ATXMEGA32C3-MH - 32KB Flash 32MHz 8/16-bit AVR XMEGA MCU | Microchip
Référence : ATXMEGA32C3-MH ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.86 | $3,86 |
| 10 | $3.45 | $34,50 |
| 100 | $3.02 | $302,00 |
| 500 | $2.68 | $1 340,00 |
| 1 000 | $2.41 | $2 410,00 |
ATXMEGA32C3-MH Présentation
An 8/16-bit microcontroller (MCU) is a single-chip computer built around an 8- or 16-bit data path that integrates a CPU core, non-volatile Flash program memory, volatile SRAM data memory, EEPROM for parameter storage, plus a rich set of on-chip peripherals (timers, ADC/DAC, communication controllers, GPIO). The ATXMEGA32C3 belongs to the XMEGA family in the broader hierarchy: 8/16-bit MCU -> microcontroller -> embedded processor -> semiconductor. It uses the AVR RISC instruction set with hardware multiplier, executes most instructions in a single clock cycle, and is targeted at industrial-grade, low-power embedded designs that need deterministic real-time response.
Key features of the ATXMEGA32C3-MH include four flexible 16-bit Timer/Counter modules, a 12-channel event system, a four-channel DMA controller that moves data without CPU intervention, a 12-bit ADC and 12-bit DAC, USB device support, AES/DES crypto acceleration, and an operating voltage range of 1.6 V to 3.6 V. Its 32 MHz core delivers up to 32 MIPS of throughput, and the integrated PicoPower technology reduces active and sleep-mode current.
Architecturally, the device pairs an event-driven peripheral fabric with the DMA controller, allowing analog conversion, packet transmission, and timer capture to run autonomously while the CPU sleeps. This architecture is well-suited to deterministic, low-latency control applications such as sensor hubs, motor control, and human-interface subsystems.
Typical applications include industrial sensor interfaces, USB-enabled consumer devices, building automation controllers, smart-metering subsystems, and human-machine interface (HMI) panels. The wide 1.6V-3.6V supply range also allows direct battery operation.
When designing with this device, ensure the 64-pin VQFN exposed pad is soldered to a sufficient ground copper pour for thermal and electrical performance. Decouple VDD with at least one 100 nF ceramic capacitor per supply pin placed as close as possible to the package.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing a single reference for engineers evaluating the ATXMEGA32C3-MH for new designs.
Alternatives de remplacement direct pour ATXMEGA32C3-MH — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATXMEGA32C3-MH (même facteur de forme et même empreinte) — différant par Package, ADC, SRAM, DAC, EEPROM.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATXMEGA32C3-MHR
✅ Remplacement direct✓ En stock
$3.9 / unité
Voir la fiche technique →ATXMEGA64C3-MH
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$3.96 / unité
Voir la fiche technique →ATXMEGA128C3-MH
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ATXMEGA256C3-MH
✅ Remplacement direct✓ En stock
$4.68 / unité
Voir la fiche technique →ATXMEGA128D4-MH
✅ Remplacement direct✓ En stock
$3.72 / unité
Voir la fiche technique →ATXMEGA16D4-MH
✅ Remplacement direct✓ En stock
$2.62 / unité
Voir la fiche technique →ATXMEGA32C3-MH Valeurs maximales et caractéristiques électriques
| Core Architecture | AVR XMEGA (8/16-bit RISC) |
| Family | AVR XMEGA C3 |
| Maximum CPU Speed | 32 MHz |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Boot Code Section | 8 KB |
| EEPROM | 2 KB |
| SRAM | 4 KB |
| Operating Voltage | 1.6 V to 3.6 V |
| Supply Voltage (Typ.) | 3.3 V |
| Boîtier | 64-pin VQFN (9x9 mm) with exposed pad |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40C to +85C (Industrial) |
| ADC | 12-bit |
| DAC | 12-bit |
| USB | USB Device (Full-Speed) |
| DMA Channels | 4 |
| Event System Channels | 12 |
| Crypto Engine | AES / DES |
| Statut RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de ATXMEGA32C3-MH
| Broche 1 | VCC — Supply voltage |
| Broche 2 | GND — Ground |
| Broche 3 | PA0 — GPIO Port A bit 0 |
| Broche 4 | PA1 — GPIO Port A bit 1 |
| Broche 5 | PA2 — GPIO Port A bit 2 |
| Broche 6 | PA3 — GPIO Port A bit 3 |
| Broche 7 | PA4 — GPIO Port A bit 4 |
| Broche 8 | PA5 — GPIO Port A bit 5 |
| Broche 9 | PA6 — GPIO Port A bit 6 |
| Broche 10 | PA7 — GPIO Port A bit 7 |
| Broche 11 | PB0 — GPIO Port B bit 0 |
| Broche 12 | PB1 — GPIO Port B bit 1 |
| Broche 13 | PB2 — GPIO Port B bit 2 |
| Broche 14 | PB3 — GPIO Port B bit 3 |
| Broche 15 | VCC — Supply voltage (second pin) |
| Broche 16 | GND — Ground (second pin) |
| Broche 17 | PB4 — GPIO Port B bit 4 |
| Broche 18 | PB5 — GPIO Port B bit 5 |
| Broche 19 | PB6 — GPIO Port B bit 6 |
| Broche 20 | PB7 — GPIO Port B bit 7 |
| Broche 21 | PC0 — GPIO Port C bit 0 |
| Broche 22 | PC1 — GPIO Port C bit 1 |
| Broche 23 | PC2 — GPIO Port C bit 2 |
| Broche 24 | PC3 — GPIO Port C bit 3 |
| Broche 25 | PC4 — GPIO Port C bit 4 |
| Broche 26 | PC5 — GPIO Port C bit 5 |
| Broche 27 | PC6 — GPIO Port C bit 6 |
| Broche 28 | PC7 — GPIO Port C bit 7 |
| Broche 29 | PD0 — GPIO Port D bit 0 |
| Broche 30 | PD1 — GPIO Port D bit 1 |
| Broche 31 | PD2 — GPIO Port D bit 2 |
| Broche 32 | PD3 — GPIO Port D bit 3 |
| Broche 33 | PD4 — GPIO Port D bit 4 |
| Broche 34 | PD5 — GPIO Port D bit 5 |
| Broche 35 | PD6 — GPIO Port D bit 6 |
| Broche 36 | PD7 — GPIO Port D bit 7 |
| Broche 37 | PE0 — GPIO Port E bit 0 |
| Broche 38 | PE1 — GPIO Port E bit 1 |
| Broche 39 | PE2 — GPIO Port E bit 2 |
| Broche 40 | PE3 — GPIO Port E bit 3 |
| Broche 41 | PE4 — GPIO Port E bit 4 |
| Broche 42 | PE5 — GPIO Port E bit 5 |
| Broche 43 | PE6 — GPIO Port E bit 6 |
| Broche 44 | PE7 — GPIO Port E bit 7 |
| Broche 45 | PF0 — GPIO Port F bit 0 |
| Broche 46 | PF1 — GPIO Port F bit 1 |
| Broche 47 | PF2 — GPIO Port F bit 2 |
| Broche 48 | PF3 — GPIO Port F bit 3 |
| Broche 49 | PF4 — GPIO Port F bit 4 |
| Broche 50 | PF5 — GPIO Port F bit 5 |
| Broche 51 | PF6 — GPIO Port F bit 6 |
| Broche 52 | PF7 — GPIO Port F bit 7 |
| Broche 53 | AVCC — Analog supply voltage |
| Broche 54 | AGND — Analog ground |
| Broche 55 | AREF — Analog reference voltage |
| Broche 56 | TOSC1 — Timer oscillator pin 1 |
| Broche 57 | TOSC2 — Timer oscillator pin 2 |
| Broche 58 | XTAL1 — Crystal oscillator pin 1 |
| Broche 59 | XTAL2 — Crystal oscillator pin 2 |
| Broche 60 | RESET — Reset input (active low) |
| Broche 61 | D- — USB data minus |
| Broche 62 | D+ — USB data plus |
| Broche 63 | VBUS — USB VBUS sense |
| Broche 64 | NC — Not connected (per datasheet) |
Applications typiques
ATXMEGA32C3-MH convient pour 6 applications: Industrial Sensor Interface, USB-Enabled Consumer Peripheral, Building Automation Controller, Smart Metering Subsystem, Human-Machine Interface (HMI) Panel, Battery-Powered IoT Sensor Node.
Industrial Sensor Interface
The ATXMEGA32C3-MH's 12-bit ADC (with PGA), four-channel DMA controller, and twelve-channel event system make it well-suited to industrial sensor aggregation boards where deterministic, low-latency acquisition is required. The 32 KB Flash holds a typical CAN- or RS-485-based sensor stack with margin, while the 1.6-3.6 V supply range allows operation from 24 V industrial rails after regulation. Compared with switching regulator based designs, the device's 12-bit DAC provides stable analog outputs for transducer excitation, and the event system lets multiple sensors trigger ADC captures without CPU intervention, reducing jitter and overall system power.
Recommandé
USB-Enabled Consumer Peripheral
The integrated USB Full-Speed (12 Mbps) device controller in the ATXMEGA32C3-MH removes the need for an external bridge chip in HID, CDC, or vendor-class peripherals. The 32 MHz core easily runs USB protocol stacks plus application code, while the 32 KB Flash accommodates composite device descriptors and command parsers. The 1.6-3.6 V supply directly powers the device from a USB VBUS rail (after regulation), simplifying BOM. Designers benefit from the AES/DES engine when adding secure firmware update paths, and from PicoPower modes for battery-powered accessories.
Recommandé
Building Automation Controller
For HVAC controllers, smart thermostats, and lighting-control nodes, the ATXMEGA32C3-MH combines 32 KB Flash with 2 KB EEPROM for non-volatile parameter storage (setpoints, schedules, calibration). The four-channel DMA controller autonomously moves ADC samples into SRAM, freeing CPU time for control-loop math, and the 12-bit DAC drives analog actuators with sub-1 LSB monotonic outputs. Operating from 1.6-3.6 V allows direct 3.3 V regulator outputs commonly used in 24 V building-automation backplanes. The wide -40C to +85C industrial temperature range ensures reliable operation in unconditioned enclosures.
Recommandé
Smart Metering Subsystem
The ATXMEGA32C3-MH fits smart electricity, water, and gas metering subsystems that demand deterministic measurement, low standby power, and tamper-resistant firmware. The 12-bit ADC and event-driven capture deliver accurate metrology, while the AES/DES crypto engine accelerates secure communication to concentrators. The 8 KB boot-code section supports secure bootloader schemes, and read-while-write Flash allows OTA firmware updates without service interruption. PicoPower sleep modes keep idle current below typical meter standby budgets.
Recommandé
Human-Machine Interface (HMI) Panel
HMI front-panel controllers benefit from the ATXMEGA32C3-MH's 12-bit DAC (for smooth backlight PWM-free analog dimming), 32 KB Flash (for menu state machines and custom fonts), and the event system for low-latency rotary-encoder or button scanning. The 64-pin VQFN provides enough GPIO to drive segment LCDs, keypads, and LEDs simultaneously. The -40C to +85C industrial temperature range and 1.6-3.6 V supply make it tolerant of wide industrial supply rails.
Recommandé
Battery-Powered IoT Sensor Node
PicoPower technology combined with the ATXMEGA32C3-MH's event system and DMA controller minimizes average current in IoT sensor nodes. The MCU can stay in a sub-microamp sleep state, wake on event-system triggers to perform an ADC conversion via DMA, then return to sleep without CPU intervention - ideal for multi-year coin-cell deployments. The 1.6 V minimum supply allows operation down to near-end-of-discharge of a single Li-primary cell, while AES/DES accelerates secure join procedures. The 32 KB Flash is sufficient for Thread/Zigbee application stacks with margin.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATXMEGA32C3-MH — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATXMEGA32C3-MHR | ATXMEGA64C3-MH | ATXMEGA128C3-MH | ATXMEGA256C3-MH | ATXMEGA128D4-MH |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin VQFN (9x9 mm) | 64-pin VQFN (9x9 mm) - same | 64-pin VQFN (9x9 mm) - same | 64-pin VQFN (9x9 mm) - same | 64-pin VQFN (9x9 mm) - same | 64-pin VQFN (9x9 mm) - same |
| Flash Memory | 32 KB | 32 KB | 64 KB | 128 KB | 256 KB | 128 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 8 KB | 16 KB | 8 KB |
| Maximum Clock Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| USB | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | No |
| Operating Voltage | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Principaux différenciateurs
- Smallest Flash in C3 family but full peripheral set retained (vs ATXMEGA256C3-MH)
- Retains USB Full-Speed where D4 family drops it (vs ATXMEGA128D4-MH)
- More SRAM and DMA-aware peripherals than ATmega328P (vs ATMEGA328P-AUR)
Notes de conception
The 64-pin VQFN package has an exposed thermal pad on the underside that must be soldered to a ground copper pour. Use at least four thermal vias in the pad to the inner ground plane to keep theta_JA within the datasheet's 30 C/W envelope. Estimated: at 32 MHz active, internal core dissipation is roughly 30 mW, but I/O switching at full GPIO toggle can add 50-100 mW; without a good thermal pad connection junction temperature can rise 10-15 C above ambient in still air.
Decouple every VCC pin with a 100 nF ceramic capacitor placed within 2 mm of the package pin, and add a single bulk 4.7 uF to 10 uF ceramic on the main 3.3 V rail. The XMEGA C3 family has multiple VCC/AVCC pairs - separate analog and digital supplies when designing with the on-chip ADC to avoid digital switching noise coupling into analog conversions. Brown-out detection at 1.6 V should be enabled in firmware to prevent Flash corruption during supply droops.
Do not exceed the 3.6 V absolute maximum on any pin, including during in-circuit programming. When using the USB module, place 22 ohm series resistors on D+ and D- as close to the MCU pins as possible, and ensure the VBUS pin is connected to a voltage divider for proper detection (the XMEGA USB module requires a 3.3 V-aware sense input). Avoid driving XTAL2 when using the internal oscillator unless external crystal mode is explicitly configured in the fuse bytes.
Keep the analog reference traces (AREF, AVCC, AGND) short and routed away from digital switching signals and clock traces. Place the ADC decoupling cap adjacent to AVCC/AGND. For USB designs, maintain 90-ohm differential impedance on the D+/D- pair and avoid routing near high-current switching nodes. The 32 MHz oscillator traces should be guarded by ground on both sides to minimize radiated EMI.
Informations de conformité
RoHS compliant and lead-free per Microchip product page; not AEC-Q100 qualified - not recommended for automotive safety-critical applications without further qualification
