SX8657IWLTRT Semtech, SX8657IWLTRT Datasheet - Page 48

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SX8657IWLTRT

Manufacturer Part Number
SX8657IWLTRT
Description
58T7570
Manufacturer
Semtech
Datasheet

Specifications of SX8657IWLTRT

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
7:4
3:0
7:0
3:0
6:5
7
6
5
4
7
4
Variable
Reserved
SETDLY
Variable
Reserved
Variable
XCONV
YCONV
Z1CONV
Z2CONV
Reserved
Variable
HAPTMODE
HAPTTYPEEN
HAPTRANGE
th
July 2011
Default
Default
Default
Default
0000
0000
0x00
0000
00
1
1
0
0
0
0
Table 16 : RegChanMsk (Addr 0x04)
Table 13 : RegTouch1 (Addr 0x01)
Table 14 : RegTouch2 (Addr 0x02)
Table 15 : RegTouch3 (Addr 0x03)
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
Defines the haptics load:
00 : OFF. Haptics block disabled.
01 : LRA
10 : ERM
11 : Reserved
Defines MIN prescaler value:
0 : 128
1 : 256
Resistive Touchscreen Controller with Proximity Sensing
48
SX8657/SX8658
Haptics Enabled 4/5-Wire
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