參數(shù)資料
型號： QT60168C-ASG
廠商： Atmel
文件頁數(shù)： 15/28頁
文件大?。?/td> 0K
描述： IC TOUCH SENSOR 16KEY 32TQFP
標(biāo)準(zhǔn)包裝： 250
系列： QMatrix™, QProx™
類型： 電容性
輸入數(shù)/鍵： 16 鍵
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(yīng)商設(shè)備封裝： 32-TQFP（7x7）
包裝： 托盤
配用： 427-1087-ND - BOARD EVAL QT60248-AS QMATRIX
Table 5.1 Setups Block
Setups data is sent from the host to the QT in a block of hex data. The block can only be loaded in Setups mode following two se quential 0x01 commands (page 12). All
devices this datasheet pertain to have the same block length. Refer also to Table 5.3, page 23 for further details, and all of Section 5.
101
Block length
21
-
8
0..255
1
HCRC
Host CRC byte
100
8
21
Lower limit of acceptable signal; below this value, device declares an error.
The low order byte should be sent first.
100
24
16
0..2048
2
LSL
Lower signal Limit
98
7
20
Lower nibble = burst spacing
1
24
4
BS = 0..11
1
BS
Burst spacing
97
6
20
Bit 6 = Mains sync, negative edge, 1 = enabled; default = 0 (off)
0
24
1
MSYNC = 0, 1
1
MSYNC
Mains Sync
96
5
20
Bits 5, 4: = BL, via LUT, default = 48 (setting =2)
Bit 6 = AKS, 1 - enabled
Bit 7 = Scope sync, 1 = enabled
2
0
1
2
1
BL = 0, 1, 2, 3
AKS = 0, 1
SSYNC = 0, 1
24
BL
AKS
SSYNC
Burst Length
AKS
Scope Sync
72
4
19
Range is in 0.5 sec increments; 0 = infinite; default = 10s (operand = 20)
Range is { infinite, 0.5...127s }; 255 is illegal to use
20
1
8
0..254
24
NRD
Neg recal delay
48
3
19
Lower nibble = Normal DI Limit, values same as operand (0 = disables key)
Upper nibble = Fast DI Limit, values same as operand (0 does not work)
2
5
1
4
NDIL = 0..15
FDIL = 0..15
24
NDIL
FDIL
Normal DI Limit
Fast DI Limit
24
2
18
Lower nibble = Neg Threshold - take operand and add 4 to get value
Upper nibble = Neg Drift comp - Via LUT
6
10
1
4
NTHR = 0..15
NDRIFT = 0..15
24
NTHR
NDRIFT
Neg thresh
Neg Drift Comp
0
1
Page
Description
Default
Value
Key
Scope
Bits
Valid range
Bytes
Symbol
Parameter
Byte
Item
#
CRC Note: A CRC calculator for Windows is available free of charge from Quantum Research on request.
Table 5.2 Key Mapping
Some commands return bitfields related to keys. For example, command 0x07 (report all keys) returns 3 bytes containing flag bits, one per key, to indicate which keys are reporting
touches. The following table shows the byte and bit order of the keys. The table contains the key number reported in each bit.
The key number is related to the X and Y scan lines which address each particular key. Each byte in the return stream represents one set of keys along a Y line, ie up to 8 keys.
Thus, key 0 is at location X0,Y0 and key 19 is at location X3,Y2. .
Note: Byte 0 is returned first.
lQ
22
QT60248-AS R4.02/0405
16
17
18
19
20
21
22
23
2
8
9
10
11
12
13
14
15
1
0
1
2
3
4
5
6
7
0
Byte
(Y line)
0
1
2
3
4
5
6
7
Bit (X line)
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