K10P81M100SF2 Datasheet, PDF (53/60 Pages) Freescale Semiconductor, Inc – K10 Sub-Family Data Sheet

Dimensions
Table 42. Touch Sensing Input module specifications (continued)
Symbol Description
Min.
Typ.
Max.
Unit
Notes
f_ELEmax Electrode oscillator frequency
—
0.5
TBD
MHz
C_REF Internal reference capacitor
TBD
1
TBD
pF
V_DELTA Oscillator delta voltage
TBD
600
TBD
mV
I_REF Reference oscillator current source base current
TBD
1
TBD
μA
2
I_ELE Electrode oscillator current source base current
TBD
1
TBD
μA
3
Pres5 Electrode capacitance measurement precision
—
TBD
TBD
%
4
Pres20 Electrode capacitance measurement precision
—
TBD
TBD
%
5
Pres100 Electrode capacitance measurement precision
—
TBD
TBD
%
6
Max‐ Max sensitivity @ 20pF electrode
y _Sens20
0.15
0.326
600
fF
7
r _{MaxSens Maximum sensitivity}
0.006
0.326
24
fF
8
Res Resolution
—
—
16
bits
a _{TCon20 Response time @ 20pF}
—
30
—
μs
9
I_{TSI_RUN} Current added in run mode
—
TBD
—
μA
in ^{ITSI_LP Low power mode current adder}
—
1
TBD
μA
1. The TSI module is functional with capacitance values outside of this range. However, optimal performance is not
guaranteed.
2. The programmable current source value is generated by multiplying the SCANC[REFCHRG] value and the base current
lim ^{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
7 Dimensions ^{Pre 9. Time that takes to do one complete measurement of the electrode. Sensitivity resolution of 0.0133pF}
7.1 Obtaining package dimensions
Package dimensions are provided in package drawings.
To find a package drawing, go to www.freescale.com and perform a keyword search for
the drawing’s document number:
If you want the drawing for this package
80-pin LQFP
81-pin MAPBGA
Then use this document number
98ASS23174W
98ASH98051A
K10 Sub-Family Data Sheet Data Sheet, Rev. 1, 11/2010.
Freescale Semiconductor, Inc.
Preliminary
53