MAX11800_1010 Datasheet, PDF (49/59 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
Table 21. Measurement Commands
HEX
0x70h
0x72h
0x74h
0x76h
0x78h
0x79h
0x7Ah
0x7Bh
0x7Ch
0x7Dh
0x7Eh
0x7Fh
ACCESS
Write
Write
Write
Write
Write
Write
Write
Write
Write
Write
Write
Write
PAIRABLE
No
No
No
No
No
No
No
No
No
No
No
No
COMMAND LENGTH
FUNCTION
8
X, Y = combined command measurement
8
X, Y, Z1 = combined command measurement
8
X, Y, Z1, Z2 = combined command measurement
8
AUX = conversion
8
X = measurement, CONT = 0
8
X = measurement, CONT = 1
8
Y = measurement, CONT = 0
8
Y = measurement, CONT = 1
8
Z1 = measurement, CONT = 0
8
Z1 = measurement, CONT = 1
8
Z2 = measurement, CONT = 0
8
Z2 = measurement, CONT = 1
General Status Register (0x00) (Read Only)
BIT
NAME
DEFAULT
7
ADC_BUSY
0
6
LPM
0
5
TDM
0
4
SCAN
0
User Configuration Registers
3
FIFO_OVR
0
2
FIFO_INT
0
1
EDGE_INT
0
0
CONT_INT
0
BIT
NAME
DESCRIPTION
MAX11800/ MAX11802/
MAX11801 MAX11803
0: ADC is not in ACQ or CONV state
7
ADC_BUSY 1: ADC is in ACQ or CONV state
This is for INTERNAL TEST only
Yes
Yes
6
LPM
0: Device is not in LPM or standby mode
1: Device is in LPM or standby mode
Yes
Yes
0: Device is not in TDM mode
5
TDM
1: Device is in TDM mode
Yes
Yes
0: No scan or measurement in progress
4
SCAN
1: Scan or measurement in progress
Yes
Yes
Also indicates presence of a continuous touch in autonomous
0: FIFO overflow has not occurred
3
FIFO_OVR 1: FIFO has overflowed since last readback operation
Enabled only if AUTO = 1
0: No unread data in FIFO
2
FIFO_INT 1: New data available in FIFO
Enabled only if AUTO = 1
0: No touch event in progress
1
EDGE_INT 1: Touch event in progress (cleared on ETAG = 10)
Enabled only if AUTO = 0 and EDGE_IRQ = 1
0: No touch present
0
CONT_INT 1: Touch present (or conversion in progress)
Enabled only if AUTO = 0 and EDGE_IRQ = 0
Yes
No
Yes
No
Yes
Yes
Yes
Yes
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