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| 型號(hào)： | MK40X512VMD100 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | RISC MICROCONTROLLER, PBGA144 |
| 封裝： | 13 X 13 MM, MAPBGA-144 |
| 文件頁(yè)數(shù)： | 54/68頁(yè) |
| 文件大小： | 1005K |
| 代理商： | MK40X512VMD100 |
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3. 75pF load
4. 15pF load
6.9.2 TSI Electrical Specifications
Table 44. Touch Sensing Input module specifications
Symbol
Description
Min.
Typ.
Max.
Unit
Notes
VDDTSI
Operating voltage
1.71
—
3.6
V
CELE
Target electrode capacitance range
1
20
500
pF
fREFmax
Reference oscillator frequency
—
5.5
TBD
MHz
fELEmax
Electrode oscillator frequency
—
0.5
TBD
MHz
CREF
Internal reference capacitor
TBD
1
TBD
pF
VDELTA
Oscillator delta voltage
TBD
600
TBD
mV
IREF
Reference oscillator current source base current
TBD
1
TBD
μA
IELE
Electrode oscillator current source base current
TBD
1
TBD
μA
Pres5
Electrode capacitance measurement precision
—
TBD
%
Pres20
Electrode capacitance measurement precision
—
TBD
%
Pres100
Electrode capacitance measurement precision
—
TBD
%
Max‐
Sens20
Max sensitivity @ 20pF electrode
0.15
0.326
600
fF
MaxSens Maximum sensitivity
0.006
0.326
24
fF
Res
Resolution
—
16
bits
TCon20
Response time @ 20pF
—
30
—
μs
ITSI_RUN
Current added in run mode
—
TBD
—
μA
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
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
Peripheral operating requirements and behaviors
K40 Sub-Family Data Sheet Data Sheet, Rev. 1, 11/2010.
58
Preliminary
Freescale Semiconductor, Inc.
Preliminary
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