ATSAML11E14A-MFT - 32MHz Cortex-M23 MCU 16KB Flash | Microchip
MPN: ATSAML11E14A-MFT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.99 | $2.99 |
| 10 | $2.69 | $26.90 |
| 100 | $2.39 | $239.00 |
| 500 | $2.15 | $1,075.00 |
| 1,000 | $1.95 | $1,950.00 |
| 5,000 | $1.78 | $8,900.00 |
ATSAML11E14A-MFT Overview
A microcontroller (MCU) is a compact integrated circuit that combines a CPU core, volatile and non-volatile memory, and programmable peripherals on a single die. The Cortex-M23 family belongs to the ARMv8-M baseline architecture, optimized for energy efficiency and deterministic interrupt response, making it ideal for battery-powered and secure embedded designs. The SAM L11 extends this baseline with ARM TrustZone technology for hardware-enforced isolation between secure and non-secure code, placing it at the intersection of low-power MCUs and security-focused microcontrollers in the broader semiconductor taxonomy.
Key features of the ATSAML11E14A-MFT include an integrated crypto accelerator supporting AES, SHA, and True Random Number Generator (TRG), secure key storage, chip-level tamper resistance, and a peripheral touch controller (PTC). It provides multiple SERCOM interfaces, a 12-bit ADC, a 10-bit DAC, operational amplifiers, and analog comparators, enabling full signal-chain integration on a single device.
At the architectural level, the SAM L11 leverages the Cortex-M23 core with a single-cycle multiplier and hardware divide, supported by the Microchip MPLAB X and Atmel Studio ecosystem. The device is qualified to industrial temperature ranges up to +125 C, supporting demanding automotive and industrial environments. Its low-power SleepWalking peripherals and Event System allow autonomous peripheral interaction without CPU wake-up, extending battery life in always-on IoT nodes.
Typical applications include secure IoT endpoints, smart metering, wireless sensor nodes, industrial control modules, secure payment terminals, and low-power edge devices requiring hardware root-of-trust. It is also used in automotive body electronics and connected lighting where deterministic secure boot is required.
When designing with the ATSAML11E14A-MFT, ensure the 32-VQFN (5x5 mm) thermal pad is properly soldered to a sufficient copper pour for heat dissipation. Use the TrustZone linker to partition secure and non-secure code regions, and configure the Secure Access Manager (SAM) to enforce peripheral access policy.
This page synthesizes distributor pricing, same-brand and cross-brand drop-in alternatives in the 32-VQFN footprint, and practical design notes not aggregated on a single manufacturer page, giving engineers a faster cross-reference experience.
Drop-in alternatives for ATSAML11E14A-MFT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATSAML11E14A-MFT (same form factor and footprint) — differing in Core Architecture, Package, Security Features, ADC, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAML11E15A-MFT
✅ Drop-In✓ In Stock
$1.89 / Unit
View Datasheet →ATSAML11D14A-MFT
✅ Drop-In✓ In Stock
$1.65 / Unit
View Datasheet →ATSAML11E14A-MUT
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →ATSAML11E14A-MU
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →ATSAML11D15A-MU
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →ATSAML10E15A-MFT
✅ Drop-In✓ In Stock
$1.67 / Unit
View Datasheet →ATSAML11E14A-MFT Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M23 (32-bit, single-core) |
| Core Architecture | ARMv8-M Baseline with TrustZone-M |
| Maximum Clock Frequency | 32 MHz |
| Program Memory (Flash) | 16 KB (16K x 8) |
| SRAM | 8 KB |
| Active Mode Current | < 25 uA/MHz |
| Sleep Mode Current | < 100 nA |
| Operating Temperature Range | -40 C to +125 C (125 C, industrial) |
| Package | 32-pin VQFN (5x5 mm) |
| Mounting Type | Surface Mount |
| Security Features | TrustZone-M, AES, SHA, TRG, secure key storage, tamper detection |
| ADC | 12-bit |
| DAC | 10-bit |
| Peripheral Touch (PTC) | Yes |
| SERCOM | Yes (multiple instances) |
| RoHS Status | Compliant |
ATSAML11E14A-MFT Pin Configuration
| Pin 1 | PA00 — GPIO / XIN / SERCOM0 / ADC[0] |
| Pin 2 | PA01 — GPIO / XOUT / SERCOM0 / ADC[1] |
| Pin 3 | PA02 — GPIO / AIN0 / DAC / SERCOM0 / ADC[2] |
| Pin 4 | PA03 — GPIO / AIN1 / SERCOM0 / ADC[3] / REF |
| Pin 5 | GND — Ground |
| Pin 6 | VDDIO — I/O supply voltage |
| Pin 7 | VDD — Core supply voltage |
| Pin 8 | PA04 — GPIO / VREF / SERCOM0 / ADC[4] |
| Pin 9 | PA05 — GPIO / SERCOM0 / ADC[5] |
| Pin 10 | PA06 — GPIO / SERCOM0 / ADC[6] |
| Pin 11 | PA07 — GPIO / SERCOM0 / ADC[7] |
| Pin 12 | PA08 — GPIO / SERCOM0 / NMI |
| Pin 13 | PA09 — GPIO / SERCOM0 |
| Pin 14 | PA10 — GPIO / SERCOM0 |
| Pin 15 | PA11 — GPIO / SERCOM0 |
| Pin 16 | PA14 — GPIO / SERCOM2 / TC[0] |
| Pin 17 | PA15 — GPIO / SERCOM2 / TC[1] |
| Pin 18 | PA16 — GPIO / SERCOM1 / TC[2] |
| Pin 19 | PA17 — GPIO / SERCOM1 / TC[3] |
| Pin 20 | PA18 — GPIO / SERCOM1 |
| Pin 21 | PA19 — GPIO / SERCOM1 |
| Pin 22 | PA20 — GPIO / SERCOM3 / I2C |
| Pin 23 | PA21 — GPIO / SERCOM3 / I2C |
| Pin 24 | PA22 — GPIO / SERCOM3 / TC[4] |
| Pin 25 | PA23 — GPIO / SERCOM3 / TC[5] |
| Pin 26 | PA24 — GPIO / SERCOM1 / USB_DM |
| Pin 27 | PA25 — GPIO / SERCOM1 / USB_DP |
| Pin 28 | RESET — Reset input (active low) |
| Pin 29 | SWDIO — Serial Wire Debug I/O |
| Pin 30 | SWCLK — Serial Wire Debug clock |
| Pin 31 | VDD — Core supply voltage |
| Pin 32 | GND — Ground (thermal pad) |
Typical Applications
ATSAML11E14A-MFT is suitable for 6 applications: Secure IoT Sensor Nodes, Smart Metering and Utility Endpoints, Industrial Control Modules, Secure Payment Terminals and POS Devices, Wearable Health Monitoring Devices, Connected Lighting and Building Automation.
Secure IoT Sensor Nodes
The ATSAML11E14A-MFT fits secure IoT sensor nodes where TrustZone-M hardware isolation and on-chip AES/SHA/TRG crypto remove the need for an external secure element. Its sub-25 uA/MHz active current and sub-100 nA sleep current let coin-cell-powered nodes run for years while the integrated 12-bit ADC and SERCOM interfaces connect directly to environmental sensors. The SAM L11 secure boot with hardware root-of-trust prevents firmware tampering, and SleepWalking peripherals let the ADC scan autonomously while the CPU stays asleep.
Recommended
Smart Metering and Utility Endpoints
The ATSAML11E14A-MFT is well suited for smart metering applications requiring tamper-resistant firmware and long battery life. Its hardware TrustZone isolation lets metering firmware run in the secure domain while communication stacks run in the non-secure domain, meeting utility security certification requirements. The peripheral touch controller supports capacitive metering interfaces without an external touch IC, and the 32 MHz Cortex-M23 core executes metering algorithms in real time with deterministic interrupt latency.
Recommended
Industrial Control Modules
The ATSAML11E14A-MFT operates across the -40 C to +125 C industrial temperature range and includes analog peripherals (12-bit ADC, 10-bit DAC, operational amplifiers, analog comparators) that simplify PLC analog input conditioning. TrustZone isolation protects proprietary control algorithms from firmware cloning, while the Event System routes DMA-driven peripheral interactions without CPU wake-up, freeing CPU bandwidth for the control loop. Multiple SERCOM instances support SPI, I2C, and UART simultaneously, reducing external component count.
Recommended
Secure Payment Terminals and POS Devices
The ATSAML11E14A-MFT provides the hardware root-of-trust and on-chip crypto acceleration needed for PCI PTS-compliant payment terminals. TrustZone isolates the PIN-handling code in the secure domain while the user interface runs in the non-secure domain, meeting payment security requirements. AES and SHA accelerators offload cryptographic operations from the CPU, enabling fast transaction signing, while the sub-100 nA sleep current extends battery life in mobile POS devices. Tamper-detection inputs alert the secure domain to physical attacks.
Recommended
Wearable Health Monitoring Devices
The ATSAML11E14A-MFT suits wearable health monitors where low power, small package, and secure patient data handling are critical. The 32-VQFN (5x5 mm) package fits wrist-worn form factors, while sub-25 uA/MHz active and sub-100 nA sleep currents let devices run for weeks on a single charge. TrustZone isolation protects patient health information (PHI) from application-layer breaches, and the integrated 12-bit ADC connects directly to optical heart-rate and SpO2 sensors. The peripheral touch controller supports swipe and tap input.
Recommended
Connected Lighting and Building Automation
The ATSAML11E14A-MFT powers connected lighting controllers and building automation nodes where secure firmware updates and energy harvesting compatibility are required. TrustZone isolation protects lighting control firmware from network-side attacks, while the integrated PTC supports capacitive touch dimmers without an external IC. The Event System allows autonomous response to occupancy sensors without CPU wake-up, extending battery life in wireless light switches. Multiple SERCOM interfaces connect simultaneously to wireless modules (Bluetooth LE or sub-GHz).
Recommended
Recommended Products Summary
Engineering reference data for ATSAML11E14A-MFT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAML11E15A-MFT | ATSAML11D14A-MFT | ATSAML11E14A-MUT | ATSAML11D15A-MU | ATSAML10E15A-MFT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 32-VQFN (5x5) | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same |
| Core | Cortex-M23 32 MHz | Cortex-M23 32 MHz | Cortex-M23 32 MHz | Cortex-M23 32 MHz | Cortex-M23 32 MHz | Cortex-M23 32 MHz |
| Flash | 16 KB | 32 KB | 16 KB | 16 KB | 32 KB | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| TrustZone-M | Yes | Yes | No | Yes | No | No (SAM L10 family) |
| Crypto Accelerator | AES/SHA/TRG | AES/SHA/TRG | AES/SHA/TRG | AES/SHA/TRG | AES/SHA/TRG | No (SAM L10) |
| Peripheral Touch (PTC) | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C |
| Active Current | < 25 uA/MHz | < 25 uA/MHz | < 25 uA/MHz | < 25 uA/MHz | < 25 uA/MHz | < 25 uA/MHz |
| Packaging | Tape & Reel | Tape & Reel | Tape & Reel | Tray | Tray | Tape & Reel |
Key Differentiators
- On-chip TrustZone-M hardware isolation (vs ATSAML11D14A-MFT)
- On-chip AES/SHA/TRG crypto accelerator (vs ATSAML10E15A-MFT)
- Industry's lowest-power Cortex-M23 with TrustZone (vs Generic Cortex-M23 MCUs)
Design Notes
The ATSAML11E14A-MFT in the 32-VQFN (5x5 mm) package dissipates very low power (sub-25 uA/MHz active), but the exposed thermal pad must be soldered to a ground copper pour with at least 8 thermal vias to maintain electrical ground continuity and provide a low-impedance thermal path. Without the thermal pad soldered properly, the junction-to-ambient thermal resistance increases dramatically and may cause thermal shutdown in enclosed industrial enclosures at +125 C ambient.
Place the 100 nF VDD decoupling capacitor and 4.7 uF bulk capacitor within 2 mm of the VDD/VDDIO pins. Keep the SWD/SWCK trace lengths under 50 mm and surround them with a ground guard ring to avoid noise coupling during debug sessions. The 32 kHz crystal traces (XIN/XOUT) must be routed as a short differential pair with the load capacitors placed within 3 mm of the oscillator pins to maintain low jitter in low-power modes.
Configure the SAM L11 Secure Access Manager (SAM) and TrustZone linker to partition secure and non-secure regions before commissioning the device. According to the Microchip SAM L11 datasheet, the BOCOR (Boot Configuration Row) fuses define the secure boot policy and cannot be changed once programmed without a chip erase. Enable secure key storage for AES keys and configure tamper pins to trigger a secure-domain interrupt on physical attacks.
Do not assume the ATSAML11E14A-MFT and ATSAML11D14A-MFT are interchangeable: the 'E' variant includes TrustZone-M hardware isolation, while the 'D' variant does not. The 'D' part is the correct drop-in only when TrustZone is not required. Similarly, the -MFT suffix denotes Tape & Reel packaging while -MU denotes Tray; the die is identical but production lines may differ in factory programming flow.
Estimated: at 32 MHz active and 16 KB Flash executing from Flash, total current is approximately 0.8 mA; in deep sleep with RTC running, the device draws < 100 nA. To minimize sleep current, disable unused SERCOM instances and analog peripherals via the PMUX registers before entering standby, and avoid floating GPIO inputs by configuring them as output-low or enabling the internal pull-down to prevent shoot-through current.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; SAM V71/V70 family parts are Microchip's automotive-grade equivalents. Lead-free and halogen-free packaging confirmed.
