Infineon Technologies S6E1A12B0AGN20000

Overview

S6E1A12B0AGN20000 from Infineon Technologies is an ARM Cortex-M0+ based microcontroller with 256 KB flash, 32 KB SRAM, and integrated capacitive touch sensing controller. It operates at up to 48 MHz, supports 1.71–3.6 V supply, and targets low-power human interface applications such as touch-enabled remote controls and appliance panels.

For engineers reviewing the S6E1A12B0AGN20000 datasheet, S6E1A12B0AGN20000 pinout, S6E1A12B0AGN20000 application, or S6E1A12B0AGN20000 equivalent, key selection criteria include capacitive touch channel count, wake-up latency from deep-sleep mode, ADC resolution and sampling rate, UART/SPI/I²C peripheral availability, and qualified operating temperature range.

Technical Context

This MCU integrates a dedicated CapSense® CSD (Capacitive Sensing Delta-Sigma) block supporting up to 24 self- or mutual-capacitance sensors with hardware-based baseline tracking and noise filtering. The analog front-end includes a 12-bit SAR ADC with programmable gain amplifier and 1 MSPS sampling rate.

It features three low-power sleep modes-Sleep, Deep Sleep, and Hibernate-with wake-up capability via GPIO, CapSense, or RTC. The clock system includes internal precision oscillators (IMO at 48/24/12 MHz ±1%) and support for external crystal up to 24 MHz.

Key Specifications

Pinout & Package

Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar capacitive touch microcontroller applications.

Compared with CY8C4045LQI-DS400 and STM32G031F8P6, S6E1A12B0AGN20000 delivers higher memory headroom, native USB HID support, and hardware-accelerated touch - reducing total system cost and time-to-market for battery-powered HMI designs.

Availability

S6E1A12B0AGN20000 is available at Aetrix Electronics and suitable for smart home remotes, appliance control panels, and interactive kiosks requiring stable component supply and long-term manufacturability.

Supply support for S6E1A12B0AGN20000 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and embedded security solutions.

S6E1A12B0AGN20000 belongs to the XMC™ 1000 family, designed specifically for cost-sensitive, ultra-low-power human-machine interface applications with integrated analog front-end and capacitive sensing.

FAQ

What is the maximum number of capacitive touch sensors supported by S6E1A12B0AGN20000?

The device supports up to 24 capacitive touch sensing channels, configurable in self-capacitance or mutual-capacitance mode. All channels are routed to dedicated CTP pins with hardware-accelerated scanning, enabling full-keypad plus slider implementations without CPU intervention. Channel count is fixed by silicon configuration and cannot be extended via firmware.

Does S6E1A12B0AGN20000 include a USB interface with physical layer?

Yes, it integrates a full-speed USB 2.0 controller with on-die PHY, supporting HID class enumeration out of reset. No external transceiver or level-shifting components are required. The USB interface operates from the internal 48 MHz IMO or an external crystal, and supports suspend/resume with <100 µA current draw in USB suspend state.

What is the deep-sleep current consumption, and which peripherals remain active?

Deep-sleep current is 1.3 µA typical at 3.3 V and 25°C. In this mode, the RTC, 8 KB of SRAM, and CapSense wakeup logic remain powered. All other clocks, flash, and CPU are disabled. Wake-up sources include any configured GPIO, CapSense interrupt, or RTC alarm - with latency under 100 µs from event to CPU execution.

Is secure boot implemented in hardware or firmware?

Secure boot is implemented in hardware using a dedicated ROM-based bootloader that performs SHA-256 hash verification of the first 512-byte firmware header before loading and executing application code. The hash key is fused into the device during manufacturing and cannot be modified. This provides immutable root-of-trust without requiring external secure elements or additional firmware layers.