K50P121M100SF2 Datasheet, PDF(62/69 Page) Freescale Semiconductor, Inc – Up to 100 MHz ARM Cortex-M4 core with DSP instructions delivering 1.25 Dhrystone MIPS per MHz

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K50P121M100SF2 Datasheet, PDF (62/69 Pages) Freescale Semiconductor, Inc – Up to 100 MHz ARM Cortex-M4 core with DSP instructions delivering 1.25 Dhrystone MIPS per MHz

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Dimensions

Table 49. TSI electrical specifications (continued)

Symbol Description

CREF Internal reference capacitor

VDELTA Oscillator delta voltage

IREF Reference oscillator current source base current

IELE Electrode oscillator current source base current

Pres5 Electrode capacitance measurement precision

Pres20 Electrode capacitance measurement precision

Pres100 Electrode capacitance measurement precision

MaxSens2 Maximum sensitivity @ 20 pF electrode

MaxSens Maximum sensitivity

Res Resolution

TCon20 Response time @ 20 pF

ITSI_RUN Current added in run mode

ITSI_LP Low power mode current adder

Min.

TBD

0.003

Typ.

600

TBD

0.25

TBD

Max.

TBD

Unit

Î¼A

fF/count

bits

Î¼s

Î¼A

Notes

1. The TSI module is functional with capacitance values outside 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. Measured with a 5 pF electrode, reference oscillator frequency of 10 MHz, PS = 128, NSCN = 8; Iext = 16.

4. Measured with a 20 pF electrode, reference oscillator frequency of 10 MHz, PS = 128, NSCN = 2; Iext = 16.

5. Measured with a 20 pF electrode, reference oscillator frequency of 10 MHz, PS = 16, NSCN = 3; Iext = 16.

6. Measured with a 20 pF electrode, reference oscillator frequency of ~5 MHz (IREF = 5 Î¼A, REFCHRG = 4), PS = 128,

NSCN = 2; Iext = 16 (EXTCHRG = 15).

7. Typical value depends on the configuration used.

8. Time to do one complete measurement of the electrode. Sensitivity resolution of 0.0133 pF, PS = 0, NSCN = 0, 1

electrode, DELVOL = 2, EXTCHRG = 15.

7 Dimensions

7.1 Obtaining package dimensions

Package dimensions are provided in package drawings.

To find a package drawing, go to http://www.freescale.com and perform a keyword

search for the drawingâs document number:

If you want the drawing for this package

121-pin MAPBGA

TBD

Then use this document number

K50 Sub-Family Data Sheet Data Sheet, Rev. 4, 3/2011.

Preliminary

Freescale Semiconductor, Inc.

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