ATSAMC21J15A-MUT - 48MHz Cortex-M0+ MCU, 32KB Flash | Microchip
MPN: ATSAMC21J15A-MUT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.47 | $147.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.21 | $1,210.00 |
| 2,500 | $1.12 | $2,800.00 |
ATSAMC21J15A-MUT Overview
Key features include 32 KB of Flash memory, 4 KB of SRAM, a 48 MHz ARM Cortex-M0+ core, and integrated CAN-FD support that makes it suited for automotive and industrial network communication. The device also integrates up to six SERCOM serial communication modules, a 12-bit ADC, multiple timers, and on-chip touch support via the Peripheral Touch Controller (PTC). It is engineered for noisy industrial environments where robust peripherals and 5V tolerance are required.
The ATSAMC21J15A-MUT uses a Harvard-bus architecture on the Cortex-M0+ core with a single-cycle multiplier and hardware divider, delivering 0.93 DMIPS/MHz efficiency. The 64-pin QFN variant exposes a wide peripheral set including USB, CAN-FD, SERCOM, and 12-bit ADC, enabling compact board layouts for cost-sensitive embedded designs without sacrificing I/O flexibility.
Typical applications include industrial automation, automotive body and chassis networks (CAN-FD), building automation, sensor hubs, smart lighting controllers, and low-cost white goods. Its 5V tolerance and FuSa-capable architecture also make it suitable for safety-related industrial sensors and motor control loops.
When designing with the ATSAMC21J15A-MUT, provide clean 5V and 3.3V rails with adequate bulk decoupling, route the SWD signals short and direct, and refer to Microchip's SAM C21 Family Datasheet for full pin-mux and peripheral allocation. For functional safety designs, follow the SAM C21 FuSa manual and validate firmware against the device errata before release.
Drop-in alternatives for ATSAMC21J15A-MUT — 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 ATSAMC21J15A-MUT (same form factor and footprint) — differing in Package, Core, ADC, Functional Safety (FuSa), Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAMC21J16A-MUT
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAMC21J17A-MUT
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAMC21J18A-MUT
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAMC21G15A-MUT
✅ Drop-In✓ In Stock
$1.94 / Unit
View Datasheet →ATSAMC21E15A-MUT
✅ Drop-In✓ In Stock
$4.05 / Unit
View Datasheet →ATSAMD21J18A-MUT
✅ Drop-In✓ In Stock
$3.42 / Unit
View Datasheet →ATSAMC21J15A-MUT Maximum Ratings & Electrical Characteristics
| Manufacturer | Microchip Technology |
| Series | SAM C21 |
| Core | ARM Cortex-M0+ |
| Core Width | 32-bit |
| CPU Clock Speed | 48 MHz |
| Flash Memory | 32 KB (32K x 8) |
| SRAM | 4 KB |
| Package | 64-pin QFN (9x9 mm) |
| Package Code | HVQCCN |
| Operating Voltage | 5 V |
| Operating Temperature | -40C to +85C (industrial, T&R reel) |
| Mounting Type | Surface Mount |
| Connectivity | CAN-FD, I2C, SPI, UART, USB |
| Peripherals | Brown-out Detect, DMA, POR, WDT |
| Functional Safety (FuSa) | Yes |
| Lead Free / RoHS | Compliant |
| Packaging | Tape & Reel |
ATSAMC21J15A-MUT hvqccn Pin Configuration Guide
Pin configuration for ATSAMC21J15A-MUT (hvqccn package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ATSAMC21J15A-MUT.
Refer to the datasheet for full pin configuration.
Typical Applications
ATSAMC21J15A-MUT is suitable for 6 applications: Industrial Automation Controllers, Automotive Body & Chassis Networks (CAN-FD), Smart Building & HVAC Control, Appliance & White Goods Motor Control, Sensor Hubs & IoT Edge Nodes, Lighting & LED Controllers.
Industrial Automation Controllers
The ATSAMC21J15A-MUT's 5 V native supply, 48 MHz Cortex-M0+ core, and -40C to +85C industrial temperature grade make it ideal for industrial automation controllers. It drives discrete I/O modules, sensor hubs, and protocol bridges on factory floors where 24 V / 5 V noise immunity is required. The integrated CAN-FD peripheral allows direct connection to industrial CAN networks without an external transceiver logic supply, simplifying BOM. Engineers can rely on the FuSa documentation to develop safety-related logic per IEC 61508 SIL-1/SIL-2 capable paths. Recommended companions include the ATSAMC21G18A-AUT for higher memory nodes and the ATSAMC21J15A-ANT for TQFP-based breadboarding.
Recommended
Automotive Body & Chassis Networks (CAN-FD)
The ATSAMC21J15A-MUT's on-chip CAN-FD controller makes it well suited to automotive body and chassis ECUs such as mirror controllers, seat controllers, lighting modules, and door-handle sensors. The 5 V tolerance interfaces directly to 12 V automotive rails via standard transceivers, while the Functional Safety (FuSa) manual supports OEM safety cases. With 32 KB Flash and 4 KB SRAM, the device has enough headroom for CAN-FD stack plus simple diagnostic firmware. Production designers pair it with the ATSAMC20J18A-MUT for CAN 2.0 nodes that don't need FuSa, reducing BOM cost.
Recommended
Smart Building & HVAC Control
Building automation systems benefit from the ATSAMC21J15A-MUT's mix of CAN-FD, multiple SERCOM ports, and capacitive touch via the on-chip PTC. The device can serve as a room controller, fan-coil unit brain, or wireless sensor hub front-end when paired with an external LoRa or BLE module over UART. The 5 V supply tolerance lets it share rails with legacy HVAC actuators, avoiding level shifters. Recommended companions include the ATSAMC21G15A-MUT for fan-coil nodes and the ATSAMC20G15A-MUT for non-FuSa sensor endpoints.
Recommended
Appliance & White Goods Motor Control
The ATSAMC21J15A-MUT drives low-cost motor control loops in washing machines, dishwashers, and small kitchen appliances, where 5 V tolerance, integrated ADC, and PWM timers suffice for variable-speed brushed or BLDC motor control. The Cortex-M0+ at 48 MHz runs sensorless commutation algorithms for pumps and fans. Its Functional Safety documentation supports safety-relevant features like over-temperature detection. Designers pair it with the ATSAMC21E15A-MUT for cost-reduced 32-pin variants and the ATSAMC20E16A-MNT for sub-BOM tier.
Recommended
Sensor Hubs & IoT Edge Nodes
The ATSAMC21J15A-MUT acts as a low-power sensor hub front-end in IoT edge devices, aggregating analog and digital sensor data over SERCOM (I2C/SPI) and forwarding via CAN-FD or UART to a higher-tier processor. The Peripheral Touch Controller enables capacitive user interfaces, while 32 KB Flash accommodates modest edge-processing stacks. With -40C to +85C operation, it survives outdoor enclosures. Pair it with the ATSAMC21J16A-MUT for higher-memory sensor hubs and the ATSAMC21G18A-AUT for gateway-class nodes.
Recommended
Lighting & LED Controllers
Architectural and commercial LED lighting drivers benefit from the ATSAMC21J15A-MUT's 5 V tolerance, PWM timers, and 12-bit ADC for color-mixing and dimming feedback loops. The Cortex-M0+ runs DMX-512, DALI, or proprietary lighting protocols over SERCOM while the CAN-FD peripheral connects to building-wide lighting buses. Functional Safety documentation supports emergency-lighting paths. Recommended companions include the ATSAMC21G15A-MUT for individual channel controllers and the ATSAMC20G15A-MUT for cost-down versions.
Recommended
Recommended Products Summary
Engineering reference data for ATSAMC21J15A-MUT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAMC21J16A-MUT | ATSAMC21J17A-MUT | ATSAMC21J18A-MUT | ATSAMC21G15A-MUT | ATSAMC21E15A-MUT | ATSAMD21J18A-MUT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin QFN (9x9 mm) | 64-pin QFN (9x9 mm) - same | 64-pin QFN (9x9 mm) - same | 64-pin QFN (9x9 mm) - same | 64-pin QFN (9x9 mm) - same | 64-pin QFN (9x9 mm) - same | 64-pin QFN (9x9 mm) - same |
| Flash Memory | 32 KB | 64 KB | 128 KB | 256 KB | 32 KB | 32 KB | 256 KB |
| SRAM | 4 KB | 8 KB | 16 KB | 32 KB | 4 KB | 4 KB | 32 KB |
| CPU Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| CAN-FD | Yes | Yes | Yes | Yes | Yes | Yes | No (SAM D21 lacks CAN-FD) |
| Functional Safety (FuSa) | Yes | Yes | Yes | Yes | Yes | Yes | No |
| Operating Voltage | 5 V (2.7-5.5 V) | 5 V (2.7-5.5 V) | 5 V (2.7-5.5 V) | 5 V (2.7-5.5 V) | 5 V (2.7-5.5 V) | 5 V (2.7-5.5 V) | 3.3 V (1.62-3.6 V) |
Key Differentiators
- CAN-FD with on-chip FuSa documentation (vs ATSAMD21J18A-MUT)
- 5 V native tolerance (vs ATSAMD21J18A-MUT)
- Lowest-cost SAM C21 entry with same peripheral set (vs ATSAMC21J18A-MUT)
Design Notes
The ATSAMC21J15A-MUT operates from 2.7 V to 5.5 V and integrates an internal 1.2 V core LDO. Place a 1 uF X7R ceramic bypass cap on VDDIN and a 1 uF cap on VDDOUT (pin 1 and pin 44 area) within 2 mm of the package. Add a 10 uF bulk cap on the 5 V rail and keep the trace loop area small to reduce switching noise coupling into the ADC reference. If you power the part from a switching regulator, route the analog AVSS/AVDD pair through a ferrite bead for ADC noise isolation.
The 64-pin QFN (9x9 mm) has an exposed thermal pad (EP) on pin 65 that MUST be soldered to a ground pad for thermal dissipation and electrical performance. Stitch the EP to the inner ground plane with at least 9 thermal vias in a 3x3 array. Route SERCOM and SWD signals on the outer layers to keep impedance controlled, and keep the 32 kHz crystal traces short (under 5 mm) and symmetric to minimize load-capacitance mismatch.
Do not assume all 64 pins of the QFN package are bonded out identically to the 64-pin TQFP (ATSAMC21J15A-MPT) - some peripheral mappings differ due to package die pad layout. Always re-run the Atmel START pin-mux tool when migrating between QFN and TQFP variants. Also verify the BOOTPROT fuses are set before locking the chip, and leave the SWD pins accessible for production programming and field firmware updates.
Compliance Information
RoHS compliant per Microchip product page. AEC-Q100 not explicitly qualified for the -MUT industrial 85C grade - choose automotive-graded -AUT suffix variants for AEC-Q100 requirements. Functional Safety (FuSa) documentation available per IEC 61508 for SAM C21 family.
