ATSAM3S2AA-MUR - Cortex-M3 MCU 64MHz 128KB Flash | Microchip
MPN: ATSAM3S2AA-MUR ✓ NakahandaATSAM3S2AA-MUR Ulas
A microcontroller (MCU) is a single-chip embedded processor that integrates a CPU core, program memory, data memory, and peripherals such as timers, serial interfaces, and analog functions. Within the embedded systems hierarchy, the SAM3S sits in the medium-range general-purpose class of 32-bit MCUs, positioned above 8-bit devices like the PIC16 family and below high-performance Cortex-M4/M7 parts. The ARM Cortex-M3 architecture provides deterministic interrupt handling via the Nested Vectored Interrupt Controller (NVIC) and efficient Thumb-2 instruction execution.
Key features include 64 MHz core performance, 128KB of on-chip Flash for program storage, low-power operation across the industrial temperature range, and a peripheral set that Microchip describes as offering the best ratio of reduced power consumption, processing power, and peripherals in its class. The PIOs support a parallel data capture mode that collects data from non-standard sources such as low-cost image sensors, with DMA transfers offloading the CPU.
The device integrates a Cortex-M3 core with configurable Flash and SRAM organization, and Microchip notes Flash is architected in dual banks on SAM3S family members, supporting ECC and flash-banking techniques. The exposed-pad QFN package provides low inductance power delivery and good thermal performance for compact industrial designs.
Typical applications include industrial control panels, consumer appliances, metering systems, and sensor-hub designs that benefit from the parallel capture interface and DMA-driven data flow.
When designing, ensure the 1.62V to 3.6V supply range is respected and decouple the VDDCORE and VDDIO domains per the manufacturer datasheet; the M suffix denotes tape-and-reel packaging for automated assembly.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Mga alternatibo na pwedeng ilagay na ATSAM3S2AA-MUR — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok ATSAM3S2AA-MUR (parehas na form factor at footprint) — pagkakaiba sa Package, Core Processor, Flash Memory, RoHS Status, Packaging.
ATSAM3S2AA-MU
✅ Drop-In ⚠️ Mga Talaan Hindi NaiwerikmoMagkontak para sa presyo
Tingnan ang Datasheet →ATSAM3S2BA-MU
✅ Drop-In ⚠️ Mga Talaan Hindi NaiwerikmoMagkontak para sa presyo
Tingnan ang Datasheet →ATSAM3S4AA-MUR
✅ Drop-In ⚠️ Mga Talaan Hindi NaiwerikmoMagkontak para sa presyo
Tingnan ang Datasheet →ATSAM3S1AA-MUR
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
ATSAM3N2AA-MU
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →ATSAM3S2AA-MUR Mga Pinakamataas na Rating at Electrical Characteristics
| Core Processor | ARM Cortex-M3 |
| Core Size | 32-Bit |
| Maksimum na Taktiko ng Oras | 64 MHz |
| Flash Memory | 128KB (128K x 8) |
| Series | SAM3S |
| Supply Voltage Range | 1.62 V to 3.6 V |
| Packhaging | 48-VFQFN (7x7 mm) Exposed Pad |
| Uri ng Pagpapasok | Surface Mount |
| Peripherals | DMA, PWM, parallel capture on PIOs |
| Temperature na Operasyon | -40C to +85C (Industrial) |
| Pin-to-Pin Compatibility | Compatible with SAM3N2A |
| Packaging | Tape & Reel (R suffix) |
| Tindminan RoHS | Compliant (Green, per Mouser listing) |
Gabay sa Pin Configuration ng ATSAM3S2AA-MUR 48-vfqfn (7x7 mm) exposed pad
Pin configuration para sa ATSAM3S2AA-MUR (48-vfqfn (7x7 mm) exposed pad package). Kasama sa digital IC na ito ang GPIO, mga communication interface (UART, SPI, I2C), at mga power pin. Sumangguni sa datasheet ng manufacturer para sa mga alternatibong function ng pin at mga opsyon sa configuration. Mahalaga para sa disenyo ng embedded system at PCB layout.
Wala ng detalyadong pinout data na magagamit para sa ATSAM3S2AA-MUR.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
ATSAM3S2AA-MUR ay nararapat para sa 6 aplikasyons: Industrial Control Panels, Metering and Smart Energy, Low-Cost Image Sensor Interfaces, Consumer Appliances, Sensor Hubs and Data Loggers, Portable and Battery-Powered Devices.
Industrial Control Panels
The ATSAM3S2AA-MUR fits industrial control and automation nodes where a 64 MHz Cortex-M3 with 128KB Flash handles real-time I/O scanning, PWM generation, and serial protocol bridging. Its 1.62V to 3.6V operation tolerates noisy industrial rails after regulation, and the industrial -40C to +85C grade covers unconditioned cabinets. DMA-driven peripherals keep the CPU free for control loops, while the exposed-pad QFN dissipates heat reliably. Placed on a 4-layer PCB with solid ground return, it delivers deterministic performance for PLC expansion modules, motor control user interfaces, and sensor aggregation points in factory equipment.
Inirekomenda
Metering and Smart Energy
Energy meters and sub-metering endpoints benefit from the ATSAM3S2AA-MUR's balance of low power and 32-bit math capability. The Cortex-M3 core at 64 MHz executes energy calculation algorithms faster than 8-bit alternatives, while Microchip positions the SAM3S as having the best ratio of power consumption to processing power in its class. 128KB Flash accommodates metrology firmware plus communication stacks, and the 1.62V to 3.6V range suits battery-backed or capacitor-backed power schemes. DMA handles periodic ADC sample streaming without CPU intervention, and the QFN package's small 7x7 mm footprint fits dense meter PCBs.
Inirekomenda
Low-Cost Image Sensor Interfaces
Microchip explicitly highlights the parallel data capture mode on the SAM3S PIOs, which collects data from external devices not compliant with standard memory read protocols, such as low-cost image sensors, with DMA transferring the data to memory offloading the CPU. The ATSAM3S2AA-MUR is therefore a strong host for barcode readers, simple camera modules, and scanner front ends. The 64 MHz core processes line data in real time while DMA streams frames into SRAM. Because the capture path avoids standard bus protocols, system cost stays low, and the exposed-pad QFN provides the signal integrity needed for parallel pixel buses.
Inirekomenda
Consumer Appliances
Appliance user interfaces, motorized enclosures, and control boards use the ATSAM3S2AA-MUR where a responsive 32-bit MCU drives touch buttons, displays, and actuators. The 64 MHz Cortex-M3 comfortably runs UI frameworks and housekeeping tasks simultaneously, and 128KB Flash holds localized menus plus communication firmware. Industrial temperature rating exceeds appliance chamber requirements, adding margin near heat sources. PWM outputs drive motors and backlighting, while DMA reduces CPU loading during sensor polling. The 48-QFN 7x7 mm package enables compact two-layer cost-sensitive boards, and tape-and-reel packaging suits high-volume SMT appliance production lines.
Inirekomenda
Sensor Hubs and Data Loggers
The ATSAM3S2AA-MUR serves as a sensor aggregation hub where multiple analog and digital sensors feed a central logging system. DMA channels move peripheral data to memory autonomously, the parallel capture mode accepts non-standard digital sensors, and the 64 MHz core timestamps and formats records for storage. The 1.62V to 3.6V supply range supports direct battery operation through a low-dropout regulator, extending battery life in unattended loggers. 128KB Flash reserves space for calibration tables and communication stacks, while the industrial grade and compact QFN package permit deployment in outdoor and embedded environments.
Inirekomenda
Portable and Battery-Powered Devices
Handheld instruments, portable readers, and wearable-adjacent devices leverage the SAM3S family's low-power design philosophy. The ATSAM3S2AA-MUR's 1.62V to 3.6V input tolerates a discharging lithium cell through an LDO, and low-power wait modes allow the 64 MHz core to sleep between events while DMA or peripherals maintain data flow. 128KB Flash supports protocol stacks for short-range connectivity bridges, and the 7x7 mm QFN keeps the PCB footprint small enough for ergonomic enclosures. Tape-and-reel delivery supports mid-volume production, and pin compatibility with the SAM3N2A gives a cost-down migration path as volumes grow.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for ATSAM3S2AA-MUR — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | ATSAM3S2AA-MU | ATSAM3S2BA-MU | ATSAM3S4AA-MUR | ATSAM3S1AA-MUR | ATSAM3N2AA-MU |
|---|---|---|---|---|---|---|
| Package | 48-VFQFN (7x7 mm) EP | 48-VFQFN (7x7 mm) EP - same | 48-VFQFN (7x7 mm) EP - same | 48-VFQFN (7x7 mm) EP - same | 48-VFQFN (7x7 mm) EP - same | 48-VFQFN (7x7 mm) EP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Max Clock | Cortex-M3 / 64 MHz | Cortex-M3 / 64 MHz | Cortex-M3 / 64 MHz | Cortex-M3 / 64 MHz | Cortex-M3 / 64 MHz | Cortex-M3 / 64 MHz |
| Flash Memory | 128KB | 128KB | 256KB | 256KB | 64KB | 128KB |
| Supply Voltage | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V |
| Pin-to-Pin Compatibility | Compatible with SAM3N2A | Identical die | Same family footprint | Same family footprint | Same family footprint | Pin-to-pin compatible with SAM3S2A per Microchip |
| Peripheral Set | SAM3S full set incl. parallel capture + DMA | Identical | Identical | Identical | Identical | Reduced (SAM3N set) |
| Packaging Format | Tape & Reel (R suffix) | Tray | Tray | Tape & Reel | Tape & Reel | Tray |
Pangunahing mga Pagkakaiba
- Parallel capture on PIOs with DMA (kumpara saATSAM3N2AA-MU)
- Flash flexibility within one footprint (kumpara saATSAM3S4AA-MUR)
- Cost-down path via smaller Flash (kumpara saATSAM3S1AA-MUR)
Talaan ng Disenyo
The ATSAM3S2AA-MUR accepts 1.62V to 3.6V across its supply domains, but the SAM3S family uses multiple supply pins (VDDIO, VDDCORE, VDDIN/regulator output per datasheet). Decouple each domain with 100 nF ceramic capacitors placed within 2 mm of the pins, plus bulk capacitance at the regulator. Power up all domains before releasing reset, and follow the datasheet power-up ramp requirements to avoid latch-up or corrupted Flash state. Estimated: at 64 MHz active operation, expect tens of mA; verify against the datasheet current-versus-frequency tables for your battery budget.
The 48-VFQFN exposed pad is the primary ground and thermal path - do not leave it unconnected. Solder the exposed pad to a grounded copper pour with an array of thermal vias (typically 3x3 or 4x4 via grid, filled or tented per your assembly house's capability) to reduce ground inductance and improve thermal relief. Include pin-1 dot alignment on your silkscreen for pick-and-place, and follow Microchip's QFN land-pattern recommendation for paste apertures on the center pad to prevent voiding and tombstoning.
When substituting with the pin-compatible ATSAM3N2AA-MU, remember the SAM3N family drops some SAM3S peripherals - review every peripheral initialization call before porting firmware. When migrating between Flash sizes (S1/S2/S4), linker scripts and Flash bank configuration must be updated since SRAM/Flash split points differ. Finally, the R suffix means tape-and-reel: reel quantities and dry-bake requirements (MSL) must be confirmed with the distributor before reflow, as moisture-saturated QFN packages can crack during reflow soldering.
Impormasyon ng Pagsunod sa Kautusan
Mouser listing describes the part as QFN, Green, industrial temperature, MRL A. Formal REACH and conflict-minerals certificates should be requested from Microchip or the distributor.
