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ATSAML11E15A-AFTKPH - 32KB Cortex-M23 MCU with TrustZone | Microchip
ATSAML11E15A-AFTKPH

ATSAML11E15A-AFTKPH - 32KB Cortex-M23 MCU with TrustZone | Microchip

The Microchip ATSAML11E15A-AFTKPH is an ultra-low-power 32-bit ARM Cortex-M23 microcontroller from the SAM L11 family, featuring ARM TrustZone technology, on-chip crypto acceleration, and 32 KB Flash in a 32-pin TQFP package. It operates at up to 32 MHz core frequency with less than 25 uA/MHz active current and less than 100 nA in sleep mode, making it one of the lowest-power Cortex-M23 MCUs in the industry. The -AFTKPH suffix indicates a 125 C temperature grade, Crypto-enabled, Tape & Reel packaging, and key-provisioned variant. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash and SRAM), and peripherals. The Cortex-M23 is ARM's smallest and most energy-efficient application processor, implementing the ARMv8-M baseline architecture with TrustZone for hardware-isolated secure and non-secure code execution. The SAM L11 family extends this with chip-level tamper resistance, secure key storage, and an enhanced Peripheral Touch Controller (PTC) for capacitive sensing. Key features include 32 KB Flash, 8 KB SRAM, 1.62 V to 3.63 V operating voltage, ARM TrustZone, hardware AES/SHA crypto accelerator, true random number generator (TRNG), secure boot, and an enhanced PTC for touch applications. The 32-pin TQFP package offers ease of hand prototyping and breadboard compatibility for low-volume industrial designs. Architecturally, the ATSAML11E15A integrates an ARM Cortex-M23 core with Microchip's proprietary picoPower technology, a flexible event system, and Microchip's TrustZone-managed secure bootloader. Hardware crypto acceleration offloads AES-128/256 and SHA-256 from software, reducing CPU load and enabling real-time encrypted communication without sacrificing power budget. Typical applications include IoT secure sensor nodes, smart metering, wearable health monitors, secure door locks, and industrial HMI with touch buttons. Its low sleep current also makes it well suited to battery-powered devices such as wireless remote controls and asset trackers. When designing with this device, note that the -AFTKPH variant ships with pre-provisioned root keys and certificates, eliminating the need for in-line provisioning during manufacturing. Plan for 4 KB of Flash to be reserved for the secure bootloader and TrustZone secure services. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single reference for evaluation and sourcing decisions.

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ATSAML11E15A-AU - 32MHz Cortex-M23 MCU w/ TrustZone | Microchip
ATSAML11E15A-AU

ATSAML11E15A-AU - 32MHz Cortex-M23 MCU w/ TrustZone | Microchip

The Microchip Technology ATSAML11E15A-AU is a 32-bit ARM Cortex-M23 microcontroller running at up to 32 MHz with 32 KB of Flash, 8 KB of SRAM, and 2 KB of data EEPROM, housed in a 32-pin TQFP (7x7 mm) industrial-temperature-grade package. It consumes less than 25 µA/MHz in active mode and less than 100 nA in sleep mode, and it integrates ARM TrustZone technology for hardware-isolated secure execution. A microcontroller (MCU) is a compact integrated circuit that combines a CPU core, program memory, data memory, and a rich set of on-chip peripherals such as timers, ADC/DAC, communication interfaces, and GPIO. In the broader system hierarchy, the ATSAML11E15A sits at the Cortex-M23 tier of the Cortex-M family, within the SAM L11 sub-family of 32-bit microcontrollers, under Microchip's SAM family, which itself is part of the wider Microcontrollers category of Integrated Circuits. It is specifically engineered for ultra-low-power and security-critical edge IoT nodes where both battery life and tamper resistance are mandatory. Key features include ARM TrustZone for Cortex-M, secure key storage, chip-level tamper resistance, an event system, a 12-bit 1 Msps ADC, a 10-bit DAC, two SERCOM interfaces (configurable as I2C/SPI/USART), and an integrated capacitive touch peripheral. The 32 KB Flash is organized as 32K x 8 and supports in-system programming via the SWD interface. The microcontroller operates over the full 1.62 V to 3.63 V supply range, accepting both single-cell Li-ion and 3.3 V system rails. The Cortex-M23 core implements the ARMv8-M baseline architecture with TrustZone extensions, allowing secure and non-secure code to coexist on the same die. Hardware crypto accelerators (AES, SHA, TRNG) and secure boot help protect firmware IP from physical and remote attacks. A two-wire SWD debug interface supports both secure and non-secure debugging domains. Typical applications include secure IoT endpoints, wearable health and fitness devices, smart-home sensor hubs, industrial sensor nodes with secure firmware updates, battery-powered medical peripherals, and tamper-resistant metering or access-control products. Designers choose this part when both energy budget and on-chip security are first-order constraints. When designing with this device, allocate pin budget carefully: the 32-pin TQFP provides modest GPIO headroom, so plan peripheral multiplexing against the SERCOM and timer resources before locking the PCB. Watch the absolute-maximum VDD of 3.63 V when using a Li-ion/USB supply rail.

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ATSAML11E15A-AUKPH - Cortex-M23 MCU w/ TrustZone, 32KB Flash | Microchip
ATSAML11E15A-AUKPH

ATSAML11E15A-AUKPH - Cortex-M23 MCU w/ TrustZone, 32KB Flash | Microchip

The Microchip Technology ATSAML11E15A-AUKPH is an ARM Cortex-M23 based 32-bit microcontroller featuring chip-level security with ARM TrustZone technology, 32 KB of Flash, 8 KB of SRAM, and a 32 MHz CPU clock, packaged in a 32-pin TQFP (7x7 mm) for industrial-grade applications. As part of the SAM L11 family, this MCU is positioned as the industry's lowest-power Cortex-M23 device, consuming less than 25 µA/MHz in active mode and less than 100 nA in sleep mode, making it ideal for battery-powered and energy-harvesting end nodes. 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 °C to +85 °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.

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ATSAML11E15A-AUT - 32KB Flash Cortex-M23 TrustZone MCU | Microchip
ATSAML11E15A-AUT

ATSAML11E15A-AUT - 32KB Flash Cortex-M23 TrustZone MCU | Microchip

The Microchip Technology ATSAML11E15A-AUT is an ARM Cortex-M23 based 32-bit microcontroller from the SAM L11 family, featuring 32KB Flash, 8KB SRAM, ARM TrustZone technology, and secure key storage in a 32-pin TQFP (7x7) package. It operates at up to 32 MHz, runs from 1.62V to 3.63V, and consumes less than 25 uA/MHz in active mode and less than 100 nA in sleep mode, making it ideal for battery-powered IoT endpoints. An ARM Cortex-M23 microcontroller is a 32-bit embedded processor core based on the ARMv8-M architecture, designed for low-power applications that require hardware-isolated security. TrustZone for ARMv8-M extends this concept by partitioning code and memory into Secure and Non-Secure worlds at the bus level, enabling chip-level isolation between trusted firmware (bootloader, crypto keys) and application code. The Cortex-M23 sits within the hierarchy: microcontroller -> embedded processor -> SoC -> semiconductor. The SAM L11 family is Microchip's lowest-power Cortex-M23 line with integrated security primitives. Key features of the ATSAML11E15A-AUT include TrustZone-M hardware isolation, secure key storage, chip-level tamper resistance, a 12-bit ADC, multiple SERCOM interfaces for I2C/SPI/UART, and an AES crypto accelerator. The device supports sleep modes down to <100 nA, integrated real-time clock, and a wide operating temperature range suitable for industrial environments. The SAM L11 architecture pairs the Cortex-M23 core with a single-cycle hardware multiplier, Microchip's event system for low-latency peripheral signaling, and a peripheral touch controller. Built on an ultra-low-power process, the device integrates an enhanced Power Management Unit (PMU) with multiple sleep modes and DC-DC buck converter support for maximum efficiency at low load currents. Typical applications include IoT sensor nodes, secure authentication tokens, smart meters, wearable health monitors, and industrial HMI panels. The combination of TrustZone, secure boot, and crypto acceleration makes it particularly well-suited for edge devices that require authenticated firmware updates and tamper-resistant key storage. When designing with this MCU, ensure the Secure/Non-Secure memory partition is mapped at link time using the Microchip Studio or MPLAB X IDE TrustZone linker scripts. Decoupling capacitors (100 nF + 1 uF) must be placed close to VDD pins, and unused GPIOs should be configured as outputs or inputs with internal pull to minimize leakage. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. The SAM L11 datasheet is referenced throughout, with parametric data traced to real distributor listings.

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ATSAML11E15A-MFT - 32KB Flash Cortex-M23 MCU, TrustZone | Microchip
ATSAML11E15A-MFT

ATSAML11E15A-MFT - 32KB Flash Cortex-M23 MCU, TrustZone | Microchip

The Microchip Technology ATSAML11E15A-MFT is an ultra-low-power 32-bit ARM Cortex-M23 microcontroller with ARM TrustZone technology, featuring 32 KB of Flash and 8 KB of SRAM, housed in a 32-pin VQFN (5x5 mm) package with exposed pad. Operating at up to 32 MHz from a 1.62 V to 3.63 V supply, the device integrates chip-level security, secure key storage, and tamper resistance in an exceptionally compact footprint. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash for program code and SRAM for runtime data), and a rich set of peripherals. The ARM Cortex-M23 is a 32-bit core implementing the ARMv8-M baseline architecture, designed for energy-efficient embedded applications. The SAM L11 family is the industry's first Cortex-M23 MCU to integrate ARM TrustZone for hardware-isolated secure and non-secure code execution, making it a foundational element of secure IoT edge nodes. Key features of the ATSAML11E15A-MFT include 32 KB Flash, 8 KB SRAM, a 32 MHz maximum CPU clock, 12-bit ADC, 10-bit DAC, analog comparator, and PTC (Peripheral Touch Controller) for capacitive touch sensing. The device achieves less than 25 µA/MHz active current and less than 100 nA in sleep mode, making it one of the lowest-power Cortex-M23 MCUs available. Security features include secure boot, hardware Crypto accelerators (AES, SHA), secure key storage, and true random number generator (TRNG). Architecturally, the SAM L11 integrates multiple low-power modes (Idle, Standby, Backup, and Off) with sleepwalking peripherals, allowing autonomous peripheral operation without CPU wake-up. The Cortex-M23 core implements the ARMv8-M TrustZone extension with separate secure/non-secure memory regions enforced by the Memory Protection Unit, providing hardware root-of-trust functionality for connected devices. Typical applications include IoT end nodes requiring secure firmware updates, smart sensors with tamper detection, secure authentication tokens, low-power wireless sensor nodes, capacitive touch user interfaces, and battery-powered industrial sensors. The wide operating voltage range supports direct connection to 1.5 V alkaline or 3.3 V regulated supplies. When designing with this device, carefully plan TrustZone memory partitioning early in firmware development - partitioning decisions made after the fact require code refactoring. The VQFN-32 package exposes a thermal pad that must be soldered to the PCB ground pour for optimal thermal and electrical performance. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, security feature comparison, and low-power design notes not found in the standalone manufacturer datasheet.

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ATSAML11E15A-MFTKPH - 32KB Flash TrustZone Cortex-M23 MCU
ATSAML11E15A-MFTKPH

ATSAML11E15A-MFTKPH - 32KB Flash TrustZone Cortex-M23 MCU

The Microchip Technology ATSAML11E15A-MFTKPH is an ultra-low-power 32-bit ARM Cortex-M23 microcontroller with ARM TrustZone technology, featuring 32 KB of Flash, 8 KB of SRAM, and a 32 MHz maximum CPU clock, supplied in a 32-pin VQFN (5x5 mm) package. The part integrates chip-level security, secure key storage, tamper resistance, and an enhanced Peripheral Touch Controller (PTC), making it the industry's lowest-power Cortex-M23 MCU, consuming less than 25 uA/MHz in active mode and less than 100 nA in sleep mode. The "KPH" suffix denotes the extended-grade operating temperature range and the KPH tape-and-reel packaging option. What is an ARM Cortex-M23 microcontroller? The Cortex-M23 is ARM's smallest and most energy-efficient processor implementing the ARMv8-M baseline architecture with optional TrustZone for Cortex-M. As a microcontroller, it sits at the hierarchy "microcontroller (MCU) -> embedded microcontroller -> 32-bit MCU -> ARM Cortex-M MCU -> Cortex-M23 MCU". The SAM L11 family adds hardware cryptography, secure boot, and TrustZone isolation on top of the base M23 core, targeting IoT endpoints that need root-of-trust security without a separate secure element. Key differentiating features include ARM TrustZone for hardware-isolated secure/non-secure code execution, on-chip hardware crypto accelerators (AES, SHA, TRNG), 32 KB Flash, 8 KB SRAM, 32 MHz CPU, 12-bit ADC, enhanced PTC for capacitive touch, SERCOM peripherals, and a wide 1.62 V to 3.63 V operating voltage range. The 32-VQFN package with exposed thermal pad supports compact designs and improved thermal dissipation. The integrated Event System, SleepWalking, and intelligent power-domain gating keep active current below 25 uA/MHz and standby current under 100 nA, enabling years of operation from a single coin cell. Typical applications include secure IoT end nodes, smart-home sensor hubs, electronic locks and access control, wireless sensor nodes (BLE/Zigbee companion MCUs), medical wearables, secure payment terminals, and industrial HMI with capacitive touch. The combination of TrustZone isolation and hardware crypto lets designers implement secure firmware update, secure boot, and authenticated peripherals without an external secure element. For design, plan decoupling on every VDD pin with a 100 nF X7R placed within 2 mm of the pin, keep the 32.768 kHz crystal traces short and guarded, and follow Microchip's TrustZone implementation guide to partition secure vs non-secure code regions. The 32-VQFN exposed pad must be soldered to a continuous ground pour for thermal dissipation and electrical reference.

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ATSAML11E15A-MU - 32KB Flash Cortex-M23 MCU w/ TrustZone | Microchip
ATSAML11E15A-MU

ATSAML11E15A-MU - 32KB Flash Cortex-M23 MCU w/ TrustZone | Microchip

The Microchip Technology ATSAML11E15A-MU is a 32-bit ARM Cortex-M23 microcontroller featuring ARM TrustZone technology, 32 KB of Flash, 8 KB of SRAM, and a 32-pin VQFN (5x5 mm) package. It operates at a core frequency of 32 MHz and is engineered as the industry's lowest-power Cortex-M23 MCU with chip-level security. Active-mode current is less than 25 uA/MHz and sleep-mode current is less than 100 nA, making it ideal for battery-powered edge devices. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals such as timers, communication interfaces, and analog blocks. The Cortex-M23 is an ARMv8-M Baseline core that introduces TrustZone for ARMv8-M, the smallest and most energy-efficient implementation of hardware-isolated trusted execution. The SAM L11 family from Microchip sits inside the wider 32-bit MCU hierarchy (ARM Cortex-M -> 32-bit MCU -> microcontroller -> semiconductor), and it is positioned as Microchip's ultra-low-power secure MCU line for IoT endpoints. The ATSAML11E15A-MU integrates secure key storage, chip-level tamper resistance, hardware crypto accelerators (AES, SHA, TRNG), and an enhanced Peripheral Touch Controller (PTC) for capacitive touch and proximity sensing. Its 6 SERCOM (serial communication) interfaces can each be configured as UART, I2C, or SPI, giving designers flexibility to mix protocol needs. The device supports 1.62 V to 3.63 V supply voltage and an industrial operating temperature range of -40 C to +85 C. Typical applications include secure IoT sensor nodes, connected medical devices, smart-home controllers, low-power wireless endpoints (LoRa/BLE/Zigbee host MCUs), and touch-based human-machine interfaces. The combination of TrustZone isolation and <25 uA/MHz active power allows secure firmware updates and authenticated sensor telemetry on a coin-cell or Li-Ion battery for years. When designing with this part, allocate sufficient Flash for a TrustZone-aware linker script (Secure / Non-Secure split), and reserve one SERCOM for a debug UART or external memory. Bypass VDD with 100 nF and 4.7 uF ceramic capacitors placed within 3 mm of the supply pins. The QFN package requires a small thermal pad for ground reference and improved electrical performance. This page synthesizes distributor pricing as of 2026-09-22, Microchip same-family alternatives with shared QFN-32 footprints, drop-in replacement guidance, and PCB/design notes that are not duplicated on the manufacturer datasheet landing page.

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ATSAML11E15A-MUKPH - Cortex-M23 32KB MCU 32VQFN TrustZone | Microchip
ATSAML11E15A-MUKPH

ATSAML11E15A-MUKPH - Cortex-M23 32KB MCU 32VQFN TrustZone | Microchip

The Microchip ATSAML11E15A-MUKPH is an ultra-low-power 32-bit ARM Cortex-M23 microcontroller with 32KB Flash, 8KB SRAM, integrated TrustZone technology, and pre-provisioned Trustonic Root of Trust key (KPH variant), housed in a 32-pin VQFN (5x5 mm) package. It targets the industry's lowest-power secure MCU class, consuming less than 25 µA/MHz in active mode and less than 100 nA in sleep mode, with chip-level tamper resistance and secure key storage. A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals. The Cortex-M23 belongs to the ARM Cortex-M family of energy-efficient processors designed for embedded applications; ARM TrustZone for ARMv8-M adds hardware-isolated secure and non-secure execution domains. The L11 series sits within Microchip's SAM family of Cortex-M based microcontrollers and competes in the broader low-power MCU market alongside parts such as the STM32L0 and EFR32 families. Key features include a 32 MHz core, 1.62 V to 3.63 V operating voltage range, integrated 12-bit ADC, 10-bit DAC, SERCOM peripherals, and a hardware cryptographic accelerator supporting AES, SHA, and True Random Number Generator. The KPH (Key-Provisioned Hardware) variant ships pre-loaded with a Trustonic Root of Trust key, enabling immediate use with Kinibi-M SDK and Secure Thingz Secure Deploy architectures. Operating temperature range is -40 °C to +85 °C for the standard grade and -40 °C to +125 °C for the extended grade. The device is built around a single-cycle I/O capable Cortex-M23 core with a 4-stage pipeline and tightly coupled SRAM, achieving 1.27 DMIPS/MHz while retaining deterministic interrupt response. TrustZone-M hardware isolates secure firmware from the rich OS or application environment, and secure boot verifies signed firmware before execution. The part is supplied in a 32-pin VQFN package with an exposed thermal pad, 5 mm × 5 mm body, and 0.5 mm pitch for compact, reflow-solderable designs. Typical applications include IoT end nodes with secure cloud onboarding, smart locks and access control, sensor hubs requiring tamper detection, secure payment terminals, and asset-tracking devices that need authenticated firmware updates. The combination of sub-100 nA sleep current and TrustZone-M makes it well suited to battery-powered products that demand a hardware root of trust. When designing with this part, note that the KPH variant uses a different provisioning flow than the standard MU variant; firmware must call the Kinibi-M SDK to access the pre-provisioned key. The exposed pad must be soldered to a sufficient copper pour for thermal dissipation and electrical grounding; insufficient thermal pad solder can raise junction temperature by tens of degrees at full CPU load. This page synthesizes distributor pricing, drop-in same-package alternatives from the Microchip SAM L11 family, and practical design notes drawn from the manufacturer datasheet and reference designs.

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ATSAML11E15A-MUT - SAM L11 Cortex-M23 32KB TrustZone MCU
ATSAML11E15A-MUT

ATSAML11E15A-MUT - SAM L11 Cortex-M23 32KB TrustZone MCU

The Microchip Technology ATSAML11E15A-MUT is a 32-bit ARM Cortex-M23 microcontroller in the SAM L11 family, featuring integrated ARM TrustZone technology, 32KB of Flash, 8KB of SRAM, and a 32-pin VQFN (5x5 mm) package with an exposed thermal pad. It runs at up to 32 MHz, delivers <25 µA/MHz active current, and drops below 100 nA in sleep mode, making it Microchip's lowest-power Cortex-M23 device. The 'MUT' suffix denotes a Tape & Reel packaging variant qualified for industrial temperature range (-40 °C to +85 °C). A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals such as ADCs, timers, communication interfaces, and GPIO into one package. The Cortex-M23 sits at the entry level of the Arm Cortex-M family and adds TrustZone isolation, allowing secure and non-secure code to run on the same core with hardware-enforced separation. MCUs belong to the broader category of embedded processors, sitting below microprocessors (MPUs) in compute complexity but above simple 8-bit controllers in capability. The ATSAML11E15A-MUT differentiates itself with chip-level security features that are rare in this price range. It integrates secure key storage, hardware cryptographic accelerators, true random number generator (TRNG), secure boot, and chip-level tamper detection. Combined with TrustZone, this enables firmware IP protection, secure over-the-air (OTA) updates, and resistance to physical tampering attacks - features typically reserved for more expensive secure elements. From an architecture standpoint, the SAM L11 uses a single-cycle I/O bus for deterministic GPIO response and supports Microchip's Event System for inter-peripheral signalling without CPU intervention. Its peripheral set includes a 12-bit ADC, 10-bit DAC, multiple SERCOM (configurable serial communication) instances usable as UART/SPI/I2C, and a Real-Time Clock (RTC). The 32-VQFN package provides an exposed thermal pad (EP) that must be soldered to the PCB ground plane to meet thermal and electrical specifications. Typical applications include IoT sensor nodes, secure wearables, smart meters, medical consumables, anti-counterfeiting authentication tokens, and battery-powered industrial edge devices. Designers pick this part specifically when on-chip secure key storage and TrustZone isolation outweigh the need for larger memory. When designing the PCB, the exposed pad must be soldered to a grounded copper pour of at least 4 thermal vias to meet the rated thermal performance. The internal 32 kHz ultra-low-power oscillator can be used as the low-frequency clock source to further reduce sleep-mode current, but its startup time is several hundred milliseconds - factor this into latency-critical wake-up paths. This page synthesises distributor pricing, cross-reference data, and design considerations not found in a single manufacturer datasheet, enabling faster component selection and PCB bring-up.

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ATSAML11E15A-UUTKPH - 32KB Flash ARM Cortex-M23 MCU | Microchip
ATSAML11E15A-UUTKPH

ATSAML11E15A-UUTKPH - 32KB Flash ARM Cortex-M23 MCU | Microchip

The Microchip Technology ATSAML11E15A-UUTKPH is an ultra-low-power 32-bit ARM Cortex-M23 microcontroller with 32KB Flash and 8KB SRAM, operating up to 32 MHz, housed in a 32-pin WLCSP package. According to the Microchip product page, the SAM L11 family is the industry's first Cortex-M23 MCU featuring ARM TrustZone-M technology, consuming less than 25 µA/MHz in active mode and less than 100 nA in sleep mode. A microcontroller (MCU) is an integrated circuit that combines a processor core, memory, and programmable peripherals on a single chip. The SAM L11 belongs to the sub-category of ultra-low-power MCUs within the broader class of 32-bit ARM Cortex-M microcontrollers, which are widely used in battery-powered and energy-harvesting embedded applications where active current, sleep current, and security boundaries directly impact product lifetime and certification. Key features include secure key storage, chip-level tamper resistance, hardware cryptographic accelerators, a built-in PTC (Peripheral Touch Controller), multiple SERCOM serial interfaces, ADC, DAC, OPAMP, and AC peripherals. TrustZone-M enables isolation between secure and non-secure code regions, allowing IP protection, secure boot, and credential provisioning - differentiating the SAM L11 from general-purpose Cortex-M23 parts. The architecture integrates a Cortex-M23 core (Armv8-M Baseline) with single-cycle I/O access, an 8-channel event system, and a low-power 12-bit ADC. The security subsystem includes secure boot, secure debug, true random number generator (TRNG), AES-256, SHA-256, and ECC hardware accelerators, alongside Microchip's TrustZone-aware SecureBoot architecture. The 'KPH' suffix indicates key-provisioned factory provisioning with a customer-supplied root key for production-grade secure deployments. Typical applications include IoT end nodes, secure sensor hubs, smart utility metering, secure wearables, medical sensor patches, and tamper-resistant payment terminals. The TrustZone-M separation and factory-provisioned keys are particularly valuable for any device that handles credentials, performs attestation, or stores device identities in the field. When designing with the SAM L11, ensure that TrustZone regions are planned during code partitioning; mixing secure and non-secure peripherals requires careful linker and NVIC configuration. For battery life estimation, the dominant figure is the 100 nA retention sleep current rather than the active 25 µA/MHz figure. This page synthesizes distributor pricing, drop-in alternatives from the SAML11 family and Microchip's broader ultra-low-power portfolio, and practical TrustZone-M design notes not consolidated in the manufacturer datasheet.

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ATSAML11E16A-AFT - 32MHz Cortex-M23 MCU, TrustZone, 64KB Flash | Microchip
ATSAML11E16A-AFT

ATSAML11E16A-AFT - 32MHz Cortex-M23 MCU, TrustZone, 64KB Flash | Microchip

The Microchip ATSAML11E16A-AFT is an ultra-low-power ARM Cortex-M23 microcontroller featuring ARM TrustZone-M security extensions, 64 KB of Flash, and 16 KB of SRAM in a 32-pin TQFP (7x7 mm) package. According to the Microchip product page, it operates at up to 32 MHz, consumes less than 25 uA/MHz in active mode, and drops below 100 nA in sleep mode, making it one of the lowest-power Cortex-M23 devices available. It is AEC-Q100 qualified for automotive applications. An ARM Cortex-M23 MCU is a 32-bit microcontroller core built on the ARMv8-M Baseline architecture. The M23 instruction set includes only Thumb-2 and a small subset of integer DSP extensions, which keeps the core area small (about 12K gates) and its active power per MHz very low. When paired with TrustZone-M, the device splits memory and peripherals into Secure and Non-Secure worlds so firmware can isolate sensitive keys, crypto operations, and OTA update paths from the main application code, a capability previously reserved for Cortex-M33 or higher tiers. Key features of the ATSAML11E16A-AFT include 64 KB Flash with secure key storage, 16 KB SRAM, 12-bit ADC, 10-bit DAC, two analog comparators, one op-amp, multiple SERCOM serial interfaces (configurable as UART, SPI, I2C), a PTC (Peripheral Touch Controller), and a Crypto accelerator supporting AES, SHA, and TRNG. The device also includes chip-level tamper resistance and secure boot. The 32-pin TQFP package (7x7 mm) balances low-cost PCB assembly with sufficient I/O for sensor hubs and human-machine interface nodes. The SAM L11 architecture combines an ultra-low-power picoPower cache, multiple sleep modes, and event system wake-up without CPU intervention. This makes it suitable for battery-powered applications where the MCU spends most of its time in deep sleep but must wake quickly to service a sensor interrupt. Typical applications include IoT end nodes with secure OTA firmware updates, smart-metering modules, secure authentication peripherals, automotive body electronics (AEC-Q100), medical wearables, and secure payment terminals. The TrustZone-M isolation plus hardware crypto engine enables compliance with PSA Certified Level 1 and emerging IoT security regulations. When designing with this device, allocate the secure boot region and TrustZone Attribution Unit carefully: misconfigured SAU regions can lock out the debugger. Use the Microchip MPLAB X IDE or MPLAB Harmony 3 framework and program/debug via SWD with a J-Link, MPLAB ICD 4, or Curiosity Nano board. This page combines distributor pricing snapshots, drop-in pin-compatible alternatives, and practical TrustZone-M design notes that are not duplicated on the manufacturer product page, providing genuine engineering value beyond the datasheet PDF.

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ATSAML11E16A-AFTKPH - Cortex-M23 32MHz 64KB MCU | Microchip
ATSAML11E16A-AFTKPH

ATSAML11E16A-AFTKPH - Cortex-M23 32MHz 64KB MCU | Microchip

The Microchip ATSAML11E16A-AFTKPH is an ultra-low-power 32-bit ARM Cortex-M23 microcontroller featuring ARM TrustZone technology, secure key storage, and chip-level tamper resistance. It operates at up to 32 MHz, integrates 64 KB of Flash and 16 KB of SRAM, and is housed in a 32-pin TQFP package (7x7 mm). The device targets secure connected and battery-powered applications that require hardware-isolated execution. 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.

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ATSAML11E16A-AU - 32MHz Cortex-M23 64KB MCU | Microchip
ATSAML11E16A-AU

ATSAML11E16A-AU - 32MHz Cortex-M23 64KB MCU | Microchip

The Microchip ATSAML11E16A-AU is an ultra-low-power 32-bit ARM Cortex-M23 microcontroller with TrustZone-M security, 64KB Flash, 16KB SRAM, and integrated crypto accelerators, packaged in a 32-pin TQFP (7x7 mm) and rated for -40C to +85C operation. It runs at up to 32 MHz with 2.62 CoreMark/MHz efficiency and achieves less than 25 uA/MHz active consumption while consuming less than 100 nA in sleep mode, making it the lowest-power Cortex-M23 in the industry. The on-chip crypto block, secure key storage, and chip-level tamper resistance make this MCU the entry point for IoT endpoints that must defend firmware and identity against physical and remote attacks. An ARM Cortex-M23 microcontroller is a 32-bit processor core built on the ARMv8-M baseline architecture, optimized for energy-efficient embedded applications. It sits below the Cortex-M3 in performance but adds optional TrustZone-M for hardware-isolated secure firmware regions. The SAM L11 family from Microchip is the first commercial Cortex-M23 implementation to integrate TrustZone-M, secure boot, and a hardware AES/SHA crypto accelerator on die. Within the broader taxonomy, the part belongs to microcontrollers -> 32-bit MCUs -> ARM Cortex-M -> Cortex-M23 -> low-power secure MCUs -> power management hierarchy. Key differentiating specifications include the TrustZone-M isolation engine, on-die crypto accelerators (AES, SHA, TRNG), 64 KB Flash with secure storage partitioning, 16 KB SRAM, six SERCOM interfaces configurable as UART/SPI/I2C, a 12-bit ADC, 10-bit DAC, analog comparator, and PTC (Peripheral Touch Controller) for capacitive touch sensing. The part also includes a Self-Programmable Flash with read-while-write support and a 32 kHz RTC with calendar mode. Technically, the SAM L11 uses a single-cycle hardware multiplier and hardware divider for deterministic interrupt latency. The Cortex-M23 core delivers up to 31 DMIPS at 32 MHz. Sleep current below 100 nA is achieved via three power domains (PD0/PD1/PD2) and a backup domain with RTC. The 1.62V to 3.63V operating range supports direct Li-ion and 3.3V regulated rails. Typical applications include IoT sensor nodes, secure wearables, smart metering, medical sensor patches, building automation endpoints, and battery-powered HMI with capacitive touch. The 85C ceiling suits indoor industrial enclosures, consumer appliances, and commercial IoT gateways. When designing with the ATSAML11E16A-AU, ensure the secure key storage region is provisioned during initial flash programming and that the NRST line has the required 10 kohm pull-up. TrustZone-M secure/non-secure partitioning must be configured before user code execution; tools like MPLAB Harmony v3 and Atmel Studio 7 simplify this. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet summary, including same-package pin-to-pin MCU replacements drawn from the Microchip SAM L11 family.

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ATSAML11E16A-AUTKPH - 32MHz Cortex-M23 MCU, TrustZone | Microchip
ATSAML11E16A-AUTKPH

ATSAML11E16A-AUTKPH - 32MHz Cortex-M23 MCU, TrustZone | Microchip

The Microchip Technology ATSAML11E16A-AUTKPH is a 32-bit ARM Cortex-M23 microcontroller with TrustZone-M security and integrated crypto hardware, packaged in a 32-pin TQFP (7x7 mm) with key provisioning pre-loaded. It delivers 64KB Flash and 16KB SRAM at a 32 MHz core clock and is part of the SAM L11 family — billed by Microchip as the industry's first and lowest-power Cortex-M23 MCU with chip-level security. 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.

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ATSAML11E16A-MF - 32MHz Cortex-M23 MCU 64KB Flash | Microchip
ATSAML11E16A-MF

ATSAML11E16A-MF - 32MHz Cortex-M23 MCU 64KB Flash | Microchip

The Microchip Technology ATSAML11E16A-MF is a 32-bit ARM Cortex-M23 microcontroller from the SAM L11 family, integrating 64KB Flash, 16KB SRAM, and ARM TrustZone technology with chip-level security in a 32-pin VQFN (5x5) package. Operating up to 32 MHz from a 1.62V to 3.63V supply, it draws less than 25 uA/MHz in active mode and less than 100 nA in sleep mode. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable peripherals. The Cortex-M23 is an ARMv8-M baseline core optimized for energy-efficient embedded applications. Positioned in the SAM L11 lineup between simpler Cortex-M0+ devices and higher-performance Cortex-M4 parts, the ATSAML11E16A-MF emphasizes deterministic execution, low power, and hardware-rooted security, making it suitable for IoT endpoints, secure sensors, and battery-powered medical devices. Key features include a 64KB Flash program memory (64K x 8 organization), 16KB SRAM, TrustZone for ARMv8-M with secure/non-secure partitioning, a True Random Number Generator (TRNG), secure key storage, chip-level tamper resistance, and a rich peripheral set including ADC, SERCOM, timers, and an on-chip temperature sensor. The AEC-Q100 qualification makes it suitable for automotive body and chassis applications. The integrated Power-on Reset (POR), brown-out detector, and 12-bit 1Msps ADC simplify BOM while supporting sensor fusion and analog monitoring tasks. Architecturally, the SAM L11 uses a single-cycle I/O bus and a low-latency interrupt controller (NVIC) to deliver deterministic response. Hardware cryptographic accelerators for AES and SHA offload secure boot and TLS operations from the CPU, while TrustZone isolates firmware IP from third-party application code. Typical applications include secure IoT sensor nodes, smart metering, wireless connectivity co-processors (LoRa, BLE, sub-GHz), wearable health monitors, automotive body controllers, and HMI touch interfaces. Compared with the SAML10 family, the SAML11 adds TrustZone, more SRAM, and dedicated crypto primitives; versus Cortex-M0+ MCUs it provides higher MIPS per MHz with deterministic interrupt handling. When designing with this part, ensure the VQFN-5x5 thermal pad is soldered to a sufficient copper pour for heat dissipation, and follow Microchip application note TB3196 for TrustZone partition configuration. Decoupling: place 100 nF X7R on each VDD pin and a 4.7 uF bulk capacitor within 10 mm of the IC. This page synthesizes distributor pricing, AEC-Q100-qualified drop-in alternatives, and practical TrustZone configuration guidance not consolidated in the manufacturer datasheet.

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ATSAML11E16A-MFKPH - 32MHz ARM Cortex-M23 MCU | Microchip
ATSAML11E16A-MFKPH

ATSAML11E16A-MFKPH - 32MHz ARM Cortex-M23 MCU | Microchip

The Microchip Technology ATSAML11E16A-MFKPH is a 32-bit ARM Cortex-M23 microcontroller with chip-level security and ARM TrustZone technology, operating up to 32 MHz with 64 KB Flash and 16 KB SRAM in a 32-pin VQFN (5x5) package. It is part of the SAM L11 family, Microchip's lowest-power Cortex-M23 MCU family, consuming less than 25 uA/MHz in active mode and less than 100 nA in sleep mode, making it suitable for battery-operated edge devices. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data memory, and peripherals. The SAM L11 is a 32-bit ARM Cortex-M23 MCU, an Armv8-M baseline core optimized for energy efficiency and deterministic interrupt response, sitting in the hierarchy MCU -> microcontroller -> embedded processor -> semiconductor IC. The ATSAML11E16A-MFKPH variant specifically integrates TrustZone for ARMv8-M, secure boot, secure key storage, and chip-level tamper resistance, providing hardware-isolated secure and non-secure code regions. Key features include 64 KB Flash, 16 KB SRAM, ARM Cortex-M23 core with single-cycle hardware multiply, a 32 MHz maximum CPU clock, and integrated peripherals such as SERCOM (configurable serial communication), ADC, DAC, timers, and RTC. Security features include TrustZone-M, secure boot with root-of-trust, hardware cryptographic accelerators (AES, SHA, TRNG), secure key storage in flash, and tamper detection pins. The part is specified for an industrial temperature range of -40C to +125C. Architecturally, the SAM L11 combines the Cortex-M23 core with a Microchip peripheral set and an enhanced Power Management Unit (PMU) supporting multiple low-power sleep modes. The 32-VQFN (5x5 mm) package has an exposed pad that must be soldered to the ground plane for thermal dissipation and electrical performance. TrustZone isolation runs at the bus and memory level, ensuring that secure peripherals cannot be accessed from non-secure firmware without explicit gateway calls. Typical applications include IoT sensor nodes, secure connected home devices, smart metering, medical wearables requiring authenticated firmware, secure access control, and industrial HMI edge nodes. The wide operating temperature range and the 32-VQFN footprint also suit compact industrial modules with cryptographic requirements. Design considerations include mandatory decoupling near VDD pins, exposing the e-pad to a continuous ground copper pour for thermal relief, and configuring TrustZone attribution in the linker script before provisioning the secure key store. The -MFKPH suffix indicates the part is factory-key-provisioned and supplied in tray packaging. This page synthesizes distributor pricing, factory-provisioned key variants, drop-in package alternatives, and practical TrustZone design notes not found in the manufacturer datasheet alone.

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ATSAML11E16A-MFTKPH - 32-bit Cortex-M23 MCU 64KB Flash | Microchip
ATSAML11E16A-MFTKPH

ATSAML11E16A-MFTKPH - 32-bit Cortex-M23 MCU 64KB Flash | Microchip

The Microchip Technology ATSAML11E16A-MFTKPH is an ultra-low-power 32-bit ARM Cortex-M23 microcontroller with 64KB Flash and ARM TrustZone technology, housed in a 32-pin VQFN (5x5 mm) package. It operates at up to 32 MHz, consumes less than 25 uA/MHz in active mode, and drops below 100 nA in sleep mode, making it the industry's first and lowest-power Cortex-M23 MCU with chip-level security. The KPH suffix denotes a specific tape-and-reel packaging variant for high-volume manufacturing. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and peripherals. The Cortex-M23 is an ARMv8-M Baseline processor designed for energy-efficient embedded applications, featuring TrustZone for hardware-isolated secure and non-secure code execution. In the broader taxonomy, the ATSAML11E16A fits under 32-bit MCU -> ARM Cortex-M -> secure low-power MCU -> IoT edge controller, serving as the central processing element in battery-powered and security-conscious designs. Key features of the ATSAML11E16A-MFTKPH include 64KB Flash, 8KB SRAM, ARM TrustZone-M, secure key storage, chip-level tamper resistance, enhanced Peripheral Touch Controller (PTC) for capacitive touch interfaces, and a wide operating voltage range from 1.62V to 3.63V supporting both 1.5V and 3.3V system rails. The device integrates multiple low-power modes, a 12-bit ADC, SERCOM serial communication peripherals, and crypto accelerators for secure boot and authenticated firmware updates. Technically, the ATSAML11E16A uses a single-cycle hardware multiplier, an M-profile Vector Table Offset Register for interrupt handling, and a low-power RTC with calendar mode. TrustZone-M partitions Flash and SRAM into secure and non-secure regions, enforced by hardware, which prevents non-secure code from reading secure memory. The enhanced PTC supports up to 256 channels of mutual-capacitance or self-capacitance touch sensing, enabling waterproof touch buttons and proximity wake-up from deep sleep. Typical applications include IoT end nodes, secure sensor hubs, smart locks, wearable health monitors, capacitive touch user interfaces, and battery-powered industrial sensors. The combination of TrustZone, secure key storage, and tamper detection makes this MCU particularly suitable for products that must resist physical and firmware-level attacks while running for years on a single coin cell. Designers should plan for an external 32.768 kHz crystal to enable accurate RTC timing in backup mode, and ensure the secure boot configuration bits are locked before deployment. The 5x5 mm VQFN package requires thermal relief vias under the exposed pad to meet the datasheet's thermal resistance specification. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes that go beyond the manufacturer datasheet to help engineers select, source, and integrate the ATSAML11E16A-MFTKPH efficiently.

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ATSAML11E16A-MU - ARM Cortex-M23 32MHz 64KB Flash MCU | Microchip
ATSAML11E16A-MU

ATSAML11E16A-MU - ARM Cortex-M23 32MHz 64KB Flash MCU | Microchip

The Microchip Technology ATSAML11E16A-MU is a 32-bit ARM Cortex-M23 microcontroller running at up to 32 MHz, integrating 64 KB of embedded Flash and 16 KB of SRAM in a 32-pin VQFN (5x5 mm) package with TrustZone-M security. According to the Microchip product page, it consumes less than 25 uA/MHz in active mode and less than 100 nA in sleep mode, making it the industry's lowest-power Cortex-M23 MCU with chip-level tamper resistance and ARM TrustZone technology. The device is part of the SAM L11 family, which is the first Cortex-M23 implementation to add hardware-enforced secure and non-secure code partitioning. 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.

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ATSAML11E16A-MUKPH - Cortex-M23 MCU, TrustZone, 64KB Flash | Microchip
ATSAML11E16A-MUKPH

ATSAML11E16A-MUKPH - Cortex-M23 MCU, TrustZone, 64KB Flash | Microchip

The Microchip Technology ATSAML11E16A-MUKPH is an ultra-low-power 32-bit ARM Cortex-M23 microcontroller running at up to 32 MHz with 64 KB of Flash, 16 KB of SRAM, and 2 KB of EEPROM, housed in a 32-pin VQFN (5x5 mm) package with exposed pad. As a member of the SAM L11 family, it integrates ARM TrustZone-M technology for hardware-isolated secure and non-secure code execution, a Crypto Accelerator supporting AES, SHA, and True Random Number Generation, and secure key storage. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), peripherals, and I/O into one package. The Cortex-M23 specifically is an ARMv8-M Baseline architecture core designed for energy-efficient deterministic embedded computing. Within the broader taxonomy, this device sits inside the Microcontroller > ARM Cortex-M > Cortex-M23 subfamily > ultra-low-power secure MCU product tree. TrustZone-M is the smallest Cortex-M variant that supports hardware-enforced security partitioning, making it suitable for IoT edge devices that must protect keys and firmware from physical and remote attacks. Key features include active-mode current below 25 uA/MHz, sleep-mode current below 100 nA with full SRAM retention, a 12-bit 1 Msps ADC, a 10-bit DAC, two analog comparators, one operational amplifier, a Peripheral Touch Controller (PTC) supporting capacitive touch, and up to six SERCOM serial interfaces configurable as I2C, SPI, or USART/UART. The device also offers LINbus support, a 16-bit timer/counter array, and Real-Time Clock with calendar. Operating voltage spans 1.62 V to 3.63 V across the -40 C to +85 C industrial temperature range. The SAM L11 architecture implements secure boot, secure firmware update, secure debug, and anti-tamper detection, with key provisioning baked into the part number suffix. The TrustZone Security Attribution Unit (SAU) and Implementation Defined Attribution Unit (IDAU) partition flash, RAM, and peripherals into secure/non-secure regions. The Cortex-M23 core includes a single-cycle hardware multiplier and a hardware divider, deterministic interrupt latency with NVIC, and WFI/WFE sleep modes. Typical applications include IoT end nodes with secure firmware update, smart meters and utility metering, access control and authentication tokens, secure wireless sensor nodes, medical wearables requiring FDA-grade data protection, and industrial control modules needing cryptographic identity. The 32-pin VQFN footprint suits space-constrained PCB designs, while the integrated PTC eliminates external touch controllers, reducing BOM cost by 15 to 30 percent. When designing with this device, allocate the TrustZone linker regions early in the project because secure pin/peripheral assignment cannot be undone without re-flashing the chip's NVM bits. Decouple VDDIO and VDDANA separately per the SAM L10/L11 family datasheet, and follow the Microchip ASF/MPLAB Harmony start-up sequence to avoid NVMCTRL lock-up. The -MUKPH suffix indicates tray packing with secure key provisioning at the factory. This page synthesizes distributor stock, drop-in alternatives from the SAM L10/L11 family and competing 32-pin VQFN Cortex-M23 MCUs, and practical secure-MCU design notes not found in the manufacturer datasheet alone.

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ATSAML11E16A-MUT - Cortex-M23 32MHz 64KB Flash MCU | Microchip
ATSAML11E16A-MUT

ATSAML11E16A-MUT - Cortex-M23 32MHz 64KB Flash MCU | Microchip

The Microchip Technology ATSAML11E16A-MUT is a 32-bit ARM Cortex-M23 based microcontroller from the SAM L11 family, operating at up to 32 MHz with 64 KB of Flash and 16 KB of SRAM, housed in a 32-pin VQFN (5x5 mm) package with an exposed thermal pad. It operates from a 1.62 V to 3.63 V supply, draws less than 25 uA/MHz in active mode and less than 100 nA in sleep mode, and is the industry's first Cortex-M23 MCU with chip-level security and ARM TrustZone technology. The device integrates secure key storage, chip-level tamper resistance, and a hardware cryptographic accelerator supporting AES, SHA, and True Random Number Generator (TRNG) functions. The 'E16A' suffix denotes the 64 KB Flash / 16 KB SRAM variant, and the 'MUT' suffix indicates 32-VQFN package, -40C to +85C industrial temperature, and Tape & Reel packaging. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash for code, SRAM for data), and a rich set of peripherals (timers, ADC, communication interfaces, GPIO) on one die. MCUs belong to the broader family of embedded processors and dominate low-power, real-time control applications. The Cortex-M23 is Arm's smallest and most energy-efficient TrustZone-capable core, positioned between the Cortex-M0+ (no TrustZone) and the Cortex-M33 (with DSP and FPU), making the SAM L11 ideal for secure, low-power IoT endpoints. The 'SAM' family hypernym chain: SAM L11 -> Cortex-M23 MCU -> ARM-based microcontroller -> embedded processor -> semiconductor IC. Key differentiating features include ARM TrustZone for hardware-enforced isolation between secure and non-secure code, a Secure Boot Loader, a hardware Crypto Accelerator (AES-128/256, SHA-256, TRNG), up to 51 GPIO, a 12-bit 1 MSPS ADC, and a 10-bit 350 kSPS DAC. The 32-VQFN package has a thermal resistance of approximately 30 C/W, and the device supports Sleep, Standby, and Backup modes with fast wake-up times below 2 us from Sleep. It is qualified to industrial temperature grade (-40C to +85C) and is RoHS compliant. Typical applications include secure IoT sensor nodes, smart meters, wearable health monitors, secure authentication peripherals, home automation hubs, and battery-powered edge AI inference devices. The TrustZone and crypto accelerator make it especially suited for products requiring end-to-end secure firmware update (SUOTA) and tamper-resistant credential storage. When designing with this MCU, allocate at least one decoupling capacitor (100 nF) per VDD pin and place the exposed pad (EP) to a large ground copper pour for thermal dissipation. For secure applications, configure the TrustZone Attribute Unit (TAU) during boot to lock peripheral and memory access rights, and use the Boot ROM Secure Boot Loader to verify application firmware signatures before execution. Programming is supported by Microchip Studio, MPLAB X IDE, and Atmel START.

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ATSAML11E16A-UUTKPH - 32MHz Cortex-M23 TrustZone MCU | Microchip
ATSAML11E16A-UUTKPH

ATSAML11E16A-UUTKPH - 32MHz Cortex-M23 TrustZone MCU | Microchip

The Microchip ATSAML11E16A-UUTKPH is an ultra-low-power 32-bit ARM Cortex-M23 microcontroller with TrustZone-M security, 64KB Flash and 16KB SRAM, housed in a 32-pin WLCSP package. It integrates ARM TrustZone technology, secure key storage, chip-level tamper resistance, and a peripheral touch controller (PTC), drawing less than 25 uA/MHz in active mode and less than 100 nA in sleep mode. What is a low-power microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash and SRAM), and peripherals on one die. Ultra-low-power MCUs target battery-operated endpoints such as IoT sensors, wearables, and smart meters, where power budget measured in microamps determines battery life. The SAM L11 family sits in the broader hierarchy: MCU -> ARM Cortex-M microcontroller -> low-power secure MCU -> IoT edge controller -> semiconductor. Key features include a 32 MHz Cortex-M23 core with single-cycle I/O access, TrustZone-M for hardware-isolated secure firmware execution, on-chip cryptographic accelerators (AES, SHA, TRNG), and a 12-bit 1 MSPS ADC, 10-bit DAC, and analog comparators. The Enhanced Peripheral Touch Controller supports up to 256 buttons, while SERCOM modules provide configurable UART, SPI, and I2C interfaces. Sleep-mode current under 100 nA enables multi-year coin-cell operation. The SAM L11 architecture pairs a Cortex-M23 core with TrustZone-M for hardware-enforced separation between secure and non-secure code. Secure boot, secure key storage in on-chip flash, and tamper detection (voltage, temperature, frequency, and active mesh) deliver chip-level security that traditionally required external secure elements. The on-chip DC-DC converter and Smart Sleep modes minimize active and idle energy, while the Event System allows peripherals to communicate without CPU wake-up. Typical applications include IoT sensor nodes, secure medical wearables, smart-home and building automation endpoints, secure payment terminals, and battery-powered touch-interface products. The TrustZone capability targets devices requiring secure firmware update, secure boot, and protected key storage, while the PTC supports capacitive touch keypads and sliders in low-power HMI designs. When designing with this device, allocate pin function priorities early because the WLCSP-32 pinout shares SERCOM, I/O, and PTC lines; reserve one SERCOM channel for debug and another for the host UART. The chip-level tamper pins require board-level shield routing and dedicated capacitors to meet the Microchip reference design guideline. This page synthesizes distributor pricing, drop-in alternative listings, and practical design notes not found in the standalone Microchip SAM L10/L11 datasheet, helping engineers compare variants and select the right package and temperature grade for IoT, medical, and industrial applications.

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ATSAML21E15B-ANT - 32KB Flash Cortex-M0+ MCU | Microchip | 32-TQFP
ATSAML21E15B-ANT

ATSAML21E15B-ANT - 32KB Flash Cortex-M0+ MCU | Microchip | 32-TQFP

The Microchip Technology ATSAML21E15B-ANT is an ultra-low-power 32-bit ARM Cortex-M0+ Flash microcontroller in the SAM L21E family, housed in a 32-pin TQFP (7x7 mm) package. Key headline parameters are 48 MHz core clock, 32 KB Flash, 4 KB SRAM, and a 1.6 V to 3.6 V supply range with active current under 35 µA/MHz and Sleep-mode current as low as 200 nA. The -ANT suffix denotes the industrial 85°C/105°C TQFP-32 tape-and-reel variant of the B-revision silicon. What is an ultra-low-power Cortex-M0+ MCU? A microcontroller is a single-chip computer integrating a CPU core, memory, and peripherals; ARM Cortex-M0+ is the most energy-efficient ARM core for embedded designs, optimized for deterministic interrupt response and minimal gate count. The ATSAML21 family belongs to the broader category of low-power microcontrollers, which sit hierarchically between 8-bit MCUs (e.g., PIC16) and application processors (e.g., Cortex-A). It targets battery-powered and energy-harvesting applications where Sleep current dominates total energy consumption. Key features of the ATSAML21E15B-ANT include the Cortex-M0+ core with single-cycle I/O access, an on-chip full-speed USB 2.0 device, a 12-bit ADC, multiple SERCOM serial interfaces, and a Peripheral Touch Controller (PTC) supporting capacitive touch. The integrated Event System and SleepWalking peripherals allow peripherals to wake the CPU autonomously, eliminating the need to keep the core active for peripheral servicing. B-revision silicon adds enhanced functional-safety documentation per IEC 60730 Class B. The device uses a sophisticated power-management architecture with multiple Sleep modes (Idle, Standby, Backup, and Off) and an integrated buck-converter option on the L21 line. The Memory Protection Unit and TrustZone-M alternative support lightweight embedded security. The 32 KB Flash with 4 KB SRAM provides a balanced code-and-data budget for typical IoT nodes, sensor hubs, and Human-Machine Interface (HMI) firmware. Typical applications include wearable fitness bands, wireless sensor nodes, smart-home sensor hubs, low-power IoT edge devices, and battery-powered HMI panels with capacitive touch. The 48 MHz performance and 1.6 V minimum supply also suit coin-cell applications such as electronic shelf labels, remote controls, and medical patches where quiescent current is mission-critical. When designing with this MCU, prioritize Sleep-mode current in the energy budget - datasheet figures of 200 nA in Standby Sleep mode assume the PTC and ADC are configured with disabled bias and the on-chip voltage regulator in low-power mode. Pair the device with a low-quiescent LDO (such as the MCP1700) when using 3.6 V batteries to avoid regulator Iq overwhelming the MCU's own Sleep current. This page synthesizes distributor stock, parametric alternatives, and practical low-power design notes not consolidated on the manufacturer product page. Pricing reflects current 2026 distributor tier breaks.

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ATSAML21E15B-AUT - 32KB Flash Cortex-M0+ MCU | Microchip
ATSAML21E15B-AUT

ATSAML21E15B-AUT - 32KB Flash Cortex-M0+ MCU | Microchip

The Microchip ATSAML21E15B-AUT is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller from the SAM L21 family, featuring 32KB of Flash, 4KB of SRAM, and a 48 MHz maximum CPU clock speed, housed in a 32-pin TQFP (7x7 mm) package. It targets battery-powered and energy-harvesting applications where both active-mode efficiency (under 35 µA/MHz) and deep-sleep current (200 nA in Sleep mode) are critical design constraints. The integrated Cortex-M0+ core delivers deterministic performance with Thumb-2 instruction set support, while the on-chip peripherals include SERCOM (configurable serial communication), 12-bit ADC, DAC, and op-amps. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, volatile and non-volatile memory, and programmable I/O peripherals. The ARM Cortex-M0+ is an ultra-low-power 32-bit core optimized for embedded systems, widely used in IoT endpoints, wearable electronics, and sensor hubs. Within the SAM L21 family hierarchy, ATSAML21E15B sits between lower-pin-count SAM L10 devices and higher-memory SAM L21G/J variants, balancing I/O count (32-pin TQFP) with low-power features. Key features of the ATSAML21E15B-AUT include a 12-channel 12-bit ADC with up to 1 MSPS sampling, configurable SERCOM modules that operate as UART, SPI, or I2C, an on-chip temperature sensor, and full-speed USB device support. The integrated Power Management Unit (PMU) enables multiple SleepWalking standby modes that allow peripherals to wake the CPU only on relevant events. The device operates from a 1.62V to 3.63V supply, supporting direct connection to single-cell Li-ion or two AA cells. Typical applications include wearable fitness trackers, IoT sensor nodes, low-power wireless modules, smart thermostats, and battery-powered industrial sensors. The combination of Cortex-M0+ processing power and sub-microamp Sleep current makes this MCU ideal for designs where battery life spans years rather than weeks. Engineers should leverage the Peripheral Touch Controller and Event System to minimize CPU wake-up events and maximize energy efficiency.

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ATSAML21E15B-MNT - 32KB Flash Cortex-M0+ MCU 32-VQFN | Microchip
ATSAML21E15B-MNT

ATSAML21E15B-MNT - 32KB Flash Cortex-M0+ MCU 32-VQFN | Microchip

The Microchip Technology ATSAML21E15B-MNT is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller from the SAM L21E family, featuring 32KB of Flash and 4KB of SRAM, operating at up to 48 MHz, and housed in a 32-pin VQFN (5x5 mm) package. It integrates sophisticated power management that consumes under 35 µA/MHz in active mode and drops to 200 nA in Sleep mode, targeting battery-powered IoT endpoints, wearables, and energy-harvesting designs. An ARM Cortex-M0+ microcontroller is a 32-bit RISC processor core designed for energy-efficient embedded applications. The Cortex-M0+ sits within the broader hierarchy: Cortex-M0+ -> ARM Cortex-M family -> 32-bit MCU -> embedded microcontroller -> semiconductor. The SAM L21E family extends this with Microchip's proprietary picoPower technology, multiple low-power operating modes, and an integrated Peripheral Touch Controller (PTC) for capacitive touch sensing, enabling human-machine interfaces without external components. Key differentiating features include 12-bit ADC and 12-bit DAC, full-speed USB 2.0 device support, SERCOM (serial communication) interfaces configurable as UART/SPI/I2C, a Real-Time Clock (RTC) with calendar, and 24 wake-up sources via the Event System. Functional Safety (FuSa) variants (suffix A) include enhanced diagnostics for IEC 60730 Class B compliance, making the family suitable for white goods and safety-critical applications. The wide 1.6V to 3.6V operating range supports single-cell Li-ion, two-AA, and coin-cell battery topologies. Typical applications include battery-powered IoT sensor nodes, wearable health monitors, smart home wireless endpoints (BLE/Zigbee co-processor hosts), capacitive touch user interfaces, and industrial sensor transmitters. The combination of sub-µA sleep current and fast wake-up (1.5 µs typical from standby) makes it ideal for duty-cycled edge devices where total energy budget dominates battery life calculations. When designing with the SAM L21E, select the appropriate sleep mode (Idle, Standby, Backup) based on required peripheral availability - Standby preserves RTC and 1.5 µA wake-up, while Backup drops to ~200 nA but loses RAM retention. Always place a 1 µF + 100 nF decoupling pair within 3 mm of the VDD pins, and use the brown-out detector (BOD33) at 2.78V minimum for reliable 3.3V operation. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical low-power design notes not found in the standalone manufacturer datasheet.

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