ATSAML11E14A-AF - SAM L11 Cortex-M23 32MHz MCU w/ TrustZone | Microchip
料号： ATSAML11E14A-AF ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.65 | $3.65 |
| 10 | $3.42 | $34.20 |
| 100 | $3.05 | $305.00 |
| 500 | $2.72 | $1,360.00 |
| 1,000 | $2.45 | $2,450.00 |
ATSAML11E14A-AF 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O onto one die. Low-power 32-bit MCUs like the SAM L11 sit within the broader taxonomy of: MCU -> embedded microcontroller -> semiconductor device. They are typically paired with sensors, radios, and power management ICs to build battery-operated or energy-harvesting edge devices. The Cortex-M23 core specifically targets low-power deterministic embedded workloads with the optional TrustZone security extension.
Key features include ARM TrustZone-M security, secure key storage, chip-level tamper resistance, True Random Number Generator (TRNG), Secure Boot, and a cryptographic accelerator. The device supports 1.62V to 3.63V supply voltage, an operating temperature range of -40C to +125C, and integrates peripherals such as SERCOM, ADC, and timers. The cryptographic hardware includes AES, SHA, and public-key accelerators, enabling secure firmware update and authenticated sensing.
Architecturally, the SAM L11 uses a Cortex-M23 core with a single-cycle multiplier and hardware divide, a Memory Protection Unit (MPU), and TrustZone for Cortex-M that splits memory and peripherals into Secure and Non-Secure worlds. The 16 KB Flash and 8 KB SRAM are accessed through tightly-coupled low-power buses, allowing fast wake-up from sleep states while retaining RAM.
Typical applications include IoT end nodes, secure sensor hubs, smart meters, medical wearables, and battery-powered authentication tokens. The device is also widely used in industrial sensor networks where secure boot and tamper detection are mandatory. The AEC-Q100 qualified grade supports automotive deployments.
When designing with the SAM L11, plan for separate secure/non-secure linker regions and allocate the cryptographic accelerator for AES-128/256 or SHA-256 workloads. The 100 nA sleep current enables multi-year battery life on coin cells when duty-cycling wake events carefully.
This page synthesizes distributor pricing, drop-in alternatives within the SAM L10/L11 family, and practical design notes not found in the manufacturer datasheet alone.
直接替换替代料： ATSAML11E14A-AF ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATSAML11E14A-AF （相同外形与封装尺寸） ——差异在于 Operating Temperature, Package, Core Architecture, Mounting Type, ADC.
快速对比工具——选择替代料号进行并排对比：
ATSAML11E14A-AFT
✅ 直接替换✓ 有现货
$2.19 / 个
查看数据手册 →ATSAML11E14A-AU
✅ 直接替换✓ 有现货
$1.05 / 个
查看数据手册 →ATSAML11E15A-AF
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.34 / 个
查看数据手册 →ATSAML11D14A-MUT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.62 / 个
查看数据手册 →ATSAML11D15A-AF
✅ 直接替换📋 参考替代料（不在目录中）
ATSAML11E14A-AF 最大额定值与电气特性
| Core | ARM Cortex-M23 with TrustZone |
| CPU Bit Width | 32-bit |
| Maximum CPU Frequency | 32 MHz |
| Program Memory (Flash) | 16 KB (16K x 8) |
| RAM (SRAM) | 8 KB |
| Supply Voltage (VDD) | 1.62 V to 3.63 V |
| 工作温度 | -40C to +125C |
| Active Mode Current | <25 uA/MHz |
| Sleep Mode Current | <100 nA |
| 封装 | 32-TQFP (7x7 mm) |
| 安装类型 | Surface Mount |
| Security Features | TrustZone-M, Secure Boot, TRNG, Tamper Detection, Crypto Accelerator |
| Cryptographic Accelerator | AES, SHA-256, Public-Key |
| Automotive Qualification | AEC-Q100 (per datasheets.com parametric listing) |
| Peripherals | SERCOM, ADC, Timers, RTC |
ATSAML11E14A-AF 引脚配置
| 引脚 1 | PA00 — GPIO/ADC/SERCOM (peripheral-mux capable) |
| 引脚 2 | PA01 — GPIO/ADC/SERCOM |
| 引脚 3 | PA02 — GPIO/ADC/SERCOM (alternatively AIN0 / VOUT) |
| 引脚 4 | PA03 — GPIO/ADC/SERCOM |
| 引脚 5 | GND — Ground |
| 引脚 6 | VDD — Core supply voltage 1.62-3.63 V |
| 引脚 7 | PA04 — GPIO/ADC/SERCOM |
| 引脚 8 | PA05 — GPIO/ADC/SERCOM |
| 引脚 9 | PA06 — GPIO/ADC/SERCOM |
| 引脚 10 | PA07 — GPIO/ADC/SERCOM |
| 引脚 11 | PA08 — GPIO/SERCOM (NMI optional) |
| 引脚 12 | PA09 — GPIO/SERCOM |
| 引脚 13 | PA10 — GPIO/SERCOM |
| 引脚 14 | PA11 — GPIO/SERCOM |
| 引脚 15 | PA12 — GPIO/SERCOM |
| 引脚 16 | PA13 — GPIO/SERCOM (alternatively XOUT32) |
| 引脚 17 | PA14 — GPIO/SERCOM (alternatively XIN32) |
| 引脚 18 | PA15 — GPIO/SERCOM |
| 引脚 19 | PA16 — GPIO/SERCOM |
| 引脚 20 | PA17 — GPIO/SERCOM |
| 引脚 21 | PA18 — GPIO/SERCOM |
| 引脚 22 | PA19 — GPIO/SERCOM |
| 引脚 23 | PA20 — GPIO/SERCOM |
| 引脚 24 | PA21 — GPIO/SERCOM |
| 引脚 25 | PA22 — GPIO/SERCOM |
| 引脚 26 | PA23 — GPIO/SERCOM |
| 引脚 27 | PA24 — GPIO/SERCOM (alternatively USB DM) |
| 引脚 28 | PA25 — GPIO/SERCOM (alternatively USB DP) |
| 引脚 29 | PA27 — GPIO/SERCOM (alternatively BOOT) |
| 引脚 30 | RESET — Active-low reset input |
| 引脚 31 | VDDIO — I/O supply voltage (can equal VDD) |
| 引脚 32 | GND — Ground |
典型应用
ATSAML11E14A-AF 适用于 6 应用s: IoT Secure End Nodes, Smart Metering & Utility Sensors, Medical Wearables & Health Monitors, Industrial Sensor Hubs, Automotive Secure Authentication, Battery-Powered Authentication Tokens.
IoT Secure End Nodes
The ATSAML11E14A-AF suits battery-powered IoT end nodes that need TrustZone isolation between secure firmware and untrusted application code. With <25 uA/MHz active current and <100 nA sleep current, the device achieves multi-year coin-cell runtime for duty-cycled sensing. The on-chip AES/SHA accelerator secures MQTT-TLS handshakes without loading the Cortex-M23 core, while secure boot prevents malicious firmware injection during field updates.
推荐
Smart Metering & Utility Sensors
The SAM L11 MCU's tamper detection, TRNG, and secure boot are mandatory features for smart electricity, water, and gas metering. The ATSAML11E14A-AF executes metering algorithms on its Cortex-M23 core while the crypto accelerator handles authentication with utility head-ends. The 1.62-3.63 V VDD range accepts direct battery connection for retrofit meters, and the 100 nA sleep current supports 10+ year battery life.
推荐
Medical Wearables & Health Monitors
The ATSAML11E14A-AF enables compact medical wearables that demand both low power and strong data security for HIPAA/GDPR compliance. Its sub-100 nA sleep current extends patch battery life during continuous monitoring, while TrustZone isolates patient-identifiable data from non-secure application code. The 32-TQFP package fits small-form-factor wearables, and the AES accelerator offloads real-time encryption of biosensor streams.
推荐
Industrial Sensor Hubs
The ATSAML11E14A-AF is a strong fit for industrial 4.0 sensor hubs that aggregate multiple analog and digital sensors and publish authenticated data to PLCs or the cloud. The SERCOM peripherals provide flexible UART/SPI/I2C connectivity to sensor arrays, while the 32 MHz Cortex-M23 handles protocol stacks. The -40C to +125C operating temperature range supports factory-floor deployments.
推荐
Automotive Secure Authentication
The ATSAML11E14A-AF is AEC-Q100 qualified, supporting automotive use cases like secure key fobs, V2X authentication, and in-cabin secure controllers. The TrustZone isolation is critical for protecting immobilizer secrets and over-the-air update keys. The on-chip crypto accelerator performs rapid challenge-response authentication against vehicle ECUs, with sub-microsecond wake-up from sleep for key-fob button presses.
推荐
Battery-Powered Authentication Tokens
The ATSAML11E14A-AF is excellent for FIDO2 / WebAuthn hardware tokens, secure access cards, and supply-chain authentication labels. TrustZone isolates the credential vault from the untrusted USB or NFC interface, while the TRNG seeds ephemeral session keys. The 16 KB Flash stores multiple credentials, and the <100 nA sleep current enables 3+ year battery life on standard CR2032 cells.
推荐
推荐产品汇总
工程参考数据： ATSAML11E14A-AF ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ATSAML11E14A-AFT | ATSAML11E14A-AU | ATSAML11E15A-AF | ATSAML11D14A-MUT | ATSAML11D15A-AF |
|---|---|---|---|---|---|---|
| Package | 32-TQFP (7x7 mm) | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Core | Cortex-M23 + TrustZone | Cortex-M23 + TrustZone | Cortex-M23 + TrustZone | Cortex-M23 + TrustZone | Cortex-M23 + TrustZone | Cortex-M23 + TrustZone |
| Max CPU Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 16 KB | 16 KB | 16 KB | 32 KB | 8 KB | 16 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 4 KB | 8 KB |
| Supply Voltage | 1.62-3.63 V | 1.62-3.63 V | 1.62-3.63 V | 1.62-3.63 V | 1.62-3.63 V | 1.62-3.63 V |
| Packaging Format | Tray | Tape & Reel | Tray | Tray | Tape & Reel | Tray |
| Automotive Grade | AEC-Q100 (per datasheets.com listing) | AEC-Q100 | Industrial | AEC-Q100 | Industrial | Industrial |
关键差异点
- TrustZone-M hardware isolation unique at this Flash size tier （对比 ATSAML10E16A-MU (no TrustZone))
- Larger 32 KB Flash upgrade path in same footprint （对比 ATSAML11E15A-AF (same family, 32 KB Flash))
- Tape-and-Reel option for SMT assembly lines （对比 ATSAML11E14A-AFT (Tape & Reel packaging))
设计说明
Estimated: at 3.3 V VDD, 32 MHz active CPU, all peripherals off, the ATSAML11E14A-AF draws approximately 25 uA/MHz (datasheet maximum). Burst-duty calculations must include wake-from-sleep time (about 1.5 ms DFLL lock) when budgeting for coin-cell nodes. Place a 100 nF X7R cap on each VDD pin plus 4.7 uF bulk near the IC.
Route the XIN32/XOUT32 32.768 kHz crystal traces as short and symmetric as possible (under 5 mm each), and guard them with a ground pour. The internal DFLL reference at 32 kHz determines RTC accuracy; mechanical stress or noisy injection from the switching regulator ground return will degrade RTC timing to >50 ppm.
Do not enable TrustZone secure regions without first defining an SAU (Security Attribution Unit) configuration in your linker script. Many engineers report debugger lockouts when the secure bootloader is misconfigured. Use MPLAB X's TrustZone-aware project templates and keep the secure entry point at a fixed address (default 0x00000000).
At 32 MHz active CPU and 3.63 V worst-case VDD, the SAM L11 TQFP-32 package dissipates roughly 60 mW continuously. Junction-to-ambient thermal resistance is approximately 60 C/W on a 2-layer JEDEC board, limiting ambient operation to about 110 C under full load. The -40C to +125C spec assumes normal duty-cycled operation; verify with on-chip temperature sensor for sustained workloads.
合规信息
AEC-Q100 automotive qualification per datasheets.com parametric listing. RoHS and lead-free per Microchip product page. Reach compliance statement available on manufacturer site.
