SX8656IWLTRT Semtech, SX8656IWLTRT Datasheet - Page 49

• Manufacturer Part Number: SX8656IWLTRT
• Description: 58T7568
• Manufacturer: Semtech

Specifications of SX8656IWLTRT

• Controller Type: Resistive Touch Screen
• Ic Interface Type: I2C, Serial
• Supply Voltage Range: 2.3V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• No. Of Pins: 20
• Resolution (bits): 12bit

ADVANCED COMMUNICATIONS & SENSING
Bits
Bits
Bits
Bits
Rev 1 – 25
1:0
7:4
3:0
7:0
3:0
7
6
5
4
7
FILT
Variable
Reserved
SETDLY
Variable
Reserved
Variable
XCONV
YCONV
Z1CONV
Z2CONV
Reserved
Variable
HAPTMODE
th
July 2011
Default
Default
Default
Default
0000
0000
0x00
0000
00
1
1
0
0
0
Table 16 : RegChanMsk (Addr 0x04)
Table 13 : RegTouch1 (Addr 0x01)
Table 14 : RegTouch2 (Addr 0x02)
Table 15 : RegTouch3 (Addr 0x03)
Defines the channel filtering algorithm:
00 : OFF (Nfilt = 1)
01 : 3 sample averaging (Nfilt = 3)
10 : 5 sample averaging (Nfilt = 5)
11 : 3 sample averaging after removal of extreme values (Nfilt = 7)
Description
Defines the bias settling time for each channel’s subsequent conversion
(i.e. when filtering is enabled):
0000 : 0.5 us
0001 : 1.1 us
0010 : 2.2 us
0011 : 4.4 us
0100 : 8.9 us
0101 : 17.8 us
0110 : 35.5 us
0111 : 71.0 us
1000 : 142 us
1001 : 284 us
1010 : 568 us
1011 : 1.14 ms
1100 : 2.27 ms
1101 : 4.55 ms
1110 : 9.09 ms
1111 : 18.19 ms
Values above assume typical FOSCH, else vary accordingly.
Description
Description
Enables X channel conversion:
0 : OFF
1 : ON
Enables Y channel conversion:
0 : OFF
1 : ON
Enables Z1 channel conversion:
0 : OFF
1 : ON
Enables Z2 channel conversion:
0 : OFF
1 : ON
Description
Defines the haptics mode/input:
0 : PWM
1 : I2C
Resistive Touchscreen Controller with Proximity Sensing
49
SX8654/SX8655/SX8656
Haptics Enabled 4/5-Wire
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