ATSAML10E15A-AF - 32KB Flash Cortex-M23 MCU 32MHz | Microchip
MPN: ATSAML10E15A-AF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.85 | $185.00 |
| 500 | $1.62 | $810.00 |
| 1,000 | $1.38 | $1,380.00 |
| 2,500 | $1.15 | $2,875.00 |
ATSAML10E15A-AF Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash for program code and SRAM for runtime data), peripherals, and I/O. ARM Cortex-M23 cores target ultra-low-power embedded applications with the Armv8-M Baseline architecture, supporting only the Thumb-2 instruction set. The ATSAML10E15A-AF sits in the hierarchy: ARM Cortex-M23 -> Cortex-M family -> ARMv8-M -> 32-bit MCU -> microcontroller -> semiconductor -> integrated circuit.
Key features include a built-in Peripheral Touch Controller (PTC) supporting capacitive touch buttons, sliders, and proximity sensing without external components. It integrates advanced analog peripherals (12-bit ADC, 10-bit DAC, comparators), an ISO7816 smart-card interface, an event system for CPU-independent peripheral-to-peripheral signaling, and multiple serial interfaces (SERCOM configurable as UART/SPI/I2C). The wide 1.62V to 3.63V operating range and brown-out detection enable robust operation from coin-cell or 3.3V regulated supplies.
Internally, the ATSAML10E15A-AF uses a 32MHz Cortex-M23 core with single-cycle multiplier, hardware divide, and a Nested Vectored Interrupt Controller (NVIC). The on-chip voltage regulator with power-gating domains and SleepWalking peripherals lets selected peripherals wake the CPU only on actual events, holding overall system current near standby levels. The device ships with a factory-trimmed internal 32kHz oscillator and supports an external crystal up to 32MHz.
Typical applications include IoT sensor nodes, wearable fitness bands, smart remote controls, capacitive-touch user interfaces, smart-card and RFID readers (ISO7816), medical point-of-care devices, and industrial HMI panels where battery life and touch input are both critical.
When designing with this MCU, plan your pin-out carefully: 32-pin TQFP exposes only a subset of the SERCOM and PTC channels, so touch sensors and serial buses may share physical pins. Always consult the SAM L10/L11 family datasheet for peripheral multiplexing before committing the PCB layout.
This page synthesizes distributor pricing from 11+ sources, drop-in alternatives from the SAM L10 family, and practical design notes that complement the manufacturer datasheet with engineering context.
Drop-in alternatives for ATSAML10E15A-AF — 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 ATSAML10E15A-AF (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Core, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAML10E16A-AF
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAML10E15A-AU
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →ATSAML10D15A-MF
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →ATSAML10D15A-YFT
✅ Drop-In✓ In Stock
$2.1 / Unit
View Datasheet →ATSAML10D16A-MFT
✅ Drop-In✓ In Stock
$1.7 / Unit
View Datasheet →ATSAML11E15A-AF
✅ Drop-In✓ In Stock
$2.34 / Unit
View Datasheet →ATSAML10E15A-AF Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM Cortex-M23 (Armv8-M Baseline) |
| Bit Width | 32-bit |
| Max CPU Clock | 32 MHz |
| Program Flash | 32 KB (32K x 8) |
| SRAM | 8 KB |
| Operating Voltage | 1.62 V to 3.63 V |
| Active Current | < 25 uA/MHz |
| Sleep Current | < 100 nA |
| Operating Temperature | -40C to +125C |
| Package | 32-TQFP (7x7 mm) |
| Mounting Type | Surface Mount |
| Peripheral Touch Controller | Yes (built-in PTC) |
| ADC | 12-bit (count per family datasheet) |
| DAC | 10-bit |
| ISO7816 Interface | Yes |
| SERCOM Channels | Configurable UART/SPI/I2C |
| RoHS Status | Compliant (Green) |
| Supply Form | Tray |
ATSAML10E15A-AF Pin Configuration
| Pin 1 | PA00 — GPIO / SERCOM1[0] / ADC[0] |
| Pin 2 | PA01 — GPIO / SERCOM1[1] / ADC[1] |
| Pin 3 | PA02 — GPIO / SERCOM0[0] |
| Pin 4 | PA03 — GPIO / SERCOM0[1] / ADC[3] |
| Pin 5 | GND — Ground |
| Pin 6 | VDD — Supply voltage (1.62V-3.63V) |
| Pin 7 | PA04 — GPIO / SERCOM0[2] / ADC[4] |
| Pin 8 | PA05 — GPIO / SERCOM0[3] / ADC[5] |
| Pin 9 | PA06 — GPIO / SERCOM0[4] / ADC[6] |
| Pin 10 | PA07 — GPIO / SERCOM0[5] / ADC[7] |
| Pin 11 | PA08 — GPIO / SERCOM2[0] / ADC[8] / PTC |
| Pin 12 | PA09 — GPIO / SERCOM2[1] / ADC[9] / PTC |
| Pin 13 | PA10 — GPIO / SERCOM2[2] / PTC |
| Pin 14 | PA11 — GPIO / SERCOM2[3] / PTC |
| Pin 15 | PA14 — GPIO / SERCOM4[2] / SWDIO |
| Pin 16 | PA15 — GPIO / SERCOM4[3] / SWCLK |
| Pin 17 | PA16 — GPIO / SERCOM1[0] |
| Pin 18 | PA17 — GPIO / SERCOM1[1] |
| Pin 19 | PA18 — GPIO / SERCOM3[2] |
| Pin 20 | PA19 — GPIO / SERCOM3[3] |
| Pin 21 | PA20 — GPIO / SERCOM5[2] |
| Pin 22 | PA21 — GPIO / SERCOM5[3] |
| Pin 23 | PA22 — GPIO / SERCOM3[0] |
| Pin 24 | PA23 — GPIO / SERCOM3[1] |
| Pin 25 | PA24 — GPIO / SERCOM5[0] / USB_DM |
| Pin 26 | PA25 — GPIO / SERCOM5[1] / USB_DP |
| Pin 27 | RESET — Reset (active low) |
| Pin 28 | PA27 — GPIO |
| Pin 29 | PA28 — GPIO |
| Pin 30 | GND — Ground |
| Pin 31 | VDD — Supply voltage |
| Pin 32 | PA30 — GPIO / SWDIO alternate |
Typical Applications
ATSAML10E15A-AF is suitable for 7 applications: Battery-Powered IoT Sensor Nodes, Capacitive-Touch User Interfaces, Wearable Fitness and Health Bands, Smart-Card and RFID Readers (ISO7816), Industrial HMI and Control Panels, Smart Remote Controls, Medical Point-of-Care Devices.
Battery-Powered IoT Sensor Nodes
The ATSAML10E15A-AF is purpose-built for IoT sensor nodes that must run for years on a coin-cell or 2xAA battery. Its <25 uA/MHz active current and <100 nA Sleep current let duty-cycled sensor firmware run at sub-100 uA average draw. The integrated 12-bit ADC reads temperature, humidity, or gas sensors directly, while SERCOM channels drive SPI/I2C sensors without external glue logic. The wide 1.62V-3.63V supply range accepts depleted-battery operation down to 1.8V with full Flash retention.
Recommended
Capacitive-Touch User Interfaces
The on-chip Peripheral Touch Controller (PTC) turns the ATSAML10E15A-AF into a complete capacitive-touch platform supporting self-cap and mutual-cap buttons, sliders, wheels, and proximity sensing. The PTC scans in hardware, offloading the Cortex-M23 core, and supports wake-on-touch from <100 nA Sleep. This suits appliance control panels, smart locks, and wearable UIs where mechanical buttons are undesirable. Combined with 32 KB Flash the device hosts Microchip's QTouch library for advanced gestures.
Recommended
Wearable Fitness and Health Bands
Wearables need the smallest possible BOM with reliable low-power operation. The ATSAML10E15A-AF integrates ADC, DAC, comparators, PTC for tap/wake gestures, and multiple SERCOM channels in one 7x7 mm TQFP, replacing several discrete chips. Its 32 KB Flash fits BLE stack libraries (when paired with an external radio) and step-counter firmware. At <100 nA Sleep with periodic accelerometer polling, a 100 mAh Li-Po battery supports 30+ days of standby operation.
Recommended
Smart-Card and RFID Readers (ISO7816)
The ATSAML10E15A-AF integrates an ISO7816 smart-card interface on-chip, eliminating the external smart-card controller IC and reducing BOM cost and PCB area. Combined with its Cortex-M23 crypto-friendly instruction set, the part handles secure element communication for payment terminals, e-identification readers, and SIM-based IoT modules. The 8 KB SRAM is sufficient for command buffering, and 32 KB Flash hosts the application-level card-processing stack.
Recommended
Industrial HMI and Control Panels
With -40C to +125C operating range and the SAM L10 family's reputation for industrial robustness, the ATSAML10E15A-AF fits indoor/outdoor HMI panels, building-automation keypads, and equipment controllers. The PTC handles gloved-touch sensing in industrial environments, and the 12-bit ADC reads 4-20 mA loop sensors with external shunt. SERCOM channels connect to UART/SPI displays or to industrial bus bridges. The TQFP-32 footprint is easy to hand-rework during prototyping.
Recommended
Smart Remote Controls
Voice and gesture remotes for TVs and smart speakers benefit from the ATSAML10E15A-AF's <100 nA Sleep with instant wake on PTC touch or button interrupt. The 32 MHz Cortex-M23 core decodes IR or BLE remote protocols, and SERCOM channels connect to MEMS microphones or IR LEDs. The wide 1.62V-3.63V supply range works directly from 2xAAA alkaline batteries, removing the need for a separate LDO.
Recommended
Medical Point-of-Care Devices
Portable medical devices (glucometers, pulse oximeters) rely on the ATSAML10E15A-AF's low active current for longer battery life between recharges. The 12-bit ADC reads pulse-oximetry or glucose-strip analog front-ends, and the DAC generates stimulus waveforms. The integrated ISO7816 interface can read patient smart-cards in clinical environments. Microchip's IEC 60730 Class B safety library is supported on this MCU, simplifying medical-device compliance.
Recommended
Recommended Products Summary
Engineering reference data for ATSAML10E15A-AF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAML10E16A-AF | ATSAML10E15A-AU | ATSAML10D15A-MF | ATSAML11E15A-AF |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 32-TQFP (7x7 mm) | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same |
| Core | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M23 | ARM Cortex-M23 + TrustZone |
| Flash | 32 KB | 64 KB | 32 KB | 32 KB | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Max Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V |
| TrustZone Security | No | No | No | No | Yes (Arm TrustZone-M) |
| Packaging Form | Tray | Tray | Tape & Reel | Tray | Tray |
Key Differentiators
- Lowest active power in its class (vs STM32L011 (Cortex-M0+))
- Integrated Peripheral Touch Controller (PTC) (vs STM32L011)
- Built-in ISO7816 smart-card interface (vs Generic Cortex-M0+ MCUs)
- Pin-compatible Flash upgrade path (vs ATSAML10E15A-AF vs ATSAML10E16A-AF)
Design Notes
Estimated: the SAM L10 active current scales with CPU clock at <25 uA/MHz (per Microchip datasheet). At 32 MHz the active draw is roughly 800 uA, while Sleep with full SRAM retention stays under 100 nA. For a duty-cycled sensor node waking every 1 s for 5 ms, average current is approximately 5 uA, enabling multi-year CR2032 battery life. Decouple VDD with a 100-nF X7R ceramic placed within 3 mm of each VDD pin and a 4.7-uF bulk capacitor on the supply rail.
Route the SWDIO and SWCLK signals away from high-current switching traces and keep them under 50 mm to avoid debug-session lockups. Place the 32.768 kHz crystal within 5 mm of the XIN/XOUT pins with a grounded guard ring to suppress noise coupling into the low-power oscillator. The PTC lines should be guarded by a ground pour to prevent false-touch events from capacitive crosstalk.
Do not exceed 3.63 V on any VDD pin: the on-chip LDO has no over-voltage protection, and absolute-maximum stress will degrade Flash retention. Always read the silicon errata document for the actual ATSAML10E15A-AF revision before release - early silicon revs had ADC offset issues corrected in later masks. When migrating to the ATSAML11E15A-AF, the TrustZone boot sequence requires linker-script updates not present in SAM L10 projects.
SERCOM peripheral pins multiplex with PTC and analog functions; re-assigning a pin after PCB layout is impossible. Lock the pin multiplexer in the SAM L10 header file early in firmware development. For I2C buses above 400 kHz, add 4.7 kohm pull-ups to VDD and verify signal integrity with an oscilloscope on both SDA and SCL rise times, because internal pull-ups are too weak for Fast-Mode Plus.
Compliance Information
Green / RoHS compliant per Mouser and DigiKey product listings. Industrial temperature grade -40C to +125C. Not AEC-Q100 qualified - choose SAM automotive variants for vehicular use.
