ATSAML11E16A-MU - ARM Cortex-M23 32MHz 64KB Flash MCU | Microchip
Référence : ATSAML11E16A-MU ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.42 | $3,42 |
| 10 | $3.08 | $30,80 |
| 100 | $2.75 | $275,00 |
| 500 | $2.46 | $1 230,00 |
| 1 000 | $2.2 | $2 200,00 |
ATSAML11E16A-MU Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, volatile and non-volatile memory, peripherals, and I/O. The Cortex-M23 is ARM's smallest and most energy-efficient application processor, designed as a successor to the Cortex-M0/M0+ with branch prediction, single-cycle I/O, and an optional TrustZone-M extension. Within the SAM L11 hierarchy, ATSAML11E16A-MU sits in the high-memory tier (E = 64 KB Flash / 16 KB SRAM) versus the D14/D15/D16 variants. The L11 sits inside Microchip's MCU portfolio between the ultra-low-power SAML10 and the Cortex-M4 SAM L21 families.
Key features include integrated crypto accelerators (AES, SHA, TRNG), secure key storage, tamper detection, a 12-bit 1 Msps ADC, a 10-bit DAC, two analog comparators, an op-amp, a peripheral touch controller (PTC), and six SERCOM channels that can be configured as UART, SPI, I2C, or LIN. The device operates from 1.62 V to 3.63 V across -40 C to +85 C (industrial grade) and supports both 1.6 V and 3.3 V typical rails.
Architecture-wise, the ATSAML11E16A-MU pairs the Cortex-M23 core with Microchip's Event System, SleepWalking peripherals, and an 8-channel DMA. TrustZone-M enables secure boot and isolated execution, with secure peripherals such as the RTC and integrity check monitor (ICM) dedicated to the secure world. Hardware crypto blocks offload AES-128/256 and SHA-1/2 from software, reducing active current during TLS handshakes by an order of magnitude versus pure software implementations.
Typical applications include IoT edge nodes with secure cloud onboarding, wireless sensor nodes (paired with ATECC608B secure element or SAM W25 SoC), battery-powered smart locks and access control, secure medical sensors, asset-tracking BLE beacons, and industrial PLC safety I/O. The integrated PTC enables capacitive touch interfaces for HMI front panels without an external touch IC.
Designers should evaluate power budgets carefully: at 3.3 V, 32 MHz, and full peripheral activity, the budget of <25 uA/MHz implies roughly 800 uA active current; sleep mode below 100 nA enables multi-year coin-cell operation when SleepWalking peripherals are used. Always provide a 100 nF decoupling capacitor on each VDD pin and a 4.7 uF bulk capacitor on the main rail.
This page synthesizes distributor pricing, drop-in package-compatible alternatives, and practical TrustZone design notes not found in the manufacturer datasheet alone, providing a single source of truth for engineers evaluating the SAM L11 family.
Alternatives de remplacement direct pour ATSAML11E16A-MU — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATSAML11E16A-MU (même facteur de forme et même empreinte) — différant par Package, Operating Temperature, ADC, Core, Flash Memory.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATSAML11E16A-MUT
✅ Remplacement direct✓ En stock
$2.07 / unité
Voir la fiche technique →ATSAML11E15A-MU
✅ Remplacement direct✓ En stock
$1.55 / unité
Voir la fiche technique →ATSAML11E16A-MF
✅ Remplacement direct✓ En stock
$2.05 / unité
Voir la fiche technique →ATSAML11E16A-MFTKPH
✅ Remplacement direct✓ En stock
$3.32 / unité
Voir la fiche technique →ATSAML10E16A-MU
✅ Remplacement direct✓ En stock
$1.89 / unité
Voir la fiche technique →ATSAML11E16A-MU Valeurs maximales et caractéristiques électriques
| Core Architecture | ARM Cortex-M23 |
| Fréquence d'horloge maximale | 32 MHz |
| Program Memory (Flash) | 64 KB (64K x 8) |
| SRAM | 16 KB |
| Operating Voltage Range | 1.62 V to 3.63 V |
| Active Current | < 25 uA/MHz (per Microchip product page) |
| Sleep Current | < 100 nA (per Microchip product page) |
| Température de fonctionnement | -40 C to +85 C (industrial grade) |
| Boîtier | 32-pin VQFN (5x5 mm) |
| Type de montage | Surface Mount |
| TrustZone-M Support | Yes (ARM TrustZone for Cortex-M) |
| Hardware Crypto | AES-128/256, SHA-1/2, TRNG |
| ADC | 12-bit, 1 Msps |
| DAC | 10-bit |
| Analog Comparators | 2 |
| Operational Amplifier | 1 (integrated) |
| Peripheral Touch Controller (PTC) | Yes |
| SERCOM Channels | 6 (configurable as UART/SPI/I2C/LIN) |
| DMA Channels | 8 |
| Niveau MSL | 3 (per JEDEC J-STD-020) |
| Statut RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de ATSAML11E16A-MU
| Broche 1 | PA00 — General-purpose I/O / ADC0 input |
| Broche 2 | PA01 — General-purpose I/O / ADC1 input |
| Broche 3 | PA02 — General-purpose I/O / ADC2 input |
| Broche 4 | PA03 — General-purpose I/O / ADC3 input / REF |
| Broche 5 | GND — Ground |
| Broche 6 | VDD — Digital supply voltage |
| Broche 7 | PA04 — General-purpose I/O / ADC4 input |
| Broche 8 | PA05 — General-purpose I/O / ADC5 input |
| Broche 9 | PA06 — General-purpose I/O / ADC6 input |
| Broche 10 | PA07 — General-purpose I/O / ADC7 input |
| Broche 11 | PA08 — General-purpose I/O / SERCOM0 |
| Broche 12 | PA09 — General-purpose I/O / SERCOM0 |
| Broche 13 | PA10 — General-purpose I/O / SERCOM0 |
| Broche 14 | PA11 — General-purpose I/O / SERCOM0 |
| Broche 15 | VDD — Digital supply voltage |
| Broche 16 | GND — Ground |
| Broche 17 | PA14 — General-purpose I/O / SERCOM2 |
| Broche 18 | PA15 — General-purpose I/O / SERCOM2 |
| Broche 19 | PA16 — General-purpose I/O / SERCOM1 / I2C |
| Broche 20 | PA17 — General-purpose I/O / SERCOM1 / I2C |
| Broche 21 | PA18 — General-purpose I/O / SERCOM3 |
| Broche 22 | PA19 — General-purpose I/O / SERCOM3 |
| Broche 23 | PA20 — General-purpose I/O / SERCOM5 |
| Broche 24 | PA21 — General-purpose I/O / SERCOM5 |
| Broche 25 | PA22 — General-purpose I/O / SERCOM5 |
| Broche 26 | PA23 — General-purpose I/O / SERCOM5 |
| Broche 27 | PA24 — General-purpose I/O / SERCOM4 |
| Broche 28 | PA25 — General-purpose I/O / SERCOM4 |
| Broche 29 | PA27 — General-purpose I/O / Bootloader |
| Broche 30 | RESET — Active-low reset input |
| Broche 31 | SWCLK — Serial Wire Debug clock |
| Broche 32 | SWDIO — Serial Wire Debug data |
Applications typiques
ATSAML11E16A-MU convient pour 7 applications: IoT Edge Node with Secure Cloud Onboarding, Battery-Powered Smart Lock and Access Control, Capacitive Touch HMI Front Panel, Secure Medical Sensor Wearable, Industrial Wireless Sensor Node (ISA/IEC 62443), Asset Tracking BLE Beacon, Smart Agriculture Sensor (LoRaWAN).
IoT Edge Node with Secure Cloud Onboarding
The ATSAML11E16A-MU is well-suited for IoT edge nodes requiring secure cloud onboarding because of its integrated ARM TrustZone-M hardware isolation and hardware AES-256/SHA-256 accelerators. With 64 KB Flash and 16 KB SRAM, it can host a TLS 1.3 client stack plus a secure bootloader without external memory. The <25 uA/MHz active current and <100 nA sleep current allow coin-cell powered sensor nodes to last 5+ years. Place the MCU between a 3.3 V LDO and a wireless module such as the ATECC608B secure element or SAM W25 SoC, with the TrustZone secure world owning key storage and the non-secure world running the application logic. Hardware crypto blocks offload TLS handshakes, reducing peak active current by an order of magnitude versus pure software AES.
Recommandé
Battery-Powered Smart Lock and Access Control
The ATSAML11E16A-MU fits battery-powered smart locks thanks to its <100 nA sleep current and integrated tamper detection. The 12-bit 1 Msps ADC reads keypad or sensor inputs while the integrated op-amp conditions analog signals without external components. TrustZone-M isolates credential storage in secure Flash, with secure boot preventing firmware rollback attacks. The device's 32 MHz Cortex-M23 core executes AES-256 in hardware, supporting sub-100 ms BLE authentication cycles. With a typical 2,400 mAh Li-ion battery, expect 18-24 months of operation between charges when the MCU sleeps 99% of the time and wakes only on keypad or BLE events. The 32-VQFN package fits inside standard lock cylinder housings.
Recommandé
Capacitive Touch HMI Front Panel
The ATSAML11E16A-MU's integrated Peripheral Touch Controller (PTC) supports up to 32 capacitive touch channels without an external touch IC, reducing BOM cost and PCB area. The 32-VQFN (5x5 mm) package fits behind a 0.8 mm glass overlay. Hardware AES and the Cortex-M23's branch prediction accelerate gesture recognition algorithms at 32 MHz. The <25 uA/MHz active current keeps touch-scanning power budgets below 500 uA even with continuous scanning at 10 ms intervals. SleepWalking peripherals allow the PTC to wake the CPU only on a valid touch event, dropping standby current to <100 nA. Use the SERCOM channels for I2C communication with a host display controller.
Recommandé
Secure Medical Sensor Wearable
The ATSAML11E16A-MU is ideal for secure medical wearables needing FDA-grade data integrity and long battery life. The 12-bit 1 Msps ADC captures high-fidelity biosignals (ECG, SpO2, temperature), while the integrated op-amp conditions electrode signals directly without external components. TrustZone-M enforces HIPAA-compliant patient data isolation in secure Flash, with the hardware TRNG generating encryption keys for each device pairing session. The Cortex-M23's deterministic interrupt latency (12 cycles typical) ensures precise timing for sensor sampling. At <100 nA sleep current, a 200 mAh coin cell powers continuous heart-rate monitoring for 6-9 months. The 32-VQFN package weighs less than 0.1 g and fits inside a 25 mm wristband.
Recommandé
Industrial Wireless Sensor Node (ISA/IEC 62443)
For industrial wireless sensor nodes requiring IEC 62443 cybersecurity compliance, the ATSAML11E16A-MU provides TrustZone-M secure boot, hardware AES-256, and chip-level tamper detection. The 32 MHz Cortex-M23 executes Modbus TCP, OPC-UA, or WirelessHART protocol stacks within the 64 KB Flash budget. The 32-VQFN package operates across -40 C to +85 C industrial temperature range. SERCOM channels configure as RS-485, SPI, or I2C to interface with pressure, flow, and level sensors. Hardware crypto offloads TLS/DTLS handshakes that would otherwise block the main CPU. Pair with a sub-GHz transceiver like the SAM R34 LoRa for long-range, low-power field connectivity.
Recommandé
Asset Tracking BLE Beacon
The ATSAML11E16A-MU pairs well with BLE SoCs in asset-tracking beacons where security and battery life are paramount. The MCU acts as a secure coprocessor: the Cortex-M23 runs secure boot, validates BLE advertisement packets via hardware SHA-256, and manages tamper detection. Sleep current <100 nA combined with a typical 1,000 mAh CR2477 coin cell yields 3-5 years of beacon operation. The integrated 12-bit ADC monitors a coin-cell voltage divider to trigger low-battery alerts. TrustZone-M prevents firmware extraction even if an attacker gains physical access. The 32-VQFN (5x5 mm) footprint keeps the beacon PCB under 15 mm x 15 mm.
Recommandé
Smart Agriculture Sensor (LoRaWAN)
The ATSAML11E16A-MU supports battery-powered smart agriculture sensors (soil moisture, leaf wetness, ambient temperature) deployed in remote fields. The <25 uA/MHz active current and <100 nA sleep current allow multi-year operation on two AA batteries, with the SleepWalking ADC triggering wake-up only when soil moisture crosses a threshold. TrustZone-M secures LoRaWAN join keys in the dedicated secure Flash region. Hardware AES-128 accelerates the LoRaWAN frame counter encryption without CPU intervention. The 32-VQFN package withstands -40 C to +85 C field conditions. Pair with the SAM R34 LoRa transceiver for 10+ km rural connectivity.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATSAML11E16A-MU — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATSAML11E16A-MUT | ATSAML11E15A-MU | ATSAML11E16A-MF | ATSAML11E16A-MFT | ATSAML10E16A-MU |
|---|---|---|---|---|---|---|
| Package | 32-VQFN (5x5 mm) | 32-VQFN (5x5 mm) - same | 32-VQFN (5x5 mm) - same | 32-VQFN (5x5 mm) - same | 32-VQFN (5x5 mm) - same | 32-VQFN (5x5 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M23 (no TrustZone) |
| Flash Memory | 64 KB | 64 KB | 32 KB (-50%) | 64 KB | 64 KB | 64 KB |
| SRAM | 16 KB | 16 KB | 8 KB (-50%) | 16 KB | 16 KB | 16 KB |
| TrustZone-M | Yes | Yes | Yes | Yes | Yes | No |
| Hardware Crypto | AES-128/256, SHA-1/2, TRNG | AES-128/256, SHA-1/2, TRNG | AES-128/256, SHA-1/2, TRNG | AES-128/256, SHA-1/2, TRNG | AES-128/256, SHA-1/2, TRNG | AES-128/256, SHA-1/2, TRNG |
| Max Clock Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | Different screening (MF) | Different screening (MF) | -40 C to +85 C |
Principaux différenciateurs
- Industry's lowest-power Cortex-M23 with TrustZone-M (vs ATSAML10E16A-MU)
- 64 KB Flash / 16 KB SRAM in 32-VQFN (vs ATSAML11E15A-MU)
- Hardware AES-256/SHA-256/TRNG accelerators (vs ATSAML11E16A-MF)
Notes de conception
Place a 100 nF ceramic decoupling capacitor on each VDD pin (pin 6 and pin 15) within 2 mm of the package, plus a single 4.7 uF bulk capacitor on the main 3.3 V rail. The SAM L11 is sensitive to supply ripple during SleepWalking events; insufficient decoupling can trigger spurious ADC wake-ups. For battery-powered designs, route the coin-cell ground return through a star-ground topology and avoid sharing ground with high-current loads.
Keep the 32.768 kHz crystal traces under 5 mm and surround them with a ground pour isolated from noisy digital signals. Place the SWD/SWCLK pins (31, 32) on a dedicated debug header with a 100 ohm series termination for reliable programming at 32 MHz. The exposed pad on the 32-VQFN package must be soldered to a ground pad of at least 10 thermal vias (0.3 mm drill) for adequate heat dissipation at full 32 MHz operation.
Estimated: enabling TrustZone-M after first programming requires a chip erase that also wipes the user Flash - plan secure/non-secure Flash partitioning BEFORE initial programming. Do not use the PA27 pin (pin 29) for general I/O if you need the bootloader entry function, as the BOOTPROT feature multiplexes this pin. When migrating from SAML10 to SAML11, note that the SERCOM pin assignments differ - re-validate I/O mapping with the Microchip PinView tool before layout.
Informations de conformité
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified - choose ATSAML11E16A-MUT for automotive-grade screening if available. Halogen-free status not explicitly stated in provided data.
