K20P48M50SF0 Datasheet, PDF (54/60 Pages) Freescale Semiconductor, Inc – K20 Sub-Family

Peripheral operating requirements and behaviors
I2S_TX_BCLK/
I2S_RX_BCLK (input)
I2S_TX_FS/
I2S_RX_FS (output)
I2S_TX_FS/
I2S_RX_FS (input)
I2S_TXD
I2S_RXD
S11
S12
S15
S13
S19
S15
S12
S15
S16
S17
S18
Figure 22. I2S/SAI timing — slave modes
S16
S14
S16
6.9 Human-machine interfaces (HMI)
6.9.1 TSI electrical specifications
Table 40. TSI electrical specifications
Symbol Description
V_DDTSI Operating voltage
C_ELE Target electrode capacitance range
f_REFmax Reference oscillator frequency
f_ELEmax Electrode oscillator frequency
C_REF Internal reference capacitor
V_DELTA Oscillator delta voltage
I_REF Reference oscillator current source base current
• 2 μA setting (REFCHRG = 0)
• 32 μA setting (REFCHRG = 15)
I_ELE Electrode oscillator current source base current
• 2 μA setting (EXTCHRG = 0)
• 32 μA setting (EXTCHRG = 15)
Pres5 Electrode capacitance measurement precision
Pres20 Electrode capacitance measurement precision
Pres100 Electrode capacitance measurement precision
MaxSens Maximum sensitivity
Res Resolution
Min.
1.71
1
—
—
—
—
—
—
—
—
—
—
—
0.008
—
Typ.
—
20
8
1
1
500
2
36
2
36
8.3333
8.3333
8.3333
1.46
—
Max.
3.6
500
15
1.8
—
—
3
50
3
50
38400
38400
38400
—
16
Table continues on the next page...
Unit
V
pF
MHz
MHz
pF
mV
μA
μA
fF/count
fF/count
fF/count
fF/count
bits
Notes
1
2, 3
2, 4
2, 5
2, 6
2, 7
8
9
10
11
K20 Sub-Family Data Sheet, Rev. 4 5/2012.
54
Freescale Semiconductor, Inc.