ATSAML11E16A-AFTKPH - Cortex-M23 32MHz 64KB MCU | Microchip
MPN： ATSAML11E16A-AFTKPH ✓ 啟用中ATSAML11E16A-AFTKPH 概覽
A microcontroller (MCU) is a programmable system-on-chip that integrates a CPU core, memory, and programmable peripherals around a single die. The ARM Cortex-M23 is an ARMv8-M Baseline architecture core designed for deterministic, energy-efficient embedded processing, while TrustZone for ARMv8-M adds hardware isolation between secure and non-secure code regions. Within Microchip's portfolio, this part sits in the SAM L11 family - a Cortex-M23-based line positioned between the smaller SAM L10 (Cortex-M23, no TrustZone) and the higher-end SAM L22 (Cortex-M23 with rich peripherals). It belongs to the broader power management and microcontroller hierarchy: MCU -> embedded controller -> system-on-chip (SoC) -> semiconductor.
Key features include less than 25 uA/MHz active current and less than 100 nA in sleep mode, an Enhanced Peripheral Touch Controller (PTC) for capacitive touch sensing, a hardware Crypto accelerator suite (AES, SHA, ECC, TRNG), and an integrated Secure Boot with immutable root-of-trust. The 12-bit ADC, 10-bit DAC, and 16-bit PWM/timer subsystems make it suitable for mixed-signal sensing. ESD ratings are 4 kV HBM and 1 kV CDM per industry-standard test methods.
The IC uses a single 1.62-3.63 V supply and offers multiple low-power modes (Idle, Standby, Hibernate, Backup, and Off). CoreMark / Dhrystone performance scales linearly with clock. Compared with legacy 8-bit PIC MCUs, the ATSAML11E16A delivers roughly 40-80x more compute per MHz while maintaining comparable sleep current.
Typical applications include smart-home and IoT sensor nodes, secure wireless controllers (BLE/Zigbee host MCUs), battery-powered wearables, and secure industrial/medical sensor endpoints. With TrustZone and crypto acceleration, the part is well suited to products that must meet evolving cyber-security regulations.
When designing with this MCU, provide a 1.62-3.63 V regulated rail; for sleep currents under 1 uA, switch the core to Hibernate via the SleepWalking peripheral gating. Decouple VDD with a 100 nF + 1 uF pair close to the package. For touch or ADC applications, allocate the second 1 uF to AVDD, and keep the analog traces away from switching nodes.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet - helping you evaluate the SAM L11 family for secure, low-power embedded designs.
直接替換替代品，適用於 ATSAML11E16A-AFTKPH — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATSAML11E16A-AFTKPH （相同外形與佔位） — 差異在於 Package, Operating Temperature, Core Architecture, ADC, Mounting Type.
ATSAML11E15A-AUTKPH
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAML11E15A-MU
✅ 直接替換聯絡詢價
查看資料表 →ATSAML10E16A-MUT
✅ 直接替換聯絡詢價
查看資料表 →ATSAML11D16A-MFTKPH
✅ 直接替換聯絡詢價
查看資料表 →ATSAMD20E16A-AFT
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAML11E16A-AFTKPH 最大額定值與電氣特性
| Core Architecture | ARM Cortex-M23 (ARMv8-M Baseline) |
| Security Extension | ARM TrustZone-M |
| Max Clock Frequency | 32 MHz |
| Program Memory (Flash) | 64 KB (64K x 8) |
| SRAM | 16 KB |
| 供應電壓 | 1.62 V to 3.63 V |
| 工作溫度 | -40 C to +125 C |
| 封裝 | 32-TQFP (7x7 mm) |
| 安裝類型 | Surface Mount |
| DAC | 10-bit |
| Touch Peripheral | Enhanced PTC (Peripheral Touch Controller) |
| Crypto Acceleration | AES, SHA-256, ECC, TRNG |
| Active Current Consumption | < 25 uA/MHz |
| Sleep Current Consumption | < 100 nA |
| RoHS 狀態 | Compliant |
| MSL 等級 | MSL3 (per JEDEC J-STD-020) |
ATSAML11E16A-AFTKPH 腳位配置
| 腳位 1 | PB00 — General-purpose I/O / ADC input |
| 腳位 2 | PB01 — General-purpose I/O / ADC input |
| 腳位 3 | PB02 — General-purpose I/O |
| 腳位 4 | PB03 — General-purpose I/O |
| 腳位 5 | VDDIO — I/O supply voltage |
| 腳位 6 | VSS — Ground |
| 腳位 7 | VDDCORE — Internal core voltage regulator supply |
| 腳位 8 | PA00 — General-purpose I/O / XIN |
| 腳位 9 | PA01 — General-purpose I/O / XOUT |
| 腳位 10 | PA02 — General-purpose I/O / PTC |
| 腳位 11 | PA03 — General-purpose I/O / PTC |
| 腳位 12 | PA04 — General-purpose I/O / PTC |
| 腳位 13 | PA05 — General-purpose I/O / PTC |
| 腳位 14 | PA06 — General-purpose I/O / PTC |
| 腳位 15 | PA07 — General-purpose I/O / PTC |
| 腳位 16 | PA08 — General-purpose I/O / PTC |
| 腳位 17 | PA09 — General-purpose I/O |
| 腳位 18 | PA10 — General-purpose I/O |
| 腳位 19 | PA11 — General-purpose I/O / PTC |
| 腳位 20 | PA12 — General-purpose I/O / PTC |
| 腳位 21 | PA13 — General-purpose I/O / PTC |
| 腳位 22 | PA14 — General-purpose I/O / PTC |
| 腳位 23 | PA15 — General-purpose I/O |
| 腳位 24 | PA16 — General-purpose I/O |
| 腳位 25 | PA17 — General-purpose I/O |
| 腳位 26 | PA18 — General-purpose I/O / SWDIO |
| 腳位 27 | PA19 — General-purpose I/O / SWCLK |
| 腳位 28 | RESET — Reset input (active low) |
| 腳位 29 | AVDD — Analog supply voltage |
| 腳位 30 | AVSS — Analog ground |
| 腳位 31 | VDD — Main digital supply voltage |
| 腳位 32 | VSS — Ground |
典型應用
ATSAML11E16A-AFTKPH 適用於 6 應用s: Secure IoT Sensor Nodes, Battery-Powered Wearable Devices, Smart Home Wireless Switches and Touch Panels, Industrial Secure Sensor Endpoints, Medical Wearables and Connected Health Devices, Automotive Secure Remote Keyless Entry (Sub-MCU).
Secure IoT Sensor Nodes
The ATSAML11E16A-AFTKPH's less than 100 nA Hibernate mode and TrustZone-M make it ideal for secure wireless sensor nodes that sleep for the vast majority of a duty cycle. With Cortex-M23 at 32 MHz it wakes fast enough to process BLE/Zigbee frames, run AES-128 authenticated reads, and verify ECC-signed firmware before returning to deep sleep. Designers pair the L11 with an external 2.4 GHz transceiver (e.g., AT86RF215) or use it as a sub-controller to a higher-power SoC. Hardware secure boot and immutable root-of-trust simplify PSA Certified Level 1 design.
推薦
Battery-Powered Wearable Devices
The ATSAML11E16A-AFTKPH powers wearable bands, smart patches, and fitness sensors where every microamp matters. Under 25 uA/MHz active consumption preserves coin-cell run-time, while sub-100 nA Hibernate extends shelf life to multi-year spans. The Enhanced Peripheral Touch Controller implements capacitive buttons and sliders without needing a separate touch controller, and the 12-bit ADC supports accurate photoplethysmography (PPG) and body-temperature sensing. TrustZone-M partitions biometric data from the wireless stack, satisfying privacy-sensitive regulatory reviews.
推薦
Smart Home Wireless Switches and Touch Panels
The ATSAML11E16A's Enhanced Peripheral Touch Controller and Cortex-M23 throughput suit wall switches, dimmers, and capacitive touch panels that require haptic-grade robustness. Unlike mechanical switches, capacitive touch is sealed against dust and humidity, with the PTC providing moisture-tolerant touch discrimination. Less than 25 uA/MHz active and under 100 nA sleep permit years of battery operation on 2x AA cells. Hardware crypto acceleration protects secure commissioning against replay attacks and rogue controller injection.
推薦
Industrial Secure Sensor Endpoints
The ATSAML11E16A-AFTKPH's -40 to +125 C operating range and built-in security suits industrial sensor endpoints subject to IEC 62443 cyber-security requirements. Its Cortex-M23 runs deterministic protocols like IO-Link while AES/SHA accelerates authenticated communications. The hardware tamper engine and secure key storage protect vendor credentials provisioned at module manufacture, even in harsh factory environments. Hibernate at sub-100 nA suits energy-harvested wireless transmitters on rotating machinery.
推薦
Medical Wearables and Connected Health Devices
The ATSAML11E16A-AFTKPH powers medical-grade wearables including continuous glucose monitors (CGM), smart inhalers, and connected health patches. The Cortex-M23 enables deterministic real-time ECG/PPG signal chains, while the 12-bit ADC and 10-bit DAC handle low-noise analog front-end processing. TrustZone-M isolates patient-identifiable health information from firmware-update and remote-debug channels, supporting FDA cyber-security guidance on medical devices. Sub-100 nA Hibernate keeps implantable or body-worn sensors operating for months on small Li-ion batteries.
推薦
Automotive Secure Remote Keyless Entry (Sub-MCU)
The ATSAML11E16A-AFTKPH powers sub-MCUs in secure key fobs and immobilizer modules. TrustZone-M and AES/SHA acceleration realize rolling-code authentication and signed firmware, while the AES engine accelerates challenge-response key protocols. The Cortex-M23 at 32 MHz handles debounced user input, LED control, and cryptographic verification without external crypto co-processors. Sub-100 nA sleep extends coin-cell lifetime to multi-year spans, and the wide 1.62 to 3.63 V supply tolerates weak or aged coin cells during transmission peaks.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAML11E16A-AFTKPH — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATSAML11E15A-AUTKPH | ATSAML11E15A-MU | ATSAML10E16A-MUT | ATSAML11D16A-MFTKPH | ATSAMD20E16A-AFT |
|---|---|---|---|---|---|---|
| Package | TQFP-32 (7x7 mm) | TQFP-32 (7x7 mm) - same | TQFP-32 family - same | TQFP-32 (7x7 mm) - same | TQFP-32 family - same | TQFP-32 (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Core | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M0+ |
| Flash / SRAM | 64 KB / 16 KB | 32 KB / 16 KB (-50% Flash) | 32 KB / 16 KB (-50% Flash) | 64 KB / 16 KB | 64 KB / 16 KB | 64 KB / 8 KB (-50% SRAM) |
| TrustZone-M Security | Yes | Yes | Yes | No | Yes | No |
| Max Clock Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 48 MHz (+50%) |
| Supply Voltage | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V |
| 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 |
| Sleep Current | <100 nA | <100 nA | <100 nA | <100 nA | <100 nA | <3 uA (3x higher) |
主要差異化特點
- ARM TrustZone-M hardware isolation (對比ATSAML10E16A-MUT)
- Hardware crypto accelerator suite (對比ATSAMD20E16A-AFT)
- Sub-100 nA Hibernate current (對比ATSAMD20E16A-AFT)
- Enhanced Peripheral Touch Controller (PTC) (對比ATSAML10E16A-MUT)
設計說明
Estimated: To meet the <100 nA sleep-current spec in Hibernate, ensure no peripheral bias leakage. Verify by measuring the ATSAML11E16A VDD current with no MCU activity and an isolated analog rail; expect ~50-90 nA typical. Disable the BOR in firmware for the lowest Hibernate numbers if the supply is regulated. Add a 1 uF X7R plus 100 nF X7R pair right at VDDCORE, and a 100 nF X7R right at VDDIO - the L11's supply-rejection ratio degrades without adequate local decoupling.
The ATSAML11E16A typically dissipates <50 mW, so thermal derating is rarely a constraint at 1.62 V to 3.63 V. However, in extended +85 C to +125 C environments, validate with the per-temperature current derating curves in the datasheet - active current at +125 C can be 1.5-2x the room-temperature value. For fanless or sealed enclosures, measure ambient temperature during worst-case DHCP/handshake workloads and confirm junction temperature does not exceed +95 C at the worst case.
Place a 100 nF plus 1 uF X7R capacitor pair within 5 mm of VDDIO and VDDCORE to suppress switching noise. For analog measurements (ADC), route AVDD/AVSS with a star-ground topology and keep the analog traces away from SWD and Reset lines. Use a 5 mil trace and 8 mil clearances for the 32-TQFP pins. The SAM L11 datasheet has a reference layout - follow it for the ANTON-to-PCB thermal anchor and PTC touch electrode routing.
Watch out for: (1) Attempting to use TrustZone-M without first provisioning BOOTPROT fuses, which silently disables the secure attribute mapper; (2) Forgetting to enable the PTC clock before configuring touch channels, leading to undetectable touch events; (3) Using GPIO pins 30-31 (VSS/VDD) as general-purpose I/O which are fixed as power pins; (4) TrustZone projects programmed with debug disabled cannot be recovered, so always leave a non-secure bootloader in the secure bootloader image. Plan before locking BOOTPROT.
When the ATSAML11E16A-E16 is paired with an external SPI/I2C peripheral (sensor, radio), use series resistor + short stub routing on high-speed SPI lines to dampen reflections above 10 MHz. For 4-wire SWD debug, route SWDIO/SWDCLK with parallel-ground shielding and keep trace length under 60 mm. The Cortex-M23 implements tightly-coupled memory, so flash wait-states only become an issue above 32 MHz - stick to 32 MHz to avoid wait-state insertion.
合規資訊
Compliant with RoHS directive per Microchip product page. PSA Certified Level 1 capable via TrustZone-M. Operating -40 C to +125 C; no AEC-Q100 automotive qualification.
