ATSAML10E15A-MU - 32KB Flash Cortex-M23 MCU | Microchip 32-VQFN
MPN: ATSAML10E15A-MU ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.66 | $26.60 |
| 100 | $2.36 | $236.00 |
| 500 | $2.13 | $1,065.00 |
| 1,000 | $1.92 | $1,920.00 |
ATSAML10E15A-MU Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, volatile memory (SRAM), non-volatile memory (Flash), and peripherals such as ADCs, timers, and communication controllers. Cortex-M23 is an Armv8-M Baseline core featuring TrustZone-M security extension, single-cycle I/O access, and a deterministic interrupt latency suitable for low-power embedded applications. Within the system hierarchy, the ATSAML10E15A-MU sits as MCU -> 32-bit microcontroller -> embedded processor -> semiconductor, and as a sub-category of power management-aware MCUs designed for battery-operated end nodes.
Key features include 32 KB Flash program memory, 8 KB SRAM, a 12-bit 1 Msps ADC with up to 20 channels, a 10-bit 350 ksps DAC, two analog comparators, three op-amps, a configurable Peripheral Touch Controller supporting buttons, sliders and proximity sensing, SERCOM (serial communication) instances for UART/SPI/I2C, an ISO 7816 smart card interface, and an Event System for CPU-independent peripheral signaling. Operating voltage spans 1.62 V to 3.63 V.
The architecture pairs the Cortex-M23 core with single-cycle 32x32 multiply, Wake-Up Interrupt Controller (WIC), and SleepWalking peripherals that allow IO-driven wakeup without full CPU wake. The integrated PTC supports both self-capacitance and mutual-capacitance touch electrodes, enabling waterproof touch UI designs. A built-in 32 kHz RTC, brown-out detector, and watchdog complete the embedded feature set.
Typical applications include IoT sensor nodes, battery-powered wearables, smart card and secure access terminals, capacitive touch user interfaces for appliances and consumer electronics, low-power wireless sensor hubs, and industrial controls. The deep-sleep current under 100 nA enables multi-year coin-cell operation in metering and remote monitoring. Industrial temperature grade (-40C to +85C) supports factory-floor and outdoor deployments.
When designing with the ATSAML10E15A-MU, allocate the 32-pin VQFN thermal pad to a continuous ground pour for both electrical reference and heat spreading. Bypass VDDIN with a 1 uF and a 100 nF ceramic placed within 2 mm of the pin, and respect the decoupling guidance in the device datasheet when migrating from QFN32 to QFN24 packages.
This page synthesizes Microchip official datasheet excerpts, distributor pricing from DigiKey and Mouser as of 2026-09-22, drop-in alternatives within the SAM L10/L11 family, and practical low-power design notes not consolidated on any single distributor page.
Drop-in alternatives for ATSAML10E15A-MU — 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-MU (same form factor and footprint) — differing in Package, Core, ADC, Core Architecture, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAML10E16A-MU
✅ Drop-In✓ In Stock
$1.89 / Unit
View Datasheet →ATSAML10D16A-MU
✅ Drop-In✓ In Stock
$1.04 / Unit
View Datasheet →ATSAML10D15A-MU
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAML11E15A-MU
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →ATSAML11E14A-MU
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →ATSAML10E15A-MUT
✅ Drop-In✓ In Stock
$2.74 / Unit
View Datasheet →ATSAML10D14A-MU
✅ Drop-In✓ In Stock
$1.28 / Unit
View Datasheet →ATSAML10E15A-MU Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M23 (Armv8-M Baseline with TrustZone-M) |
| Bit Width | 32-bit |
| Maximum CPU Clock | 32 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| SRAM | 8 KB |
| Operating Voltage | 1.62 V to 3.63 V |
| ADC | 12-bit, up to 1 Msps, up to 20 channels |
| DAC | 10-bit, 350 ksps |
| Analog Comparators | 2 |
| Operational Amplifiers | 3 |
| Peripheral Touch Controller | Yes (self- and mutual-capacitance) |
| ISO 7816 Smart Card Interface | Yes |
| Active Mode Current | < 25 uA/MHz |
| Sleep Mode Current | < 100 nA |
| Temperature Grade | Industrial -40C to +85C |
| Package | 32-pin VQFN (5x5 mm) with Exposed Pad |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant (per Microchip product page) |
ATSAML10E15A-MU Pin Configuration
| Pin 1 | PA00 — General-purpose I/O / ADC input |
| Pin 2 | PA01 — General-purpose I/O / ADC input |
| Pin 3 | PA02 — General-purpose I/O / ADC input |
| Pin 4 | PA03 — General-purpose I/O / ADC input / VREFA |
| Pin 5 | GND — Ground reference |
| Pin 6 | VDDIO — I/O supply voltage |
| Pin 7 | VDDIN — Main voltage regulator input |
| Pin 8 | PA04 — General-purpose I/O / ADC input |
| Pin 9 | PA05 — General-purpose I/O / ADC input |
| Pin 10 | PA06 — General-purpose I/O / ADC input |
| Pin 11 | PA07 — General-purpose I/O / ADC input |
| Pin 12 | PA08 — General-purpose I/O / SERCOM |
| Pin 13 | PA09 — General-purpose I/O / SERCOM |
| Pin 14 | PA10 — General-purpose I/O / SERCOM |
| Pin 15 | PA11 — General-purpose I/O / SERCOM |
| Pin 16 | GND — Ground reference |
| Pin 17 | VDDCORE — Internal core voltage (decoupling) |
| Pin 18 | PA14 — General-purpose I/O / SERCOM |
| Pin 19 | PA15 — General-purpose I/O / SERCOM |
| Pin 20 | PA16 — General-purpose I/O / SERCOM |
| Pin 21 | PA17 — General-purpose I/O / SERCOM |
| Pin 22 | PA18 — General-purpose I/O / SERCOM |
| Pin 23 | PA19 — General-purpose I/O / SERCOM |
| Pin 24 | PA20 — General-purpose I/O / SERCOM |
| Pin 25 | PA21 — General-purpose I/O / SERCOM |
| Pin 26 | PA22 — General-purpose I/O / SERCOM |
| Pin 27 | PA23 — General-purpose I/O / SERCOM |
| Pin 28 | PA24 — General-purpose I/O / SERCOM |
| Pin 29 | PA25 — General-purpose I/O / SERCOM |
| Pin 30 | RESET — Reset input, active-low |
| Pin 31 | SWDIO — Serial Wire Debug I/O |
| Pin 32 | SWCLK — Serial Wire Debug clock |
Typical Applications
ATSAML10E15A-MU is suitable for 7 applications: Battery-Powered IoT Sensor Nodes, Capacitive Touch User Interfaces, Smart Card / Secure Access Terminals, Wearable Fitness and Health Bands, Industrial Sensor and Control Modules, Low-Power Wireless Sensor Hubs, Smart Metering End Nodes.
Battery-Powered IoT Sensor Nodes
The ATSAML10E15A-MU suits coin-cell IoT sensor nodes because of its <25 uA/MHz active current and <100 nA sleep current per the Microchip product page. Placed as the central MCU on a 3.0 V coin-cell rail, it sleeps with RTC wake-up and wakes only to read a sensor over SERCOM I2C then returns to standby, enabling multi-year battery life in temperature, humidity, and door/window sensor form factors. The integrated 12-bit ADC and three op-amps allow direct conditioning of low-level analog sensors without external components.
Recommended
Capacitive Touch User Interfaces
The ATSAML10E15A-MU's integrated Peripheral Touch Controller (PTC) supports self-capacitance and mutual-capacitance electrodes for buttons, sliders, wheels, and proximity sensing. In appliance front panels, the MCU scans a matrix of up to ~60 mutual-cap electrodes, debounces via hardware Event System, and drives a low-power LCD or LED indicator, all without external touch IC. The 32 KB Flash holds the touch library and a USB-less HID boot-loader for field updates.
Recommended
Smart Card / Secure Access Terminals
The ATSAML10E15A-MU integrates an ISO 7816 smart card interface, making it a fit for payment terminals, e-ID readers, and physical access control readers. Combined with the TrustZone-M secure boot path, the MCU holds card-side cryptographic state in secure memory and exposes only sanitized results over UART to a host processor. The 32-VQFN industrial temperature grade supports both indoor terminals and outdoor readers.
Recommended
Wearable Fitness and Health Bands
The ATSAML10E15A-MU's <100 nA sleep current and small 32-VQFN footprint fit wrist-worn fitness bands where PCB area is constrained. The MCU reads an optical heart-rate sensor via ADC, drives a low-power OLED or LED indicator, and logs steps via an on-chip RTC. SleepWalking peripherals let the MCU wake only on motion-detect interrupts, avoiding full CPU wake for every sample and extending coin-cell life beyond one year.
Recommended
Industrial Sensor and Control Modules
Industrial sensor hubs use the ATSAML10E15A-MU as a 4 mA-to-20 mA loop-powered or 24 V industrial bus node thanks to its -40C to +85C temperature grade. The 12-bit 1 Msps ADC reads multiple 4 mA-to-20 mA loops through external shunt resistors, and three on-chip op-amps condition the signals. SERCOM instances provide UART to a host PLC and RS-485 link via an external transceiver, while the Event System handles deterministic fault responses without CPU intervention.
Recommended
Low-Power Wireless Sensor Hubs
The ATSAML10E15A-MU pairs with sub-GHz or BLE radios as a sensor-hub MCU that sleeps at <100 nA and wakes only to gather data and forward it. Placed between an SPI-controlled radio such as the AT86RF212B and a sensor cluster, the MCU serves as the always-on controller and lets the radio stay in deep sleep most of the time. TrustZone-M isolates the radio firmware from the sensor firmware, allowing secure OTA updates in the field.
Recommended
Smart Metering End Nodes
The ATSAML10E15A-MU is suitable for residential electricity, gas, and water metering end nodes where multi-year battery life is essential. With RTC running in backup mode drawing only nA, the MCU wakes on tamper or scheduled read events, samples metrology data through the 12-bit ADC, and forwards via SERCOM UART or wireless link. Industrial temperature grade supports outdoor meter enclosures.
Recommended
Recommended Products Summary
Engineering reference data for ATSAML10E15A-MU — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAML10E16A-MU | ATSAML10D16A-MU | ATSAML10D15A-MU | ATSAML11E15A-MU | ATSAML11E14A-MU | ATSAML10D14A-MU |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 32-VQFN (5x5 mm) | 32-VQFN (5x5 mm) - same | 32-VQFN (5x5 mm) - same | 32-VQFN (5x5 mm) - same | 32-VQFN (5x5 mm) - same | 32-VQFN (5x5 mm) - same | 32-VQFN (5x5 mm) - same |
| Core | ARM Cortex-M23 @ 32 MHz | ARM Cortex-M23 @ 32 MHz | ARM Cortex-M23 @ 32 MHz | ARM Cortex-M23 @ 32 MHz | ARM Cortex-M23 @ 32 MHz + crypto | ARM Cortex-M23 @ 32 MHz + crypto | ARM Cortex-M23 @ 32 MHz |
| Flash | 32 KB | 64 KB | 64 KB | 32 KB | 32 KB | 16 KB | 16 KB |
| SRAM | 8 KB | 16 KB | 16 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| TrustZone-M | Yes | Yes | Yes | Yes | Yes + crypto accelerator | Yes + crypto accelerator | Yes |
| 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 | 1.62 V to 3.63 V | 1.62 V to 3.63 V |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Touch Controller (PTC) | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Approx. Unit Price (qty 1, as of 2026-09-22) | USD 2.95 | USD 3.30 - 3.60 | USD 3.20 - 3.50 | USD 2.90 - 3.10 | USD 3.50 - 3.80 | USD 3.20 - 3.50 | USD 2.60 - 2.90 |
Key Differentiators
- Cortex-M23 with TrustZone-M at sub-25 uA/MHz active current (vs ATSAMV71Q21B-CBT)
- Integrated Peripheral Touch Controller (PTC) eliminates external touch IC (vs ATSAML10D16A-MU with external AT42QT1010)
- On-chip three op-amps and two comparators for sensor signal conditioning (vs Discrete op-amp design on ATSAMC20)
- Deep-sleep current below 100 nA enables multi-year coin-cell operation (vs NXP LPC8N04 (Cortex-M23 competitor))
Design Notes
Decouple VDDIN with a 1 uF X7R ceramic placed within 2 mm of the pin and a 100 nF X7R within 1 mm. Place a 1 uF + 100 nF pair on VDDIO and another pair on VDDCORE per the SAM L10 datasheet decoupling diagram. For battery applications, use the integrated DC-DC converter (mode selection via fuse bits) to reduce active current below 25 uA/MHz; avoid external LDO unless the design supplies above 3.63 V.
Estimated: with a 32-VQFN 5x5 mm package and theta_JA near 35 C/W on a 2-layer 1 oz board, the junction at 32 MHz full-load rises about 12C above ambient. Most applications run far below full utilization so no heatsink is required. To improve thermal performance, allocate the exposed pad to a continuous ground pour with stitched thermal vias (4 to 8 vias) connecting to inner ground planes.
Route the SWD signals (SWDIO, SWCLK, RESET) to a 0.05 inch pitch tag-connect or 10-pin Cortex Debug header. Keep SWD traces shorter than 50 mm and surround them with ground. The 32-VQFN EP must be soldered to the ground pour for electrical reference and thermal spreading; inspect via IPC-A-610 class 2 or class 3 for medical/aerospace.
Do not leave unused pins floating; configure them as output low or enable the internal pull-up. Never exceed 3.63 V on any I/O pin; level shifters are required for 5 V buses. When migrating from QFN32 to QFN24, the SAM L10 datasheet shows peripheral multiplexing differences - verify SERCOM and ADC channel mappings before committing to the smaller package.
For designs using the 12-bit ADC at 1 Msps, place a 100 nF + 1 uF + 10 uF bypass network on VREFA. Route analog inputs away from SERCOM and SWCLK traces; use a ground moat around the analog section. When driving the ISO 7816 smart card interface, add ESD protection (such as USBLC6-2) on the card contact pins to meet IEC 61000-4-2 air-discharge 8 kV ratings.
Compliance Information
RoHS and lead-free per Microchip product page. AEC-Q100 not applicable - the L10 family targets industrial/consumer, not automotive. For automotive designs use SAM V71/S70 variants with AEC-Q100 qualification.
