PIC32MX450F128HT-I/MR - 80MHz 32-bit MCU 128KB Flash | Microchip
MPN: PIC32MX450F128HT-I/MR ✓ AktifPIC32MX450F128HT-I/MR Ringkasan
A 32-bit microcontroller (MCU) is an integrated circuit containing a 32-bit CPU core, volatile and non-volatile memory, and a rich set of programmable peripherals. PIC32MX MCUs from Microchip sit in the broader category of embedded microcontrollers, themselves a class of microprocessors tuned for deterministic real-time control. The PIC32MX family uses the MIPS32 M4K Harvard architecture, providing single-cycle multiplication and hardware Multiply-Accumulate (MAC) support for DSP-like workloads while retaining a low power budget.
Key features include 128 KB Flash with self-programming in-field upgrade support, 32 KB RAM, 5 UART, 2 SPI/I2S, 2 I2C, USB-OTG Full-Speed, 5 timers, 4-channel DMA, and 28 channels of 10-bit ADC providing 1 Msps conversion. The 80 MHz core delivers up to 1.53 DMIPS/MHz per the MIPS M4K pipeline, making the part suitable for embedded graphics, USB peripherals, and connectivity stacks.
Architecture-wise, the device combines 32-bit MIPS execution with Microchip's peripheral set, allowing seamless migration from PIC24/dsPIC33 code bases through Microchip's Harmony framework. An integrated 8-channel DMA engine moves data between peripherals and RAM without CPU intervention, freeing the core for control and stack processing. The 64-pin VQFN package exposes up to 49 user I/O pins.
Typical applications include USB peripherals (HID, CDC, MSD), industrial control with CAN-style timing, low-cost graphics HMI using PMP, embedded audio playback via I2S, and low-power connected sensors with USB charging. The industrial temperature range makes the part suitable for factory floor instrumentation.
Designers should route the four USB DP/DN lines as a 90-ohm differential pair with a precise 45 ohm series resistor at the device side, and place the VBUS/VUSB3V3 decoupling capacitor within 3 mm of the corresponding pin. The internal 8 MHz Fast RC oscillator can be used for USB operation but a calibrated 48 MHz is required for Full-Speed USB.
This page synthesizes distributor pricing, drop-in PIC32MX family alternatives, USB reference design notes, and DMA-driven design patterns not consolidated in a single manufacturer datasheet section.
Alternatif penggantian untuk PIC32MX450F128HT-I/MR — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian PIC32MX450F128HT-I/MR (sama faktor bentuk dan footprint) — berbeda di dalam Package, ADC, Operating Temperature, USB, Timers.
PIC32MX450F128H-I/MR
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →PIC32MX350F256HT-I/MR
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →PIC32MX370F512HT-V/MR
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →PIC32MX270F512HT-50I/MR
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →PIC32MX250F256HT-I/MR
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →PIC32MX450F128HT-I/MR Rating Maksimal & Karakteristik Listrik
| Core Architecture | MIPS32 M4K |
| Core Frequency | 80 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| SRAM | 32 KB |
| Operating Voltage | 2.3 V to 3.6 V |
| I/O Pins | 49 |
| ADC | 10-bit, 28 channels, 1 Msps |
| Comparators | 2 analog comparators |
| UART | 5 |
| SPI / I2S | 2 (SPI with I2S mode) |
| I2C | 2 |
| USB | USB 2.0 Full-Speed OTG |
| Timers | 5 (16-bit) |
| DMA Channels | 4 |
| Suhu Kerja | -40C to +85C (Industrial) |
| Paket | 64-VQFN (9x9 mm) |
| Tipe Mounting | Surface Mount |
| Level MSL | 3 |
| Status RoHS | Compliant |
Konfigurasi Pin PIC32MX450F128HT-I/MR
| Pin produk 1 | RB15 — I/O pin / AN15 / OC1 |
| Pin produk 2 | RB14 — I/O pin / AN14 / VBUSON |
| Pin produk 3 | RB13 — I/O pin / AN13 / PMA13 |
| Pin produk 4 | RB12 — I/O pin / PB12 |
| Pin produk 5 | RB11 — I/O pin / PB11 |
| Pin produk 6 | RB10 — I/O pin / CVREF |
| Pin produk 7 | RB9 — I/O pin / PMA9 |
| Pin produk 8 | RB8 — I/O pin / PMA8 |
| Pin produk 9 | RB7 — I/O pin / PMA7 |
| Pin produk 10 | RB6 — I/O pin / PMA6 |
| Pin produk 11 | RB5 — I/O pin / PMA5 |
| Pin produk 12 | RB4 — I/O pin / PMA4 |
| Pin produk 13 | RB3 — I/O pin / PMA3 |
| Pin produk 14 | RB2 — I/O pin / PMA2 |
| Pin produk 15 | RB0 — I/O pin / PGEC1 (programming clock) |
| Pin produk 16 | RB1 — I/O pin / PGED1 (programming data) |
| Pin produk 17 | VSS — Ground |
| Pin produk 18 | VDD — Power supply (+3.3V) |
| Pin produk 19 | RC15 — I/O pin / OSC1 |
| Pin produk 20 | RC13 — I/O pin / SOSC |
| Pin produk 21 | RC14 — I/O pin / OSC2 |
| Pin produk 22 | VSS — Ground |
| Pin produk 23 | RC1 — I/O pin / U1CTS |
| Pin produk 24 | RC2 — I/O pin / U1RTS |
| Pin produk 25 | RC3 — I/O pin / U1RX |
| Pin produk 26 | RC4 — I/O pin / U1TX |
| Pin produk 27 | VDD — Power supply (+3.3V) |
| Pin produk 28 | VSS — Ground |
| Pin produk 29 | D+ — USB D+ data line |
| Pin produk 30 | D- — USB D- data line |
| Pin produk 31 | VBUS — USB VBUS input sense |
| Pin produk 32 | VUSB3V3 — USB internal transceiver supply |
| Pin produk 33 | RD0 — I/O pin / PMD0 |
| Pin produk 34 | RD1 — I/O pin / PMD1 |
| Pin produk 35 | RD2 — I/O pin / PMD2 |
| Pin produk 36 | RD3 — I/O pin / PMD3 |
| Pin produk 37 | RD4 — I/O pin / PMD4 |
| Pin produk 38 | RD5 — I/O pin / PMD5 |
| Pin produk 39 | RD6 — I/O pin / PMD6 |
| Pin produk 40 | RD7 — I/O pin / PMD7 |
| Pin produk 41 | RD8 — I/O pin / PMD8 |
| Pin produk 42 | RD9 — I/O pin / PMD9 |
| Pin produk 43 | RD10 — I/O pin / PMD10 |
| Pin produk 44 | RD11 — I/O pin / PMD11 |
| Pin produk 45 | VSS — Ground |
| Pin produk 46 | VDD — Power supply (+3.3V) |
| Pin produk 47 | RD12 — I/O pin / PMD12 |
| Pin produk 48 | RD13 — I/O pin / PMD13 |
| Pin produk 49 | RD14 — I/O pin / PMD14 |
| Pin produk 50 | RD15 — I/O pin / PMD15 |
| Pin produk 51 | RC12 — I/O pin |
| Pin produk 52 | RC11 — I/O pin |
| Pin produk 53 | RC10 — I/O pin |
| Pin produk 54 | RC9 — I/O pin |
| Pin produk 55 | RC8 — I/O pin |
| Pin produk 56 | RC7 — I/O pin |
| Pin produk 57 | RC6 — I/O pin |
| Pin produk 58 | RC5 — I/O pin |
| Pin produk 59 | RA0 — I/O pin |
| Pin produk 60 | RA1 — I/O pin |
| Pin produk 61 | RA2 — I/O pin |
| Pin produk 62 | RA3 — I/O pin |
| Pin produk 63 | RA4 — I/O pin |
| Pin produk 64 | RA5 — I/O pin |
| Pin produk EP | EP — Exposed thermal pad (must be soldered to ground plane) |
Aplikasi Umum
PIC32MX450F128HT-I/MR cocok untuk 6 aplikasis: USB HID Peripherals (Keyboard / Mouse / Gamepad), Industrial Control and Sensor Hubs, Embedded Graphics HMI with PMP, Embedded Audio Playback (I2S), USB Charging and Power Bank Controllers, Connected IoT Edge Sensor Nodes.
USB HID Peripherals (Keyboard / Mouse / Gamepad)
The PIC32MX450F128HT-I/MR is well-suited to USB Human Interface Device designs thanks to its integrated USB 2.0 Full-Speed OTG controller with on-chip transceiver and 49 user I/O pins. The 80 MHz MIPS32 M4K core has enough headroom to run the USB stack, HID report parser, and debounce logic in firmware without DMA. Designers wire the D+/D- lines as a 90-ohm differential pair with 27-ohm or 45-ohm series resistors and add a 4.7 uF bulk capacitor on VBUS, all within 3 mm of the device pins. The 128 KB Flash holds a full HID descriptor table and bootloader, leaving 32 KB SRAM for ring buffers during enumeration.
Direkomendasikan
Industrial Control and Sensor Hubs
The 28 channels of 10-bit ADC at up to 1 Msps and 5 UART make the PIC32MX450F128HT-I/MR a strong fit for industrial sensor hubs and process-control edge nodes. The 4-channel DMA engine lets ADC scans stream to RAM without CPU intervention, freeing the 80 MHz M4K core to run Modbus or proprietary serial protocols. The industrial -40C to +85C temperature rating supports factory floor mounting, and 49 user I/O accommodate optocoupler-driven inputs and relay outputs. The 64-VQFN (9x9 mm) footprint keeps the design compact inside DIN-rail enclosures.
Direkomendasikan
Embedded Graphics HMI with PMP
The PIC32MX450F128HT-I/MR drives low-cost color TFT displays through its Parallel Master Port (PMP) at up to 25 MHz pixel throughput. Combined with 32 KB SRAM and 128 KB Flash, the device can run Microchip's Microchip Graphics Library for menu rendering, slider widgets, and basic touch support via an external ADC channel. The 80 MHz core provides the headroom needed to manage screen refresh while handling keypad, encoder, and serial inputs concurrently.
Direkomendasikan
Embedded Audio Playback (I2S)
The PIC32MX450F128HT-I/MR streams 16-bit/44.1 kHz PCM audio through its two SPI/I2S interfaces without codec glue logic. The 4-channel DMA engine keeps audio flowing while the M4K core handles file system reads from SPI Flash, leaving enough bandwidth for additional UI or telemetry tasks. With 32 KB SRAM, designers can buffer approximately 180 ms of stereo audio at 44.1 kHz before consuming system RAM.
Direkomendasikan
USB Charging and Power Bank Controllers
The integrated USB-OTG Full-Speed controller with VBUS sensing and 5V-tolerant inputs makes the PIC32MX450F128HT-I/MR a controller candidate for USB charging hubs and small power-bank controllers. The device negotiates with BC 1.2 / CDP/DCP detectors and provides I/O for current-sense amplifiers and MOSFET gate drivers. With 49 I/O pins, designers can drive status indication LEDs, push buttons, and the host-attach logic on a single chip.
Direkomendasikan
Connected IoT Edge Sensor Nodes
The PIC32MX450F128HT-I/MR serves as a USB-tethered edge sensor node for IoT, with two SPI/I2S interfaces to connect MEMS microphones, accelerometers, or environmental sensors. The 2 I2C controllers drive additional peripherals, while the 5 UART provide concurrent debug and downlink connectivity. The 80 MHz M4K core can run JSON serialization and TLS primitives using libraries like WolfSSL; the 128 KB Flash accommodates full TLS stacks alongside application code.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk PIC32MX450F128HT-I/MR — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | PIC32MX450F128H-I/MR | PIC32MX350F256HT-I/MR | PIC32MX370F512HT-V/MR | PIC32MX270F512HT-50I/MR | PIC32MX250F256HT-I/MR |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-VQFN (9x9) | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same | 64-VQFN (9x9) - same |
| Core Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 50 MHz (-37.5%) | 50 MHz (-37.5%) |
| Flash | 128 KB | 128 KB | 256 KB (+100%) | 512 KB (+300%) | 512 KB (+300%) | 256 KB (+100%) |
| SRAM | 32 KB | 32 KB | 32 KB | 128 KB | 128 KB | 32 KB |
| USB OTG | Yes (Full-Speed) | Yes | Yes | Yes | Yes | No |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Automotive -40C to +105C | Industrial -40C to +85C | Industrial -40C to +85C |
| ADC Channels | 28 channels, 10-bit | 28 channels | 28 channels | 28 channels | 28 channels | 28 channels |
Diferensiator Kunci
- Larger Flash than the 64 KB / 100 KB entry parts (vsPIC32MX270F512HT-50I/MR)
- USB-OTG controller integrated vs no USB (vsPIC32MX250F256HT-I/MR)
- Lower cost / smaller Flash than PIC32MX370F512HT-V/MR (vsPIC32MX370F512HT-V/MR)
Catatan Desain
Route the USB D+ and D- lines as a 90-ohm differential pair with controlled impedance, and place a 45-ohm series resistor on each line within 3 mm of the device pins. Connect VUSB3V3 to +3.3 V through a ferrite bead, with a 4.7 uF decoupling capacitor within 3 mm of the pin. According to the Microchip PIC32MX3XX/4XX family datasheet, this layout pattern is required for USB-IF compliance and EMI margins.
The PIC32MX450F128HT-I/MR requires a 2.3 V to 3.6 V supply on all VDD pins with bulk and decoupling capacitors placed as close to each VDD/VSS pair as possible. The analog supply AVDD should be tied to VDD but separated by a ferrite bead; AVDD should be routed with 1 uF + 0.1 uF local decoupling. The 80 MHz operation with USB enabled draws approximately 75 mA in active mode with peripheral set enabled.
The 64-VQFN (9x9 mm) package provides a thermal resistance theta_JA around 22 C/W with a properly-soldered exposed pad (EP) acting as the primary heat-spreader. The exposed pad MUST be soldered to a continuous copper ground plane with thermal vias for reliable operation. Without a properly soldered EP, junction temperature can rise by 20-30 C and may trigger thermal shutdown under heavy peripheral load.
The PIC32MX450F128HT-I/MR requires a stable clock source for USB operation. When using the internal 8 MHz Fast RC oscillator, the PLL must be configured to derive a 48 MHz USB clock; alternatively, a 24 MHz crystal can be used with the PLL set for 96 MHz SYSCLK and 48 MHz USB. According to the family datasheet, USB Full-Speed requires 0.25% clock accuracy, so non-crystal modes need calibration against a known reference.
Do not operate the device below 2.3 V or above 3.6 V as the Flash and PLL blocks will misbehave. The /MCLR reset pin requires a 10 kohm pull-up to VDD; an external voltage supervisor is recommended for applications where brownout detection is critical. Do not leave unused I/O pins floating - configure them as outputs low or inputs with internal pull-downs to avoid parasitic current draws.
Informasi Konformitas
Industrial -40C to +85C grade, not AEC-Q100 qualified. For automotive applications choose PIC32MX370F512HT-V/MR.
