ATSAMD11C14A-SSNT

Overview

The ATSAMD11C14A-SSNT is a Microchip Technology microcontroller featuring an ARM Cortex-M0+ processor with a maximum frequency of 48MHz. It includes 16KB of in-system self-programmable Flash and 4KB of SRAM. The device operates within a voltage range of 1.62V to 3.63V and supports an industrial temperature range from -40°C to +105°C. It provides up to 12 programmable I/O pins, a full-speed USB 2.0 interface, three Serial Communication Modules (SERCOM), a 12-bit ADC with up to 5 channels, and a Peripheral Touch Controller supporting up to 12 capacitive touch channels.

Feature Summary

• Supports low-power operation through idle and standby sleep modes, including SleepWalking capabilities for peripheral-initiated wake-ups.
• Integrates a six-channel Direct Memory Access Controller and a six-channel Event System for efficient inter-peripheral signaling without CPU intervention.
• Features a crystal-less full-speed USB 2.0 device interface capable of operating from internal RC oscillators.
• Includes a Peripheral Touch Controller for capacitive sensing applications such as buttons, sliders, and proximity detection.

Applications

• Low-power wearable devices requiring extended battery life
• USB-enabled consumer electronics and peripherals
• Capacitive touch user interfaces for appliances and controls
• Industrial monitoring systems operating in wide temperature environments

Procurement Notes

Verify the specific ordering suffix 'N' confirms tape and reel packaging rather than tray delivery. Confirm the 'U' package grade indicates the -40°C to +105°C industrial temperature rating. Ensure the 'SS' designation matches the required SOIC-14 footprint dimensions and pin pitch for PCB layout compatibility.

Selection Notes

Select this component when a compact 14-pin solution is required alongside USB connectivity and capacitive touch support. Compare against SAMD11D variants if additional GPIO or ADC channels are necessary. Consider the trade-off between the limited 12 I/O count and the reduced package size for space-constrained designs.

Part Context

This part belongs to the Atmel SMART SAM D11 series of 32-bit microcontrollers based on the ARM Cortex-M0+ core. The series offers hex-compatible code migration paths across different pin counts and memory configurations. It shares identical peripheral modules and linear address maps with other devices in the family, facilitating scalable product development.

Replacement Considerations

ATSAMD11C14A-SSUT: Identical electrical specifications and pinout; differs only in packaging carrier type (Tape & Reel vs. Tape & Reel). Verify that the specific reel configuration meets assembly line requirements.

FAQ

Can the ATSAMD11C14A-SSNT operate without an external crystal for its USB interface?

Yes, the device features a full-speed crystal-less USB 2.0 device interface that can run from internal RC oscillators.

What is the maximum number of capacitive touch channels supported by this specific package?

The 14-pin SOIC variant supports up to 12 capacitive touch channels via the Peripheral Touch Controller.

Does the device support in-system programming?

Yes, the Flash program memory can be reprogrammed in-system through the two-pin Serial Wire Debug (SWD) interface.