MK20FN1M0VMD12 Freescale Semiconductor, MK20FN1M0VMD12 Datasheet - Page 75

• Manufacturer Part Number: MK20FN1M0VMD12
• Description: ARM Microcontrollers - MCU KINETIS 1MB USB
• Manufacturer: Freescale Semiconductor

Specifications of MK20FN1M0VMD12

• Rohs: yes
• Core: ARM Cortex M4
• Processor Series: K20
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 120 MHz
• Program Memory Size: 1 MB
• Data Ram Size: 128 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.71 V to 3.6 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: MAPBGA-144
• Mounting Style: SMD/SMT

1. The TSI module is functional with capacitance values outside this range. However, optimal performance is not guaranteed.
2. Fixed external capacitance of 20 pF.
3. REFCHRG = 2, EXTCHRG=0.
4. REFCHRG = 0, EXTCHRG = 10.
5. V
6. The programmable current source value is generated by multiplying the SCANC[REFCHRG] value and the base current.
7. The programmable current source value is generated by multiplying the SCANC[EXTCHRG] value and the base current.
8. Measured with a 5 pF electrode, reference oscillator frequency of 10 MHz, PS = 128, NSCN = 8; Iext = 16.
9. Measured with a 20 pF electrode, reference oscillator frequency of 10 MHz, PS = 128, NSCN = 2; Iext = 16.
10. Measured with a 20 pF electrode, reference oscillator frequency of 10 MHz, PS = 16, NSCN = 3; Iext = 16.
11. Sensitivity defines the minimum capacitance change when a single count from the TSI module changes. Sensitivity
12. Time to do one complete measurement of the electrode. Sensitivity resolution of 0.0133 pF, PS = 0, NSCN = 0, 1
13. REFCHRG=0, EXTCHRG=4, PS=7, NSCN=0F, LPSCNITV=F, LPO is selected (1 kHz), and fixed external capacitance of
7 Dimensions
Freescale Semiconductor, Inc.
MaxSens Maximum sensitivity
Pres100
I
Symbol
V
Pres20
TSI_RUN
T
I
Pres5
C
TSI_LP
DELTA
I
I
Res
depends on the configuration used. The documented values are provided as examples calculated for a specific
configuration of operating conditions using the following equation: (C
The typical value is calculated with the following configuration:
I
The minimum value is calculated with the following configuration:
I
The highest possible sensitivity is the minimum value because it represents the smallest possible capacitance that can be
measured by a single count.
electrode, EXTCHRG = 7.
20 pF. Data is captured with an average of 7 periods window.
Con20
REF
ELE
ext
ext
DD
REF
= 6 μA (EXTCHRG = 2), PS = 128, NSCN = 2, I
= 2 μA (EXTCHRG = 0), PS = 128, NSCN = 32, I
= 3.0 V.
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
Resolution
Response time @ 20 pF
Current added in run mode
Low power mode current adder
Description
• 2 μA setting (REFCHRG = 0)
• 32 μA setting (REFCHRG = 15)
• 2 μA setting (EXTCHRG = 0)
• 32 μA setting (EXTCHRG = 15)
Table 54. TSI electrical specifications (continued)
K20 Sub-Family Data Sheet, Rev. 4, 10/2012.
ref
ref
= 16 μA (REFCHRG = 7), C
= 32 μA (REFCHRG = 15), C
0.008
Min.
—
—
—
—
—
—
—
—
—
—
—
—
8
ref
* I
ext
8.3333
8.3333
8.3333
)/( I
1.46
Typ.
600
1.3
36
36
15
55
—
1
2
2
ref
* PS * NSCN)
ref
= 1.0 pF
ref
38400
38400
38400
= 0.5 pF
Max.
2.5
50
50
16
25
—
—
—
—
3
3
fF/count
fF/count
fF/count
fF/count
Unit
bits
mV
μA
μA
μA
μA
pF
μs
Dimensions
Notes
2,
2,
2,
10
11
12
13
8
9
5
6
7
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