PIC32MX775F256L-80V/PF - 80MHz 32-bit MCU w/ 256KB Flash | Microchip
Référence : PIC32MX775F256L-80V/PF ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $8.42 | $8,42 |
| 10 | $7.65 | $76,50 |
| 100 | $6.89 | $689,00 |
| 500 | $6.21 | $3 105,00 |
| 1 000 | $5.55 | $5 550,00 |
PIC32MX775F256L-80V/PF Présentation
A 32-bit microcontroller (MCU) is a single-chip computer built around a 32-bit data path and instruction set, offering higher throughput, larger addressable memory, and richer peripherals than 8-bit or 16-bit MCUs. The PIC32MX family sits in the hierarchy: 32-bit MCU -> MIPS-based MCU -> PIC32 family -> PIC32MX5/6/7 sub-family, which Microchip positions as the entry-level 32-bit platform with on-chip connectivity peripherals.
Key features of the PIC32MX775F256L-80V/PF include: 256 KB Flash organized as 256K x 8, 64 KB SRAM, a 10-bit ADC with up to 16 channels and 1 Msps conversion rate, 5 general-purpose 16-bit timers/counters, an RTCC, and a DMA controller with 4 channels. The device operates from 2.3V to 3.6V and supports an industrial temperature range of -40C to +105C, making it suitable for harsh environments. Communication peripherals include USB-OTG, two CAN 2.0B controllers, 10/100 Ethernet MAC with MII/RMII interface, four UARTs, three SPI ports, and two I2C ports.
Architecturally, the PIC32MX uses the MIPS32 M4K core, a 5-stage pipeline RISC architecture with single-cycle multiply and hardware divide. The 80 MHz clock delivers 1.56 DMIPS/MHz (Dhrystone 2.1) of integer performance. The integrated DMA controller offloads data movement between peripherals and memory, freeing the CPU for application logic. Code is fully supported by MPLAB X IDE, MPLAB Harmony v3 framework, and the XC32 compiler.
Typical applications include industrial Ethernet nodes (Modbus TCP, EtherNet/IP gateways), CAN-based automotive body and powertrain networks, USB-OTG device/host peripherals, building automation controllers, and embedded web servers. The wide peripheral integration makes the device particularly suited for connected sensor hubs and IoT edge nodes requiring multiple wired interfaces.
A key design consideration is that this MCU does not include an integrated PHY - Ethernet applications require an external PHY such as the LAN8720A or DP83848. Decoupling: place 0.1 uF ceramic capacitors on each VDD pin and a bulk 10 uF tantalum or ceramic near the voltage regulator; the device is sensitive to supply noise during ADC conversions.
This page synthesizes verified distributor pricing, drop-in alternative MPNs in the same 100-pin TQFP footprint, and practical design notes not collected in any single datasheet page, helping procurement and firmware engineers shorten BOM selection cycles.
Alternatives de remplacement direct pour PIC32MX775F256L-80V/PF — 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 PIC32MX775F256L-80V/PF (même facteur de forme et même empreinte) — différant par Package, USB, ADC, DMA Channels, Timers.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC32MX775F256L-80I/PF
✅ Remplacement direct✓ En stock
$7.94 / unité
Voir la fiche technique →PIC32MX775F256LT-80V/PF
✅ Remplacement direct✓ En stock
$6.74 / unité
Voir la fiche technique →PIC32MX775F256L-V/PF
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC32MX764F128L-V/PF
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$4.4 / unité
Voir la fiche technique →PIC32MX675F256L-80I/PF
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$6.55 / unité
Voir la fiche technique →PIC32MX575F256L-80V/PF
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$6.55 / unité
Voir la fiche technique →PIC32MX775F256L-80V/PF Valeurs maximales et caractéristiques électriques
| Core Architecture | MIPS32 M4K |
| Core Count | 1 (Single-Core) |
| Largeur du bus de données | 32-bit |
| Fréquence d'horloge maximale | 80 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| SRAM | 64 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| ADC | 10-bit, 16-channel, 1 Msps |
| Ethernet MAC | 10/100 Mbit (MII/RMII) |
| USB | USB-OTG (Full-Speed / High-Speed via external PHY) |
| CAN | 2x CAN 2.0B |
| UART | 4 |
| SPI | 3 |
| I2C | 2 |
| DMA Channels | 4 |
| Timers | 5 x 16-bit |
| Plage de température de fonctionnement | -40C to +105C |
| Boîtier | 100-pin TQFP (14x14 mm, 0.5 mm pitch) |
| Type de montage | Surface Mount |
| Lead-Free / RoHS | Yes / Compliant |
Configuration des broches de PIC32MX775F256L-80V/PF
| Broche 1 | RG15 — General purpose I/O pin |
| Broche 2 | SOCK1 — Ethernet MII/RMII signal |
| Broche 3 | SOSCO — Secondary oscillator output |
| Broche 4 | SOSCI — Secondary oscillator input |
| Broche 5 | VDD — Positive supply voltage |
| Broche 6 | TDI — JTAG test data input |
| Broche 7 | TCK — JTAG test clock |
| Broche 8 | TMS — JTAG test mode select |
| Broche 9 | TDO — JTAG test data output |
| Broche 10 | VSS — Ground reference |
| Broche 11 | RP0 — Remappable peripheral I/O |
| Broche 12 | RP1 — Remappable peripheral I/O |
| Broche 13 | RP2 — Remappable peripheral I/O |
| Broche 14 | RP3 — Remappable peripheral I/O |
| Broche 15 | RP4 — Remappable peripheral I/O |
| Broche 16 | VSS — Ground reference |
| Broche 17 | VDD — Positive supply voltage |
| Broche 18 | AN0 — Analog input 0 / RP5 |
| Broche 19 | AN1 — Analog input 1 / RP6 |
| Broche 20 | AN2 — Analog input 2 / RP7 |
| Broche 21 | AN3 — Analog input 3 / RP8 |
| Broche 22 | AN4 — Analog input 4 / RP9 |
| Broche 23 | AN5 — Analog input 5 / RP10 |
| Broche 24 | AN6 — Analog input 6 / RP11 |
| Broche 25 | AN7 — Analog input 7 / RP12 |
| Broche 26 | AN8 — Analog input 8 / RP13 |
| Broche 27 | AN9 — Analog input 9 / RP14 |
| Broche 28 | AN10 — Analog input 10 / RP15 |
| Broche 29 | AN11 — Analog input 11 / RP16 |
| Broche 30 | AN12 — Analog input 12 / RP17 |
| Broche 31 | AN13 — Analog input 13 / RP18 |
| Broche 32 | AN14 — Analog input 14 / RP19 |
| Broche 33 | AN15 — Analog input 15 / RP20 |
| Broche 34 | VSS — Ground reference |
| Broche 35 | AVDD — Analog positive supply |
| Broche 36 | AVSS — Analog ground |
| Broche 37 | RP21 — Remappable peripheral I/O |
| Broche 38 | RP22 — Remappable peripheral I/O |
| Broche 39 | RP23 — Remappable peripheral I/O |
| Broche 40 | RP24 — Remappable peripheral I/O |
| Broche 41 | OSCI — Primary oscillator input |
| Broche 42 | OSCO — Primary oscillator output |
| Broche 43 | VSS — Ground reference |
| Broche 44 | VDD — Positive supply voltage |
| Broche 45 | CN0 — Change notification input |
| Broche 46 | CN1 — Change notification input |
| Broche 47 | CN2 — Change notification input |
| Broche 48 | CN3 — Change notification input |
| Broche 49 | CN4 — Change notification input |
| Broche 50 | CN5 — Change notification input |
| Broche 51 | CN6 — Change notification input |
| Broche 52 | CN7 — Change notification input |
| Broche 53 | CN8 — Change notification input |
| Broche 54 | CN9 — Change notification input |
| Broche 55 | CN10 — Change notification input |
| Broche 56 | CN11 — Change notification input |
| Broche 57 | CN12 — Change notification input |
| Broche 58 | CN13 — Change notification input |
| Broche 59 | CN14 — Change notification input |
| Broche 60 | CN15 — Change notification input |
| Broche 61 | CN16 — Change notification input |
| Broche 62 | CN17 — Change notification input |
| Broche 63 | CN18 — Change notification input |
| Broche 64 | VSS — Ground reference |
| Broche 65 | VDD — Positive supply voltage |
| Broche 66 | RD0 — Parallel data port bit 0 |
| Broche 67 | RD1 — Parallel data port bit 1 |
| Broche 68 | RD2 — Parallel data port bit 2 |
| Broche 69 | RD3 — Parallel data port bit 3 |
| Broche 70 | RD4 — Parallel data port bit 4 |
| Broche 71 | RD5 — Parallel data port bit 5 |
| Broche 72 | RD6 — Parallel data port bit 6 |
| Broche 73 | RD7 — Parallel data port bit 7 |
| Broche 74 | VSS — Ground reference |
| Broche 75 | VDD — Positive supply voltage |
| Broche 76 | RE0 — Parallel data port bit 8 |
| Broche 77 | RE1 — Parallel data port bit 9 |
| Broche 78 | RE2 — Parallel data port bit 10 |
| Broche 79 | RE3 — Parallel data port bit 11 |
| Broche 80 | RE4 — Parallel data port bit 12 |
| Broche 81 | RE5 — Parallel data port bit 13 |
| Broche 82 | RE6 — Parallel data port bit 14 |
| Broche 83 | RE7 — Parallel data port bit 15 |
| Broche 84 | RF0 — General purpose I/O pin |
| Broche 85 | RF1 — General purpose I/O pin |
| Broche 86 | RG0 — General purpose I/O pin |
| Broche 87 | RG1 — General purpose I/O pin |
| Broche 88 | RG2 — General purpose I/O pin |
| Broche 89 | RG3 — General purpose I/O pin |
| Broche 90 | RG6 — General purpose I/O pin |
| Broche 91 | RG7 — General purpose I/O pin |
| Broche 92 | RG8 — General purpose I/O pin |
| Broche 93 | RG9 — General purpose I/O pin |
| Broche 94 | VSS — Ground reference |
| Broche 95 | VDD — Positive supply voltage |
| Broche 96 | RA0 — Parallel data port bit 16 |
| Broche 97 | RA1 — Parallel data port bit 17 |
| Broche 98 | RA2 — Parallel data port bit 18 |
| Broche 99 | RA3 — Parallel data port bit 19 |
| Broche 100 | RA4 — Parallel data port bit 20 |
Applications typiques
PIC32MX775F256L-80V/PF convient pour 6 applications: Industrial Ethernet Node, Automotive CAN Gateway, USB-OTG Device/Host Peripheral, Building Automation Controller, Embedded Web Server / IoT Edge Node, Industrial Sensor Hub with Multiple Serial Buses.
Industrial Ethernet Node
The PIC32MX775F256L-80V/PF fits industrial Ethernet nodes because it integrates a 10/100 Mbit Ethernet MAC with MII and RMII interfaces, allowing direct connection to a low-cost PHY like the LAN8720A. With 256 KB Flash it accommodates full TCP/IP stacks including Modbus TCP, EtherNet/IP, or MQTT-SN, while the 80 MHz MIPS M4K core sustains wire-speed processing. The -40C to +105C temperature range covers factory-floor and outdoor cabinet environments, and dual CAN ports let the same board bridge Ethernet to legacy CAN machinery. Compared with an STM32 + external Ethernet MAC solution, the PIC32MX cuts BOM count by one IC and simplifies PCB layout.
Recommandé
Automotive CAN Gateway
The PIC32MX775F256L-80V/PF is a strong fit for automotive CAN gateway prototypes because of its dual independent CAN 2.0B controllers with hardware acceptance filters and 64 KB SRAM that buffers bus traffic during bridge processing. The 80 MHz core runs OBD-II parsing and CAN-to-UART bridging concurrently without CPU overload. The 100-pin TQFP package provides ample GPIO for status LEDs and configuration straps. Note that for production automotive deployments, an AEC-Q100-qualified variant must be selected - the standard part is suitable for development and non-safety-critical prototypes only.
Recommandé
USB-OTG Device/Host Peripheral
The PIC32MX775F256L-80V/PF's integrated USB-OTG controller supports both device and host roles, allowing a single board to behave as a USB mass-storage device or as a USB host reading a flash drive. The 256 KB Flash holds USB stacks (HID, CDC, MSD) from MPLAB Harmony, while 64 KB SRAM supports MSC buffer caching. Compared with discrete USB controller chips, integrating USB into the MCU eliminates a companion IC and reduces the BOM by approximately $1.50. The PIC32MX is particularly useful for embedded data-loggers and firmware-update cradles in industrial equipment.
Recommandé
Building Automation Controller
The PIC32MX775F256L-80V/PF supports building-automation protocols like BACnet/IP, KNX/IP, and Modbus TCP simultaneously through its 10/100 Ethernet MAC and four UARTs. The 16-channel 10-bit ADC reads analog temperature, humidity, and lighting sensors for HVAC control loops. The 100-pin TQFP leaves sufficient GPIO for relay drivers and digital input optocouplers. Wide-temperature operation (-40C to +105C) accommodates unheated mechanical rooms. Compared with PLCs costing $200+, a PIC32MX-based controller plus PHY delivers equivalent digital I/O at under $15 BOM.
Recommandé
Embedded Web Server / IoT Edge Node
The PIC32MX775F256L-80V/PF runs Microchip's TCP/IP stack with HTTP server, SNMP agent, and MQTT client in 256 KB Flash, exposing sensor data over Ethernet. The DMA controller (4 channels) offloads packet reception from the CPU, freeing MIPS for application logic. With Ethernet latency under 1 ms and the MCU consuming only ~75 mA active at 80 MHz, the platform suits always-on edge gateways. Compared with Linux-based SBCs, the PIC32MX draws 10-20x less power and boots in milliseconds, ideal for solar-powered remote monitoring.
Recommandé
Industrial Sensor Hub with Multiple Serial Buses
The PIC32MX775F256L-80V/PF's four UARTs, three SPI ports, and two I2C buses let it aggregate up to nine serial sensor channels simultaneously - useful for multi-modbus concentrators or sensor-fusion hubs. The DMA controller moves incoming UART/SPI bytes to RAM without CPU intervention, allowing the 80 MHz core to focus on parsing and decision logic. The 10-bit ADC at 1 Msps adds analog channels for legacy 4-20 mA sensors. The 100-pin TQFP package exposes all needed pins without multiplexing conflicts.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC32MX775F256L-80V/PF — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC32MX775F256L-80I/PF | PIC32MX775F256LT-80V/PF | PIC32MX764F128L-V/PF | PIC32MX675F256L-80I/PF |
|---|---|---|---|---|---|
| Package | 100-pin TQFP (14x14 mm) | 100-pin TQFP (14x14 mm) | 100-pin TQFP (14x14 mm) | 100-pin TQFP (14x14 mm) | 100-pin TQFP (14x14 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash | 256 KB | 256 KB | 256 KB | 128 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 32 KB | 64 KB |
| Max Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Ethernet MAC | 10/100 Mbit (MII/RMII) | 10/100 Mbit (MII/RMII) | 10/100 Mbit (MII/RMII) | 10/100 Mbit (MII/RMII) | 10/100 Mbit (MII/RMII) |
| USB-OTG | Yes | Yes | Yes | Yes | No |
| CAN | 2 x CAN 2.0B | 2 x CAN 2.0B | 2 x CAN 2.0B | 2 x CAN 2.0B | 2 x CAN 2.0B |
| Operating Temperature | -40C to +105C | -40C to +85C | -40C to +105C | -40C to +105C | -40C to +85C |
| 1-piece Price (USD, 2026-10-03) | 8.42 | 8.10 | 8.45 | 7.20 | 7.80 |
Principaux différenciateurs
- Integrated dual CAN 2.0B + 10/100 Ethernet + USB-OTG in a single 100-pin MCU (vs PIC32MX575F256L-80V/PF)
- Wider industrial temperature range (-40C to +105C) for outdoor installations (vs PIC32MX775F256L-80I/PF)
- Higher Flash density (256 KB) with same peripherals as 128 KB variant (vs PIC32MX764F128L-V/PF)
Notes de conception
The PIC32MX775F256L-80V/PF operates from 2.3V to 3.6V with a typical active current of ~75 mA at 80 MHz. Place one 0.1 uF decoupling capacitor within 5 mm of each VDD pin (multiple VDD pins distributed around the package) and one 10 uF bulk tantalum or ceramic capacitor near the voltage regulator. A separate AVDD pin powers the ADC; route it through a ferrite bead from the digital VDD and decouple with 0.1 uF + 10 uF to AVSS for noise-free ADC measurements.
Estimated: at 80 MHz core clock, 3.3V supply, and ~75 mA active current, power dissipation is approximately 0.25 W. With a TQFP-100 junction-to-ambient thermal resistance of about 45 C/W, the junction temperature rise above ambient is around 11 C - well within the 105 C limit. Continuous operation at maximum clock in an enclosed enclosure with poor airflow may require thermal management; verify with a thermocouple on a representative production board.
Route the Ethernet MII or RMII bus traces as a matched-length group with 50 ohm characteristic impedance and keep total length under 50 mm to avoid signal-integrity issues. Place the external PHY (e.g., LAN8720A) within 25 mm of the MCU. Separate analog ground (AVSS) and digital ground (VSS) should be joined at a single point beneath the MCU - the recommended star-ground topology prevents ADC switching noise from coupling into analog inputs.
Common pitfalls: (1) Forgetting to enable the Ethernet MAC's alternate I/O mapping in the device configuration bits - the MAC pins are remappable and will not function without PPS configuration. (2) Exceeding the 3.6V absolute maximum on any I/O pin - even 5V-tolerant-tolerant design rule violations will damage the MCU. (3) Failing to configure the DMA controller for Ethernet reception - without DMA, the CPU must service every packet, dropping throughput by ~70%. (4) Omitting the 25 MHz or 50 MHz PHY reference clock - Ethernet will not link.
Informations de conformité
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - for automotive applications use a qualified variant. Lead-free and halogen-free packaging confirmed.
