Datasheet

Electrical Characteristics
MC9RS08KB12 Series MCU Data Sheet, Rev. 5
Freescale Semiconductor 29
3.11 Internal Clock Source Characteristics
3.12 ADC Characteristics
9P
Analog Comparator bandgap reference
voltage
V
BG
1.1 1.208 1.3 V
1
These data are characterized but not production tested.
Table 13. Internal Clock Source Specifications
Num C Characteristic Symbol Min Typical
1
1
Data in typical column was characterized at 3.0 V and 5.0 V, 25 °C or is typical recommended value.
Max Unit
1 C Average internal reference frequency — untrimmed f
int_ut
25 31.25 41.66 kHz
2 P Average internal reference frequency — trimmed f
int_t
31.25 32.768 39.0625 kHz
3 C DCO output frequency range — untrimmed f
dco_ut
12.8 16 21.33 MHz
4 P DCO output frequency range — trimmed f
dco_t
16 16.77 20 MHz
5C
Resolution of trimmed DCO output frequency
at fixed voltage and temperature
Δf
dco_res_t
—— 0.2 %f dco
6C
Total deviation of trimmed DCO output frequency
over voltage and temperature
Δf
dco_t
—— 2%f dco
7 C FLL acquisition time
2
,
3
2
This parameter is characterized and not tested on each device.
3
This specification applies to any time the FLL reference source or reference divider is changed, trim value changed or
changing from FLL disabled (FBILP) to FLL enabled (FEI, FBI).
t
acquire
—— 1ms
8C
Stop recovery time (FLL wakeup to previous acquired
frequency)
IREFSTEN = 0
IREFSTEN = 1
t_wakeup —
100
86
— μs
Table 14. 10-Bit ADC Operating Conditions
Characteristic Conditions Symb Min Typ
1
Max Unit Comment
Supply voltage Absolute V
DDAD
1.8 — 5.5 V
Input voltage V
ADIN
V
REFL
—V
REFH
V
Input
capacitance
C
ADIN
—4.55.5pF
Input
resistance
R
ADIN
—3 5kΩ
Analog source
resistance
10-bit mode
f
ADCK
> 4MHz
f
ADCK
< 4MHz
R
AS
—
—
—
—
5
10
kΩ External to
MCU
8-bit mode (all valid f
ADCK
)——10
Table 12. Analog Comparator Electrical Specifications (continued)
Num C Characteristic Symbol Min Typical Max Unit