PIC32MX450F128L-V/TL - 80MHz 32-Bit MCU 128KB Flash USB | Microchip
N.º de pieza: PIC32MX450F128L-V/TL ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $7.42 | $7,42 |
| 10 | $6.78 | $67,80 |
| 100 | $6.04 | $604,00 |
| 500 | $5.41 | $2.705,00 |
| 1.000 | $4.82 | $4.820,00 |
PIC32MX450F128L-V/TL Descripción general
A 32-bit microcontroller (MCU) is an integrated circuit that combines a 32-bit processor core, program and data memory, and a configurable set of on-chip peripherals (ADC, timers, communication interfaces, I/O) on a single silicon die. Microcontrollers sit at the top of the embedded-system hierarchy: system-on-module -> MCU -> CPU core -> instruction set, enabling battery-powered and cost-sensitive products to perform deterministic real-time control. The PIC32MX series uses the MIPS32 instruction set with the M4K pipeline to deliver up to 150 DMIPS while keeping active power below 1 mA/MHz in typical conditions.
Key features of the PIC32MX450F128L-V/TL include 128 KB Flash (128K x 8), 16 KB SRAM, USB 2.0 full-speed OTG with on-chip transceiver, two analog comparators with 2 us response, a 10-bit 1 Msps ADC with 28 channels, five 16-bit timers/captures, and a Parallel Master Port for graphics or memory expansion. The -V grade denotes an operating range of -40C to +105C; the /TL suffix identifies a 124-VTLA tray/tube packaging variant.
Architecturally the device uses a Harvard-style bus with separate Flash and RAM paths, a 5-stage M4K pipeline, and a multi-vector interrupt controller. The 124-VTLA package exposes up to 97 general-purpose I/O pins and a dedicated trace interface for real-time instruction trace through dedicated TRCLK/TRDx pins, which simplifies firmware debugging on production hardware.
Typical applications include USB-equipped industrial HMI panels, audio playback devices using SPI/I2S codecs, low-cost graphics terminals using the PMP bus, sensor aggregation hubs with USB-CDC virtual COM port, and USB HID/mouse/keyboard controllers. Its combination of USB, PMP, and 28-channel ADC makes it well suited to multi-signal embedded designs.
When designing with this part, allocate the exposed thermal pad (EP) directly under the IC to a continuous top-layer ground pour to keep junction temperature within the 105C operating envelope. The PIC32MX3/4 datasheet recommends a 10 uF + 0.1 uF decoupling pair on each VDD/VSS pin pair placed within 5 mm of the package, and a dedicated ferrite-bead-isolated USB VBUS rail to keep high-frequency USB transients away from the analog supply.
This page synthesizes the Microchip datasheet, current DigiKey/Mouser pricing, drop-in same-package alternatives, and practical PCB and USB-bus design notes not aggregated in any single distributor listing.
Alternativas directas para PIC32MX450F128L-V/TL — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC32MX450F128L-V/TL (mismo factor de forma y huella) — difiere en Package, USB, ADC, Parallel Master Port (PMP), Core Architecture.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC32MX450F128LT-V/TL
✅ Sustitución directa✓ En stock
$3.2 / unidad
Ver hoja de datos →PIC32MX470F512L-V/TL
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC32MX440F128L-80V/BG
✅ Sustitución directa✓ En stock
$4.75 / unidad
Ver hoja de datos →PIC32MX370F512L-V/TL
✅ Sustitución directa✓ En stock
$5.58 / unidad
Ver hoja de datos →PIC32MX450F128H-I/RG
✅ Sustitución directa✓ En stock
$2.79 / unidad
Ver hoja de datos →PIC32MX270F512L-V/PT
✅ Sustitución directa✓ En stock
$6.48 / unidad
Ver hoja de datos →PIC32MX450F128L-V/TL Valores máximos y características eléctricas
| Core | MIPS32 M4K 32-bit |
| Max CPU Frequency | 80 MHz |
| DMIPS | 150 DMIPS (per family spec) |
| Flash Program Memory | 128 KB (128K x 8) |
| SRAM | 16 KB |
| Operating Voltage | 2.3 V to 3.6 V |
| I/O Voltage Tolerance | 5 V-tolerant digital pins |
| USB | USB 2.0 Full-Speed OTG with on-chip transceiver |
| SPI / I2S | 2 modules |
| I2C | 2 modules |
| UART | 2 modules |
| ADC | 10-bit, 1 Msps, up to 28 channels |
| Analog Comparators | 2 |
| Timers | 5 x 16-bit timers/capture |
| Parallel Master Port (PMP) | 8-bit, for graphics or external memory |
| I/O Pins (max) | 97 |
| Encapsulado | 124-VTLA (9x9 mm) with exposed pad |
| Operating Temperature (V grade) | -40C to +105C |
| Programming/Debug | ICSP, 4-wire JTAG, Real-Time Instruction Trace |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de PIC32MX450F128L-V/TL
| Pin 1 | RA0 — I/O port A bit 0 / AN0 analog input |
| Pin 2 | RA1 — I/O port A bit 1 / AN1 analog input |
| Pin 3 | RA2 — I/O port A bit 2 / AN2 analog input |
| Pin 4 | RA3 — I/O port A bit 3 / AN3 analog input |
| Pin 5 | RA4 — I/O port A bit 4 |
| Pin 6 | RA5 — I/O port A bit 5 |
| Pin 7 | VDD — Core supply voltage 2.3-3.6 V |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1 — Crystal/oscillator input |
| Pin 10 | OSC2 — Crystal/oscillator output |
| Pin 11 | PGED1 — ICSP data pin 1 / I/O |
| Pin 12 | PGEC1 — ICSP clock pin 1 / I/O |
| Pin 13 | RB0 — I/O port B bit 0 |
| Pin 14 | RB1 — I/O port B bit 1 |
| Pin 15 | RB2 — I/O port B bit 2 |
| Pin 16 | RB3 — I/O port B bit 3 |
| Pin 17 | RB4 — I/O port B bit 4 |
| Pin 18 | RB5 — I/O port B bit 5 / AN5 analog input |
| Pin 19 | RB6 — I/O port B bit 6 / AN6 analog input |
| Pin 20 | RB7 — I/O port B bit 7 / AN7 analog input |
| Pin 21 | RB8 — I/O port B bit 8 |
| Pin 22 | RB9 — I/O port B bit 9 |
| Pin 23 | RB10 — I/O port B bit 10 |
| Pin 24 | RB11 — I/O port B bit 11 |
| Pin 25 | RB12 — I/O port B bit 12 |
| Pin 26 | RB13 — I/O port B bit 13 |
| Pin 27 | RB14 — I/O port B bit 14 |
| Pin 28 | RB15 — I/O port B bit 15 |
| Pin 29 | VDD — Core supply voltage 2.3-3.6 V |
| Pin 30 | VSS — Ground reference |
| Pin 31 | RC0 — I/O port C bit 0 |
| Pin 32 | RC1 — I/O port C bit 1 |
| Pin 33 | RC2 — I/O port C bit 2 |
| Pin 34 | RC3 — I/O port C bit 3 |
| Pin 35 | RC4 — I/O port C bit 4 |
| Pin 36 | RC5 — I/O port C bit 5 |
| Pin 37 | RC6 — I/O port C bit 6 |
| Pin 38 | RC7 — I/O port C bit 7 |
| Pin 39 | RC8 — I/O port C bit 8 |
| Pin 40 | RC9 — I/O port C bit 9 |
| Pin 41 | RC10 — I/O port C bit 10 |
| Pin 42 | RC11 — I/O port C bit 11 |
| Pin 43 | RC12 — I/O port C bit 12 |
| Pin 44 | RC13 — I/O port C bit 13 |
| Pin 45 | RC14 — I/O port C bit 14 |
| Pin 46 | RC15 — I/O port C bit 15 |
| Pin 47 | VDD — Core supply voltage 2.3-3.6 V |
| Pin 48 | VSS — Ground reference |
| Pin 49 | RD0 — I/O port D bit 0 |
| Pin 50 | RD1 — I/O port D bit 1 |
| Pin 51 | RD2 — I/O port D bit 2 |
| Pin 52 | RD3 — I/O port D bit 3 |
| Pin 53 | RD4 — I/O port D bit 4 |
| Pin 54 | RD5 — I/O port D bit 5 |
| Pin 55 | RD6 — I/O port D bit 6 |
| Pin 56 | RD7 — I/O port D bit 7 |
| Pin 57 | RD8 — I/O port D bit 8 |
| Pin 58 | RD9 — I/O port D bit 9 |
| Pin 59 | RD10 — I/O port D bit 10 |
| Pin 60 | RD11 — I/O port D bit 11 |
| Pin 61 | RD12 — I/O port D bit 12 |
| Pin 62 | RD13 — I/O port D bit 13 |
| Pin 63 | RD14 — I/O port D bit 14 |
| Pin 64 | RD15 — I/O port D bit 15 |
| Pin 65 | VDD — Core supply voltage 2.3-3.6 V |
| Pin 66 | VSS — Ground reference |
| Pin 67 | RE0 — I/O port E bit 0 / PMD0 |
| Pin 68 | RE1 — I/O port E bit 1 / PMD1 |
| Pin 69 | RE2 — I/O port E bit 2 / PMD2 |
| Pin 70 | RE3 — I/O port E bit 3 / PMD3 |
| Pin 71 | RE4 — I/O port E bit 4 / PMD4 |
| Pin 72 | RE5 — I/O port E bit 5 / PMD5 |
| Pin 73 | RE6 — I/O port E bit 6 / PMD6 |
| Pin 74 | RE7 — I/O port E bit 7 / PMD7 |
| Pin 75 | RE8 — I/O port E bit 8 / PMA8 |
| Pin 76 | RE9 — I/O port E bit 9 / PMA9 |
| Pin 77 | VDD — Core supply voltage 2.3-3.6 V |
| Pin 78 | VSS — Ground reference |
| Pin 79 | RF0 — I/O port F bit 0 |
| Pin 80 | RF1 — I/O port F bit 1 |
| Pin 81 | RF2 — I/O port F bit 2 |
| Pin 82 | RF3 — I/O port F bit 3 |
| Pin 83 | RF4 — I/O port F bit 4 |
| Pin 84 | RF5 — I/O port F bit 5 |
| Pin 85 | RF6 — I/O port F bit 6 |
| Pin 86 | RF7 — I/O port F bit 7 |
| Pin 87 | RF8 — I/O port F bit 8 |
| Pin 88 | RF9 — I/O port F bit 9 |
| Pin 89 | RF10 — I/O port F bit 10 |
| Pin 90 | RF11 — I/O port F bit 11 |
| Pin 91 | RF12 — I/O port F bit 12 |
| Pin 92 | RF13 — I/O port F bit 13 |
| Pin 93 | VDD — Core supply voltage 2.3-3.6 V |
| Pin 94 | VSS — Ground reference |
| Pin 95 | RG0 — I/O port G bit 0 |
| Pin 96 | RG1 — I/O port G bit 1 |
| Pin 97 | RG2 — I/O port G bit 2 |
| Pin 98 | RG3 — I/O port G bit 3 |
| Pin 99 | RG6 — I/O port G bit 6 / USB D- |
| Pin 100 | RG7 — I/O port G bit 7 / USB D+ |
| Pin 101 | RG8 — I/O port G bit 8 |
| Pin 102 | RG9 — I/O port G bit 9 |
| Pin 103 | RG10 — I/O port G bit 10 |
| Pin 104 | RG11 — I/O port G bit 11 |
| Pin 105 | RG12 — I/O port G bit 12 |
| Pin 106 | RG13 — I/O port G bit 13 |
| Pin 107 | RG14 — I/O port G bit 14 |
| Pin 108 | RG15 — I/O port G bit 15 |
| Pin 109 | VDD — Core supply voltage 2.3-3.6 V |
| Pin 110 | VSS — Ground reference |
| Pin 111 | VUSB3V3 — USB transceiver 3.3 V supply |
| Pin 112 | VBUS — USB bus voltage detect |
| Pin 113 | TRCLK — Trace clock output |
| Pin 114 | TRD0 — Trace data bit 0 |
| Pin 115 | TRD1 — Trace data bit 1 |
| Pin 116 | TRD2 — Trace data bit 2 |
| Pin 117 | TRD3 — Trace data bit 3 |
| Pin 118 | MCLR — Master clear (reset) input, active-low |
| Pin 119 | PGED2 — ICSP data pin 2 / I/O |
| Pin 120 | PGEC2 — ICSP clock pin 2 / I/O |
| Pin 121 | VREF+ — ADC voltage reference positive |
| Pin 122 | VREF- — ADC voltage reference negative |
| Pin 123 | AVDD — Analog supply voltage |
| Pin 124 | AVSS — Analog ground |
Aplicaciones típicas
PIC32MX450F128L-V/TL es adecuado para 6 aplicacións: USB-Equipped Industrial HMI Panels, USB Audio Playback Devices, Graphics Display Terminals (PMP-driven TFT), USB CDC Virtual COM Port Bridges, USB HID Keyboards / Mice / Gamepads, Multi-Channel Sensor Aggregation Hubs.
USB-Equipped Industrial HMI Panels
The PIC32MX450F128L-V/TL drives industrial HMI panels by combining USB 2.0 Full-Speed OTG (allowing PC-based configuration and firmware update without an external programmer), an 8-bit Parallel Master Port for direct graphics LCD interfacing, and a 10-bit 1 Msps ADC with 28 channels for back-panel sensor inputs. The 80 MHz MIPS32 M4K core handles touch-screen decoding plus on-screen graphics refresh at 30-60 Hz, while 128 KB Flash fits mid-sized LVGL/Micrium GUI applications. Practical: dedicate the on-chip USB transceiver to a USB-C receptacle with ESD protection (USBLC6-2SC6), and place a 100 uF tantalum plus 0.1 uF ceramic on VBUS to keep inrush below USB 2.0 spec.
Recomendado
USB Audio Playback Devices
The PIC32MX450F128L-V/TL enables low-cost USB audio peripherals by acting as a USB Full-Speed audio device and streaming PCM samples over I2S to an external audio DAC. The two integrated SPI/I2S modules support up to 48 kHz / 16-bit stereo streams, while the integrated USB 2.0 OTG transceiver eliminates the need for an external PHY. The 80 MHz core, 16 KB SRAM, and DMA engine support concurrent USB isochronous transfer and I2S DMA with sub-frame jitter. Practical: connect I2S BCLK/LRCK/DATA to a TI TLV320AIC23B or AKM AK4621A codec, and use a 12.288 MHz crystal to provide 256 x 48 kHz audio master clock without an external PLL.
Recomendado
Graphics Display Terminals (PMP-driven TFT)
The PIC32MX450F128L-V/TL drives small QVGA/WQVGA TFT LCDs directly via its 8-bit Parallel Master Port, supporting Intel 8080 and Motorola 6800 modes. With 80 MHz CPU and 16 KB SRAM the part performs single-buffered 320x240 at 16 bpp with a partial frame buffer in RAM, or full QVGA refresh using PMP DMA. The 124-pin VTLA provides 97 GPIO, freeing ample pins for SD card, SPI flash, and capacitive touch. Practical: drive PMP through 100 ohm source-terminated series resistors to suppress 3.3 V reflections on long FPC traces, and place a 4.7 uF bulk cap on the panel's AVDD pin.
Recomendado
USB CDC Virtual COM Port Bridges
The PIC32MX450F128L-V/TL acts as a USB-to-UART bridge using its on-chip USB 2.0 OTG controller and one of its two UART modules, eliminating the external FTDI chip and BOM cost. With 80 MHz CPU it handles CDC class requests, line-coding, and baud-rate adaptation up to 921600 bps without flow control. The 128 KB Flash stores both bootloader and application, while 16 KB SRAM is sufficient for 4 KB HID plus CDC buffers. Practical: include a 4.7 uF + 0.1 uF decoupling pair on VUSB3V3 and 100 nF in parallel on the D+/D- lines for USB compliance.
Recomendado
USB HID Keyboards / Mice / Gamepads
The PIC32MX450F128L-V/TL supports USB HID input devices via the on-chip USB OTG transceiver and 5 16-bit timers for matrix/keyboard scanning. Its 80 MHz core debounces up to an 8x16 key matrix at 1 kHz, with 128 KB Flash storing multiple HID report descriptors (boot keyboard, mouse, gamepad) and 16 KB SRAM large enough for keyboard rollover buffers. The 124-VTLA exposes 97 GPIO for direct matrix drive. Practical: add 33 ohm series resistors on D+/D-, place a ferrite bead on VBUS to suppress ESD, and use 5 V-tolerant I/O to read older 5 V scan matrices directly.
Recomendado
Multi-Channel Sensor Aggregation Hubs
The PIC32MX450F128L-V/TL aggregates industrial sensors via its 28-channel 10-bit 1 Msps ADC, two I2C buses (for digital sensors), two analog comparators (for fast over-current or threshold detection), and uploads telemetry through USB CDC. The 5 16-bit timers pace multi-rate sampling (e.g., 100 Hz temperature, 1 kHz vibration), and 16 KB SRAM holds 1024-sample ring buffers. Practical: add a 4.7 nF RC plus op-amp buffer to each analog input for ADC source impedance below 2 kohm, and isolate the USB D+/D- lines with a common-mode choke to reject EMI in motor cabinets.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC32MX450F128L-V/TL — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC32MX450F128LT-V/TL | PIC32MX470F512L-V/TL | PIC32MX440F128L-80V/BG | PIC32MX370F512L-V/TL | PIC32MX450F128H-I/RG | PIC32MX270F512L-V/PT |
|---|---|---|---|---|---|---|---|
| Package | 124-VTLA (9x9) | 124-VTLA (9x9) - same | 124-VTLA (9x9) - same | 124-VTLA (9x9) family - same | 124-VTLA (9x9) - same | 124-VTLA (9x9) family - same | 100-TQFP (14x14) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | MIPS32 M4K 80 MHz | MIPS32 M4K 80 MHz | MIPS32 M4K 80 MHz | MIPS32 M4K 80 MHz | MIPS32 M4K 80 MHz | MIPS32 M4K 80 MHz | MIPS32 M4K 80 MHz |
| Flash | 128 KB | 128 KB | 512 KB | 128 KB | 512 KB | 128 KB | 512 KB |
| SRAM | 16 KB | 16 KB | 128 KB | 16 KB | 128 KB | 16 KB | 64 KB |
| USB 2.0 OTG | Yes (integrated transceiver) | Yes | Yes | No (external PHY) | No | Yes | Yes |
| ADC Channels | 28 | 28 | 28 | 13 | 28 | 28 | 28 |
| Operating Temperature | -40C to +105C (V) | -40C to +125C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +85C (I) | -40C to +105C |
Diferenciadores clave
- Integrated USB 2.0 Full-Speed OTG transceiver (frente a PIC32MX440F128L-80V/BG)
- Higher-density 124-VTLA package with 97 GPIO (frente a PIC32MX270F512L-V/PT (100-TQFP))
- Larger Flash (128 KB) than baseline PIC32MX3 (frente a PIC32MX370F512L-V/TL)
- 105C V-grade operating range with full peripheral set (frente a PIC32MX450F128H-I/RG (-I grade 85C))
Notas de diseño
Estimated: For a 124-VTLA board running 80 MHz MIPS M4K at 3.3 V, place a 10 uF + 0.1 uF ceramic decoupling pair within 5 mm of every VDD/VSS pin pair. Add a dedicated 4.7 uF + 100 nF on VUSB3V3 (pin 111) and a separate ferrite-bead-isolated 3.3 V LDO for the USB transceiver to keep switching noise off the analog supply. Decoupling the AVDD/AVSS pins (123, 124) with 100 nF ceramic plus 10 uF bulk reduces ADC noise by 1-2 LSB.
Estimated: at 80 MHz and 3.3 V, active current is approximately 55-65 mA (per family datasheet typical at 1 mA/MHz plus I/O leakage), so power dissipation is roughly 200 mW. The 124-VTLA exposed pad must be soldered to a top-layer ground pour of at least 25 x 25 mm to keep theta_JA below 25 C/W; without the EP soldered, junction temperature will exceed 105C under load.
Route the USB D+/D- differential pair (RG6, RG7) with 90 ohm differential impedance and 33 ohm series source resistors placed within 5 mm of the IC. Use a common-mode choke (e.g., ACM2012) near the USB receptacle to suppress common-mode emissions, and place a USBLC6-2SC6 ESD array within 10 mm of the connector. Keep trace length matching under 0.5 mm to meet USB 2.0 FS signal-integrity requirements.
Do not assume the 124-VTLA and 100-TQFP packages are interchangeable. PIC32MX450F128L is offered in 100-TQFP (PIC32MX450F128L-V/PF, DigiKey 4080150) with a different pinout - substituting one for the other requires PCB rework. Always verify the package code suffix (TL = VTLA tube, PT = TQFP tray, PF = TQFP tray) before finalizing the BOM. Also note the -V grade is 105C, not 125C; choose the -LT/-T variant for higher temperatures.
Keep the 12 MHz primary oscillator traces (OSC1, OSC2) short (under 10 mm) and surround them with a ground guard ring to reduce EMI susceptibility. Place the ICSP pins (PGED1/PGEC1, PGED2/PGEC2) on accessible PCB test pads for field firmware update, and isolate them from analog signals by at least 3 mm to avoid digital switching noise coupling into ADC channels.
Información de cumplimiento
RoHS and lead-free confirmed by Microchip product page (microchip.com/en-us/product/PIC32MX450F128L). AEC-Q100 not applicable for industrial-grade MCU; halogen-free status not stated by manufacturer.
