MCF51QM128VHS FREESCALE [Freescale Semiconductor, Inc], MCF51QM128VHS Datasheet - Page 53

• Manufacturer Part Number: MCF51QM128VHS
• Description: MCF51QM128
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

1. The TSI module is functional with capacitance values outside this range. However, optimal performance is not guaranteed.
2. CAPTRM=7, DELVOL=7, and fixed external capacitance of 20 pF.
3. CAPTRM=0, DELVOL=2, and fixed external capacitance of 20 pF.
4. CAPTRM=0, EXTCHRG=9, and fixed external capacitance of 20 pF.
5. The programmable current source value is generated by multiplying the SCANC[REFCHRG] value and the base current.
6. The programmable current source value is generated by multiplying the SCANC[EXTCHRG] value and the base current.
7. Measured with a 5 pF electrode, reference oscillator frequency of 10 MHz, PS = 128, NSCN = 8; Iext = 16.
8. Measured with a 20 pF electrode, reference oscillator frequency of 10 MHz, PS = 128, NSCN = 2; Iext = 16.
9. Measured with a 20 pF electrode, reference oscillator frequency of 10 MHz, PS = 16, NSCN = 3; Iext = 16.
10. Sensitivity defines the minimum capacitance change when a single count from the TSI module changes, it is equal to (C
11. Time to do one complete measurement of the electrode. Sensitivity resolution of 0.0133 pF, PS = 0, NSCN = 0, 1
12. CAPTRM=7, DELVOL=2, REFCHRG=0, EXTCHRG=4, PS=7, NSCN=0F, LPSCNITV=F, LPO is selected (1 kHz), and
7
7.1 Obtaining package dimensions
Package dimensions are provided in package drawings.
To find a package drawing, go to
search for the drawing’s document number:
Freescale Semiconductor, Inc.
32-pin QFN
44-pin Laminate QFN
48-pin LQFP
64-pin LQFP
I
Symbol
TSI_RUN
T
I
TSI_LP
Res
* I
configuration: Iext = 5 μA, EXTCHRG = 4, PS = 128, NSCN = 2, I
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
pF
electrode, DELVOL = 2, EXTCHRG = 15.
fixed external capacitance of 20 pF. Data is captured with an average of 7 periods window.
Con20
Dimensions
ext
)/( I
If you want the drawing for this package
ref
Resolution
Response time @ 20 pF
Current added in run mode
Low power mode current adder
Description
* PS * NSCN). Sensitivity depends on the configuration used. The typical value listed is based on the following
Table 34. TSI electrical specifications (continued)
ext
MCF51QM128 Data Sheet, Rev. 6, 01/2012.
= 1 μA, EXTCHRG = 0, PS = 128, NSCN = 32, I
http://www.freescale.com
98ARE10566D
98ASA00239D
98ASH00962A
98ASS23234W
Min.
—
—
—
8
ref
= 16 μA, REFCHRG = 15, C
Then use this document number
Typ.
1.3
15
55
—
and perform a keyword
ref
= 32 μA, REFCHRG = 31, C
Max.
2.5
16
25
—
ref
= 1.0 pF. The
Unit
bits
μA
μA
μs
Dimensions
Notes
ref
11
12
= 0.5
ref
53