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PDF IQS232 Data sheet ( Hoja de datos )
| Número de pieza | IQS232 | |
| Descripción | Configurable 2 Channel sensor | |
| Fabricantes | Azoteq | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de IQS232 (archivo pdf) en la parte inferior de esta página. Total 34 Páginas | ||
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IQ Switch®
ProxSense® Series
IQS232 Datasheet - Configurable 2 Channel sensor with
Compensation for Sensitivity Reducing Objects
Unparallelled Features:
J Sub 4 µA current consumption
J Automatic tuning for optimal operation in various environments & compensation against sensi-
tivity reducing objects
The IQS232 ProxSense® IC is a fully integrated two channel capacitive contact and proximity sensor
with market leading sensitivity and automatic tuning of the sense electrodes. The IQS232 provides
a minimalist implementation requiring as few as 2 external components. The device is ready for
use in a large range of applications while programming options allow customisation in specialised
applications.
Main features:
J 2 Channel input device
J Differentiated Touch and Distributed Proximity Electrode
J ATI: Automatic tuning to optimum sensitivity
J Supply Voltage1.8 V to 3.6 V
J Internal voltage regulator and reference capacitor
J OTP options available
J Direct (logic level) and serial data output
J Low Power Modes (sub 4 µA min)
J Adjustable Proximity & Touch Thresholds
J Automatic drift compensation
J Development and Programming tools available
J Small and cost effective SO-8 package
Applications:
J GUI trigger on proximity detection.
J White goods and appliances
J Remote Controls
J Office equipment, toys, sanitary ware
J Flame proof, hazardous environment Hu-
man Interface Devices
J Proximity detection that enables back light-
ing activation (Patented)
J Wake-up from standby applications
J Replacement for electro mechanical
switches
Copyright ©
IQS232 Prelimanary Datasheet V1.00
Azoteq
1of 33
Free Datasheet http://www.datasheet4u.com/
1 page  
IQ Switch®
ProxSense® Series
1 Functional Overview
The IQS232 is a two channel capacitive proximity and touch sensor featuring an internal voltage
regular and reference capacitor (Cs). The device has two dedicated input pins for the connection
of the sense electrodes (CX). Two output pins for Touch (for each channel) detection and one
output (PO) for proximity detection. The output pins can be configured as Logic outputs or in a
serial data streaming option on TO0 (data) and TO1 (clock). The device automatically tracks slow
varying environmental changes via various filters, detect noise and has an automatic Auto Tuning
Implementation (ATI) to tune the device for optimal sensitivity.
1.1 Pin Outs
GND
CX0
VDDHI
VREG
CX1
TO1/SCL
TO0/SDA
PO0/RF/
RDY
Figure 1.1: IQS232 pin-out.
The IQS232 is pin compatible with the IQS132, but has different electrical characteristics. Refer to
Section 10.
Table 1.1: IQS232 Pin-outs
Pin Stand Alone Streaming
Function
1 GND
GND
Ground
2 CX0
CX0 Sense Electrode
3 VDDHI
VDDHI
Power Input
4 VREG
VREG
Regulator Pin
5 PO/RF RDY/RF Proximity Output
6 TO0
SDA
Touch Output
7 TO1
SCL Touch Output
8 CX1
CX1 Sense Electrode
Copyright ©
Azoteq
IQS232 Prelimanary Datasheet V1.00
5of 33
Free Datasheet http://www.datasheet4u.com/
5 Page 
IQ Switch®
ProxSense® Series
Table 6.2: User Selectable Configuration Options: Bank 1 (Full ATI)
tHALT1 tHALT0 Sys Use TTHR2 TTHR1 TTHR0 BASE1 BASE0
bit 7
Bank 1 - Full ATI
bit 0
Bank 1: bit 7:6
Bank 1: bit 5
Bank 1: bit 4:2
Bank 1: bit 1:0
tHALT1:tHALT0: Halt time of Long Term Average
00 = 20 seconds
01 = 40 seconds
10 = Never
11 = Always (Prox on 40)
System Use
CH2 TTHR2:TTHR0: Touch Thresholds on CH2
000 = 4/64
001 = 1/64 (Most Sensitive)
010 = 2/64
011 = 8/64
100 = 12/64
101 = 16/64
110 = 24/64
111 = 32/64 (Least Sensitive)
BASE1:BASE0: Proximity (CH0) Base Value
00 = 200 (150 with BASESEL set to Alternative)
01 = 50 (350 with BASESEL set to Alternative)
10 = 100 (500 with BASESEL set to Alternative)
11 = 250 (700 with BASESEL set to Alternative)
Section 7.5
Section 7.3
Section 7.6
Copyright ©
Azoteq
IQS232 Prelimanary Datasheet V1.00
11of 33
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 34 Páginas | |
| PDF Descargar | [ Datasheet IQS232.PDF ] | |
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