ATSAML11E16A-AUTKPH - 32MHz Cortex-M23 MCU, TrustZone | Microchip
MPN: ATSAML11E16A-AUTKPH ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 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 |
ATSAML11E16A-AUTKPH Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a range of peripheral interfaces (ADC, timers, communication ports, I/O) into one package. Within the broader semiconductor hierarchy, an MCU sits under microcontrollers -> embedded processors -> semiconductors -> integrated circuits. Cortex-M23 cores specifically target energy-efficient microcontroller applications and add TrustZone-M isolation that lets a designer separate secure firmware regions from application code at the hardware level.
Key features of the ATSAML11E16A-AUTKPH include active-mode consumption under 25 uA/MHz, sleep-mode current under 100 nA, ARM TrustZone-M hardware isolation, on-chip cryptographic accelerators (AES, SHA, secure key storage), chip-level tamper resistance, and an enhanced Peripheral Touch Controller (PTC). The part integrates a 12-bit ADC, 10-bit DAC, two operational amplifiers, two analog comparators, and multiple SERCOM (serial communication) modules that can each be configured as UART, SPI, or I2C.
Architecturally, the device pairs the Cortex-M23 core with Microchip's proprietary security IP and a low-power architecture that supports multiple sleep modes, making it well-suited for battery-powered secure endpoints. The 32 MHz core, 64KB Flash and 16KB SRAM envelope fits comfortably in applications that previously needed a Cortex-M0+ or M3 but now require on-chip secure boot and key storage.
Typical applications include IoT end nodes, secure sensor hubs, smart meters, medical wearables, and touch-based human-machine interfaces that demand hardware-rooted security. The bundled TrustZone-M and crypto acceleration also suit payment terminals and authenticated accessories. Compared with switching regulators, the MCU's internal core regulator keeps sleep current extremely low without external DC-DC overhead.
Designers should budget Flash for both secure and non-secure partitions and use Microchip's MCC/MPLAB Harmony configurator to map peripherals. The 32-TQFP package is hand-solderable and breadboard-friendly, easing prototype bring-up. The KPH suffix on this variant indicates factory key provisioning for secure-element use cases.
This page synthesizes distributor pricing for the ATSAML11E16A-AUTKPH, same-package drop-in alternatives within the SAM L11 family, and practical design notes covering TrustZone partitioning and low-power sleep modes not found in the manufacturer datasheet alone.
Drop-in alternatives for ATSAML11E16A-AUTKPH — 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 ATSAML11E16A-AUTKPH (same form factor and footprint) — differing in Core Architecture, Operating Temperature, Package, ADC, SRAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAML11E16A-AUT
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAML11E15A-AUTKPH
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
ATSAML11E14A-AUTKPH
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
ATSAML11E15A-AUKPH
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.78 / Unit
View Datasheet →ATSAML10E16A-MUT
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.42 / Unit
View Datasheet →ATSAML11E16A-AUTKPH Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM Cortex-M23 |
| Core Clock Speed | 32 MHz |
| Flash Memory | 64 KB (64K x 8) |
| SRAM | 16 KB |
| Operating Voltage Range | 1.62 V to 3.63 V |
| Active Mode Current | < 25 uA/MHz |
| Sleep Mode Current | < 100 nA |
| Package | 32-pin TQFP (7x7 mm) |
| Mounting Type | Surface Mount |
| Security | ARM TrustZone-M, secure key storage, chip-level tamper resistance, integrated crypto (AES/SHA) |
| ADC | 12-bit |
| DAC | 10-bit |
| Operational Amplifiers | 2 on-chip |
| Analog Comparators | 2 on-chip |
| Communication Interfaces | SERCOM (configurable as UART/SPI/I2C) |
| Touch Sensing | Enhanced Peripheral Touch Controller (PTC) |
| Operating Temperature | -40C to +85C (industrial) |
| RoHS Status | Compliant |
| Key Provisioning | Yes (factory-provisioned, KPH suffix) |
ATSAML11E16A-AUTKPH Pin Configuration
| Pin 1 | PA00 — General-purpose I/O / XIN |
| Pin 2 | PA01 — General-purpose I/O / XOUT |
| Pin 3 | GND — Ground |
| Pin 4 | VDDIO — I/O supply voltage |
| Pin 5 | VDDANA — Analog supply voltage |
| Pin 6 | GND — Ground |
| Pin 7 | PA02 — General-purpose I/O |
| Pin 8 | PA03 — General-purpose I/O |
| Pin 9 | PA04 — General-purpose I/O |
| Pin 10 | PA05 — General-purpose I/O |
| Pin 11 | PA06 — General-purpose I/O |
| Pin 12 | PA07 — General-purpose I/O |
| Pin 13 | PA08 — General-purpose I/O |
| Pin 14 | PA09 — General-purpose I/O |
| Pin 15 | PA10 — General-purpose I/O |
| Pin 16 | PA11 — General-purpose I/O |
| Pin 17 | PA14 — General-purpose I/O |
| Pin 18 | PA15 — General-purpose I/O |
| Pin 19 | PA16 — General-purpose I/O |
| Pin 20 | PA17 — General-purpose I/O |
| Pin 21 | PA18 — General-purpose I/O |
| Pin 22 | PA19 — General-purpose I/O |
| Pin 23 | PA22 — General-purpose I/O |
| Pin 24 | PA23 — General-purpose I/O |
| Pin 25 | PA24 — General-purpose I/O |
| Pin 26 | PA25 — General-purpose I/O |
| Pin 27 | PA27 — General-purpose I/O / Bootloader entry |
| Pin 28 | RESET — Reset input, active low |
| Pin 29 | VDD — Core supply voltage |
| Pin 30 | GND — Ground |
| Pin 31 | PA30 — General-purpose I/O / SWDIO |
| Pin 32 | PA31 — General-purpose I/O / SWCLK |
Typical Applications
ATSAML11E16A-AUTKPH is suitable for 6 applications: Secure IoT Sensor Nodes, Battery-Powered Smart Meters, Medical Wearables and Health Monitors, Capacitive Touch Human-Machine Interfaces, Payment Terminals and Authenticated Accessories, Industrial Sensor Hubs with Secure Firmware Update.
Secure IoT Sensor Nodes
The ATSAML11E16A-AUTKPH fits secure IoT sensor nodes because its sub-100 nA sleep current and ARM TrustZone-M allow hardware-isolated secure boot without burning power. With 64KB Flash and 16KB SRAM it stores a secure-boot image plus an application partition comfortably, while the on-chip 12-bit ADC, two op-amps and two analog comparators connect directly to sensors without external signal conditioning. Factory key provisioning (KPH suffix) eliminates the need for in-line provisioning infrastructure at the OEM line.
Recommended
Battery-Powered Smart Meters
Smart utility meters need cryptographic signing of measurements and 10+ year battery life, both of which the ATSAML11E16A-AUTKPH delivers through TrustZone-M isolation and sub-100 nA sleep current. The integrated AES/SHA accelerators offload crypto compute, letting the Cortex-M23 core stay in low-power modes longer. The 32-TQFP package keeps the part hand-solderable for retrofit designs that replace legacy MCUs without reworking the PCB.
Recommended
Medical Wearables and Health Monitors
Medical wearables benefit from the ATSAML11E16A-AUTKPH combination of hardware root-of-trust (TrustZone-M, secure key storage), sub-100 nA sleep draw and on-chip analog peripherals (12-bit ADC, two op-amps, two analog comparators) that interface directly with bio-sensor electrodes. The enhanced PTC supports capacitive touch for sealed wearable enclosures. Factory key provisioning (KPH) simplifies FDA/regulatory submission by ensuring each device ships with a unique identity.
Recommended
Capacitive Touch Human-Machine Interfaces
The enhanced Peripheral Touch Controller (PTC) inside the ATSAML11E16A-AUTKPH drives robust capacitive touch buttons and sliders, while the Cortex-M23 core handles gesture processing and secure UI state. Sub-100 nA sleep allows the touch wake-up to dominate idle power budget, and the 32-TQFP package gives clean PCB routing for matrix-touch layouts. TrustZone-M isolates touch-firmware updates from main application code, preventing UI bricking after field updates.
Recommended
Payment Terminals and Authenticated Accessories
The ATSAML11E16A-AUTKPH's integrated AES/SHA accelerators, secure key storage and tamper response make it a fit for payment terminals and authenticated accessories where on-chip cryptography is mandatory. The KPH suffix removes in-line key injection infrastructure, simplifying manufacturing. The 32 MHz Cortex-M23 core handles PCI-style command processing, and the 64KB Flash is large enough for a secure bootloader plus application image with margin for future updates.
Recommended
Industrial Sensor Hubs with Secure Firmware Update
Industrial sensor hubs need signed firmware updates over their service life, and the ATSAML11E16A-AUTKPH delivers that with TrustZone-M secure boot plus hardware SHA/AES. Sub-100 nA sleep extends battery life in wireless hubs, while the 12-bit ADC and SERCOM interfaces connect to a wide range of industrial sensors. The 32-TQFP (7x7) package with industrial -40C to +85C rating supports deployment in factory-floor enclosures without additional thermal management.
Recommended
Recommended Products Summary
Engineering reference data for ATSAML11E16A-AUTKPH — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAML11E16A-AUT | ATSAML11E15A-AUTKPH | ATSAML11E14A-AUTKPH | ATSAML11E15A-AUKPH | ATSAML10E16A-MUT |
|---|---|---|---|---|---|---|
| Package | 32-TQFP (7x7 mm) | 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 | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 32 KB | 16 KB | 32 KB | 64 KB |
| SRAM | 16 KB | 16 KB | 8 KB | 8 KB | 8 KB | 16 KB |
| TrustZone-M Security | Yes | Yes | Yes | Yes | Yes | No |
| Factory Key Provisioning (KPH) | Yes | No | Yes | Yes | Yes | No |
| Core Clock Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Sleep Current | < 100 nA | < 100 nA | < 100 nA | < 100 nA | < 100 nA | < 100 nA |
| Crypto Acceleration (AES/SHA) | Yes | Yes | Yes | Yes | Yes | No |
Key Differentiators
- Factory-provisioned secure keys (KPH suffix) (vs ATSAML11E16A-AUT)
- Largest Flash in the 32-TQFP SAM L11 family (vs ATSAML11E15A-AUTKPH)
- ARM TrustZone-M hardware isolation (vs ATSAML10E16A-MUT)
Design Notes
Estimated: With active current at 25 uA/MHz and 32 MHz operation, expect roughly 0.8 mA active draw from VDD. In deep sleep the part drops below 100 nA per Microchip, so a 200 mAh coin cell can theoretically support years of mostly-sleep duty cycle. Always decouple VDD, VDDIO and VDDANA with at least one 100 nF ceramic each placed within 5 mm of the respective pins.
Place the 32-TQFP decoupling capacitors (100 nF on VDD, VDDIO, VDDANA; optional 4.7 uF bulk near VDD) as close to the IC as the package allows. Keep the SWD pins (PA30 SWDIO, PA31 SWCLK) routed with a 4-6 cm maximum length to the debugger header, and place the RESET line pull-up (typically 10 kohm to VDDIO) next to pin 28.
The KPH suffix means the part ships with factory-provisioned keys — you cannot rewrite these keys in the field without destroying them. Design your secure firmware update flow to assume immutable root keys, and verify Microchip's provisioning datasheet before integrating into volume production. Also note that the 64KB Flash is split between secure and non-secure partitions by default, so plan the memory map in MPLAB Harmony before writing application code.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial -40C to +85C operating range; not AEC-Q100 qualified (not an automotive-grade part).
