MAX11800_10 Datasheet, PDF (52/57 Pages) Maxim Integrated Products – Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I2C/SPI Interface

Low-Power, Ultra-Small Resistive Touch-Screen
Controllers with I²C/SPI Interface
Aperture Configuration Register (0x09) (MAX11800/MAX11801)
NAME
DEFAULT
BIT 7
0
BIT 6
BIT 5
APRX[3:0]
0
0
BIT 4
0
BIT 3
0
BIT 2
BIT 1
APRY[3:0]
0
0
BIT 0
0
BIT
NAME
DESCRIPTION
7:4
APRX[3:0]
±ΔX for aperture checking
0000 = 2^-1 LSB = aperture checking disabled
0001 = 2^(1-1) LSB = ±1 LSB
0010 = 2^(2-1) LSB = ±2 LSB
...^{0011 = 2(3-1) LSB = ±4 LSB}
1001 = 2^(9-1) LSB = ±256 LSB
1010 = 2^(10-1) LSB = ±512 LSB
1011 = 2^(11-1) LSB = ±1024 LSB
1100 = 2^(12-1) LSB = ±2048 LSB
1101 to 1111 = aperture checking disabled
3:0
APRY[3:0]
±ΔY for aperture checking
APRY[3:0] has the same range as APRX[3:0] above.
Note: These aperture settings apply in autonomous conversion mode only and control whether data meets the criteria for logging
into the FIFO.
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