RAK14002 WisBlock Touch Sensor Module Datasheet
Overview
Description
The RAK14002 WisBlock Touch Sensor module is a 3-channel Capacitive Touch Sensor. This module is based on the Microchip CAP1293 Capacitive Touch Sensor, and it has a ready to use SW library and tutorial makes it easy to build a touchpad, swipe detector.
Features
- Three (3) Capacitive Touch Sensor Inputs
- Low Power Operation 50 µA quiescent current in standby mode
- Proximity Detection
- Multiple Button Pattern Detection
- Power button support
- 3.3 V power supply
- I2C Compliant Communication Interface
- Chipset: Microchip CAP1293
- Module size: 25 x 35 mm
Specifications
Overview
Mounting
The RAK14002 module can be mounted on the IO slot of the WisBlock Base board. Figure 1 shows the mounting mechanism of the RAK14002 module on a WisBlock Base module, such as the RAK5005-O.
Figure 3360: RAK14002 MountingHardware
The hardware specification is categorized into five parts. It shows the chipset of the module and discusses the pinouts and its corresponding functions and diagrams. It also covers the electrical and mechanical parameters that include the tabular data of the functionalities and standard values of the RAK14002 WisBlock Touch Sensor Module.
Chipset
| Vendor | Part number |
|---|---|
| Microchip | CAP1293 |
The default 7-bit slave address is 0x50.
Pin Definition
The RAK14002 WisBlock module comprises a standard 40-pin WisConnector. The WisConnector allows the RAK14002 module to be mounted on a WisBlock Base board, such as RAK5005-O. The pin order of the connector and the pinout definition is shown in Figure 2.
- I2C related pins, IO6, VDD, and GND are connected to this module.
- IO6 interrupt output pin, Low active, internal pull-up.
Figure 3361: RAK14002 WisBlock Touch Sensor Module PinoutElectrical Characteristics
Recommended Operating Conditions
| Symbol | Description | Min. | Nom. | Max. | Unit |
|---|---|---|---|---|---|
| VDD | Power supply for the module | 3.0 | 5.5 | V | |
| VPOR | Power-On reset voltage | 1 | 1.3 | V | |
| IDD | Capacitive Sensing Active | - | 500 | 750 | uA |
| IDSLEEP_3V | Deep Sleep State current | - | 5 | - | uA |
| ISTBY_DEF | Standby state active 70 ms cycle time | 120 | 170 | uA | |
| ISTBY_LP | Standby state active 140 ms cycle time | 50 | uA |
Mechanical Characteristics
Board Dimensions
Figure 3 shows the dimensions and the mechanic drawing of the RAK14002 module.
Figure 3362: RAK14002 WisBlock 3-channel Touchpad Mechanic DrawingWisConnector PCB Layout
Figure 3363: WisConnector PCB footprint and recommendationsSchematic Diagram
Figure 3364: RAK14002 WisBlock 3-channel Touchpad Schematic
