K20P104M100SF2 Freescale Semiconductor, K20P104M100SF2 Datasheet - Page 54

• Manufacturer Part Number: K20P104M100SF2
• Description: K20 Sub-Family
• Manufacturer: Freescale Semiconductor

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Dimensions
3. 75pF load
4. 15pF load
6.9.2 TSI Electrical Specifications
1. The TSI module is functional with capacitance values outside of this range. However, optimal performance is not
2. The programmable current source value is generated by multiplying the SCANC[REFCHRG] value and the base current
3. The programmable current source value is generated by multiplying the SCANC[EXTCHRG] value and the base current
4. Measured with a 5pF electrode, reference oscillator frequency of 10MHz, PS = 128, NCSC = 8; Iext = 16
5. Measured with a 20pF electrode, reference oscillator frequency of 10MHz, PS = 128, NCSC = 2; Iext = 16
6. Measured with a 20pF electrode, reference oscillator frequency of 10MHz, PS = 16, NCSC = 3; Iext = 16
7. 6.2ms scan time
8. 1pF electrode capacitance with 4.96ms scan time
9. Time that takes to do one complete measurement of the electrode. Sensitivity resolution of 0.0133pF
7 Dimensions
54
MaxSens
Pres100
I
Symbol
Sens20
f
f
V
Pres20
V
TSI_RUN
T
I
REFmax
ELEmax
Pres5
C
Max‐
TSI_LP
guaranteed.
C
DELTA
I
I
Res
DDTSI
Con20
REF
ELE
REF
ELE
Operating voltage
Target electrode capacitance range
Reference oscillator frequency
Electrode oscillator frequency
Internal reference capacitor
Oscillator delta voltage
Reference oscillator current source base current
Electrode oscillator current source base current
Electrode capacitance measurement precision
Electrode capacitance measurement precision
Electrode capacitance measurement precision
Max sensitivity @ 20pF electrode
Maximum sensitivity
Resolution
Response time @ 20pF
Current added in run mode
Low power mode current adder
Description
Table 44. Touch Sensing Input module specifications
K20 Sub-Family Data Sheet Data Sheet, Rev. 1, 11/2010.
Preliminary
0.006
TBD
TBD
TBD
TBD
1.71
0.15
Min.
—
—
—
—
—
—
—
—
—
1
0.326
0.326
TBD
TBD
TBD
TBD
Typ.
600
5.5
0.5
20
30
—
—
1
1
1
1
Max.
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
500
600
3.6
24
16
—
—
Freescale Semiconductor, Inc.
MHz
MHz
Unit
bits
mV
μA
μA
μA
μA
pF
pF
μs
%
%
%
fF
fF
V
Notes
1
2
3
4
5
6
7
8
9
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