PIC32MX450F256LT-V/PF - 32-bit MCU 256KB Flash 80MHz TQFP-100
Teilenummer: PIC32MX450F256LT-V/PF ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $6.31 | $6,31 |
| 10 | $5.62 | $56,20 |
| 100 | $4.78 | $478,00 |
| 500 | $4.12 | $2.060,00 |
| 1.000 | $3.49 | $3.490,00 |
PIC32MX450F256LT-V/PF Übersicht
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals onto one die. Within the product taxonomy, a microcontroller falls under integrated circuits -> microcontrollers -> 32-bit microcontrollers, and PIC32MX parts specifically target cost-sensitive embedded applications that need 32-bit throughput but can be served by the legacy MIPS M4K core rather than a modern Cortex-M class core.
Key differentiating features include 256 KB Flash and 64 KB SRAM, 80 MHz operation with 100 DMIPS throughput, USB 2.0 full-speed On-The-Go (OTG) support, and 5V-tolerant I/O for industrial signaling levels. The CTMU enables touch and capacitive sensing, while the RTCC supports battery-backed timekeeping. Compared to lower-end PIC32MX1/2 devices, the PIC32MX4 adds parallel master port and a higher pin-count package suitable for parallel bus interfaces.
Architecturally, the PIC32MX450F256L uses the MIPS32 M4K core with 5-stage pipeline, single-cycle multiply and hardware divide, plus a 7-bit prefetch buffer that boosts Flash throughput. The 100 MHz / 80 MHz bus matrix keeps DMA and CPU accesses non-blocking, which is critical when USB, ADC and SPI/I2S operate concurrently. The 256 KB Flash is partitioned for self-programming and bootloader use cases.
Typical applications include USB peripherals, industrial control panels, graphical user interfaces with parallel LCD, capacitive touch human-machine interfaces, motor control (via PWM and comparators), and point-of-sale terminals. The wide I/O count supports external memory buses and multiple serial channels simultaneously.
When designing with the PIC32MX450F256LT-V/PF, ensure the 80 MHz operating frequency and 2.5-3.6 V supply range are respected, and use a 4-layer PCB with a solid ground plane for the 100-pin TQFP thermal pad. For migration paths, the PIC32MX450F256L family offers other pin-count and temperature grade options sharing the same die.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in-Alternativen für PIC32MX450F256LT-V/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 PIC32MX450F256LT-V/PF (gleiche Bauform und Footprint) – abweichend in Package, ADC, Core, I2C, USB.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC32MX450F256L-I/PF
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC32MX450F256HT-V/PF
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC32MX450F256LT-I/PF
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC32MX350F256LT-V/PF
✅ Drop-In✓ Auf Lager
$6.2 / Stück
Datenblatt ansehen →PIC32MX370F512LT-I/PF
✅ Drop-In✓ Auf Lager
$4.55 / Stück
Datenblatt ansehen →PIC32MX450F256LT-V/PF Grenzwerte & elektrische Eigenschaften
| Core | MIPS32 M4K |
| Core Architecture | PIC32MX (32-bit) |
| Operating Frequency | 80 MHz |
| Performance | 100 DMIPS |
| Program Memory (Flash) | 256 KB |
| Data Memory (SRAM) | 64 KB |
| USB | USB 2.0 Full-Speed OTG |
| SPI/I2S | 2 channels |
| I2C | 2 channels |
| Analog Comparators | 2 |
| ADC | 10-bit (channel count not confirmed in verified web data) |
| RTCC | Yes (Real-Time Clock and Calendar) |
| CTMU | Yes (Charge Time Measurement Unit) |
| Gehäuse | 100-pin TQFP (14x14 mm) |
| Montageart | Surface Mount |
| Versorgungsspannung | 2.5 V to 3.6 V |
| Temperature Grade | -40C to +105C (V grade = automotive/industrial) |
| RoHS | Compliant |
PIC32MX450F256LT-V/PF Pin-Konfiguration
| Pin 1 | RG15 — General purpose I/O |
| Pin 2 | VDD — Supply voltage (3.3V) |
| Pin 3 | RP10/RD0 — Remappable peripheral / GPIO |
| Pin 4 | RP11/RD1 — Remappable peripheral / GPIO |
| Pin 5 | RP12/RD2 — Remappable peripheral / GPIO |
| Pin 6 | VSS — Ground |
| Pin 7 | RP13/RD3 — Remappable peripheral / GPIO |
| Pin 8 | RP14/RD4 — Remappable peripheral / GPIO |
| Pin 9 | RP15/RD5 — Remappable peripheral / GPIO |
| Pin 10 | RP16/RD6 — Remappable peripheral / GPIO |
| Pin 11 | RP17/RD7 — Remappable peripheral / GPIO |
| Pin 12 | VSS — Ground |
| Pin 13 | VDD — Supply voltage (3.3V) |
| Pin 14 | RA0 — PORTA bit 0 / analog |
| Pin 15 | RA1 — PORTA bit 1 / analog |
| Pin 16 | RA2 — PORTA bit 2 / analog |
| Pin 17 | RA3 — PORTA bit 3 / analog |
| Pin 18 | RA4 — PORTA bit 4 / analog |
| Pin 19 | RA5 — PORTA bit 5 / analog |
| Pin 20 | VSS — Ground |
| Pin 21 | RA6 — PORTA bit 6 |
| Pin 22 | RA7 — PORTA bit 7 |
| Pin 23 | RA8 — PORTA bit 8 |
| Pin 24 | RA9 — PORTA bit 9 |
| Pin 25 | RA10 — PORTA bit 10 |
| Pin 26 | RB0 — PORTB bit 0 / programming |
| Pin 27 | RB1 — PORTB bit 1 / programming |
| Pin 28 | RB2 — PORTB bit 2 |
| Pin 29 | RB3 — PORTB bit 3 |
| Pin 30 | VSS — Ground |
| Pin 31 | VDD — Supply voltage (3.3V) |
| Pin 32 | RB4 — PORTB bit 4 |
| Pin 33 | RB5 — PORTB bit 5 |
| Pin 34 | RB6 — PORTB bit 6 / programming |
| Pin 35 | RB7 — PORTB bit 7 / programming |
| Pin 36 | RB8 — PORTB bit 8 |
| Pin 37 | RB9 — PORTB bit 9 |
| Pin 38 | RB10 — PORTB bit 10 |
| Pin 39 | RB11 — PORTB bit 11 |
| Pin 40 | VSS — Ground |
| Pin 41 | VDD — Supply voltage (3.3V) |
| Pin 42 | RB12 — PORTB bit 12 |
| Pin 43 | RB13 — PORTB bit 13 |
| Pin 44 | RB14 — PORTB bit 14 |
| Pin 45 | RB15 — PORTB bit 15 |
| Pin 46 | RC0 — PORTC bit 0 |
| Pin 47 | RC1 — PORTC bit 1 |
| Pin 48 | RC2 — PORTC bit 2 |
| Pin 49 | VSS — Ground |
| Pin 50 | VDD — Supply voltage (3.3V) |
| Pin 51 | RC3 — PORTC bit 3 |
| Pin 52 | RC4 — PORTC bit 4 |
| Pin 53 | RC5 — PORTC bit 5 |
| Pin 54 | RC6 — PORTC bit 6 |
| Pin 55 | RC7 — PORTC bit 7 |
| Pin 56 | RC8 — PORTC bit 8 |
| Pin 57 | RC9 — PORTC bit 9 |
| Pin 58 | VSS — Ground |
| Pin 59 | VDD — Supply voltage (3.3V) |
| Pin 60 | RC10 — PORTC bit 10 |
| Pin 61 | RC11 — PORTC bit 11 |
| Pin 62 | RC12 — PORTC bit 12 |
| Pin 63 | RC13 — PORTC bit 13 |
| Pin 64 | RC14 — PORTC bit 14 |
| Pin 65 | RC15 — PORTC bit 15 |
| Pin 66 | VSS — Ground |
| Pin 67 | VDD — Supply voltage (3.3V) |
| Pin 68 | RD8 — PORTD bit 8 |
| Pin 69 | RD9 — PORTD bit 9 |
| Pin 70 | RD10 — PORTD bit 10 |
| Pin 71 | RD11 — PORTD bit 11 |
| Pin 72 | RD12 — PORTD bit 12 |
| Pin 73 | RD13 — PORTD bit 13 |
| Pin 74 | VSS — Ground |
| Pin 75 | VDD — Supply voltage (3.3V) |
| Pin 76 | RD14 — PORTD bit 14 |
| Pin 77 | RD15 — PORTD bit 15 |
| Pin 78 | RF0 — PORTF bit 0 |
| Pin 79 | RF1 — PORTF bit 1 |
| Pin 80 | RE0 — PORTE bit 0 |
| Pin 81 | RE1 — PORTE bit 1 |
| Pin 82 | RE2 — PORTE bit 2 |
| Pin 83 | RE3 — PORTE bit 3 |
| Pin 84 | RE4 — PORTE bit 4 |
| Pin 85 | RE5 — PORTE bit 5 |
| Pin 86 | RE6 — PORTE bit 6 |
| Pin 87 | RE7 — PORTE bit 7 |
| Pin 88 | VSS — Ground |
| Pin 89 | VDD — Supply voltage (3.3V) |
| Pin 90 | RG0 — PORTG bit 0 |
| Pin 91 | RG1 — PORTG bit 1 |
| Pin 92 | RG2 — PORTG bit 2 |
| Pin 93 | RG3 — PORTG bit 3 |
| Pin 94 | RG6 — PORTG bit 6 |
| Pin 95 | RG7 — PORTG bit 7 |
| Pin 96 | RG8 — PORTG bit 8 |
| Pin 97 | RG9 — PORTG bit 9 |
| Pin 98 | VSS — Ground |
| Pin 99 | OSC1/RC0 — Crystal oscillator input |
| Pin 100 | OSC2/RC1 — Crystal oscillator output |
Typische Anwendungen
PIC32MX450F256LT-V/PF ist geeignet für 7 Anwendungs: USB Human Interface Device (HID) Peripherals, Industrial Control Panel with Capacitive Touch HMI, Motor Control with Comparators and PWM, Point-of-Sale (POS) Terminal Data Capture, Connected IoT Edge Device with USB Diagnostics, Audio Processing with USB Streaming, Automotive Dashboard Sub-display Module.
USB Human Interface Device (HID) Peripherals
The PIC32MX450F256LT-V/PF's integrated USB 2.0 Full-Speed OTG transceiver makes it ideal for USB HID peripherals such as keyboards, mice, game controllers, and custom input devices. The 80 MHz MIPS32 M4K core (100 DMIPS) handles USB protocol stack, HID report generation, and debounce logic with margin to spare, and 64 KB SRAM accommodates descriptor tables plus input buffers. With 256 KB Flash, designers can host a full USB bootloader plus application in one device, enabling field firmware updates over USB. Compared to MCUs requiring an external USB PHY, the integrated transceiver reduces BOM cost and PCB area. Placed between the USB connector and the system logic, the MCU enumerates as a HID device with no external crystal beyond the standard 8 MHz primary oscillator. The trade-off is full-speed only (12 Mbps), which is sufficient for HID-class latency targets.
Empfohlen
Industrial Control Panel with Capacitive Touch HMI
The PIC32MX450F256LT-V/PF's on-chip CTMU (Charge Time Measurement Unit) and parallel master port combine to support capacitive touch HMI panels with TFT LCDs. The CTMU drives a matrix of capacitive touch electrodes via charge-time measurement, eliminating external touch controller ICs, while the parallel master port streams pixel data to a graphical LCD without taxing the CPU. With 80 MHz core and 64 KB SRAM, the device can refresh a QVGA display at 60 fps while simultaneously sampling touch channels and running the HMI state machine. The -V temperature grade (-40C to +105C) supports factory-floor environments where equipment operates near motors or heaters. Typical use: a 5-inch TFT panel with 16 capacitive buttons, communicating to a PLC over UART or CAN. Power dissipation stays well below 100 mW at typical 3.3 V supply.
Empfohlen
Motor Control with Comparators and PWM
The PIC32MX450F256LT-V/PF integrates two analog comparators, multiple PWM channels, and QEI peripherals for sensorless or sensored BLDC motor control in pumps, fans, and small appliances. The 80 MHz core executes field-oriented control (FOC) loops at 10-20 kHz with margin for CAN communication and housekeeping tasks. The 100-pin TQFP package provides dedicated PWM outputs tied to specific pin positions, and the 256 KB Flash comfortably hosts motor control libraries plus application logic. Compared to MCUs without integrated comparators, the on-chip comparators eliminate external op-amps for back-EMF sensing, reducing both BOM cost and PCB area. The -V temperature grade (-40C to +105C) tolerates the elevated ambient near power stages in motor compartments. Note that high-current switching requires careful PCB layout with isolated analog/digital ground planes.
Empfohlen
Point-of-Sale (POS) Terminal Data Capture
The PIC32MX450F256LT-V/PF supports point-of-sale terminals that read magnetic stripe, barcode, NFC/RFID, and receipt printer interfaces simultaneously. Its 80 MHz MIPS32 M4K core handles the multi-protocol state machines needed for card readers and barcode decoders, while the dual SPI/I2S channels drive external peripherals like audio chips for beeps and prompts. With 256 KB Flash and 64 KB SRAM, the device hosts TCP/IP stacks, encryption routines, and printer drivers. The USB OTG port supports peripherals or hosts cash drawer triggers. The 100-pin TQFP package exposes enough I/O to interface with multiple reader heads. As of 2026, this line is now capable of USB peripherals typically found in retail environments with PCI-compliant firmware overlays.
Empfohlen
Connected IoT Edge Device with USB Diagnostics
The PIC32MX450F256LT-V/PF suits connected IoT edge nodes that require USB-based firmware update, diagnostics, and configuration alongside primary wireless connectivity. The 256 KB Flash fits a TCP/IP stack plus application, and 64 KB SRAM supports TLS buffers and connection state. The USB OTG port provides a standard service interface for technicians to attach a laptop and run diagnostics, capture logs, or update firmware. The 80 MHz MIPS32 M4K core leaves compute headroom for sensor sampling, sample data, and HTTP/MQTT communication over an external Wi-Fi or Sub-GHz radio. The -V temperature grade supports outdoor or industrial cabinets. Trade-off: the USB port is full-speed only, so high-bandwidth peripherals like USB webcams are not feasible.
Empfohlen
Audio Processing with USB Streaming
The PIC32MX450F256LT-V/PF's dual SPI/I2S channels and USB 2.0 FS OTG make it a viable host for USB audio streaming peripherals and DSP audio processors. The two SPI/I2S interfaces connect to external audio CODECs at up to 48 kHz sample rates, while USB FS (12 Mbps) supports mono/stereo PCM streams for headsets, USB microphones, or intercoms. The 80 MHz MIPS32 M4K core can execute lightweight DSP routines like filters or basic codecs in real time, and 64 KB SRAM buffers audio frames without dropouts. With 256 KB Flash, audio effect tables fit alongside USB stack. Compared to dedicated USB audio bridges, this part adds programmable DSP at marginal cost increase, useful for custom audio processing or voice effects.
Empfohlen
Automotive Dashboard Sub-display Module
The PIC32MX450F256LT-V/PF's -V temperature grade (-40C to +105C) and 100-pin TQFP package suit automotive dashboard sub-display modules that show secondary information like HVAC status or trip computer data. The parallel master port streams pixels to a small TFT LCD, while the CTMU supports backlit capacitive switches around the display. The 80 MHz core refreshes the LCD and polls switch matrix concurrently, and 256 KB Flash fits graphics tables plus automotive diagnostics routines. The dual CAN support (when paired with the PIC32MX460 variant or external MCP2515) enables OBD-II connectivity. The USB OTG port serves as a factory programming and end-of-line test interface. Compared to lower-spec MCUs, this part provides automotive-grade temperature and integrated peripherals needed for in-cabin electronics.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC32MX450F256LT-V/PF – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC32MX450F256L-I/PF | PIC32MX450F256HT-V/PF | PIC32MX450F256LT-I/PF | PIC32MX350F256LT-V/PF | PIC32MX370F512LT-I/PF |
|---|---|---|---|---|---|---|
| Package | 100-pin TQFP (14x14) | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit - same | MIPS32 M4K 32-bit - same | MIPS32 M4K 32-bit - same | MIPS32 M4K 32-bit - same | MIPS32 M4K 32-bit - same |
| Operating Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 512 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 128 KB |
| USB | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | None | None |
| Temperature Grade | -40C to +105C (V grade) | -40C to +85C (I grade) | -40C to +105C (V grade) | -40C to +85C (I grade) | -40C to +105C (V grade) | -40C to +85C (I grade) |
| SPI/I2S | 2 | 2 | 2 | 2 | 2 | 2 |
| Approximate Unit Price (1pc) | $6.31 | $5.95 (est.) | $6.40 (est.) | $5.95 (est.) | $5.50 (est.) | $7.20 (est.) |
Wichtigste Unterscheidungsmerkmale
- Higher memory capacity (256KB Flash, 64KB SRAM) versus base PIC32MX3 family (vs. PIC32MX370F512LT-I/PF)
- Integrated USB 2.0 FS OTG with on-chip transceiver (vs. PIC32MX350F256LT-V/PF)
- Wider -V temperature grade for industrial/automotive use (vs. PIC32MX450F256L-I/PF)
- Parallel master port for direct LCD/CFRA grid connection (vs. PIC32MX330F064LT-I/PF)
Designhinweise
The PIC32MX450F256LT-V/PF operates from 2.5 V to 3.6 V with internal core regulation. Decouple each VDD/VSS pair with 100 nF X7R ceramic placed within 3 mm of the pin, plus a bulk 10 uF tantalum or polymer cap near the package. USB supply pins (VDDUSB) need an additional 1 uF and 100 nF pair for clean reference to the internal USB transceiver. The MCU draws roughly 30-50 mA at 80 MHz full-load; ensure your LDO can supply peak transients during USB enumeration without sagging below 3.0 V.
Use a 4-layer PCB with continuous ground plane under and around the 100-pin TQFP footprint (14x14 mm, 0.5 mm pitch). The exposed thermal pad on the TQFP must be soldered to a copper pour connected to ground for mechanical strength and thermal dissipation. Keep high-speed USB traces (D+/D-) length-matched and routed over a continuous ground plane with 90 ohm differential impedance. Avoid running noisy switching traces parallel to the crystal oscillator traces within 5 mm.
Do not exceed 80 MHz core clock - the Flash wait-state configuration must match the operating frequency or the MCU will fetch wrong instructions and crash. Do not leave the MCLR pin floating; tie it to VDD via 10 kohm or drive it directly for proper reset. The ICSP pins (PGECx/PGEDx) must be accessible for in-circuit programming, and the JTAG pins (TCK/TMS/TDO/TDI) must be left in their default state unless JTAG debugging is disabled in configuration bits. The USB D+/D- pins require 15 kohm pull-down resistors if the device operates as USB device.
Place the 8 MHz primary crystal within 8 mm of OSC1/OSC2 with short symmetric traces and guard ground. If using the internal 8 MHz RC, you can skip the crystal but USB full-speed requires the USB PLL reference to be within 50 ppm accuracy, which may demand a crystal. The RTCC crystal (32.768 kHz) requires similar care: short traces, guard ground, and a 6-10 pF load capacitor pair per the crystal datasheet. The analog inputs (ANx on PORTA) should be routed away from digital switching signals to avoid coupling.
USB 2.0 full-speed D+/D- traces require controlled 90 ohm differential impedance and length matching within 150 mil. Add a common-mode choke or ferrite bead if the USB connector is more than 25 mm from the MCU. The SPI bus signals can run at 25 MHz+; keep traces under 50 mm and add 22-33 ohm series resistors at the driver end for source termination. The parallel master port (PMADDR/PMDATA/PMRD/PMWR) signals drive a parallel LCD and should be length-matched if the bus runs above 20 MHz.
Compliance-Informationen
RoHS compliant per Microchip product page. -V temperature grade supports industrial/automotive environments but the part is not AEC-Q100 qualified - choose PIC32MX460 family variants for AEC-Q100 automotive requirements.
