|
|
|
|
Min
0.5
1
8
3
0
6
Typ
-100
38.5
0.5
0.3
0.2
3.5
60
Max
0.13
5.5
1.5
2.5
1.1
50
4
8
MHz/V
Unit
MHz
MHz
MHz
%
%
%
%
ms
ms
ms
%
%
(1)
(1)
(1)
A
A
1