ATSAML11E16A-AU - 32MHz Cortex-M23 64KB MCU | Microchip
N.º de pieza: ATSAML11E16A-AU ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $4.85 | $4,85 |
| 10 | $4.36 | $43,60 |
| 100 | $3.88 | $388,00 |
| 500 | $3.49 | $1.745,00 |
| 1.000 | $3.1 | $3.100,00 |
| 2.500 | $2.78 | $6.950,00 |
ATSAML11E16A-AU Descripción general
An ARM Cortex-M23 microcontroller is a 32-bit processor core built on the ARMv8-M baseline architecture, optimized for energy-efficient embedded applications. It sits below the Cortex-M3 in performance but adds optional TrustZone-M for hardware-isolated secure firmware regions. The SAM L11 family from Microchip is the first commercial Cortex-M23 implementation to integrate TrustZone-M, secure boot, and a hardware AES/SHA crypto accelerator on die. Within the broader taxonomy, the part belongs to microcontrollers -> 32-bit MCUs -> ARM Cortex-M -> Cortex-M23 -> low-power secure MCUs -> power management hierarchy.
Key differentiating specifications include the TrustZone-M isolation engine, on-die crypto accelerators (AES, SHA, TRNG), 64 KB Flash with secure storage partitioning, 16 KB SRAM, six SERCOM interfaces configurable as UART/SPI/I2C, a 12-bit ADC, 10-bit DAC, analog comparator, and PTC (Peripheral Touch Controller) for capacitive touch sensing. The part also includes a Self-Programmable Flash with read-while-write support and a 32 kHz RTC with calendar mode.
Technically, the SAM L11 uses a single-cycle hardware multiplier and hardware divider for deterministic interrupt latency. The Cortex-M23 core delivers up to 31 DMIPS at 32 MHz. Sleep current below 100 nA is achieved via three power domains (PD0/PD1/PD2) and a backup domain with RTC. The 1.62V to 3.63V operating range supports direct Li-ion and 3.3V regulated rails.
Typical applications include IoT sensor nodes, secure wearables, smart metering, medical sensor patches, building automation endpoints, and battery-powered HMI with capacitive touch. The 85C ceiling suits indoor industrial enclosures, consumer appliances, and commercial IoT gateways.
When designing with the ATSAML11E16A-AU, ensure the secure key storage region is provisioned during initial flash programming and that the NRST line has the required 10 kohm pull-up. TrustZone-M secure/non-secure partitioning must be configured before user code execution; tools like MPLAB Harmony v3 and Atmel Studio 7 simplify this.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet summary, including same-package pin-to-pin MCU replacements drawn from the Microchip SAM L11 family.
Alternativas directas para ATSAML11E16A-AU — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ATSAML11E16A-AU (mismo factor de forma y huella) — difiere en ADC, Core, Package, Active Current, Operating Temperature.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ATSAML11E16A-AUT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATSAML11E15A-AUKPH
✅ Sustitución directa✓ En stock
$1.78 / unidad
Ver hoja de datos →ATSAML10E16A-AU
✅ Sustitución directa✓ En stock
$2.07 / unidad
Ver hoja de datos →ATSAML11E14A-AU
✅ Sustitución directa✓ En stock
$1.05 / unidad
Ver hoja de datos →ATSAML11D16A-MFT
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$2.51 / unidad
Ver hoja de datos →ATSAML11E15A-AUT
✅ Sustitución directa✓ En stock
$2.07 / unidad
Ver hoja de datos →ATSAML11E16A-AU Valores máximos y características eléctricas
| Core | ARM Cortex-M23 with TrustZone-M |
| Frecuencia de reloj máxima | 32 MHz |
| CoreMark per MHz | 2.62 |
| DMIPS | Up to 31 DMIPS |
| Program Memory (Flash) | 64 KB |
| SRAM | 16 KB |
| Operating Voltage Range | 1.62 V to 3.63 V |
| Active Current | < 25 uA/MHz |
| Sleep Current | < 100 nA |
| Temperatura de funcionamiento | -40C to +85C |
| Encapsulado | 32-pin TQFP (7x7 mm) |
| Tipo de montaje | Surface Mount |
| ADC | 12-bit |
| DAC | 10-bit |
| Crypto Accelerators | AES, SHA, TRNG on-die |
| Communication Interfaces | SERCOM (configurable UART/SPI/I2C) |
| Capacitive Touch | PTC (Peripheral Touch Controller) |
| Hardware Multiplier | Single-cycle |
| Nivel MSL | 3 (168 hours) |
| Estado RoHS | Compliant |
Configuración de pines de ATSAML11E16A-AU
| Pin 1 | PA00 — General purpose I/O, SERCOM alternative |
| Pin 2 | PA01 — General purpose I/O, SERCOM alternative |
| Pin 3 | PA02 — AIN[0] / DAC output / general purpose I/O |
| Pin 4 | PA03 — AIN[1] / general purpose I/O |
| Pin 5 | GND — Ground reference |
| Pin 6 | VDD — Digital supply voltage (1.62V-3.63V) |
| Pin 7 | PA04 — AIN[2] / general purpose I/O |
| Pin 8 | PA05 — AIN[3] / general purpose I/O |
| Pin 9 | PA06 — AIN[4] / general purpose I/O |
| Pin 10 | PA07 — AIN[5] / general purpose I/O |
| Pin 11 | PA08 — AIN[6] / SERCOM alternative / PTC |
| Pin 12 | PA09 — AIN[7] / SERCOM alternative / PTC |
| Pin 13 | PA10 — AIN[8] / SERCOM alternative / PTC |
| Pin 14 | PA11 — AIN[9] / SERCOM alternative / PTC |
| Pin 15 | PA14 — XOUT / general purpose I/O |
| Pin 16 | PA15 — XIN / general purpose I/O |
| Pin 17 | PA16 — SERCOM / PTC / general purpose I/O |
| Pin 18 | PA17 — SERCOM / PTC / general purpose I/O |
| Pin 19 | PA18 — SERCOM / PTC / general purpose I/O |
| Pin 20 | PA19 — SERCOM / PTC / general purpose I/O |
| Pin 21 | PA20 — SERCOM / PTC / general purpose I/O |
| Pin 22 | PA21 — SERCOM / PTC / general purpose I/O |
| Pin 23 | PA22 — SERCOM / PTC / general purpose I/O |
| Pin 24 | PA23 — SERCOM / PTC / general purpose I/O |
| Pin 25 | PA24 — SERCOM / PTC / general purpose I/O |
| Pin 26 | PA25 — SERCOM / PTC / general purpose I/O |
| Pin 27 | PA27 — SERCOM / PTC / general purpose I/O |
| Pin 28 | NRST — Reset input (active low) |
| Pin 29 | VDDIO — I/O supply voltage |
| Pin 30 | GND — Ground reference |
| Pin 31 | SWCLK — Serial Wire Debug clock |
| Pin 32 | SWDIO — Serial Wire Debug data |
Aplicaciones típicas
ATSAML11E16A-AU es adecuado para 6 aplicacións: IoT Secure Sensor Node, Battery-Powered Wearable Health Patch, Smart Meter Endpoint, Capacitive Touch HMI, Building Automation Sensor, Industrial Wireless Sensor Transmitter.
IoT Secure Sensor Node
The ATSAML11E16A-AU fits IoT secure sensor nodes because its sub-100 nA sleep current and TrustZone-M hardware isolation allow multi-year coin-cell operation while protecting firmware and identity. The 12-bit ADC reads thermistor, pressure, or environmental sensors directly; six SERCOM ports drive SPI sensors, I2C peripherals, and UART modems concurrently. On-die AES-128 and SHA-256 accelerators offload TLS handshake compute from the Cortex-M23 core. Compared to discrete secure-element + MCU solutions, the integrated design shrinks BOM by 50% and PCB area by 30%.
Recomendado
Battery-Powered Wearable Health Patch
For disposable health patches, the ATSAML11E16A-AU delivers the lowest active power in its class at under 25 uA/MHz and under 100 nA sleep, extending single-cell coin-cell life past 30 days. TrustZone-M secures patient-identifiable health data at rest; on-die crypto prevents firmware extraction. The 10-bit DAC drives bio-impedance analog front-ends, the 12-bit ADC captures ECG/EMG, and PTC handles wet-skin capacitive touch. The 32-pin TQFP at 7x7 mm fits a 25 mm diameter circular PCB layout.
Recomendado
Smart Meter Endpoint
The ATSAML11E16A-AU targets smart-meter endpoints where secure firmware updates and tamper resistance are mandatory. TrustZone-M isolates meter-calibration constants from application code, satisfying revenue-grade integrity requirements. The 32 MHz Cortex-M23 with single-cycle multiplier handles DLMS/COSEM protocol stack in real time. Six SERCOMs support M-Bus, wireless M-Bus radio modules, optical UART, and metrology ADC interfaces concurrently. The 1.62V-3.63V supply accepts direct 3.6V Li-SOCl2 primary cells without LDO losses.
Recomendado
Capacitive Touch HMI
The ATSAML11E16A-AU's on-chip PTC (Peripheral Touch Controller) supports up to 32 capacitive touch channels without external touch ICs. The Cortex-M23 core runs gesture recognition and debounce algorithms while TrustZone-M protects signed UI firmware. The 10-bit DAC can drive LED backlight brightness via PWM or analog control. The TQFP-32 package exposes enough GPIO for 12-16 touch buttons plus an I2C-driven display. Compared to discrete touch controllers, the integrated solution eliminates the touch-IC BOM line.
Recomendado
Building Automation Sensor
In commercial building automation, the ATSAML11E16A-AU operates from -40C to +85C, fitting rooftop and mechanical-room deployments. TrustZone-M isolates BACnet/Modbus credentials from sensor firmware, preventing credential theft via debug access. Six SERCOMs handle RS-485, KNX, Zigbee/Matter modules, and HVAC actuator drivers. Sub-100 nA sleep current allows battery-assisted HVAC damper control with 10-year service intervals. The 64 KB Flash accommodates Matter commissioning code plus application logic.
Recomendado
Industrial Wireless Sensor Transmitter
For 4-20 mA loop replacement wireless transmitters, the ATSAML11E16A-AU offers the integration needed for an entire sensor node in one IC: ADC for sensor digitization, DAC for loop emulation or actuator drive, SERCOM for radio module interfacing, and crypto for authenticated sensor data. The 32 MHz Cortex-M23 runs calibration math in real time. AES hardware encryption secures sensor readings against eavesdropping on the wireless link. The 1.62V minimum supply supports Energy Harvesting PMIC outputs down to 1.8V.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATSAML11E16A-AU — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ATSAML11E16A-AUT | ATSAML11E15A-AU | ATSAML10E16A-AU | ATSAML11E14A-AU |
|---|---|---|---|---|---|
| Package | 32-pin TQFP (7x7 mm) | 32-pin TQFP (7x7 mm) - same | 32-pin TQFP (7x7 mm) - same | 32-pin TQFP (7x7 mm) - same | 32-pin TQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | Cortex-M23 + TrustZone-M | Cortex-M23 + TrustZone-M | Cortex-M23 + TrustZone-M | Cortex-M23 (no TrustZone-M) | Cortex-M23 + TrustZone-M |
| Flash Memory | 64 KB | 64 KB | 32 KB | 64 KB | 16 KB |
| SRAM | 16 KB | 16 KB | 8 KB | 16 KB | 4 KB |
| On-die Crypto | AES/SHA/TRNG | AES/SHA/TRNG | AES/SHA/TRNG | None | AES/SHA/TRNG |
| Maximum Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Sleep Current | < 100 nA | < 100 nA | < 100 nA | < 100 nA | < 100 nA |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Diferenciadores clave
- Industry's first Cortex-M23 with on-die TrustZone-M (frente a ATSAML10E16A-AU)
- Half the sleep current of competing Cortex-M0+ MCUs (frente a SAMD20 Cortex-M0+ family)
- Same-package drop-in migration to higher or lower memory tiers (frente a ATSAML11E15A-AU / ATSAML11E14A-AU)
Notas de diseño
The ATSAML11E16A-AU has three independently gated power domains (PD0, PD1, PD2) plus a backup domain with RTC retention. To achieve the <100 nA sleep current, switch all peripherals into PD2 and disable the Cortex-M23 core via Wait-for-Event (WFE) or Sleep-Now mode. The backup domain with RTC running draws approximately 700 nA, so even RTC-only retention should not be assumed to hit 100 nA unless the backup domain is also gated.
TrustZone-M secure/non-secure partitioning must be configured during the initial flash programming pass before user code executes. Designers using MPLAB Harmony v3 must enable the TrustZone-M linker in project properties, or the boot ROM will fail to enter secure mode. If a non-secure image is loaded without secure firmware present, the device will hard-fault on every boot. Reference the SAM L11 TrustZone-M Getting Started Guide (DS00003222A) before first programming.
Place a 1 uF X7R 0402 ceramic decoupling capacitor within 3 mm of the VDD pin, and a 100 nF X7R 0402 within 2 mm of the VDDIO pin. Add a 4.7 uF bulk capacitor near the MCU to support SERCOM TX burst currents. The 32 kHz crystal load capacitors should be sized per crystal CL specification and placed symmetrically to XIN/XOUT pins to minimize duty-cycle distortion. Keep the SWD trace length under 50 mm with 50 ohm impedance for reliable debug programming.
SERCOM lines configured for I2C require 4.7 kohm to 10 kohm pull-ups even when used as GPIO inputs, because the SAM L11 lacks internal pull-ups on every pin function. SERCOM pads configured for SPI master at >10 MHz need a 33 ohm series resistor at the driver pin to dampen reflections on long board traces. ADC inputs should be guarded with a ground ring on the PCB top layer to reduce digital switching noise pickup from adjacent SERCOM traces.
Información de cumplimiento
RoHS compliant per Microchip product page. Standard grade (-40C to +85C) - not AEC-Q100 automotive qualified; for automotive applications use ATSAML11E16A-AUT extended temperature or consult Microchip automotive part list.
