PIC32MM0256GPM028-E/ML - 32-bit 25MHz 256KB Flash MCU | Microchip
Référence : PIC32MM0256GPM028-E/ML ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $4.1 | $4,10 |
| 10 | $3.78 | $37,80 |
| 100 | $3.25 | $325,00 |
| 500 | $2.85 | $1 425,00 |
| 1 000 | $2.48 | $2 480,00 |
PIC32MM0256GPM028-E/ML Présentation
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, data RAM, and peripheral interfaces. The PIC32MM family uses the MIPS32 microAptiv core, a 32-bit RISC architecture commonly found in low-power embedded applications. Within the broader semiconductor hierarchy, MCUs sit between simple microprocessors and full SoCs, providing a self-contained compute solution optimized for real-time control tasks. The PIC32MM GPM sub-family targets battery-powered or energy-harvesting designs where idle current and active efficiency both matter.
Key features include up to 21 general-purpose I/O pins, a 12-bit ADC with up to 200 ksps conversion rate, multiple timer/counter modules, I2C, SPI, UART, and a USB 2.0 full-speed device/host/OTG controller. The eXtreme low-power design achieves sub-microamp sleep currents, multiple low-power modes (Sleep, Idle, Deep Sleep with RTCC), and fast wake-up times. ECC on Flash improves reliability in environments subject to alpha particles or bit flips.
Architecture depth: the device employs a single-cycle hardware multiply/divide unit, a prefetch cache to accelerate Flash execution, and a DMA controller that offloads data movement from the CPU. The 3.3V-tolerant I/O supports mixed-voltage interfacing without external translators.
Typical applications include low-power USB peripherals, IoT sensor nodes, wearable fitness devices, HMI touch interfaces, and battery-powered medical accessories. The wide 2.0V to 3.6V operating range supports direct Li-ion battery connection.
When designing with this MCU, ensure the USB bus-power rail meets the 4.4V VBUS requirement (an LDO or boost may be required from a 3.6V source). Decouple VDD with 100 nF ceramic capacitors placed within 3 mm of each power pin to limit switching noise coupling into the ADC.
This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternatives de remplacement direct pour PIC32MM0256GPM028-E/ML — 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 PIC32MM0256GPM028-E/ML (même facteur de forme et même empreinte) — différant par ADC, Package, MSL Level, USB, Core Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC32MM0256GPM028-I/ML
✅ Remplacement direct✓ En stock
$2.38 / unité
Voir la fiche technique →PIC32MM0128GPM028T-I/ML
✅ Remplacement direct✓ En stock
$2.18 / unité
Voir la fiche technique →PIC32MM0064GPM028-I/ML
✅ Remplacement direct✓ En stock
$1.85 / unité
Voir la fiche technique →PIC32MM0064GPM028T-I/M6
✅ Remplacement direct✓ En stock
$1.74 / unité
Voir la fiche technique →PIC32MM0128GPM028T-I/ML
✅ Remplacement direct✓ En stock
$2.18 / unité
Voir la fiche technique →PIC32MM0256GPM028-E/ML Valeurs maximales et caractéristiques électriques
| Core Architecture | MIPS32 microAptiv |
| Core Width | 32-bit |
| Maximum CPU Speed | 25 MHz |
| Program Memory (Flash) | 256 KB (256K x 8), ECC |
| Data Memory (SRAM) | 32 KB |
| Operating Voltage | 2.0 V to 3.6 V |
| I/O Pins | 21 |
| ADC | 12-bit |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| Boîtier | 28-QFN (6x6 mm) |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40C to +125C (Extended) |
| Low-Power Modes | Sleep, Idle, Deep Sleep (with RTCC) |
| DMA Channels | 4 |
| Statut RoHS | Compliant |
Configuration des broches de PIC32MM0256GPM028-E/ML
| Broche 1 | RA0 — General-purpose I/O / analog input |
| Broche 2 | RA1 — General-purpose I/O / analog input |
| Broche 3 | RA2 — General-purpose I/O / analog input |
| Broche 4 | RA3 — General-purpose I/O / analog input |
| Broche 5 | RA4 — General-purpose I/O |
| Broche 6 | VSS — Ground |
| Broche 7 | VDD — Positive supply voltage |
| Broche 8 | RB0 — General-purpose I/O / programming clock |
| Broche 9 | RB1 — General-purpose I/O / programming data |
| Broche 10 | RB2 — General-purpose I/O |
| Broche 11 | RB3 — General-purpose I/O |
| Broche 12 | RB4 — General-purpose I/O / SDA |
| Broche 13 | RB5 — General-purpose I/O / SCL |
| Broche 14 | RB6 — General-purpose I/O |
| Broche 15 | RB7 — General-purpose I/O |
| Broche 16 | RB8 — General-purpose I/O |
| Broche 17 | RB9 — General-purpose I/O |
| Broche 18 | VSS — Ground |
| Broche 19 | VDD — Positive supply voltage |
| Broche 20 | RC0 — General-purpose I/O |
| Broche 21 | RC1 — General-purpose I/O |
| Broche 22 | RC2 — General-purpose I/O |
| Broche 23 | RC3 — General-purpose I/O |
| Broche 24 | RC4 — General-purpose I/O / USB D- |
| Broche 25 | RC5 — General-purpose I/O / USB D+ |
| Broche 26 | RC6 — General-purpose I/O |
| Broche 27 | VSS — Ground |
| Broche 28 | VDD — Positive supply voltage |
Applications typiques
PIC32MM0256GPM028-E/ML convient pour 6 applications: Low-Power USB Peripherals, IoT Sensor Nodes, Wearable Fitness Devices, HMI Touch Interfaces, Battery-Powered Medical Accessories, Industrial Sensor Hubs.
Low-Power USB Peripherals
The PIC32MM0256GPM028-E/ML is purpose-built for USB peripherals thanks to the on-chip USB 2.0 Full-Speed device/host/OTG controller and 256 KB ECC Flash. The USB stack plus vendor class driver requires roughly 40-60 KB Flash, leaving ample headroom for application logic. The 25 MHz MIPS core is sufficient for HID, CDC, and vendor-class transfers at 12 Mbps. Its eXtreme low-power Sleep modes draw sub-microamp current when the USB bus is suspended, extending battery life in wireless mice, keyboards, and HID dongles. Wide 2.0-3.6V operation accepts direct Li-ion power. Use a 1.5 kohm pull-up on D+ for full-speed detection.
Recommandé
IoT Sensor Nodes
The PIC32MM0256GPM028-E/ML fits IoT sensor nodes that need periodic sampling, ADC conversion, and low-duty-cycle wireless handoff. Its 12-bit ADC with 200 ksps rate handles temperature, pressure, and analog sensor readout; 32 KB SRAM accommodates small sensor-fusion buffers. Deep Sleep current below 1 uA with RTCC wake-up lets a coin-cell node survive years on a single battery. The 256 KB Flash supports LoRaWAN or BLE HCI host stacks plus OTA bootloaders, and ECC mitigates bit-flip risk in outdoor deployments. Low GPIO count (21 pins) suits the compact sensor-node bill of materials.
Recommandé
Wearable Fitness Devices
The PIC32MM0256GPM028-E/ML targets battery-powered wearables such as fitness bands and heart-rate monitors. Its small 28-QFN (6x6 mm) package fits wristband PCBs, while sub-uA Deep Sleep currents preserve multi-day runtime. The 12-bit ADC samples photoplethysmography (PPG) signals for optical heart-rate sensing; 256 KB ECC Flash stores pedometer algorithms plus BLE HCI host code. DMA channels offload sensor buffering, freeing the 25 MHz CPU for display driving and button polling. Extended -40C to +125C temperature grade suits wearables worn during outdoor exercise.
Recommandé
HMI Touch Interfaces
The PIC32MM0256GPM028-E/ML drives small HMI touch panels in appliances, thermostats, and consumer electronics. With 256 KB Flash, the device runs mTouch capacitive-touch libraries plus 7-segment or small TFT display drivers without external memory. The 12-bit ADC reads resistive touch coordinates; hardware CRC and DMA accelerate capacitive-scan firmware. USB capability simplifies firmware updates via USB HID, eliminating programming headers. Its low power profile keeps standby current under 50 uA in always-on appliances, and the 28-QFN footprint suits compact PCB layouts behind glass panels.
Recommandé
Battery-Powered Medical Accessories
The PIC32MM0256GPM028-E/ML suits battery-powered medical accessories such as pulse oximeters, glucose meters, and portable ECG leads where data integrity matters. ECC Flash detects and corrects single-bit errors caused by radiation or voltage transients, improving firmware reliability. The 12-bit ADC at 200 ksps captures biosignal waveforms; 32 KB SRAM holds sample buffers. USB capability enables tethered data download to clinicians. Low-power modes with RTCC allow weeks of standby on a single CR2032 cell. Extended temperature grade supports refrigerated pharmaceutical storage environments.
Recommandé
Industrial Sensor Hubs
The PIC32MM0256GPM028-E/ML functions as an industrial sensor hub aggregating analog/digital signals from multiple sensors. Its 4-channel DMA offloads I2C/SPI sensor polling, freeing the 25 MHz MIPS core for local decision logic. UART, SPI, and I2C peripherals connect multiple sensor types simultaneously; the 12-bit ADC reads 4-20 mA industrial loops with appropriate signal conditioning. ECC Flash improves reliability in electrically noisy factories. Wide 2.0-3.6V input tolerates supply variations; USB allows local configuration via laptop during commissioning. Industrial temperature grade fits outdoor cabinet installations.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC32MM0256GPM028-E/ML — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC32MM0256GPM028-I/ML | PIC32MM0128GPM028T-I/ML | PIC32MM0064GPM028-I/ML | PIC32MM0064GPM028T-I/M6 |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-QFN (6x6) | 28-QFN (6x6) - same | 28-QFN (6x6) - same | 28-QFN (6x6) - same | 28-QFN (6x6) - same |
| Flash Memory | 256 KB | 256 KB | 128 KB (-50%) | 64 KB (-75%) | 64 KB (-75%) |
| SRAM | 32 KB | 32 KB | 16 KB | 8 KB | 8 KB |
| ECC Flash | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| CPU Speed | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| USB | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG |
Principaux différenciateurs
- Extended temperature range (-40C to +125C) (vs PIC32MM0256GPM028-I/ML)
- Larger Flash (256 KB) for complex stacks (vs PIC32MM0064GPM028-I/ML)
- Larger SRAM (32 KB) for sensor buffering (vs PIC32MM0128GPM028T-I/ML)
Notes de conception
The PIC32MM0256GPM028-E/ML accepts 2.0-3.6V on VDD pins (7, 19, 28). Decouple each VDD with a 100 nF X7R ceramic capacitor placed within 3 mm of the pin to suppress switching noise. If the supply is derived from a 5V rail, use an LDO (e.g. MCP1700) to drop to 3.3V. The device has separate analog (VDD) and digital supply rails; on the 28-QFN, AVdd is bonded to VDD, but route the analog traces away from switching nodes. Verify USB VBUS sensing requires 4.4V minimum; an external boost may be needed if VBUS drops below this.
Solder the exposed pad (EP) of the 28-QFN to the ground plane for thermal dissipation; without it, the device derates power handling. Use a 4-layer PCB with continuous ground pour under the QFN, and route USB D+/D- as a 90-ohm differential pair with length matching to within 2 mm. Keep crystal traces short and surround them with ground guard traces. Maintain at least 0.2 mm clearance between analog and digital signal traces to minimize ADC crosstalk.
Do not exceed 3.6V on any I/O pin; the device is not 5V-tolerant. Configure unused I/O as outputs driving low (not high-Z) to minimize current leakage. When entering Deep Sleep, the RTCC requires its own 32.768 kHz crystal or can run from the LPRC; ensure the RTCC clock source is selected before sleep entry or wake-up timing will drift. The ECC Flash bit is enabled by configuration; do not disable ECC in production firmware as it protects against soft errors.
Informations de conformité
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; for automotive applications use AEC-Q100 qualified PIC variants. Lead-free and halogen-free per Microchip material declarations.
