K30P64M72SF1 Datasheet, PDF (61/68 Pages) Freescale Semiconductor, Inc – K30 Sub-Family

Peripheral operating requirements and behaviors
Table 43. TSI electrical specifications (continued)
Symbol
T_Con20
I_{TSI_RUN}
I_{TSI_LP}
Description
Response time @ 20 pF
Current added in run mode
Low power mode current adder
Min.
8
—
—
Typ.
15
55
1.3
Max.
25
—
2.5
Unit
Notes
μs
12
μA
μA
13
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_DD = 3.0 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, it is equal to (C_ref
* I_ext)/( I_ref * PS * NSCN). Sensitivity depends on the configuration used. The typical value listed is based on the following
configuration: Iext = 6 μA (EXTCHRG = 2), PS = 128, NSCN = 2, I_ref = 16 μA (REFCHRG = 7), C_ref = 1.0 pF. The
minimum sensitivity describes the smallest possible capacitance that can be measured by a single count (this is the best
sensitivity but is described as a minimum because it’s the smallest number). The minimum sensitivity parameter is based
on the following configuration: I_ext = 2 μA (EXTCHRG = 0), PS = 128, NSCN = 32, I_ref = 32 μA (REFCHRG = 15).
12. Time to do one complete measurement of the electrode. Sensitivity resolution of 0.0133 pF, PS = 0, NSCN = 0, 1
electrode, EXTCHRG = 7.
13. REFCHRG=0, EXTCHRG=4, PS=7, NSCN=0F, LPSCNITV=F, LPO is selected (1 kHz), and fixed external capacitance of
20 pF. Data is captured with an average of 7 periods window.
6.9.2 LCD electrical characteristics
Table 44. LCD electricals
Symbol
f_Frame
C_LCD
C_BYLCD
C_Glass
V_IREG
Description
LCD frame frequency
LCD charge pump capacitance — nominal value
LCD bypass capacitance — nominal value
LCD glass capacitance
V_IREG
• HREFSEL=0, RVTRIM=1111
• HREFSEL=0, RVTRIM=1000
• HREFSEL=0, RVTRIM=0000
Min.
28
—
—
—
—
—
—
Typ.
30
100
100
2000
1.11
1.01
0.91
• HREFSEL=1, RVTRIM=1111
• HREFSEL=1, RVTRIM=1000
• HREFSEL=1, RVTRIM=0000
—
1.84
—
1.69
—
1.54
Δ_RTRIM V_IREG TRIM resolution
—
—
Table continues on the next page...
Max.
58
—
—
8000
—
—
—
—
—
—
3.0
Freescale Semiconductor, Inc.
K30 Sub-Family Data Sheet, Rev. 2, 4/2012.
Unit
Hz
nF
nF
pF
V
V
V
V
V
V
% V_IREG
Notes
1
1
2
3
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