ATSAML11E15A-AUKPH - Cortex-M23 MCU w/ TrustZone, 32KB Flash | Microchip
MPN: ATSAML11E15A-AUKPH β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.39 | $1,195.00 |
| 1,000 | $2.05 | $2,050.00 |
| 3,000 | $1.78 | $5,340.00 |
ATSAML11E15A-AUKPH Overview
The Cortex-M23 core is the smallest and most energy-efficient ARMv8-M architecture implementation, featuring TrustZone for hardware-isolated secure and non-secure code execution, a single-cycle hardware multiplier, and a tightly-coupled Nested Vectored Interrupt Controller (NVIC). Combined with on-chip secure key storage, chip-level tamper resistance, and Microchip's Trustonic Kinibi-M library, the SAM L11 enables PSA Certified Level 1 security out of the box for IoT edge devices.
Key features include a 32 KB Flash program memory, 8 KB SRAM, 2 KB EEPROM emulation area, a 12-bit 1 Msps ADC, two analog comparators, two I2C, two SPI, one I2S, up to four SERCOM channels, and a Real-Time Clock (RTC) with calendar mode. The device operates from 1.62 V to 3.63 V supply, supports industrial -40 Β°C to +85 Β°C temperature range, and integrates a 32 kHz crystal oscillator with PLL for flexible clocking. Multiple low-power modes including STANDBY (with full SRAM retention), IDLE, and OFF enable designers to meet aggressive energy budgets for always-on sensor applications.
Typical applications include secure IoT end nodes, smart meters, wireless sensor nodes, asset tracking devices, medical wearables, and industrial HMI controllers. The ARM TrustZone-M isolation makes it especially suited for devices requiring firmware authentication, secure boot, and protection against physical tamper attacks.
Drop-in alternatives for ATSAML11E15A-AUKPH β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATSAML11E15A-AUKPH (same form factor and footprint) β differing in Operating Temperature, Package, ADC, Flash Memory, Core Architecture.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATSAML11E15A-AFKPH
β Drop-Inπ Reference alternative (not in catalog)
ATSAML11E15A-AFT
β Drop-Inβ In Stock
$1.95 / Unit
View Datasheet βATSAML11E16A-AUKPH
β Drop-Inπ Reference alternative (not in catalog)
ATSAML11E14A-AUTKPH
β Drop-Inπ Reference alternative (not in catalog)
ATSAML10E15A-AU
β Drop-Inβ In Stock
$1.92 / Unit
View Datasheet βATSAML11D15A-MU
β Drop-Inβ In Stock
$1.95 / Unit
View Datasheet βATSAML11E15A-AUKPH Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM Cortex-M23 (ARMv8-M with TrustZone-M) |
| CPU Frequency | 32 MHz max |
| Flash Memory | 32 KB |
| SRAM | 8 KB |
| EEPROM (Emulated) | 2 KB |
| Operating Voltage | 1.62 V to 3.63 V |
| Operating Temperature | -40 Β°C to +85 Β°C (Industrial) |
| Package | 32-pin TQFP (7x7 mm) |
| Active Current | <25 Β΅A/MHz |
| Sleep Current | <100 nA (RTC running) |
| ADC | 12-bit, 1 Msps, up to 10 channels |
| Analog Comparators | 2 |
| Communication Interfaces | 2x I2C, 2x SPI, 1x I2S, 4x SERCOM |
| Security | TrustZone-M, secure key storage, tamper detection, PSA Certified Level 1 |
| Crypto Acceleration | AES, SHA, TRNG (Trustonic Kinibi-M) |
| RTC | Yes, with calendar mode and 32 kHz oscillator |
| GPIOs | Up to 27 |
| RoHS Status | Compliant |
ATSAML11E15A-AUKPH Pin Configuration
| Pin 1 | PA03 β GPIO / ADC AIN[1] / SERCOM pad |
| Pin 2 | PA04 β GPIO / ADC AIN[2] / SERCOM pad |
| Pin 3 | PA05 β GPIO / ADC AIN[3] / SERCOM pad |
| Pin 4 | PA06 β GPIO / ADC AIN[4] / SERCOM pad |
| Pin 5 | PA07 β GPIO / ADC AIN[5] / SERCOM pad |
| Pin 6 | PA08 β GPIO / ADC AIN[6] / SERCOM pad |
| Pin 7 | PA09 β GPIO / ADC AIN[7] / SERCOM pad |
| Pin 8 | PA10 β GPIO / ADC AIN[8] / SERCOM pad |
| Pin 9 | PA11 β GPIO / ADC AIN[9] / SERCOM pad |
| Pin 10 | VDD β Digital supply voltage (1.62V to 3.63V) |
| Pin 11 | VSS β Digital ground |
| Pin 12 | PA14 β GPIO / SERCOM pad |
| Pin 13 | PA15 β GPIO / SERCOM pad |
| Pin 14 | PA16 β GPIO / SERCOM pad / I2S SCK |
| Pin 15 | PA17 β GPIO / SERCOM pad / I2S FS |
| Pin 16 | PA18 β GPIO / SERCOM pad |
| Pin 17 | PA19 β GPIO / SERCOM pad |
| Pin 18 | PA20 β GPIO / SERCOM pad |
| Pin 19 | PA21 β GPIO / SERCOM pad |
| Pin 20 | PA22 β GPIO / SERCOM pad / I2S SDO |
| Pin 21 | PA23 β GPIO / SERCOM pad |
| Pin 22 | PA24 β GPIO / SERCOM pad |
| Pin 23 | PA25 β GPIO / SERCOM pad |
| Pin 24 | PA27 β GPIO / SERCOM pad |
| Pin 25 | RESET β Reset input (active low) |
| Pin 26 | SWDIO β Serial Wire Debug data |
| Pin 27 | SWCLK β Serial Wire Debug clock |
| Pin 28 | VDDIO β I/O supply voltage |
| Pin 29 | VSS β Digital ground |
| Pin 30 | PA30 β GPIO / SERCOM pad |
| Pin 31 | PA31 β GPIO / SERCOM pad |
| Pin 32 | VDDANA β Analog supply voltage |
Typical Applications
ATSAML11E15A-AUKPH is suitable for 7 applications: Secure IoT Sensor Nodes, Smart Meters and Utility Monitoring, Medical Wearables and Health Monitors, Industrial HMI and Control Panels, Smart Home and Connected Appliances, Asset Tracking and Logistics Devices, Authentication Tokens and Secure Accessories.
Secure IoT Sensor Nodes
The ATSAML11E15A-AUKPH is purpose-built for secure IoT edge sensor nodes requiring hardware-rooted trust. Its <100 nA sleep current with RTC running extends battery life to multi-year operation on a single CR2032 coin cell, while the <25 Β΅A/MHz active current keeps energy harvesting designs viable. The ARM TrustZone-M isolates secure firmware from application code, enabling secure boot and signed firmware updates required for PSA Certified Level 1 compliance - critical for connected sensors handling authentication data. The 32 KB Flash fits typical sensor-hub firmware plus a Kinibi-M security library, while 8 KB SRAM supports BLE/Zigbee stack fragments or LoRaWAN MAC layer processing.
Recommended
Smart Meters and Utility Monitoring
Smart electricity, water, and gas meters benefit from the ATSAML11E15A-AUKPH's tamper detection and TrustZone-M security. The MCU's chip-level tamper resistance detects voltage glitches, frequency manipulation, and physical probing attempts - exactly the attack vectors used in meter tampering. Hardware-isolated secure storage protects cryptographic keys for billing integrity, while the integrated 12-bit 1 Msps ADC captures power-line current/voltage waveforms for accurate energy measurement. The 32-TQFP industrial-grade package operates from -40 Β°C to +85 Β°C suitable for outdoor meter enclosures, and the RTC with calendar mode supports time-of-use billing without external RTC chips.
Recommended
Medical Wearables and Health Monitors
Wearable medical devices such as continuous glucose monitors (CGM), pulse oximeters, and smart insulin pens leverage the ATSAML11E15A-AUKPH's combination of ultra-low power and hardware security. Sub-100 nA sleep current preserves battery life during inactive periods, while the Cortex-M23 core processes sensor data efficiently when active. TrustZone-M protects patient health information (PHI) in compliance with HIPAA data-at-rest requirements, and secure boot prevents malicious firmware injection onto the wearable. The integrated 12-bit ADC digitizes analog biosensor signals directly, reducing BOM cost in compact wearable form factors.
Recommended
Industrial HMI and Control Panels
Industrial human-machine interface (HMI) controllers, building automation panels, and equipment front-end displays use the ATSAML11E15A-AUKPH to add secure touch and display control at low cost. The Cortex-M23 with TrustZone isolates the secure bootloader and credential storage from the user-facing application, preventing firmware reverse-engineering by competitors. The SERCOM peripherals support SPI displays and I2C touch controllers directly, while the 12-bit ADC reads analog control inputs. Industrial -40 Β°C to +85 Β°C temperature range supports factory floor deployment, and the 32-TQFP package with 0.8 mm pitch suits compact panel designs.
Recommended
Smart Home and Connected Appliances
Connected home appliances such as smart locks, thermostats, and security sensors benefit from the ATSAML11E15A-AUKPH's PSA Certified Level 1 security and ultra-low power profile. Smart locks specifically require tamper-resistant secure key storage to prevent lock-bypass attacks - the SAM L11's TrustZone-M and on-chip key storage meet this requirement. Battery-powered thermostats run for years on a pair of AA cells thanks to the <100 nA sleep current with RTC running. The MCU's I2C/SPI peripherals interface directly with environmental sensors and BLE/Zigbee modules for whole-home mesh connectivity.
Recommended
Asset Tracking and Logistics Devices
Battery-powered asset tracking devices, BLE beacons, and logistics tags use the ATSAML11E15A-AUKPH for multi-year operation on primary cells. The sub-100 nA sleep current enables devices that wake periodically for GPS/location updates and remain off the rest of the time, extending battery life to 5+ years. TrustZone-M secures the device's identity certificate and prevents cloning of valuable assets. The integrated RTC eliminates external real-time clock chips, reducing BOM cost and PCB area for compact tracker form factors. The 32-TQFP package is easy to reflow on standard SMT lines.
Recommended
Authentication Tokens and Secure Accessories
Hardware authentication tokens, secure USB keys, and cryptographic accessories leverage the ATSAML11E15A-AUKPH's TrustZone-M and on-chip crypto acceleration. The MCU performs SHA, AES, and TRNG operations in hardware, supporting FIDO2/WebAuthn security keys and TPM-like functionality at a fraction of dedicated security chip cost. Secure key storage in TrustZone-protected Flash prevents extraction even with physical access. The compact 32-TQFP package suits USB stick form factors, and the low active current enables token operation without external power supplies.
Recommended
Recommended Products Summary
Engineering reference data for ATSAML11E15A-AUKPH β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAML11E15A-AFKPH | ATSAML11E16A-AUKPH | ATSAML11E14A-AUTKPH | ATSAML10E15A-AU |
|---|---|---|---|---|---|
| Package | 32-TQFP (7x7 mm) | 32-TQFP (7x7 mm) | 32-TQFP (7x7 mm) | 32-TQFP (7x7 mm) | 32-TQFP (7x7 mm) |
| 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 + TrustZone-M | Cortex-M23 (no TrustZone) |
| Flash Memory | 32 KB | 32 KB | 64 KB | 16 KB | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 4 KB | 8 KB |
| Max CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| TrustZone-M Security | Yes | Yes | Yes | Yes | No |
| Active Current | <25 Β΅A/MHz | <25 Β΅A/MHz | <25 Β΅A/MHz | <25 Β΅A/MHz | <25 Β΅A/MHz |
| Operating Temperature | -40 Β°C to +85 Β°C | -40 Β°C to +85 Β°C | -40 Β°C to +85 Β°C | -40 Β°C to +85 Β°C | -40 Β°C to +85 Β°C |
Key Differentiators
- TrustZone-M hardware security isolation (vs ATSAML10E15A-AU)
- Double Flash memory for future-proofing (vs ATSAML11E14A-AUTKPH)
- Ultra-low sleep current for battery operation (vs Generic Cortex-M0+ MCUs)
Design Notes
The SAM L11 has multiple power domains: VDD (digital core), VDDIO (I/O rail), and VDDANA (analog). Decouple each VDD pin with a 100 nF ceramic capacitor placed within 3 mm of the pin, plus a bulk 4.7 Β΅F capacitor per rail. For battery applications, route VDDANA through a ferrite bead from VDDIO to isolate analog noise from switching digital I/O. The on-chip voltage regulator (LDO) generates internal core voltage - no external inductor required.
Route the SWDIO and SWCLK traces as a matched-length pair (within 2 mm) to the debug header. Place a 4.7 kΞ© pull-up on SWDIO and 4.7 kΞ© pull-down on SWCLK to enable reliable debug probe connection. Keep the RESET trace short and place a 10 kΞ© pull-up to VDDIO plus a 1 nF capacitor to ground for noise filtering. The 32 kHz crystal traces should be short, symmetric, and surrounded by ground guard ring.
Do not confuse the ATSAML11E15A-AUKPH (Tray packaging) with ATSAML11E15A-AFKPH (Tape & Reel) when ordering - they share identical silicon but different factory packaging. The 32-TQFP-32 package is pin-compatible across the SAM L10 and SAM L11 families, but TrustZone-M features are unavailable on the SAM L10. Verify the BOM matches the security requirements - SAM L10 cannot run TrustZone-M code even if firmware expects it.
Estimated: At maximum 32 MHz operation with all peripherals active, the SAM L11 consumes approximately 25 Β΅A/MHz Γ 32 MHz = 800 Β΅A active current at 3.3 V, resulting in 2.6 mW power dissipation. The 32-TQFP package has thermal resistance ΞΈJA of approximately 65 Β°C/W (per Microchip package thermal data), giving junction temperature rise of only 0.17 Β°C above ambient - no thermal management required. However, if used in a sealed enclosure with no airflow at high ambient, verify with a thermocouple measurement.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial -40 Β°C to +85 Β°C temperature range. Not AEC-Q100 qualified - choose ATSAML11E15A-AUTKPH-AQ variant for automotive applications.
