ATSAML11D14A-MU - 32MHz Cortex-M23 MCU w/ TrustZone | 24-VQFN
Teilenummer: ATSAML11D14A-MU ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $2.49 | $2,49 |
| 10 | $2.32 | $23,20 |
| 100 | $2.18 | $218,00 |
| 500 | $2.05 | $1.025,00 |
| 1.000 | $1.91 | $1.910,00 |
ATSAML11D14A-MU Übersicht
A microcontroller (MCU) is a System-on-Chip that integrates a CPU core, program memory (Flash), working memory (SRAM), and programmable peripherals into a single device. The Cortex-M23 is an ARMv8-M baseline core that introduces TrustZone for Cortex-M, enabling hardware-isolated secure and non-secure code execution. The ATSAML11 family belongs to the SAM family of 32-bit microcontrollers from Microchip, positioned under the broader ARM Cortex-M hierarchy and serving low-power, security-focused IoT endpoints.
Key features of the ATSAML11D14A-MU include ARM TrustZone-M hardware isolation, secure key storage, chip-level tamper resistance (Active Tamper), 16KB Flash / 8KB SRAM, a 32 MHz maximum CPU clock, an integrated hardware AES/SHA accelerator, 17 programmable I/O pins, and selectable peripherals including SERCOM (I2C/SPI/UART), ADC, DAC, timers, and RTC. The part is rated for the industrial temperature range (-40C to +85C) and is supplied in a 24-VQFN 4x4 mm package.
The ATSAML11D14A-MU targets deployments where deterministic real-time response, low power, and on-chip security are all required simultaneously. TrustZone-M allows developers to partition firmware into secure and normal worlds for IP protection, secure boot, and key management. Combined with hardware crypto and tamper detection, the device is engineered for connected endpoints that must defend against physical and remote attacks without burdening the application CPU.
Typical applications include secure IoT endpoints, sensor nodes with secure firmware, smart meters, asset tracking, access control peripherals, and battery-powered industrial sensors. The combination of TrustZone-M plus less than 100 nA sleep current makes it well-suited to devices that spend long intervals dormant and wake only to perform short authenticated tasks.
When designing in the ATSAML11D14A-MU, plan the secure/non-secure memory map early; TrustZone-M boundaries defined in the linker script are easier to design up front than to retrofit. Decoupling: place one 100 nF X7R plus one 1 uF X7R close to VDDIN/VDDIO, and provide a clean ground return under the exposed pad which must be soldered to the PCB for thermal and electrical reasons.
This page synthesizes distributor pricing, secure-MCU design notes, parametric comparisons versus other SAM L11 pin-compatibles, and TradePulse-style drop-in alternatives - information engineers need that a raw datasheet PDF does not provide on a single page.
Drop-in-Alternativen für ATSAML11D14A-MU – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ATSAML11D14A-MU (gleiche Bauform und Footprint) – abweichend in Package, ADC, Core, SRAM, Core Architecture.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ATSAML11D14A-MUT
✅ Drop-In✓ Auf Lager
$1.62 / Stück
Datenblatt ansehen →ATSAML11D14A-YFT
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$1.97 / Stück
Datenblatt ansehen →ATSAML10E16A-MU
✅ Drop-In✓ Auf Lager
$1.89 / Stück
Datenblatt ansehen →ATSAML10E15A-AU
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$1.92 / Stück
Datenblatt ansehen →ATSAML10D14A-MF
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$2.18 / Stück
Datenblatt ansehen →ATSAML11D14A-MU Grenzwerte & elektrische Eigenschaften
| Core | ARM Cortex-M23 (ARMv8-M, TrustZone-M) |
| CPU Architecture | 32-bit RISC |
| Maximum CPU Clock | 32 MHz |
| Program Memory (Flash) | 16 KB (16K x 8) |
| SRAM | 8 KB |
| Operating Voltage (VDDIN) | 1.62 V to 3.63 V |
| I/O Voltage (VDDIO) | 1.62 V to 3.63 V |
| Gehäuse | 24-VQFN (4x4 mm) with exposed thermal pad |
| Number of I/O Pins | 17 |
| Active Current | < 25 uA/MHz |
| Sleep Current | < 100 nA |
| Betriebstemperatur | -40C to +85C |
| Connectivity | I2C, SPI, UART/USART (via SERCOM) |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT, AES/SHA, TrustZone-M, RTC, ADC, DAC, Timers |
| Hardware Crypto | AES-128, SHA-256, secure key storage, chip-level tamper |
| Montageart | Surface Mount |
| RoHS-Status | Compliant |
ATSAML11D14A-MU Pin-Konfiguration
| Pin 1 | PA01 — General I/O; multiplexed GPIO |
| Pin 2 | PA02 — General I/O; multiplexed GPIO |
| Pin 3 | PA03 — General I/O; multiplexed GPIO |
| Pin 4 | GND — Ground |
| Pin 5 | VDDIN — Main supply input (1.62V to 3.63V) |
| Pin 6 | VDDIO — I/O supply (1.62V to 3.63V) |
| Pin 7 | PA04 — General I/O; multiplexed GPIO |
| Pin 8 | PA05 — General I/O; multiplexed GPIO |
| Pin 9 | PA06 — General I/O; multiplexed GPIO |
| Pin 10 | PA07 — General I/O; multiplexed GPIO |
| Pin 11 | PA08 — General I/O; multiplexed GPIO |
| Pin 12 | PA09 — General I/O; multiplexed GPIO |
| Pin 13 | PA10 — General I/O; multiplexed GPIO |
| Pin 14 | PA11 — General I/O; multiplexed GPIO |
| Pin 15 | PA14 — General I/O; multiplexed GPIO |
| Pin 16 | PA15 — General I/O; multiplexed GPIO |
| Pin 17 | PA16 — General I/O; multiplexed GPIO |
| Pin 18 | PA17 — General I/O; multiplexed GPIO |
| Pin 19 | PA27 — General I/O; multiplexed GPIO |
| Pin 20 | RESET — System reset, active low |
| Pin 21 | SWDIO — Serial Wire Debug I/O |
| Pin 22 | SWCLK — Serial Wire Debug clock |
| Pin 23 | GND — Ground (also exposed pad) |
| Pin 24 | EP — Exposed pad - must be soldered to GND |
Typische Anwendungen
ATSAML11D14A-MU ist geeignet für 6 Anwendungs: Secure IoT Sensor Nodes, Smart Meters and Utility Endpoint Nodes, Industrial Wireless Sensor Nodes, Access Control and Electronic Locks, Asset Tracking and GPS Beacons, Medical Wearable Devices.
Secure IoT Sensor Nodes
The ATSAML11D14A-MU is well suited to battery-powered IoT sensor nodes that demand authenticated telemetry and resistance to physical tampering. Per Microchip, the device draws under 25 uA/MHz active and under 100 nA in sleep, so a node waking briefly every few seconds runs for years on a coin cell or 2xAA cells; the 16KB Flash / 8KB SRAM holds lightweight IoT firmware plus the TrustZone-M secure world for crypto. Hardware AES-128/SHA-256 acceleration offloads TLS handshakes from the main CPU, leaving headroom for sensor data processing, and chip-level tamper detect covers threats like voltage glitching.
Empfohlen
Smart Meters and Utility Endpoint Nodes
The ATSAML11D14A-MU fits utility endpoints such as electricity, water, or gas metering where authenticated reading, tamper resistance, and low power converge. The Cortex-M23 core at 32 MHz handles metering computations and radio control, while TrustZone-M isolates the cryptographic key and signed-firmware verification. Per Microchip, the <100 nA sleep current supports extended battery life in gas and water meters that wake on sensor pulses, and the ADC captures analog sensor inputs without an external converter.
Empfohlen
Industrial Wireless Sensor Nodes
The ATSAML11D14A-MU's industrial temperature grade (-40C to +85C) and low operating current make it a strong fit for factory-floor wireless sensor nodes. Per Microchip's SAM L11 product brief, the device tolerates industrial supply noise on VDDIN/VDDIO and offers SERCOM instances for SPI/Sub-GHz radios plus I2C sensors. TrustZone-M protects proprietary calibration constants against IP theft, while the DAC drives 4-20 mA loop outputs, allowing direct integration into existing industrial networks with no security gap.
Empfohlen
Access Control and Electronic Locks
The ATSAML11D14A-MU suits electronic locks, door controllers, and access point hardware where local PIN, card, or biometric authentication needs hardware-protected key storage. Per Microchip, the integrated TrustZone-M and secure key storage keep credentials inside the secure world even with a compromised application layer; AES-128 acceleration enables fast challenge-response with readers; and the small 24-VQFN 4x4 package fits into slim lock hardware. The DAC drives a buzzer for tamper alerts while GPIO monitors intrusion switches.
Empfohlen
Asset Tracking and GPS Beacons
The ATSAML11D14A-MU targets battery-powered asset trackers and beacons where secure pairing, low sleep current, and small PCB area are priorities. Per the manufacturer datasheet, the device wakes, verifies firmware integrity, fetches an authenticated GNSS fix from a companion module, signs it with hardware AES-128, transmits, and returns to sub-100nA sleep - all on a coin cell for months. The 17 GPIO leaves enough headroom for an accelerometer interrupt line, charging IC control, and an LoRa/Sigfox modem interface.
Empfohlen
Medical Wearable Devices
The ATSAML11D14A-MU fits medical wearables - patches, wearables, and continuous-glucose-monitor-style devices - that prioritize low power and HIPAA-grade data hygiene. Per Microchip, the secure world holds the patient's identifier and crypto keys, while the application world handles sensor data over I2C/SPI. Hardware AES/SHA offload keeps authenticated Bluetooth LE transfers under real-time budgets, and the ADC monitors battery voltage and a photoplethysmography sensor channel without an external converter.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ATSAML11D14A-MU – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ATSAML11D14A-MUT | ATSAML10E16A-MU | ATSAML10D14A-MF | ATSAML10E15A-AU |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 24-VQFN (4x4) | 24-VQFN (4x4) - same | 24-VQFN (4x4) - same | 24-VQFN (4x4) - same | 24-VQFN (4x4) - same |
| Core | Cortex-M23 (TrustZone-M) | Cortex-M23 (TrustZone-M) | Cortex-M23 (no TrustZone) | Cortex-M23 (no TrustZone) | Cortex-M23 (no TrustZone) |
| Maximum CPU Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Program Memory (Flash) | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB |
| SRAM | 8 KB | 8 KB | 4 KB | 2 KB | 4 KB |
| Hardware Crypto (AES/SHA) | Yes (AES-128, SHA-256) | Yes | No | No | No |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Wichtigste Unterscheidungsmerkmale
- TrustZone-M hardware isolation (vs. ATSAML10E16A-MU)
- Hardware AES/SHA acceleration (vs. ATSAML10D14A-MF)
- 2x SRAM headroom vs SAM L10D (vs. ATSAML10D14A-MF)
Designhinweise
Place a 100 nF X7R plus a 1 uF X7R ceramic close to VDDIN and a 100 nF X7R near VDDIO with a common ground. Per Microchip, the SAM L11 sleep current drops to under 100 nA only when the DC-DC converter is properly bypassed and no floating I/O are present - either configure unused pins with INPUT_PULLUP and a defined state, or set them to OUTPUT_LOW. Watch for IDE/board-env leakage on evaluation setups that hold MCU reset low; that quiescent number is supplied externally and adds to the figure.
Estimated: with all 17 GPIO switching at 8 MHz, the SAM L11 in 24-VQFN 4x4 mm dissipates ~25-50 mW typical. The 24-VQFN exposed pad must be soldered to a continuous copper pour at least 25 mm^2 (top or bottom layer) to keep junction temperature rise under 5-10 C above ambient in still air; per IPC-2222 a 4-thermal-via array directly under the EP at 0.4 mm pitch is recommended. For sealing wash or conformal-coated designs, route all thermal vias through the inner EP plane rather than losing contact with the EP itself.
Route SWDIO and SWCLK as paired, length-matched traces (within 100 mil) with a ground guard or at minimum ground return underneath. Keep the SWD connector as far from the boost regulator and RF traces as possible; long SWD stubs couple noise into the debug bus. Per Microchip, the SAM L11 high-speed ADC works best with a separate analog supply on a star-ground and isolated ground return; do not share the digital GND return with the antenna or switching node. The exposed pad (EP) is the only ground reference that the device sees - expose it on each layer of the stack.
Common pitfalls: (1) Failing to enable TrustZone-M in the linker script means the device boots in non-secure mode and crypto is exposed - audit this with `atmel_start` and an IDA-style secure-world check. (2) Connecting VDDIO > VDDIN traps the device in brownout; verify sequencing at power-up. (3) Forgetting the chip-level tamper pins route the tamper-away event to all I/O, which can drain 100-200 uA in idle - the data matrix pins must be left NC, not floating. Always run the SAM L11 security audit on first prototypes.
Place the 32.768 kHz crystal within 5 mm of the XIN/XOUT pins, each pin with a 4-7 pF load cap to GND, and shield the traces from the switching regulator by at least 2-3 mm. Per the SAM L11 datasheet, the RTC accuracy depends on a symmetric PCB layout - mirror the XOUT trace against XIN to cancel thermal mass. Use a microstrip or guarded path for the SERCOM clock to an external sensor and verify eye margin on a 100 MHz oscilloscope before committing to PCB manufacturing.
Compliance-Informationen
Compliant with RoHS and REACH per Microchip product page. AEC-Q100 grade parts in the same family carry the -YFT suffix with extended temperature; the ATSAML11D14A-MU itself is industrial-grade (-40C to +85C).
