參數(shù)資料
型號(hào)： MPR121QR2
廠商： Freescale Semiconductor
文件頁數(shù)： 6/27頁
文件大小： 0K
描述： IC CTLR TOUCH SENSOR 20-QFN
產(chǎn)品培訓(xùn)模塊： MPR121: Low-Power Touch Sensor
產(chǎn)品目錄繪圖： MPR121QR2CT
特色產(chǎn)品： MPR121 Proximity Capacitive Touch Sensor Controller
標(biāo)準(zhǔn)包裝： 1
類型： 電容式，近程傳感器
輸入數(shù)/鍵： 12 鍵
評(píng)估套件： 可供
數(shù)據(jù)接口： I²C，串行
電源電壓： 1.71 V ~ 3.6 V
電流 - 電源： 29µA
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 20-UFQFN
供應(yīng)商設(shè)備封裝： 20-QFN（3x3）
包裝： 標(biāo)準(zhǔn)包裝
產(chǎn)品目錄頁面： 2808 (CN2011-ZH PDF)
其它名稱： MPR121QR2DKR
MPR121
Sensors
14
Freescale Semiconductor, Inc.
5.8
Filter and Global CDC CDT Configuration (0x5C, 0x5D)
Filter/Global CDC Configuration Register (0x5C)
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Read
FFI
CDC
Write
Filter/Global CDT Configuration Register (0x5D)
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Read
CDT
SFI
ESI
Write
Table 8. Bit Descriptions
Field
Description
FFI
First Filter Iterations - The first filter iterations field selects the number of samples taken as
input to the first level of filtering.
00 Encoding 0 - Sets samples taken to 6 (Default)
01 Encoding 1 - Sets samples taken to 10
10 Encoding 2 - Sets samples taken to 18
11 Encoding 3 - Sets samples taken to 34
CDC
Charge Discharge Current - Selects the global value of charge discharge current applied to
electrode. The maximum is 63
μA, 1 μA step.
000000 Encoding 0 - Disable Electrode Charging
000001 Encoding 1 - Sets the current to 1
μA
~
010000 Encoding 16 - Sets the current to 16
μA (Default)
~
111111 Encoding 63 - Sets the current to 63
μA
CDT
Charge Discharge Time - Selects the global value of charge time applied to electrode.
The maximum is 32
μs, programmable as 2 ^(n-2) μs.
000 Encoding 0 - Disables Electrode Charging
001 Encoding 1 - Time is set to 0.5
μs (Default)
010 Encoding 2 - Time is set to 1
μs
~
111 Encoding 7 - Time is set to 32
μs
SFI
Second Filter Iterations - Selects the number of samples taken for the second level filter
00 Encoding 0 - Number of samples is set to 4 (Default)
01 Encoding 1 - Number of samples is set to 6
10 Encoding 2 - Number of samples is set to 10
11 Encoding 3 - Number of samples is set to 18
ESI
Electrode Sample Interval - Selects the period between samples used for the second level
of filtering. The maximum is 128ms, Programmable to 2^n ms
000 Encoding 0 - Period set to 1 ms
001 Encoding 1 - Period set to 2 ms
~
100 Encoding 4 - Period set to 16 ms (Default)
~
111 Encoding 7 - Period set to 128 ms
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MPR121QR2 制造商:Freescale Semiconductor 功能描述:IC CAPACITIVE TOUCH SENSOR CTRL QFN-20
MPR121QR2-CUT TAPE 制造商:Freescale 功能描述:MPR121 Series 3.6 V 29 ? Proximity Capacitive Touch Sensor Controller - QFN-20
MPR1487 制造商:MISC. COMMERCIAL HRD 功能描述:
MPR181EJ 功能描述:電容觸摸傳感器 8 POSITION TOUCH PAD RoHS:否 制造商:Microchip Technology 電源電壓: 通道數(shù)量: 封裝 / 箱體: 尺寸: 溫度范圍:
MPR181EJR2 功能描述:電容觸摸傳感器 8 POSITION TOUCH PAD RoHS:否 制造商:Microchip Technology 電源電壓: 通道數(shù)量: 封裝 / 箱體: 尺寸: 溫度范圍:
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