PIC32MX250F256L-I/PF - 32-bit MCU 256KB Flash 50MHz 100-TQFP | Microchip
Teilenummer: PIC32MX250F256L-I/PF ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $6.42 | $6,42 |
| 10 | $5.78 | $57,80 |
| 100 | $5.15 | $515,00 |
| 500 | $4.62 | $2.310,00 |
| 1.000 | $4.1 | $4.100,00 |
PIC32MX250F256L-I/PF Übersicht
A 32-bit microcontroller (MCU) is a single-chip processor that integrates a CPU core, Flash program memory, SRAM data memory, and a rich set of peripherals (ADC, timers, communication controllers) into one package. Within the broader taxonomy, PIC32MX parts sit in the microcontroller -> embedded processor -> semiconductor hierarchy, and they target applications that need more performance and memory than 8/16-bit MCUs while retaining easy C-language development with the MPLAB X IDE and Harmony framework. The PIC32MX250 series specifically targets cost-sensitive embedded control and USB-connected designs.
Key differentiating features of this part include the on-chip Full-Speed USB 2.0 OTG controller (rare in 50 MHz class MCUs), Peripheral Pin Select (PPS) that remaps digital peripherals to any I/O pin for layout flexibility, and CTMU (Charge Time Measurement Unit) for capacitive touch and time-of-flight measurements. The device offers 78 I/O pins, five 16-bit timers, and a real-time clock/calendar with separate 32 kHz oscillator input. The integrated PMP module drives graphical LCDs directly, eliminating external display controllers in many designs.
Architecturally, the PIC32MX250 uses a Harvard-style M4K core with separate instruction and data paths, single-cycle hardware multiply, and a zero-overhead hardware loop counter. The instruction set is MIPS32-compatible, supported by MPLAB XC32 compiler and Harmony middleware. The device operates from 2.3V to 3.6V with five power modes (Run, Idle, Sleep, Deep Sleep, and VBAT) for battery-friendly designs. Industrial temperature grade (-40C to +85C) is suffix-coded by the "/I" designator.
Typical applications include USB peripherals (HID, CDC, MSD), graphical HMI panels using PMP-driven LCDs, capacitive touch human-machine interfaces (CTMU-based), industrial sensor hubs with USB diagnostics, low-cost dataloggers, and consumer audio with I2S codecs. The 256KB Flash accommodates USB stacks (HID + CDC + MSD) plus application code. The PMP + I2S + USB combination makes this device a strong fit for low-cost multimedia HMI designs.
Drop-in-Alternativen für PIC32MX250F256L-I/PF – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC32MX250F256L-I/PF (gleiche Bauform und Footprint) – abweichend in ADC, Package, USB, Core Architecture, Parallel Master Port (PMP).
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC32MX250F256L-50I/PF
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
PIC32MX230F256L-I/PF
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
PIC32MX170F512L-I/PF
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$6.45 / Stück
Datenblatt ansehen →PIC32MX150F256L-I/PF
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
PIC32MX250F256L-V/PF
✅ Drop-In✓ Auf Lager
$3.4 / Stück
Datenblatt ansehen →PIC32MX270F256L-I/PF
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
PIC32MX250F256L-I/PF Grenzwerte & elektrische Eigenschaften
| Core | MIPS32 M4K 32-bit RISC |
| Maximale Taktfrequenz | 50 MHz (83 DMIPS) |
| Program Memory (Flash) | 256 KB |
| Data Memory (SRAM) | 32 KB |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| Betriebstemperaturbereich | -40 C to +85 C (Industrial) |
| Gehäuse | 100-pin TQFP (14x14 mm) |
| I/O Pins | 78 |
| USB | USB 2.0 Full-Speed On-The-Go (OTG) |
| SPI / I2S Modules | 4 (configurable SPI or I2S) |
| I2C Modules | 2 |
| UART Modules | 4 |
| ADC | 10-bit, up to 48 channels, 1 Msps |
| Timers | 5 x 16-bit |
| Parallel Master Port (PMP) | Yes, with dual read/write buffers |
| Peripheral Pin Select (PPS) | Yes |
| CTMU | Yes (Charge Time Measurement Unit) |
| Real-Time Clock / Calendar | Yes, with separate 32 kHz oscillator |
| Montageart | Surface Mount |
| RoHS-Status | Compliant |
PIC32MX250F256L-I/PF Pin-Konfiguration
| Pin 1 | RG15 — General purpose I/O (Port G bit 15) |
| Pin 2 | VDD — Core logic supply voltage (2.3V-3.6V) |
| Pin 3 | VDD — Core logic supply voltage (2.3V-3.6V) |
| Pin 4 | VSS — Ground reference |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RD0 — General purpose I/O (Port D bit 0) |
| Pin 7 | RD1 — General purpose I/O (Port D bit 1) |
| Pin 8 | RD2 — General purpose I/O (Port D bit 2) |
| Pin 9 | RD3 — General purpose I/O (Port D bit 3) |
| Pin 10 | RD4 — General purpose I/O (Port D bit 4) |
| Pin 11 | RD5 — General purpose I/O (Port D bit 5) |
| Pin 12 | RD6 — General purpose I/O (Port D bit 6) |
| Pin 13 | RD7 — General purpose I/O (Port D bit 7) |
| Pin 14 | RC1 — General purpose I/O (Port C bit 1) |
| Pin 15 | RC2 — General purpose I/O (Port C bit 2) |
| Pin 16 | RC3 — General purpose I/O (Port C bit 3) |
| Pin 17 | RC4 — General purpose I/O (Port C bit 4) |
| Pin 18 | AVDD — Analog supply voltage |
| Pin 19 | AVSS — Analog ground reference |
| Pin 20 | VREF+ — ADC positive voltage reference |
| Pin 21 | VREF- — ADC negative voltage reference |
| Pin 22 | AN0 — Analog input channel 0 |
| Pin 23 | AN1 — Analog input channel 1 |
| Pin 24 | AN2 — Analog input channel 2 |
| Pin 25 | AN3 — Analog input channel 3 |
| Pin 26 | AN4 — Analog input channel 4 |
| Pin 27 | AN5 — Analog input channel 5 |
| Pin 28 | AN6 — Analog input channel 6 |
| Pin 29 | AN7 — Analog input channel 7 |
| Pin 30 | AVDD — Analog supply voltage |
| Pin 31 | AVSS — Analog ground reference |
| Pin 32 | AN8 — Analog input channel 8 |
| Pin 33 | AN9 — Analog input channel 9 |
| Pin 34 | AN10 — Analog input channel 10 |
| Pin 35 | AN11 — Analog input channel 11 |
| Pin 36 | AN12 — Analog input channel 12 |
| Pin 37 | AN13 — Analog input channel 13 |
| Pin 38 | AN14 — Analog input channel 14 |
| Pin 39 | AN15 — Analog input channel 15 |
| Pin 40 | VDD — Core logic supply voltage (2.3V-3.6V) |
| Pin 41 | VSS — Ground reference |
| Pin 42 | OSC1 — Primary oscillator input |
| Pin 43 | OSC2 — Primary oscillator output |
| Pin 44 | SOSCO — Secondary oscillator (32 kHz) output |
| Pin 45 | SOSCI — Secondary oscillator (32 kHz) input |
| Pin 46 | RB0 — General purpose I/O (Port B bit 0) |
| Pin 47 | RB1 — General purpose I/O (Port B bit 1) |
| Pin 48 | RB2 — General purpose I/O (Port B bit 2) |
| Pin 49 | RB3 — General purpose I/O (Port B bit 3) |
| Pin 50 | RB4 — General purpose I/O (Port B bit 4) |
| Pin 51 | RB5 — General purpose I/O (Port B bit 5) |
| Pin 52 | RB6 — General purpose I/O (Port B bit 6, ICDCLK) |
| Pin 53 | RB7 — General purpose I/O (Port B bit 7, ICDDATA) |
| Pin 54 | RB8 — General purpose I/O (Port B bit 8) |
| Pin 55 | RB9 — General purpose I/O (Port B bit 9) |
| Pin 56 | RB10 — General purpose I/O (Port B bit 10) |
| Pin 57 | RB11 — General purpose I/O (Port B bit 11) |
| Pin 58 | RB12 — General purpose I/O (Port B bit 12) |
| Pin 59 | RB13 — General purpose I/O (Port B bit 13) |
| Pin 60 | RB14 — General purpose I/O (Port B bit 14) |
| Pin 61 | RB15 — General purpose I/O (Port B bit 15) |
| Pin 62 | VDD — Core logic supply voltage (2.3V-3.6V) |
| Pin 63 | VSS — Ground reference |
| Pin 64 | RC12 — General purpose I/O (Port C bit 12) |
| Pin 65 | RC13 — General purpose I/O (Port C bit 13) |
| Pin 66 | RC14 — General purpose I/O (Port C bit 14) |
| Pin 67 | RC15 — General purpose I/O (Port C bit 15) |
| Pin 68 | RD8 — General purpose I/O (Port D bit 8) |
| Pin 69 | RD9 — General purpose I/O (Port D bit 9) |
| Pin 70 | RD10 — General purpose I/O (Port D bit 10) |
| Pin 71 | RD11 — General purpose I/O (Port D bit 11) |
| Pin 72 | RD12 — General purpose I/O (Port D bit 12) |
| Pin 73 | RD13 — General purpose I/O (Port D bit 13) |
| Pin 74 | RD14 — General purpose I/O (Port D bit 14) |
| Pin 75 | RD15 — General purpose I/O (Port D bit 15) |
| Pin 76 | VUSB3V3 — USB transceiver 3.3V supply |
| Pin 77 | VSS — Ground reference |
| Pin 78 | D+ — USB D+ data line |
| Pin 79 | D- — USB D- data line |
| Pin 80 | VBUS — USB VBUS sensing pin |
| Pin 81 | VSS — Ground reference |
| Pin 82 | RG6 — General purpose I/O (Port G bit 6) |
| Pin 83 | RG7 — General purpose I/O (Port G bit 7) |
| Pin 84 | RG8 — General purpose I/O (Port G bit 8) |
| Pin 85 | RG9 — General purpose I/O (Port G bit 9) |
| Pin 86 | MCLR — Master Clear (active-low reset input) |
| Pin 87 | RE0 — General purpose I/O (Port E bit 0) |
| Pin 88 | RE1 — General purpose I/O (Port E bit 1) |
| Pin 89 | RE2 — General purpose I/O (Port E bit 2) |
| Pin 90 | RE3 — General purpose I/O (Port E bit 3) |
| Pin 91 | RE4 — General purpose I/O (Port E bit 4) |
| Pin 92 | RE5 — General purpose I/O (Port E bit 5) |
| Pin 93 | RE6 — General purpose I/O (Port E bit 6) |
| Pin 94 | RE7 — General purpose I/O (Port E bit 7) |
| Pin 95 | RF0 — General purpose I/O (Port F bit 0) |
| Pin 96 | RF1 — General purpose I/O (Port F bit 1) |
| Pin 97 | RF2 — General purpose I/O (Port F bit 2) |
| Pin 98 | RF3 — General purpose I/O (Port F bit 3) |
| Pin 99 | RF4 — General purpose I/O (Port F bit 4) |
| Pin 100 | RF5 — General purpose I/O (Port F bit 5) |
Typische Anwendungen
PIC32MX250F256L-I/PF ist geeignet für 6 Anwendungs: USB HID Peripheral Device, Graphical LCD HMI Panel, Capacitive Touch Interface, Industrial Sensor Hub with USB Diagnostics, USB Audio Device (USB-to-I2S Bridge), Portable Data Logger.
USB HID Peripheral Device
The PIC32MX250F256L-I/PF's integrated USB 2.0 Full-Speed OTG controller and 256KB Flash make it ideal for USB HID peripherals (keyboards, mice, custom input devices, barcode scanners). The on-chip OTG controller handles enumeration, endpoint management, and SOF timing in hardware, freeing the MIPS M4K core for application logic. The 256KB Flash accommodates the Microchip USB HID stack (MLA or Harmony), while 32KB SRAM supports HID report buffers and protocol state. Engineers gain a single-chip USB solution with no external PHY, reducing BOM cost and PCB area versus discrete USB interface MCUs.
Empfohlen
Graphical LCD HMI Panel
The Parallel Master Port (PMP) on the PIC32MX250F256L-I/PF drives graphical LCDs directly with dual read/write buffers, eliminating external display controllers. Combined with up to 78 I/O pins via Peripheral Pin Select (PPS) and four SPI/I2S modules, the MCU can drive a TFT panel while simultaneously reading touch controllers, scanning keypads, and playing I2S audio. The 50 MHz core pumps pixel data at typical 320x240x16bpp refresh rates. The CTMU handles touch-screen resistive sensing without extra components.
Empfohlen
Capacitive Touch Interface
The PIC32MX250F256L-I/PF's on-chip CTMU (Charge Time Measurement Unit) enables robust capacitive touch sensing for buttons, sliders, and proximity detection without dedicated touch ICs. The CTMU charges a capacitive sense pad with a known current and measures discharge time via the ADC, achieving sub-10 pF resolution. Combined with the 1 Msps 10-bit ADC and 78 I/O pins, the MCU can manage 20+ touch electrodes while running UI logic on the 50 MHz M4K core.
Empfohlen
Industrial Sensor Hub with USB Diagnostics
The PIC32MX250F256L-I/PF integrates industrial-grade ADC (1 Msps, 10-bit, 48 channels), USB diagnostics port, and RS-232/485 UARTs into a single chip for factory-floor sensor aggregation. The 4-wire UART set supports Modbus RTU master/slave on RS-485 buses while USB exposes a CDC virtual COM port for configuration and data log download. The -40C to +85C industrial temperature grade and 2.3-3.6V supply handle typical 24V-sensor-bus-derived rails via local regulation.
Empfohlen
USB Audio Device (USB-to-I2S Bridge)
With its four SPI/I2S modules and USB Full-Speed controller, the PIC32MX250F256L-I/PF can implement a USB-to-I2S audio bridge for headphone DACs, USB speakers, and USB microphones. The 50 MHz core handles USB isochronous audio packets at 48 kHz / 24-bit while feeding I2S data to an external DAC with sub-millisecond latency. The 256KB Flash stores USB Audio Class 1.0 / 2.0 firmware and a small DSP pre-processing layer.
Empfohlen
Portable Data Logger
The PIC32MX250F256L-I/PF's five low-power modes (Run, Idle, Sleep, Deep Sleep, VBAT), 32KB SRAM, and 256KB Flash make it a fit for battery-powered data loggers that periodically wake, sample sensors, and store to external SPI Flash or SD cards via the four SPI/I2S modules. Real-Time Clock/Calendar with separate 32 kHz oscillator input enables accurate timestamping. USB OTG allows easy data offload to a PC without removing the storage card.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC32MX250F256L-I/PF – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC32MX250F256L-50I/PF | PIC32MX230F256L-I/PF | PIC32MX170F512L-I/PF | PIC32MX150F256L-I/PF | PIC32MX250F256L-V/PF | PIC32MX270F256L-I/PF |
|---|---|---|---|---|---|---|---|
| Package | 100-pin TQFP (14x14 mm) | 100-pin TQFP - same | 100-pin TQFP - same | 100-pin TQFP - same | 100-pin TQFP - same | 100-pin TQFP - same | 100-pin TQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 256 KB | 256 KB | 256 KB | 512 KB (+100%) | 256 KB | 256 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 64 KB (+100%) | 32 KB | 32 KB | 32 KB |
| Max Frequency | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| USB Controller | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | No USB | No USB | USB 2.0 FS OTG | USB 2.0 FS OTG |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +105C (Extended) | -40C to +85C |
| CAN Bus | No | No | No | No | No | No | Yes (1x CAN) |
Wichtigste Unterscheidungsmerkmale
- On-chip USB 2.0 Full-Speed OTG controller with no external PHY required (vs. PIC32MX150F256L-I/PF)
- Parallel Master Port (PMP) with dual read/write buffers for direct LCD driving (vs. PIC32MX170F512L-I/PF)
- Integrated CTMU for capacitive touch sensing without dedicated touch IC (vs. STM32F103C8T6)
Designhinweise
The PIC32MX250F256L-I/PF requires careful power decoupling: place a 100 nF ceramic capacitor as close as possible to each VDD/AVDD pin pair, plus a single 10 uF bulk capacitor on each power rail. The VUSB3V3 pin must be tied to the same 3.3V supply as VDD, with its own 100 nF bypass capacitor, since USB transceiver signalling is sensitive to supply noise above 50 mV peak-to-peak.
Route the 50 MHz system clock traces with controlled impedance (50 ohm characteristic impedance for point-to-point) and keep them under 25 mm length. The 48 MHz USB clock source (crystal or external oscillator) must be routed away from switching nodes and have a grounded guard trace on both sides to avoid coupling into USB signalling. Place the USB D+/D- traces as a 90-ohm differential pair with matched lengths to within 150 mil.
The Configuration Words (DEVCFG0/1/2/3) must be set correctly before code execution: enable JTAG disabled for production (or leave enabled for debug), set the primary oscillator mode (HS, XT, EC), enable or disable the secondary 32 kHz oscillator for RTCC, and configure the watchdog timer. Forgetting to configure the watchdog or leaving it in default-on state will cause unexpected resets. Also note that Peripheral Pin Select (PPS) mappings must be unlocked via PPSLOCK before each configuration write.
At 50 MHz, the PIC32MX250F256L-I/PF draws approximately 20-25 mA typical, with peak currents up to 35 mA during USB packet transmission. The 100-pin TQFP package has thermal resistance theta_JA of approximately 35 C/W (4-layer PCB with ground plane). The junction temperature stays well within the 125 C max at industrial temperatures, but a continuous copper pour under the exposed pad region (TQFP-100 has no exposed pad - use a 1 square inch ground pour on the top layer instead) further reduces thermal resistance.
Compliance-Informationen
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified (use PIC32MX ZMX variants for automotive). Lead-free and halogen-free per Microchip Material Composition Declaration. Conflict minerals compliant per Microchip policy.
