MGC3140 datasheet(28/49 Pages) MICROCHIP

28 / 49 page

Important: It is recommended to assign Rx channels 1 to 4 in most application designs, only

using RX0 if a fifth Rx electrode is required.

6.4.6

Analog-to-Digital Converter (ADC)

As outlined in the previous section, each Rx channel features a dedicated ADC with a trigger derived

from the internal clock. ADC samples are synchronous with twice the Tx transmit frequency.

6.4.7

Signal Processing Unit (SPU)

The MGC3140 features a Signal Processing Unit (SPU) to control the hardware blocks and process the

advanced DSP algorithms included in the GestIC Library. It provides filtered sensor data, continuous

position information and recognized gestures to the application host. The host combines the information

and controls its application.

6.4.8

Parameters Storage

The MGC3140 provides an embedded 128 kB Flash memory which is dedicated for the GestIC Library

and storage of the individual configuration parameters. These parameters have to be set according to the

individual electrode design and application. The GestIC Library and parameters are loaded into

MGC3140 with the provided software tools or, alternatively, via GestIC Library messages by the

application host.

MGC3140 数据表(PDF) 28 Page - Microchip Technology