IQS156 ProxSense capacitive touch sensor

The IQS156 ProxSenseâ„¢ IC is a fully integrated sensor with market leading sensitivity provides a minimalist implementation ready for use in a large range of applications specialized applications.

Main Features

6 Channel input device
I2C data output
ATI: Automatic tuning to optimum sensitivity
Supply Voltage 3V to 5.5V
8 Power Modes (6ÂµA min)
Internal voltage regulator and
Large proximity detection range
Automatic drift compensation
Development and Programming tools available (VisualProxSense and USBP Small outline MSOP-10)

Applications

White goods and appliances
Office equipment, toys, sanitary ware
Flame proof, hazardous environment Human Interface Devices
Proximity detection that enables
Wake-up from standby applications
Replacement for electromechanical switches
GUI trigger on proximity detection

Source and Docs
Register Map
Data Captures (2)
Links (0)
Help and FAQ (0)

I2Cdevlib Device Source and Documentation

There is no library code or documentation for this device at this time.

Example Code

There is no available example code for this device at this time.

I²C Data Capture Dumps

Azoteq IQS156 initialization and touch (Anonymous, 6/5/2012)
Azoteq IQS158 initialization and touch (Anonymous, 5/30/2012)

External Links

There are no external links for this device at this time.

Help and FAQ

There are no questions and answers given for this device at this time.

Do you have a question that isn't answered here or elsewhere in the source code, documentation, or examples for this device? Ask away!

Register Map

	R/W	Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
[0x00] PRODUCT_NUM Product Number (PRODUCT_NUM @ 0x00) Register Bitfields [7:0] PRODUCT_NUM	RO	[7:0] PRODUCT_NUM PRODUCT_NUM @ 0x00 PRODUCT_NUM [7:0] Always 0x11 for IQS156.
[0x01] VERSION_NUM Version Number (VERSION_NUM @ 0x01) Register Bitfields [7:0] VERSION_NUM	RO	[7:0] VERSION_NUM VERSION_NUM @ 0x01 VERSION_NUM [7:0] Always 0x10 for IQS156.
[0x10] PROX_STATUS Proximity System Status (PROX_STATUS @ 0x10) Register Bitfields [4] NP_SEGMENT [3] LOW_POWER [2] ATI_BUSY [1] RF_NOISE [0] ZOOM	RO				[4] NP_SEGMENT	[3] LOW_POWER	[2] ATI_BUSY	[1] RF_NOISE	[0] ZOOM
[0x31] PROXIMITY_0	RO	[7] SHOW_RESET							[0] CH0
[0x35] TOUCH_0	RO		[6] CH6	[5] CH5	[4] CH4	[3] CH3	[2] CH2	[1] CH1
[0x39] HALT_0	RO		[6] CH6	[5] CH5	[4] CH4	[3] CH3	[2] CH2	[1] CH1	[0] CH0
[0x3D] CHAN_NUM Channel Number (CHAN_NUM @ 0x3D) Register Bitfields [7:0] CHAN_NUM	RO	[7:0] CHAN_NUM CHAN_NUM @ 0x3D Channel Number (CHAN_NUM [7:0])
[0x42] CUR_SAMPLE_H Current Sample High Byte (CUR_SAMPLE_H @ 0x42) Register Bitfields [15:0] CUR_SAMPLE - Current Sample	RO	[15:0] CUR_SAMPLE CUR_SAMPLE_H @ 0x42 Current Sample (CUR_SAMPLE [15:0])
[0x43] CUR_SAMPLE_L Current Sample Low Byte (CUR_SAMPLE_L @ 0x43)	RO
[0x83] LT_AVG_H Long-Term Average High Byte (LT_AVG_H @ 0x83) Register Bitfields [15:0] LT_AVG - Long-Term Average	RO	[15:0] LT_AVG LT_AVG_H @ 0x83 Long-Term Average (LT_AVG [15:0])
[0x84] LT_AVG_L Long-Term Average Low Byte (LT_AVG_L @ 0x84)	RO
[0xC4] COMP_CH0 Channel 0 Compensation Setting (COMP_CH0 @ 0xC4) Register Bitfields [5:0] COMP - Compensation	R/W			[5:0] COMP COMP_CH0 @ 0xC4 Compensation (COMP [5:0]) Can set the current samples outside the ATI routine limit if "ATI OFF" is not set. This event will trigger re-ATI.
[0xC5] COMP_CH1 Channel 1 Compensation Setting (COMP_CH1 @ 0xC5) Register Bitfields [5:0] COMP - Compensation	R/W			[5:0] COMP COMP_CH1 @ 0xC5 Compensation (COMP [5:0]) Can set the current samples outside the ATI routine limit if "ATI OFF" is not set. This event will trigger re-ATI.
[0xC6] COMP_CH2 Channel 2 Compensation Setting (COMP_CH2 @ 0xC6) Register Bitfields [5:0] COMP - Compensation	R/W			[5:0] COMP COMP_CH2 @ 0xC6 Compensation (COMP [5:0]) Can set the current samples outside the ATI routine limit if "ATI OFF" is not set. This event will trigger re-ATI.
[0xC7] COMP_CH3 Channel 3 Compensation Setting (COMP_CH3 @ 0xC7) Register Bitfields [5:0] COMP - Compensation	R/W			[5:0] COMP COMP_CH3 @ 0xC7 Compensation (COMP [5:0]) Can set the current samples outside the ATI routine limit if "ATI OFF" is not set. This event will trigger re-ATI.
[0xC8] COMP_CH4 Channel 4 Compensation Setting (COMP_CH4 @ 0xC8) Register Bitfields [5:0] COMP - Compensation	R/W			[5:0] COMP COMP_CH4 @ 0xC8 Compensation (COMP [5:0]) Can set the current samples outside the ATI routine limit if "ATI OFF" is not set. This event will trigger re-ATI.
[0xC9] COMP_CH5 Channel 5 Compensation Setting (COMP_CH5 @ 0xC9) Register Bitfields [5:0] COMP - Compensation	R/W			[5:0] COMP COMP_CH5 @ 0xC9 Compensation (COMP [5:0]) Can set the current samples outside the ATI routine limit if "ATI OFF" is not set. This event will trigger re-ATI.
[0xCA] COMP_CH6 Channel 6 Compensation Setting (COMP_CH6 @ 0xCA) Register Bitfields [5:0] COMP - Compensation	R/W			[5:0] COMP COMP_CH6 @ 0xCA Compensation (COMP [5:0]) Can set the current samples outside the ATI routine limit if "ATI OFF" is not set. This event will trigger re-ATI.
[0xCB] MULT_CH0 Multiplier Setting (MULT_CH0 @ 0xCB) Register Bitfields [4:3] SENS - Sensitivity Multiplier [2:0] COMP - Compensation Multiplier The Multiplier Setting register sets the Multiplier values for each channel, which determines the sensitivity, and compensation to reach ATI routine target.	R/W				[4:3] SENS MULT_CH0 @ 0xCB Sensitivity Multiplier (SENS [4:3])		[2:0] COMP MULT_CH0 @ 0xCB Compensation Multiplier (COMP [2:0])
[0xCC] TTH_CH1 CH1 Touch Threshold (TTH_CH1 @ 0xCC) Register Bitfields [7:5] TTH [4:0] MULT	R/W	[7:5] TTH			[4:0] MULT
[0xCD] TTH_CH2 CH2 Touch Threshold (TTH_CH2 @ 0xCD) Register Bitfields [7:5] TTH [4:0] MULT	R/W	[7:5] TTH			[4:0] MULT
[0xCE] TTH_CH3 CH3 Touch Threshold (TTH_CH3 @ 0xCE) Register Bitfields [7:5] TTH [4:0] MULT	R/W	[7:5] TTH			[4:0] MULT
[0xCF] TTH_CH4 CH4 Touch Threshold (TTH_CH4 @ 0xCF) Register Bitfields [7:5] TTH [4:0] MULT	R/W	[7:5] TTH			[4:0] MULT
[0xD0] TTH_CH5 CH5 Touch Threshold (TTH_CH5 @ 0xD0) Register Bitfields [7:5] TTH [4:0] MULT	R/W	[7:5] TTH			[4:0] MULT
[0xD1] TTH_CH6 CH6 Touch Threshold (TTH_CH6 @ 0xD1) Register Bitfields [7:5] TTH [4:0] MULT	R/W	[7:5] TTH			[4:0] MULT
[0xD2] PROX_TH_CH0 Proximity Sensitivity Settings (PROX_TH_CH0 @ 0xD2) Register Bitfields [5:0] PROX_TH	R/W			[5:0] PROX_TH
[0xD3] TTH_RANGE Touch Treshold Range Selection (TTH_RANGE @ 0xD3) Register Bitfields [6] CH6 [5] CH5 [4] CH4 [3] CH3 [2] CH2 [1] CH1	R/W		[6] CH6	[5] CH5	[4] CH4	[3] CH3	[2] CH2	[1] CH1
[0xD4] PROX_SETTINGS0 ProxSense Module Settings 0 (PROX_SETTINGS0 @ 0xD4) Register Bitfields [6] ATI_OFF [5] PARTIAL_ATI [1:0] BASE	R/W		[6] ATI_OFF PROX_SETTINGS0 @ 0xD4 ATI_OFF [6] If this bit is set, the ATI routine will not be able to run.	[5] PARTIAL_ATI PROX_SETTINGS0 @ 0xD4 PARTIAL_ATI [5] Disables the Base bits to set the base value for the Prox Channel.				[1:0] BASE PROX_SETTINGS0 @ 0xD4 BASE [1:0] Options 0 = 200 1 = 50 2 = 150 3 = 250 Controls the base value for the ATI routine of the Prox channel, if Partial ATI = 0.
[0xD5] PROX_SETTINGS1 ProxSense Module Settings 1 (PROX_SETTINGS1 @ 0xD5) Register Bitfields [5] ND_LEVEL [4] ND_ON [3] FORCE_HALT [2] REDO_ATI [1] RESEED	R/W			[5] ND_LEVEL PROX_SETTINGS1 @ 0xD5 ND_LEVEL [5] Options 0 = 25mV 1 = 50mV Selects the noise detect level.	[4] ND_ON PROX_SETTINGS1 @ 0xD5 ND_ON [4] Enables the noise detection.	[3] FORCE_HALT PROX_SETTINGS1 @ 0xD5 FORCE_HALT [3] Options 0 = LTA normal 1 = LTA halted Forces the Long Term Average to stop being calculated.	[2] REDO_ATI PROX_SETTINGS1 @ 0xD5 REDO_ATI [2] Forces the ATI routine to run when a '1' is written into this bit position. ATI OFF in D4 should not be set.	[1] RESEED PROX_SETTINGS1 @ 0xD5 RESEED [1] All channels are reseeded when a '1' is written into this bit position. The LTAâ€™s are set to 8 counts above the current samples.
[0xD6] PROX_SETTINGS2 ProxSense Module Settings 2 (PROX_SETTINGS2 @ 0xD6) Register Bitfields [7] ACK_RESET [6] WDT_OFF [5] SYNC_ON [4:3] HALT [2:0] LP	R/W	[7] ACK_RESET PROX_SETTINGS2 @ 0xD6 ACK_RESET [7] Clears the "RESET" indication flag.	[6] WDT_OFF PROX_SETTINGS2 @ 0xD6 WDT_OFF [6] Disables the watchdog timer.	[5] SYNC_ON	[4:3] HALT PROX_SETTINGS2 @ 0xD6 HALT [4:3] Options 0 = 20 seconds 1 = 40 seconds 2 = Never 3 = Permanent Sets the Halt time for the LTA (time before recalibration).		[2:0] LP PROX_SETTINGS2 @ 0xD6 LP [2:0] Options 0 = 9ms 1 = 128ms 2 = 256ms 3 = 384ms 4 = 512ms 5 = 768ms 6 = 1s 7 = 2s Controls the charge cycle time.
[0xD7] CHAN_ACTIVE Channel Enable (CHAN_ACTIVE @ 0xD7) Register Bitfields [6] CH6 [5] CH5 [4] CH4 [3] CH3 [2] CH2 [1] CH1 [0] CH0	R/W		[6] CH6	[5] CH5	[4] CH4	[3] CH3	[2] CH2	[1] CH1	[0] CH0
[0xD8] DEFAULT_COMMS_POINTER	R/W	[7:0] DEFAULT_COMMS_POINTER
[0xFC] DIRECT_ADDR	R/W	[7:0] DIRECT_ADDR
[0xFD] DIRECT_DATA	R/W	[7:0] DIRECT_DATA

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