參數(shù)資料
型號: QT60248C-ASG
廠商: Atmel
文件頁數(shù): 14/28頁
文件大小: 0K
描述: IC TOUCH SENSOR 24KEY 32TQFP
標準包裝: 250
系列: QMatrix™, QProx™
類型: 電容性
輸入數(shù)/鍵: 24
分辨率(位): 9,11 b
評估套件: 可供
數(shù)據(jù)接口: 串行,SPI?
電源電壓: 3 V ~ 5 V
電流 - 電源: 25mA
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 32-TQFP
供應商設備封裝: 32-TQFP(7x7)
包裝: 托盤
配用: 427-1087-ND - BOARD EVAL QT60248-AS QMATRIX
Shorter spacings result in a faster response time to touch;
longer spacings permit higher burst lengths and longer
conversion times but slow down response time.
BS Default value:
1 (500s)
BS Possible range:
1..11 (500s .. 3ms)
5.12 Lower Signal Limit - LSL
This Setup determines the lowest acceptable value of signal
level for all keys. If any key’s reference level falls below this
value, the device declares an error condition in the status
bits.
Testing is required to ensure that there are adequate
margins in this determination. Key size, shape, panel
material, and burst length all factor into the detected signal
levels.
This parameter occupies 2 bytes of the setups table. The low
order byte should be sent first.
LSL Default value:
100
LSL Possible range:
0..2047
5.13 Host CRC - HCRC
The setups block terminates with a 8-bit CRC, HCRC, of the
entire block. The formulae for calculating this CRC is shown
in Section 7.
lQ
21
QT60248-AS R4.02/0405
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