Datasheet

Appendix A Electrical Characteristics
MC9S08EL32 Series and MC9S08SL16 Series Data Sheet, Rev. 3
Freescale Semiconductor 343
Figure A-8. Typical Frequency Deviation vs Temperature (ICS Trimmed to 16MHz bus@25°C, 5V, FEI)
1
A.10 Analog Comparator (ACMP) Electricals
9D
Total deviation of trimmed DCO output frequency over
voltage and temperature
Δf
dco_t
—
+ 0.5
– 1.0
± 2
%f
dco
10 D
Total deviation of trimmed DCO output frequency over
fixed voltage and temperature range of 0
°C to 70 °C
Δf
dco_t
— ± 0.5 ± 1
%f
dco
11 D
FLL acquisition time
2
t
acquire
1ms
12 D
DCO output clock long term jitter (over 2 ms interval)
3
C
Jitter
—0.020.2
%f
dco
1
TRIM register at default value (0x80) and FTRIM control bit at default value (0x0).
2
This specification applies to any time the FLL reference source or reference divider is changed, trim value changed or changing
from FLL disabled (FBELP, FBILP) to FLL enabled (FEI, FEE, FBE, FBI). If a crystal/resonator is being used as the reference,
this specification assumes it is already running.
3
Jitter is the average deviation from the programmed frequency measured over the specified interval at maximum f
BUS
.
Measurements are made with the device powered by filtered supplies and clocked by a stable external clock signal. Noise injected
into the FLL circuitry via V
DD
and V
SS
and variation in crystal oscillator frequency increase the C
Jitter
percentage for a given
interval.
1. Based on the average of several hundred units from a typical characterization lot.
Table A-10. Analog Comparator Electrical Specifications
Num C Rating Symbol Min Typical Max Unit
1 — Supply voltage
V
DD
2.7 — 5.5 V
2 C/T Supply current (active)
I
DDAC
—2035μA
3 D Analog input voltage V
AIN
V
SS
– 0.3 — V
DD
V
Table A-9. ICS Frequency Specifications (continued)
(Temperature Range = –40 to 125°C Ambient)
Num C Rating Symbol Min Typical Max Unit
Deviation from Trimmed Frequency
Temperature ( °C )
85250–40 105
–2%
–1%
+2%
125
+1%
0