mpr081 Freescale Semiconductor, Inc, mpr081 Datasheet - Page 13

• Manufacturer Part Number: mpr081
• Description: Touch Pad Controller
• Manufacturer: Freescale Semiconductor, Inc

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Freescale Semiconductor
Table 14. Sensitivity Register Format
Sensitivity setting is level 1
Sensitivity setting is level 2
Sensitivity setting is level 3
Sensitivity setting is level 4
Sensitivity setting is level 5
Sensitivity setting is level 6
Sensitivity setting is level 7
Table 15. Master Tick Period Register Format
Table 16. Touch Acquisition Sample Rate Register Format
Master Tick Period is 5 ms
Master Tick Period is 6 ms
Master Tick Period is 7 ms
Master Tick Period is 8 ms
Master Tick Period is 33 ms
Master Tick Period is 34 ms
Master Tick Period is 35 ms
Master Tick Period is 36 ms
Touch acquisition sample rate is 1 master tick period
Touch acquisition sample rate is 2 master tick periods
Touch acquisition sample rate is 3 master tick periods
Touch acquisition sample rate is 4 master tick periods
Touch acquisition sample rate is 61 master tick periods
Touch acquisition sample rate is 62 master tick periods
Touch acquisition sample rate is 63 master tick periods
Touch acquisition sample rate is 64 master tick periods
Write Master Tick Period Register
Read Master Tick Period Register
Touch Acquisition Sample Rate Register
Write Number of Position Register
Read Number of Position Register
- all the way through to -
- all the way through to -
Register
Register
Register
R/W
X
1
0
R/W
1
0
1
Register Address
Register Address
Register
Address
0x04
0x06
0x06
0x05
D7
X
X
X
X
X
X
X
X
0
D6
D7
D7
—
—
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
D6
D6
—
—
D5
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
X
X
X
X
X
X
X
X
0
Touch Acquisition Sample Rate
D5
D5
—
—
X
X
X
X
X
X
X
X
X
0
0
0
0
0
1
1
1
1
Register Data
D4
X
X
X
X
X
X
X
Register Data
Register Data
D4
D4
—
—
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
D3
X
X
X
X
X
X
X
Sensitivity Level
D3
D3
—
—
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Master Tick
D2
0
0
0
0
1
1
1
D2
D2
—
—
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
D1
0
0
1
1
0
0
1
D1
D1
—
—
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
MPR081
D0
D0
D0
—
—
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
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