K20P144M120SF3 Datasheet, PDF (68/80 Pages) Freescale Semiconductor, Inc – K20 Sub-Family Data Sheet

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
S15
S12
S15
S16
S17
S18
Figure 32. I2S/SAI timing — slave modes
S16
S14
S16
6.9 Human-machine interfaces (HMI)
6.9.1 TSI electrical specifications
Table 48. 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
• 1uA setting (REFCHRG=0)
• 32uA setting (REFCHRG=31)
I_ELE Electrode oscillator current source base current
• 1uA setting (EXTCHRG=0)
• 32uA setting (EXTCHRG=31)
Pres5 Electrode capacitance measurement precision
Pres20 Electrode capacitance measurement precision
Pres100 Electrode capacitance measurement precision
MaxSens Maximum sensitivity
Res Resolution
Min.
1.71
1
—
—
TBD
TBD
—
—
—
—
—
—
—
0.003
—
Typ.
—
20
8
0.5
1
600
1.133
36
1.133
36
8.3333
8.3333
8.3333
12.5
—
Max.
3.6
500
TBD
TBD
TBD
TBD
1.5
50
1.5
50
38.4
38.4
38.4
—
16
Table continues on the next page...
Unit
V
pF
MHz
MHz
pF
mV
μA
μA
pF/count
pF/count
pF/count
fF/count
bits
Notes
1
2
2
2
2, 3
2, 4
5
6
7
8
K20 Sub-Family Data Sheet Data Sheet, Rev. 3, 2/2012.
68
Preliminary
Freescale Semiconductor, Inc.