PIC32MX450F256H-V/PT - 80MHz 32-bit MCU 256KB Flash 64-TQFP | Microchip
Référence : PIC32MX450F256H-V/PT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $7.65 | $7,65 |
| 10 | $6.83 | $68,30 |
| 100 | $5.92 | $592,00 |
| 500 | $5.31 | $2 655,00 |
| 1 000 | $4.78 | $4 780,00 |
PIC32MX450F256H-V/PT Présentation
A 32-bit microcontroller (MCU) is a microprocessor core integrated with Flash, RAM, and peripheral IPs on a single die. Within the broader taxonomy, PIC32MX devices belong to the microcontroller family -> embedded processor -> semiconductor IC category, using the MIPS32 M4K Harvard architecture that delivers up to 1.53 DMIPS/MHz (approximately 122 DMIPS at 80 MHz) with single-cycle hardware multiply/divide. The "32" denotes 32-bit data path; "MX" identifies the PIC32 baseline series; "450" is the sub-family code (this member adds USB and richer peripherals); "F256" encodes 256 KB Flash; "H" denotes the 64-pin package code; "-V" indicates the -40C to +105C extended operating temperature grade; and "/PT" marks TQFP packaging.
Key differentiating specifications include 256 KB single-cycle Flash with pre-fetch buffer to mitigate wait-state penalties at 80 MHz, 64 KB SRAM suitable for audio buffering and TCP/IP stacks, six DMA channels for low-CPU-overhead peripheral transfers, two I2S modules enabling stereo audio codecs and digital microphones, and an integrated USB 2.0 Full-Speed device/host/OTG controller. The CTMU enables touch sensing, capacitive proximity, and time-of-flight measurement without external analog ICs.
Technically, the device pairs a 5-stage pipeline MIPS core with a multi-vector interrupt controller, a bus matrix that supports concurrent Flash/RAM/peripheral access, and a peripheral pin-select (PPS) block that remaps digital functions to physical pins to ease PCB routing. The USB PHY is on-chip, eliminating external transceivers for basic HID/CDC/Mass Storage designs.
Typical applications include USB audio interfaces (USB headset/DAC adapters), HMI panels with capacitive touch, industrial control and dataloggers with USB connectivity, low-cost embedded web/IoT edge nodes, and digital signage controllers. The 64-pin TQFP footprint exposes 53 digital I/O and ample analog channels for mixed-signal designs.
Design consideration: route the USB D+/D- pair with 90 ohm differential impedance, place the VBUS sense resistor close to the connector, and ensure the VDDCORE decoupling network (10 uF + 100 nF) sits within 5 mm of the VCAP pin. The PIC32MX450 supports industrial temperature operation but does not reach AEC-Q100 automotive grade - select PIC32MK or PIC32MZ for automotive.
This page synthesizes distributor pricing, drop-in package-compatible alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternatives de remplacement direct pour PIC32MX450F256H-V/PT — 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 PIC32MX450F256H-V/PT (même facteur de forme et même empreinte) — différant par Package, ADC, Maximum CPU Frequency, Core Architecture, USB.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC32MX450F256HT-V/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC32MX450F256H-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC32MX450F256HT-I/PT
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$4.85 / unité
Voir la fiche technique →PIC32MX440F256H-80V/PT
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC32MX430F064H-V/PT
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$4.1 / unité
Voir la fiche technique →PIC32MX340F256H-80V/PT
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$4.4 / unité
Voir la fiche technique →PIC32MX450F256H-V/PT Valeurs maximales et caractéristiques électriques
| Core Architecture | MIPS32 M4K, 32-bit, 5-stage pipeline |
| Maximum CPU Frequency | 80 MHz (up to 150 MHz on other family members) |
| DMIPS | approximately 122 DMIPS at 80 MHz |
| Flash Program Memory | 256 KB |
| SRAM | 64 KB |
| Operating Voltage (VDD) | 2.3 V to 3.6 V |
| Température de fonctionnement | -40C to +105C (-V grade) |
| Boîtier | 64-pin TQFP (PT), 10x10 mm |
| USB | USB 2.0 Full-Speed Device/Host/OTG (on-chip PHY) |
| DMA Channels | 6 |
| SPI/I2S Modules | 2 (configurable) |
| I2C Modules | 2 |
| UART Modules | 2 |
| Analog Comparators | 2 |
| ADC | 10-bit, 16-channel, 1 Msps |
| CTMU Channels | 16 |
| RTCC | Yes (Real-Time Clock/Calendar) |
| GPIO (max) | 53 |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
Configuration des broches de PIC32MX450F256H-V/PT
| Broche 1 | RG15 — General purpose I/O |
| Broche 2 | VDD — Digital supply 3.3V |
| Broche 3 | RF13 — General purpose I/O |
| Broche 4 | VSS — Ground |
| Broche 5 | RD1 — General purpose I/O |
| Broche 6 | RD2 — General purpose I/O |
| Broche 7 | RD3 — General purpose I/O |
| Broche 8 | RD4 — General purpose I/O |
| Broche 9 | RD5 — General purpose I/O |
| Broche 10 | RD6 — General purpose I/O |
| Broche 11 | RD7 — General purpose I/O |
| Broche 12 | RG6 — General purpose I/O |
| Broche 13 | RG7 — General purpose I/O |
| Broche 14 | RG8 — General purpose I/O |
| Broche 15 | RG9 — General purpose I/O |
| Broche 16 | VDD — Digital supply 3.3V |
| Broche 17 | VSS — Ground |
| Broche 18 | RA0 — Analog input / reference |
| Broche 19 | RA1 — Analog input / reference |
| Broche 20 | RB0 — PPS-capable I/O |
| Broche 21 | RB1 — PPS-capable I/O |
| Broche 22 | RB2 — PPS-capable I/O |
| Broche 23 | RB3 — PPS-capable I/O |
| Broche 24 | RB4 — PPS-capable I/O |
| Broche 25 | RB5 — PPS-capable I/O |
| Broche 26 | RB6 — PPS-capable I/O / ICDPG CLK |
| Broche 27 | RB7 — PPS-capable I/O / ICDPG DATA |
| Broche 28 | RB8 — PPS-capable I/O |
| Broche 29 | RB9 — PPS-capable I/O |
| Broche 30 | RB10 — PPS-capable I/O |
| Broche 31 | RB11 — PPS-capable I/O |
| Broche 32 | RB12 — PPS-capable I/O |
| Broche 33 | RB13 — PPS-capable I/O |
| Broche 34 | RB14 — PPS-capable I/O |
| Broche 35 | RB15 — PPS-capable I/O |
| Broche 36 | RD8 — General purpose I/O |
| Broche 37 | RD9 — General purpose I/O |
| Broche 38 | RD10 — General purpose I/O |
| Broche 39 | RD11 — General purpose I/O |
| Broche 40 | RD12 — General purpose I/O |
| Broche 41 | RD13 — General purpose I/O |
| Broche 42 | RD14 — General purpose I/O |
| Broche 43 | RD15 — General purpose I/O |
| Broche 44 | VSS — Ground |
| Broche 45 | VDD — Digital supply 3.3V |
| Broche 46 | RF0 — General purpose I/O |
| Broche 47 | RF1 — General purpose I/O |
| Broche 48 | RF2 — General purpose I/O |
| Broche 49 | RF3 — General purpose I/O |
| Broche 50 | RF4 — General purpose I/O |
| Broche 51 | RF5 — General purpose I/O |
| Broche 52 | RF6 — General purpose I/O / D- (USB) |
| Broche 53 | RF7 — General purpose I/O / D+ (USB) |
| Broche 54 | RF8 — General purpose I/O |
| Broche 55 | VUSB — USB 3.3V supply |
| Broche 56 | VDD — Digital supply 3.3V |
| Broche 57 | RG0 — General purpose I/O |
| Broche 58 | RG1 — General purpose I/O |
| Broche 59 | RG2 — General purpose I/O |
| Broche 60 | RG3 — General purpose I/O |
| Broche 61 | RE0 — PPS-capable I/O |
| Broche 62 | RE1 — PPS-capable I/O |
| Broche 63 | RE2 — PPS-capable I/O |
| Broche 64 | VCAP — Core voltage decoupling (connect 10uF + 100nF to VSS) |
Applications typiques
PIC32MX450F256H-V/PT convient pour 6 applications: USB Audio Interface (DAC/Headset Adapter), HMI Control Panel with Capacitive Touch, Industrial Datalogger with USB Connectivity, Low-Cost Embedded Web/IoT Edge Node, Digital Signage / LED Display Controller, Medical Monitoring / Wearable Data Hub.
USB Audio Interface (DAC/Headset Adapter)
The PIC32MX450F256H-V/PT is ideal for USB audio interface designs such as USB DAC adapters, USB headsets, and USB microphone peripherals. Its integrated USB 2.0 Full-Speed device controller with on-chip PHY eliminates external transceiver cost; the two I2S modules provide a master/slave digital audio interface to drive an external stereo DAC such as the PCM5101A or to receive data from an external ADC. The 64 KB of SRAM comfortably buffers USB audio packets and supports sample-rate-conversion look-up tables, while 256 KB of Flash holds USB Audio Class 1.0 firmware plus user interface logic. Power: a single 3.3 V rail feeds both the MCU core and external codec; the PIC32MX450 typically consumes 30-50 mA active at 80 MHz with USB enabled. Compared to a software-only USB implementation, the on-chip USB PHY simplifies FCC/CE EMI compliance by providing a characterized USB interface.
Recommandé
HMI Control Panel with Capacitive Touch
Human-Machine Interface (HMI) panels benefit from the PIC32MX450F256H-V/PT's integrated CTMU (Charge Time Measurement Unit), which enables up to 16 channels of capacitive touch sensing without an external analog front-end. The 256 KB Flash holds graphical libraries and menu structures, while 64 KB SRAM serves as a framebuffer for small TFT or OLED displays. The peripheral pin-select (PPS) block allows UART, SPI, and timer functions to be remapped to any digital I/O, easing PCB routing for displays with non-standard pinouts. Trade-off: very large TFT displays (>320x240) may need external SDRAM, which the PIC32MX450 does not natively support - consider PIC32MZ for those designs. Recommended pairing: a 3.5-inch TFT (HX8347 controller via SPI) and a 5-way navigation switch.
Recommandé
Industrial Datalogger with USB Connectivity
Industrial datalogger applications leverage the PIC32MX450F256H-V/PT's 16-channel 10-bit ADC (1 Msps), two I2C channels for sensor interfacing, two UART channels for RS-232/RS-485 transceivers, and the USB 2.0 Full-Speed port for direct data export to a host PC. The -V extended temperature grade (-40C to +105C) supports outdoor or factory-floor enclosures. Real-time logging is supported by the on-chip RTCC with battery backup domain, allowing timestamped samples even during main power loss. The 64 KB SRAM can buffer 32,000 16-bit ADC samples before requiring USB offload - useful for burst-mode vibration or power-quality capture. Compared to external ADCs, the integrated 10-bit ADC eliminates ~USD 1-2 BOM cost; for 12-bit precision, use PIC32MX570 or PIC32MZ.
Recommandé
Low-Cost Embedded Web/IoT Edge Node
The PIC32MX450F256H-V/PT is a strong fit for low-cost IoT edge nodes using its integrated USB for Ethernet-via-RNDIS or its UART for Wi-Fi modules (e.g., Microchip's ATWINC1500). The 256 KB Flash supports lightweight TCP/IP stacks (TCP/IP Lite + MQTT) with TLS handshakes, while 64 KB RAM holds TLS session buffers. The 6 DMA channels offload SPI/UART transfers, leaving the MIPS core free for application logic. Trade-off: the 80 MHz CPU limits heavy encryption; for production-grade TLS 1.3, consider PIC32MZ or external crypto accelerators. Power consumption at 80 MHz is approximately 30 mA active - acceptable for mains-powered IoT gateways but too high for battery-only deployments.
Recommandé
Digital Signage / LED Display Controller
Digital signage controllers use the PIC32MX450F256H-V/PT's two I2S/SPI channels and 6 DMA channels to drive chains of LED drivers (e.g., TLC5947) or small TFT panels. The 80 MHz MIPS core executes LED refresh loops with sufficient headroom for color-space conversion and gamma correction. The 64 KB SRAM holds a full frame of 256x16 LED data, while 256 KB Flash stores lookup tables, fonts, and animation sequences. The USB port supports content uploads from a host PC, removing the need for an external programmer in field deployments. Trade-off: for >1024 LEDs per chain or higher refresh rates, consider PIC32MZ EF series which offers hardware crypto and faster peripherals.
Recommandé
Medical Monitoring / Wearable Data Hub
Wearable medical monitoring hubs benefit from the PIC32MX450F256H-V/PT's 16-channel 10-bit ADC, two I2C channels for connecting to biomedical sensors (pulse oximetry, temperature), and the USB port for tethered data offload to a clinical workstation. The 64 KB SRAM can buffer multiple sensor streams for hours before offload. The 256 KB Flash holds BLE-provisioning logic when paired with an external RN4870 module over UART. Note: this MCU is NOT medical-grade certified; for FDA-class-II devices, add a separate watchdog/supervisor and perform full IEC 60601-1 validation. Power consumption at 80 MHz is roughly 30 mA - acceptable for bedside monitors but not for battery-only wearables; duty-cycle aggressively for battery designs.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC32MX450F256H-V/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC32MX450F256HT-V/PT | PIC32MX450F256H-I/PT | PIC32MX450F256HT-I/PT | PIC32MX440F256H-80V/PT | PIC32MX430F064H-V/PT | PIC32MX340F256H-80V/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (PT, 10x10 mm) | 64-TQFP (PT) - same | 64-TQFP (PT) - same | 64-TQFP (PT) - same | 64-TQFP (PT) - same | 64-TQFP (PT) - same | 64-TQFP (PT) - same |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 64 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB | 32 KB |
| Maximum CPU Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| USB 2.0 FS | Yes (Device/Host/OTG) | Yes | Yes | Yes | No (USB absent on 440 sub-family) | Yes | Yes (Full-Speed only) |
| Operating Temperature | -40C to +105C (-V grade) | -40C to +105C (-V grade) | -40C to +85C (-I grade) | -40C to +85C (-I grade) | -40C to +105C (-V grade) | -40C to +105C (-V grade) | -40C to +105C (-V grade) |
| Approx. Unit Price (USD, qty 1) | USD 7.65 | USD 7.65 (same die, T&R variant) | USD 6.80 (industrial grade) | USD 6.80 | USD 6.20 (no USB) | USD 4.85 (smaller Flash/SRAM) | USD 5.95 |
Principaux différenciateurs
- Integrated USB 2.0 Full-Speed Device/Host/OTG with on-chip PHY (vs PIC32MX440F256H-80V/PT)
- Extended temperature grade (-40C to +105C) for industrial/outdoor designs (vs PIC32MX450F256H-I/PT)
- Larger Flash and SRAM versus the PIC32MX430F064H-V/PT (vs PIC32MX430F064H-V/PT)
Notes de conception
Estimated: route the USB D+ (RF7) and D- (RF6) pair as a 90 ohm differential with matched length and a clean ground reference; place the VBUS sense resistor within 5 mm of the USB connector. Decouple VDD/VSS pairs with one 100 nF X7R per pair plus a shared 4.7 uF bulk capacitor. The VCAP pin (pin 64) requires a 10 uF tantalum in parallel with a 100 nF ceramic placed within 5 mm to stabilize the internal 1.8 V core regulator.
The PIC32MX450F256H-V/PT dissipates approximately 100 mW at 80 MHz with all peripherals enabled (3.3 V x 30 mA). In the 64-TQFP (PT) 10x10 mm package, theta_JA is approximately 50 C/W without a thermal pad, so the junction rises about 5C above ambient - well within the +105C extended temperature limit. For continuous USB-host operation that draws more current, ensure at least 1 square inch of copper ground pour under the package.
Common pitfalls: (1) leaving the VCAP pin un-decoupled causes erratic Flash programming and brown-out resets; (2) using GPIO pins RE0-RE2 for analog functions without disabling the JTAG/ICDPG alternate functions; (3) failing to configure the Peripheral Pin Select (PPS) lock before accessing PPS registers; (4) forgetting to set the DEVCFG0 bit for proper USB PLL configuration. Always run the MPLAB Harmony Configurator to generate correct initialization code for these subsystems.
PPS-remapped outputs (RB0-RB15 and RE0-RE2) drive at fixed slew rates suitable for sub-25 MHz signals. For SPI buses above 25 MHz (the PIC32MX450 supports up to 50 MHz SPI), use peripheral-dedicated pins if available, or place a 33 ohm series resistor near the MCU pin to dampen reflections on long traces.
Informations de conformité
RoHS and REACH compliant per Microchip product page; lead-free reflow-compatible. Not AEC-Q100 qualified - for automotive, use PIC32MK or PIC32MX with automotive grade suffix.
