TCAE32 Features

TCAE32 is an AEC-Q100 qualified low-power CMOS 32-bit Arm® Cortex®-M0 MCU, designed for force sensing and capacitive touch. It supports 8-channel force sensing detection, and up-to-26 channel capacitive touch detection.
The MCU integrates Wheatstone bridge AFE circuits, including low noise LDO (LDOVS), two-stage PGA with up to 1024x gain, 14-bit high resolution ADC, and offset canceling circuit. The PGA can cancel offset voltage while amplify weak signal variance (i.e.<10uV) which is interested, before the signal enters the ADC. The device also integrates TinyTouch module to implement self-capacitance touch sensing with detection algorithm.

32-bit Low Power Arm® Cortex®-M0 CPU core

Memory

64KB Flash
8KB SRAM

Clocks

On-chip 16-MHz RC oscillator
On-chip 32-MHz clock with frequency doubler
On-chip 32-KHz RC oscillator

16-bit RTC

Up to 4 different timeout thresholds
Periodical timeout events once enabled

UART

Full duplex series communication
Support LIN Slave function

Print UART, Transmission only for debug

I2C

Standard speed（100KHz） and fast speed（ 400KHz）
Master and slave mode

SPI

Master and slave mode

DMA

8 channels for I2C/UART0/SPI/ADC/TinyTouch

GPT0/1/2/3/4

16-bit general purpose timer/counter
Multiple modes supporting PWM generation

TinyTouch

Integrates two touch blocks with run in parallel
With external reference capacitor
26 channels for 48-pin package and 19 channels for 32-pin package
Comparator based or ADC based detection
Configurable frequency hopping

ADC

14-bit SAR ADC
Sampling rate up to 1MSPS
8 differential or 16 single-end external channels
2-stage PGA, up to 1024x gain
Offset voltage cancellation

LDOVS

8-level adjustable voltages from 1.8V to 3.1V
15mA minimum

On-chip temperature sensor

GPIO

Up to 45 GPIOs for QFN48 package
Up to 29 GPIOs for QFN32 package

UUID, 96-bit unique identifier

Low- power modes

IDLE mode
SLEEPWALK mode
SLEEP mode

Tinywork® mechanism

POR

LVD

Watchdog WDG

2-pin Serial Wire Debug Interface (SWD)

AEC-Q100 Grade2 Qualified

Operating voltage range: 2.8V~5.5V

Package： QFN32, QFN48

ESD: 8KV (HBM)

TCAE32芯片应用方案介绍

TCAE32芯片Datasheet