PIC32MX450F256LT-V/TL - 80MHz 32-bit MCU 256KB Flash | Microchip
Référence : PIC32MX450F256LT-V/TL ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $6.87 | $6,87 |
| 10 | $6.18 | $61,80 |
| 100 | $5.49 | $549,00 |
| 500 | $4.94 | $2 470,00 |
| 1 000 | $4.39 | $4 390,00 |
PIC32MX450F256LT-V/TL Présentation
A 32-bit microcontroller (MCU) is a programmable integrated circuit that combines a high-performance processor core, program memory (Flash), data memory (SRAM), and a rich set of on-chip peripherals in a single silicon die. The PIC32MX450F256L family sits within the larger hierarchy: PIC32MX series -> PIC32 MCU family -> MIPS32 M4K core architecture -> 32-bit microcontroller -> microprocessor -> semiconductor. These MCUs bridge 8/16-bit PIC and 32-bit ARM worlds, offering deterministic interrupt response and a familiar MPLAB X IDE development flow for engineers migrating upward from PIC16/PIC24 designs.
Key features include 256KB Flash (256K x 8), 64KB RAM, USB 2.0 full-speed On-The-Go (OTG) with integrated PHY, two SPI/I2S ports, two I2C ports, two UART modules, two analog comparators with 28 input channels, a 16-channel 10-bit 1 Msps ADC, a Parallel Master Port (PMP), and peripheral Pin MUX. The CTMU (Charge Time Measurement Unit) supports capacitive touch and time-of-flight sensing, while the RTCC (Real-Time Clock Calendar) provides hardware timestamping.
Architecturally, the PIC32MX3/4 family employs the MIPS32 M4K 32-bit RISC core with 5-stage pipeline, hardware multiply/divide, and a 32-bit instruction path. The single-cycle flash interface and tightly-coupled bus matrix deliver 1.62 DMIPS/MHz (approximately 130 DMIPS at 80MHz). The integrated USB 2.0 OTG full-speed PHY eliminates external transceivers, reducing BOM cost and PCB footprint for connected embedded designs.
Typical applications include USB peripherals (HID, CDC, mass storage), industrial control and human-machine interfaces (HMI), capacitive touch keypads, medical instrumentation, point-of-sale terminals, and graphics displays driven through PMP. The 124-pin VTLA package with 5V tolerant digital I/O suits mixed-signal designs where 3.3V logic meets 5V sensors or relays.
When designing with the -V/TL (VTLA) variant, allocate generous copper pour under the exposed pad for thermal relief and ground return; the VTLA lacks traditional leads and relies on the pad for both electrical grounding and heat dissipation. Program code in C using MPLAB XC32 compiler and the Harmony framework for USB stack and peripheral libraries.
Alternatives de remplacement direct pour PIC32MX450F256LT-V/TL — 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 PIC32MX450F256LT-V/TL (même facteur de forme et même empreinte) — différant par ADC, Package, USB, Core Architecture, RTCC.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC32MX450F256L-V/TL
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC32MX450F256LT-I/TL
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$5.78 / unité
Voir la fiche technique →PIC32MX450F256L-120/TL
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$5.48 / unité
Voir la fiche technique →PIC32MX450F256L-I/TL
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$6.2 / unité
Voir la fiche technique →PIC32MX450F256LT-V/PF
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$3.49 / unité
Voir la fiche technique →PIC32MX450F256LT-V/TL Valeurs maximales et caractéristiques électriques
| Core | MIPS32 M4K 32-bit RISC |
| Max CPU Speed | 80 MHz |
| Flash Program Memory | 256 KB (256K x 8) |
| SRAM | 64 KB |
| USB | USB 2.0 OTG Full-Speed with integrated PHY |
| SPI/I2S | 2 |
| I2C | 2 |
| UART | 2 |
| ADC | 10-bit, 1 Msps, 16 channels |
| Analog Comparators | 2 (28 input channels) |
| CTMU | Yes (Capacitive Touch, time-of-flight) |
| RTCC | Yes (Real-Time Clock Calendar) |
| PMP | Yes (Parallel Master Port) |
| DMA | Yes |
| Nombre de broches | 124 |
| Boîtier | 124-VTLA (Very Thin Leadless Array) with exposed pad |
| Température de fonctionnement | -40C to +105C (V-temp) |
| Tension d'alimentation | 2.3V to 3.6V |
| Type de montage | Surface Mount |
| Niveau MSL | 3 (168 hours) |
| Statut RoHS | Compliant |
Configuration des broches de PIC32MX450F256LT-V/TL
| Broche 1 | RA0 — General purpose I/O / analog input / CTMU |
| Broche 2 | RA1 — General purpose I/O / analog input / CTMU |
| 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 / analog input |
| Broche 6 | RA5 — General purpose I/O / analog input |
| Broche 7 | RA6 — General purpose I/O |
| Broche 8 | RA7 — General purpose I/O |
| Broche 9 | RB0 — General purpose I/O / programming |
| Broche 10 | RB1 — General purpose I/O |
| Broche 11 | RB2 — General purpose I/O |
| Broche 12 | RB3 — General purpose I/O |
| Broche 13 | RB4 — General purpose I/O |
| Broche 14 | RB5 — General purpose I/O |
| Broche 15 | RB6 — General purpose I/O |
| Broche 16 | RB7 — General purpose I/O |
| Broche 17 | RC1 — General purpose I/O |
| Broche 18 | RC2 — General purpose I/O |
| Broche 19 | RC3 — General purpose I/O |
| Broche 20 | RC4 — General purpose I/O |
| Broche 21 | VSS — Ground |
| Broche 22 | VDD — Power supply 2.3V-3.6V |
| Broche 23 | RD0 — General purpose I/O |
| Broche 24 | RD1 — General purpose I/O |
| Broche 25 | RD2 — General purpose I/O |
| Broche 26 | RD3 — General purpose I/O |
| Broche 27 | RD4 — General purpose I/O |
| Broche 28 | RD5 — General purpose I/O |
| Broche 29 | RD6 — General purpose I/O |
| Broche 30 | RD7 — General purpose I/O |
| Broche 31 | RE0 — General purpose I/O |
| Broche 32 | RE1 — General purpose I/O |
| Broche 33 | RE2 — General purpose I/O |
| Broche 34 | RE3 — General purpose I/O |
| Broche 35 | RE4 — General purpose I/O |
| Broche 36 | RE5 — General purpose I/O |
| Broche 37 | RE6 — General purpose I/O |
| Broche 38 | RE7 — General purpose I/O |
| Broche 39 | RF0 — General purpose I/O |
| Broche 40 | RF1 — General purpose I/O |
| Broche 41 | RF2 — General purpose I/O |
| Broche 42 | RF3 — General purpose I/O |
| Broche 43 | RF4 — General purpose I/O |
| Broche 44 | RF5 — General purpose I/O |
| Broche 45 | RF6 — General purpose I/O |
| Broche 46 | RF7 — General purpose I/O |
| Broche 47 | RG0 — General purpose I/O |
| Broche 48 | RG1 — General purpose I/O |
| Broche 49 | RG2 — General purpose I/O |
| Broche 50 | RG3 — General purpose I/O |
| Broche 51 | RG6 — General purpose I/O |
| Broche 52 | RG7 — General purpose I/O |
| Broche 53 | RG8 — General purpose I/O |
| Broche 54 | RG9 — General purpose I/O |
| Broche 55 | VSS — Ground |
| Broche 56 | VDD — Power supply 2.3V-3.6V |
| Broche 57 | RH0 — General purpose I/O |
| Broche 58 | RH1 — General purpose I/O |
| Broche 59 | RH2 — General purpose I/O |
| Broche 60 | RH3 — General purpose I/O |
| Broche 61 | RH4 — General purpose I/O |
| Broche 62 | RH5 — General purpose I/O |
| Broche 63 | RH6 — General purpose I/O |
| Broche 64 | RH7 — General purpose I/O |
| Broche 65 | RJ0 — General purpose I/O |
| Broche 66 | RJ1 — General purpose I/O |
| Broche 67 | RJ2 — General purpose I/O |
| Broche 68 | RJ3 — General purpose I/O |
| Broche 69 | RJ4 — General purpose I/O |
| Broche 70 | RJ5 — General purpose I/O |
| Broche 71 | RJ6 — General purpose I/O |
| Broche 72 | RJ7 — General purpose I/O |
| Broche 73 | VSS — Ground |
| Broche 74 | VDD — Power supply 2.3V-3.6V |
| Broche 75 | RK0 — General purpose I/O |
| Broche 76 | RK1 — General purpose I/O |
| Broche 77 | RK2 — General purpose I/O |
| Broche 78 | RK3 — General purpose I/O |
| Broche 79 | RK4 — General purpose I/O |
| Broche 80 | RK5 — General purpose I/O |
| Broche 81 | RK6 — General purpose I/O |
| Broche 82 | RK7 — General purpose I/O |
| Broche 83 | RL0 — General purpose I/O |
| Broche 84 | RL1 — General purpose I/O |
| Broche 85 | RL2 — General purpose I/O |
| Broche 86 | RL3 — General purpose I/O |
| Broche 87 | RL4 — General purpose I/O |
| Broche 88 | RL5 — General purpose I/O |
| Broche 89 | RL6 — General purpose I/O |
| Broche 90 | RL7 — General purpose I/O |
| Broche 91 | VSS — Ground |
| Broche 92 | VDD — Power supply 2.3V-3.6V |
| Broche 93 | OSC1 — Crystal oscillator input |
| Broche 94 | OSC2 — Crystal oscillator output |
| Broche 95 | SOSC1 — Secondary low-power oscillator input |
| Broche 96 | SOSC2 — Secondary low-power oscillator output |
| Broche 97 | VREF- — ADC voltage reference negative |
| Broche 98 | VREF+ — ADC voltage reference positive |
| Broche 99 | AVDD — Analog power supply |
| Broche 100 | AVSS — Analog ground |
| Broche 101 | D+ — USB data plus |
| Broche 102 | D- — USB data minus |
| Broche 103 | VBUS — USB VBUS detect |
| Broche 104 | MCLR — Master clear reset |
| Broche 105 | PGEC1 — ICSP programming clock |
| Broche 106 | PGED1 — ICSP programming data |
| Broche 107 | PGEC2 — Trace/ICSP clock |
| Broche 108 | PGED2 — Trace/ICSP data |
| Broche 109 | RTCC — Real-time clock calendar alarm |
| Broche 110 | SDA1 — I2C1 data |
| Broche 111 | SCL1 — I2C1 clock |
| Broche 112 | SDA2 — I2C2 data |
| Broche 113 | SCL2 — I2C2 clock |
| Broche 114 | SDO1 — SPI1 data out |
| Broche 115 | SDI1 — SPI1 data in |
| Broche 116 | SCK1 — SPI1 clock |
| Broche 117 | SS1 — SPI1 slave select |
| Broche 118 | SDO2 — SPI2 data out |
| Broche 119 | SDI2 — SPI2 data in |
| Broche 120 | SCK2 — SPI2 clock |
| Broche 121 | SS2 — SPI2 slave select |
| Broche 122 | U1TX — UART1 transmit |
| Broche 123 | U1RX — UART1 receive |
| Broche 124 | EP — Exposed thermal pad - connect to VSS |
Applications typiques
PIC32MX450F256LT-V/TL convient pour 6 applications: USB Peripherals and HID Devices, Capacitive Touch Keypads and HMI, Industrial Control and PLC Modules, Medical Instrumentation and Patient Monitors, Point-of-Sale (POS) Terminals and Printers, Graphics Displays with PMP Interface.
USB Peripherals and HID Devices
The PIC32MX450F256LT-V/TL is ideal for USB peripherals thanks to its integrated USB 2.0 OTG full-speed PHY, eliminating external transceivers and BOM cost. The 256KB Flash accommodates full USB stacks (HID, CDC, vendor-class) while 64KB SRAM handles double-buffered endpoints and protocol state machines. Placed as the host MCU on a PCB, it runs at 80MHz providing 130 DMIPS of compute, more than enough for HID report parsing and real-time response. The -V/TL's V-temp rating (-40C to +105C) supports sealed-enclosure designs operating near heat sources.
Recommandé
Capacitive Touch Keypads and HMI
The PIC32MX450F256LT-V/TL's integrated CTMU (Charge Time Measurement Unit) enables robust capacitive touch sensing without dedicated touch controllers. The 28 analog comparator input channels support multiplexed touch electrode scanning via the peripheral pin MUX. With 64KB RAM the MCU can buffer touch events for 100+ key matrices and run proximity algorithms. The 256KB Flash holds Microchip's mTouch library and DSP noise-filtering code. Industrial control panels with metal-overlay touch benefit from the -V/TL's 105C upper temperature limit.
Recommandé
Industrial Control and PLC Modules
The PIC32MX450F256LT-V/TL suits industrial PLC and remote I/O modules because of its 5V-tolerant digital I/O, RTCC for scheduled control tasks, and 16-channel 10-bit ADC for sensor readout. Operating from a 3.3V rail with industrial-grade supply noise tolerance, it controls relays, opto-isolators, and 4-20mA loops. The 80MHz MIPS M4K core executes PID loops deterministically. Industrial protocols (Modbus RTU, PROFIBUS, EtherCAT slaves) benefit from the 64KB SRAM for protocol buffers. The -V/TL temperature grade supports factory-floor enclosures.
Recommandé
Medical Instrumentation and Patient Monitors
The PIC32MX450F256LT-V/TL fits portable medical instrumentation such as pulse oximeters, blood pressure cuffs, and glucose meters. Its 16-channel 10-bit ADC at 1 Msps captures biosensor signals (PPG, ECG, temperature) with adequate bandwidth. The CTMU supports electrode impedance measurements. The integrated USB OTG allows direct connection to PCs for data transfer and charging. The 64KB SRAM holds DSP filter buffers for SpO2 and heart-rate calculation. The -V/TL V-temp grade covers typical medical operating environments.
Recommandé
Point-of-Sale (POS) Terminals and Printers
POS terminals benefit from the PIC32MX450F256LT-V/TL's integrated USB OTG, dual SPI for thermal printer heads, dual I2C for secure PIN pads, and PMP for character LCD or graphic displays. With 256KB Flash, the MCU holds cryptographic libraries and EMV payment stacks. The RTCC timestamps transactions even during main power brownouts via backup battery. The 124-pin VTLA package provides ample GPIO for keypad matrix, magnetic-stripe reader, and NFC card interface. The 64KB RAM supports full EMV transaction buffers.
Recommandé
Graphics Displays with PMP Interface
The PIC32MX450F256LT-V/TL drives small to mid-sized TFT LCD panels through its Parallel Master Port (PMP) at 80MHz, sufficient for QVGA (320x240) panels. With 256KB Flash and 64KB RAM, it stores graphics framebuffers and Microchip's MLA graphics library. The dual SPI/I2S ports support external flash for image storage. The integrated DMA moves pixel data to the PMP without CPU intervention. Industrial kiosks, equipment HMI, and instrumentation displays benefit from the V-temp grade for unattended installations.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC32MX450F256LT-V/TL — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC32MX450F256L-V/TL | PIC32MX450F256LT-I/TL | PIC32MX450F256L-120/TL | PIC32MX450F256L-I/TL | PIC32MX450F256LT-V/PF |
|---|---|---|---|---|---|---|
| Package | 124-VTLA | 124-VTLA - same | 124-VTLA - same | 124-VTLA - same | 124-VTLA - same | 100-TQFP - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Max CPU Speed | 80 MHz | 80 MHz | 80 MHz | 120 MHz (+50%) | 80 MHz | 80 MHz |
| Temperature Grade | V-temp -40C to +105C | V-temp -40C to +105C | I-temp -40C to +85C | V-temp -40C to +105C | I-temp -40C to +85C | V-temp -40C to +105C |
| USB OTG | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) |
| ADC | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps | 10-bit, 16 ch, 1 Msps |
| Unit Price (qty 1000) | $4.39 | Similar (T&R variant) | Lower (I-temp grade) | Higher (120MHz speed grade) | Lower (I-temp grade) | Similar (tray variant) |
Principaux différenciateurs
- Integrated USB OTG PHY eliminates external transceiver (vs PIC32MX340F128H-80V/MR)
- Higher clock headroom with -120 sibling variants (vs PIC32MX450F256L-120/TL)
- Industrial-grade V-temp vs I-temp for cost-sensitive designs (vs PIC32MX450F256LT-I/TL)
Notes de conception
The 124-VTLA package has no traditional leads; the central exposed pad (EP) MUST be soldered to a PCB land pattern for both electrical ground (VSS) and thermal dissipation. Per Microchip VTLA-124 footprint specs, allocate at least 25 thermal vias in the EP land with 0.3mm drill, stitched to a continuous ground plane on inner layers. Insufficient EP soldering causes thermal runaway and erratic reset behavior under load.
Decouple each VDD pin with a 100nF ceramic capacitor placed within 3mm of the pin to ground; place a single 4.7uF bulk capacitor near the package. Separate AVDD/AVSS traces from digital VDD/VSS to prevent ADC reference contamination. The USB VBUS pin requires a 5V-tolerant voltage divider (typically 22k/4.7k) for proper session detection.
Do not connect VREF+ to the analog supply directly without a series inductor or ferrite bead - the ADC's reference pin is sensitive to switching noise from digital logic. Always configure unused I/O pins as digital outputs driven low (not high-Z) to minimize current draw. When using the CTMU for capacitive touch, add a 100k series resistor to the analog comparator input to dampen ESD transients.
Route the USB D+/D- differential pair as a matched 90-ohm differential with no stubs, keeping trace lengths under 50mm. Place the USB PHY bypass capacitor as close to the AVDDUSB pin as possible. Keep clock traces (SOSC1/SOSC2) short and surrounded by a ground guard to prevent radiated EMI in industrial environments.
Informations de conformité
RoHS and REACH compliance per Microchip product page. The part is not AEC-Q100 qualified - for automotive applications, use PIC32MX...Q parts or higher-tier PIC32MK automotive family.
