MC9RS08KB12 Datasheet, PDF (28/48 Pages) Freescale Semiconductor, Inc – MCU Block Diagram

Electrical Characteristics
Table 12. Analog Comparator Electrical Specifications (continued)
Num
C
Characteristic
Symbol
Min
Typical
Max
Unit
9
P
Analog Comparator bandgap reference
voltage
V_BG
1 _{These data are characterized but not production tested.}
1.1
1.208
1.3
V
3.11 Internal Clock Source Characteristics
Table 13. Internal Clock Source Specifications
Num C
Characteristic
Symbol
Min Typical¹ Max
Unit
1 C Average internal reference frequency — untrimmed
2 P Average internal reference frequency — trimmed
3 C DCO output frequency range — untrimmed
4 P DCO output frequency range — trimmed
5 C _{Resolution of trimmed DCO output frequency}
at fixed voltage and temperature
f_{int_ut}
f_{int_t}
f_{dco_ut}
f_{dco_t}
Δf_{dco_res_t}
25
31.25
12.8
16
—
31.25
32.768
16
16.77
41.66
39.0625
21.33
20
kHz
kHz
MHz
MHz
—
0.2
%fdco
6 C _{Total deviation of trimmed DCO output frequency}
over voltage and temperature
Δf_{dco_t}
—
—
2
%fdco
7 C FLL acquisition time^2,3
t_acquire
—
—
1
ms
8 C _{Stop recovery time (FLL wakeup to previous acquired}
frequency)
IREFSTEN = 0
IREFSTEN = 1
t_wakeup
—
—
μs
100
86
1 _{Data in typical column was characterized at 3.0 V and 5.0 V, 25 °C or is typical recommended value.}
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).
3.12 ADC Characteristics
Table 14. 10-Bit ADC Operating Conditions
Characteristic
Conditions
Symb
Min
Typ¹
Max Unit Comment
Supply voltage
Input voltage
Input
capacitance
Absolute
V_DDAD
2.7
—
5.5
V
V_ADIN
V_REFL
—
V_REFH
V
C_ADIN
—
4.5
5.5
pF
Input
resistance
R_ADIN
—
3
5
kΩ
Analog source
resistance
10-bit mode
f_ADCK > 4MHz
f_ADCK < 4MHz
R_AS
—
—
kΩ External to
5
MCU
—
—
10
8-bit mode (all valid f_ADCK)
—
—
10
MC9RS08KB12 Series MCU Data Sheet, Rev. 3
28
Freescale Semiconductor