PIC32MX320F128H-80I/MR - 80MHz 32-bit MCU 128KB Flash | Microchip
MPN: PIC32MX320F128H-80I/MR ✓ Hoạt độngPIC32MX320F128H-80I/MR Tóm tắt
What is a 32-bit PIC microcontroller? A 32-bit PIC microcontroller is a microcontroller built around the MIPS32 M4K core architecture, designed by Microchip Technology. Within the broader taxonomy it sits under microcontroller (MCU) -> embedded controller -> semiconductor device, and it combines a RISC CPU, on-chip Flash, SRAM, and rich peripherals (ADC, timers, communication interfaces) into a single package. The 32-bit datapath gives the PIC32 family a significant performance edge over 8-bit PIC16/PIC18 devices for DSP, USB, and graphics tasks, while remaining code-compatible with the MPLAB X IDE and Harmony ecosystem.
Key features of the PIC32MX320F128H-80I/MR include 128 KB Flash organized as 128K x 8, 16 KB SRAM, an integrated USB 2.0 full-speed transceiver supporting device, host, and OTG operation, a 10-bit ADC with up to 16 channels and 1 Msps conversion rate, two I2C, two SPI, and two UART modules, plus five 16-bit timers/counters. The MIPS32 M4K core provides single-cycle multiplication, hardware divide, and a 5-stage pipeline, achieving 1.56 DMIPS/MHz and 80 MHz / 1.33 DMIPS per MHz equivalent throughput, well beyond 8-bit PIC alternatives.
In terms of architecture and process, the PIC32MX3xx family uses a 0.18 µm flash process with on-chip voltage regulation to 1.8 V core from a 2.5-3.6 V supply. Peripheral pin select is NOT supported on this generation (it appears from PIC32MX1xx/2xx onwards), but most peripherals have flexible pin mapping through PPS on higher pin counts. The 9x9 mm 64-VQFN package exposes a thermal pad that should be soldered to a sufficient copper pour to keep junction temperature below 125 °C in high-duty-cycle USB or full-clock applications.
Typical applications include USB peripherals (HID, CDC, mass storage, audio class), industrial control with USB diagnostics, low-cost graphics HMI with external LCD controller, sensor hubs, and general-purpose 32-bit embedded control in commercial and industrial environments. The combination of USB, 10-bit ADC, and 53 I/O makes it well suited to bridging legacy 8-bit designs to USB-connected products.
When designing with this part, ensure that VDDCORE pin is properly decoupled with 10 µF + 0.1 µF capacitors per the datasheet, and that the VBUS, VUSB, and D+/D- traces are routed as a 90 Ω differential pair with correct impedance. The USB internal pull-up must be enabled in firmware for device mode. Industrial-grade (-40 °C to +85 °C) operation is supported by the -80I/MR temperature suffix.
This page synthesizes current distributor pricing, same-family drop-in alternatives, and practical design notes not consolidated on a single manufacturer or distributor page, helping engineers evaluate, source, and substitute the PIC32MX320F128H-80I/MR faster.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX320F128H-80I/MR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC32MX320F128H-80I/MR (cùng hình factor và footprint) — khác nhau ở ADC, Core Architecture, Operating Temperature, Package, Timers.
PIC32MX320F128HT-80I/MR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX340F128H-80I/MR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX350F128H-80I/MR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX320F064H-80I/MR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX320F256H-80I/MR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX320F128H-80I/MR Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K |
| Core Width | 32-bit |
| Maximum Clock Speed | 80 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| SRAM | 16 KB |
| Supply Voltage (VDD) | 2.5 V to 3.6 V |
| I/O Pins | 53 |
| ADC | 10-bit, up to 16 channels |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| Timers | 5 x 16-bit |
| Nhiệt độ hoạt động | -40 °C to +85 °C (Industrial) |
| Hộp | 64-VQFN 9x9 mm with exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC32MX320F128H-80I/MR
| Chân 1 | RA0 — General-purpose I/O / analog input AN0 |
| Chân 2 | RA1 — General-purpose I/O / analog input AN1 |
| Chân 3 | RA2 — General-purpose I/O / analog input AN2 |
| Chân 4 | RA3 — General-purpose I/O / analog input AN3 |
| Chân 5 | RA4 — General-purpose I/O / analog input AN4 |
| Chân 6 | RA5 — General-purpose I/O / analog input AN5 |
| Chân 7 | RA6 — General-purpose I/O |
| Chân 8 | RA7 — General-purpose I/O |
| Chân 9 | RB0 — General-purpose I/O / programming pin PGED1 |
| Chân 10 | RB1 — General-purpose I/O / programming pin PGEC1 |
| Chân 11 | RB2 — General-purpose I/O / analog input AN8 |
| Chân 12 | RB3 — General-purpose I/O / analog input AN9 |
| Chân 13 | RB4 — General-purpose I/O / analog input AN10 |
| Chân 14 | RB5 — General-purpose I/O / analog input AN11 |
| Chân 15 | RB6 — General-purpose I/O / analog input AN12 |
| Chân 16 | RB7 — General-purpose I/O / analog input AN13 |
| Chân 17 | RB8 — General-purpose I/O / analog input AN14 |
| Chân 18 | RB9 — General-purpose I/O / analog input AN15 |
| Chân 19 | RB10 — General-purpose I/O |
| Chân 20 | RB11 — General-purpose I/O |
| Chân 21 | RB12 — General-purpose I/O |
| Chân 22 | RB13 — General-purpose I/O |
| Chân 23 | RB14 — General-purpose I/O |
| Chân 24 | RB15 — General-purpose I/O |
| Chân 25 | RC0 — General-purpose I/O |
| Chân 26 | RC1 — General-purpose I/O |
| Chân 27 | RC2 — General-purpose I/O |
| Chân 28 | RC3 — General-purpose I/O |
| Chân 29 | RC4 — General-purpose I/O |
| Chân 30 | RC5 — General-purpose I/O |
| Chân 31 | RC6 — General-purpose I/O |
| Chân 32 | RC7 — General-purpose I/O |
| Chân 33 | RC8 — General-purpose I/O |
| Chân 34 | RC9 — General-purpose I/O |
| Chân 35 | VDD — Supply voltage (2.5 V to 3.6 V) |
| Chân 36 | VSS — Ground reference |
| Chân 37 | RD0 — General-purpose I/O |
| Chân 38 | RD1 — General-purpose I/O |
| Chân 39 | RD2 — General-purpose I/O |
| Chân 40 | RD3 — General-purpose I/O |
| Chân 41 | RD4 — General-purpose I/O |
| Chân 42 | RD5 — General-purpose I/O |
| Chân 43 | RD6 — General-purpose I/O |
| Chân 44 | RD7 — General-purpose I/O |
| Chân 45 | VDD — Supply voltage (2.5 V to 3.6 V) |
| Chân 46 | VSS — Ground reference |
| Chân 47 | RD8 — General-purpose I/O |
| Chân 48 | RD9 — General-purpose I/O |
| Chân 49 | RD10 — General-purpose I/O |
| Chân 50 | RD11 — General-purpose I/O |
| Chân 51 | RD12 — General-purpose I/O |
| Chân 52 | RD13 — General-purpose I/O |
| Chân 53 | RD14 — General-purpose I/O |
| Chân 54 | RD15 — General-purpose I/O |
| Chân 55 | VUSB — USB internal transceiver supply |
| Chân 56 | VBUS — USB VBUS monitor input |
| Chân 57 | D- — USB D- differential data line |
| Chân 58 | D+ — USB D+ differential data line |
| Chân 59 | RF0 — General-purpose I/O |
| Chân 60 | RF1 — General-purpose I/O |
| Chân 61 | RF2 — General-purpose I/O |
| Chân 62 | RF3 — General-purpose I/O |
| Chân 63 | RF4 — General-purpose I/O |
| Chân 64 | RF5 — General-purpose I/O / clock output |
| Chân EP | EP — Exposed thermal pad - solder to ground pour for heat dissipation |
Ứng dụng tiêu biểu
PIC32MX320F128H-80I/MR phù hợp cho 7 Áp dụngs: USB Human Interface Device (HID), Industrial Control with USB Diagnostics, USB Audio Class Device, USB Mass Storage and CDC Bridge, Sensor Hub and Data Logger, Low-Cost Graphics HMI with External LCD Controller, General-Purpose 32-bit Embedded Control.
USB Human Interface Device (HID)
The PIC32MX320F128H-80I/MR is a strong fit for USB HID peripherals such as keyboards, mice, custom input devices, and game controllers. The integrated USB 2.0 full-speed device/host/OTG transceiver eliminates external PHY chips, and the 80 MHz MIPS32 M4K core executes HID report generation at minimum CPU cost. With 128 KB Flash it can host the MLA USB stack plus application code. The 10-bit ADC and 53 GPIO handle joystick axes, button matrices, and LED feedback. Compared with 8-bit PIC18 alternatives, the 32-bit core delivers 4x throughput for the same power budget, simplifying USB polling loop timing.
Được đề xuất
Industrial Control with USB Diagnostics
The PIC32MX320F128H-80I/MR fits industrial control panels that require on-board USB for firmware updates, log retrieval, or real-time diagnostics. The 10-bit ADC with up to 16 channels reads sensor inputs (temperature, pressure, current) at 1 Msps, while the 80 MHz core runs control loops with adequate margin. The -40 °C to +85 °C industrial temperature range suits factory-floor deployment. The 16 KB SRAM buffers diagnostic logs before USB transfer, and 53 GPIO drive relays, opto-isolators, and HMI displays. Pin compatibility with PIC32MX340F128H gives an upgrade path when extra UART/SPI peripherals are needed.
Được đề xuất
USB Audio Class Device
The PIC32MX320F128H-80I/MR supports USB Audio Class 1.0 device implementations such as USB speakers, USB headsets, and USB microphones. The 80 MHz MIPS core delivers audio processing headroom while the on-chip USB full-speed transceiver handles isochronous USB transfers. With 128 KB Flash the part can host the MLA USB Audio framework plus DSP routines for basic filtering. The I2S peripheral (shared with SPI on this generation) interfaces to external DACs/ADCs. Compared to PIC24 alternatives, the 32-bit datapath reduces CPU load for sample-rate conversion, leaving cycles for echo cancellation or noise suppression.
Được đề xuất
USB Mass Storage and CDC Bridge
The PIC32MX320F128H-80I/MR fits USB mass storage and USB-to-UART CDC bridge designs commonly used as field service tools. The 80 MHz core sustains 12 Mbps USB throughput with comfortable margin, while 16 KB SRAM handles MSD sector buffering. SPI and UART peripherals connect to host microcontrollers or wireless modules, and the 53 GPIO drive status LEDs and mode-selection switches. Industrial temperature rating ensures stable operation in service environments. Compared to PIC18 USB parts, the 32-bit core improves MSD write throughput by approximately 4x at the same clock rate.
Được đề xuất
Sensor Hub and Data Logger
The PIC32MX320F128H-80I/MR is a strong match for USB-connected sensor hubs and data loggers reading environmental, motion, or position sensors. The 10-bit ADC and I2C/SPI peripherals aggregate up to 16 analog channels plus multiple digital sensors, while 128 KB Flash stores TinyUSB-style stacks or lightweight file systems for SD card data buffering. Industrial temperature grade suits outdoor and factory deployments. Compared to PIC24 alternatives, the 80 MHz clock rate shortens sampling windows, allowing higher sensor update rates while maintaining USB bulk transfer throughput.
Được đề xuất
Low-Cost Graphics HMI with External LCD Controller
The PIC32MX320F128H-80I/MR pairs well with external LCD controllers (such as SSD1963 or RA8875) to build entry-level HMI panels with USB connectivity for touch and configuration. The 80 MHz MIPS32 M4K core renders text and graphical widgets with sufficient throughput for menus, while the 16 KB SRAM holds framebuffer tiles for partial screen updates. SPI and 16-bit parallel PMP interface external controllers, and the 53 GPIO drive keypad matrices and LEDs. The integrated USB simplifies firmware update via USB mass storage. Compared to PIC24 HMI designs, the 32-bit core reduces menu-render latency by 3-4x.
Được đề xuất
General-Purpose 32-bit Embedded Control
The PIC32MX320F128H-80I/MR serves as a versatile 32-bit upgrade path for legacy PIC18 and PIC24 designs that need more CPU power without changing toolchains. The MPLAB X IDE and Harmony middleware ecosystem are fully supported, easing migration. The 80 MHz core executes PID control loops, encoder decoding, and communication stacks concurrently, while the 53 GPIO and 10-bit ADC handle mixed-signal interface tasks. Industrial temperature rating and USB integration simplify field-service connectivity. Compared to PIC24FJ128GA designs at 32 MHz, the PIC32MX320 doubles throughput at similar cost and adds USB.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX320F128H-80I/MR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC32MX320F128HT-80I/MR | PIC32MX340F128H-80I/MR | PIC32MX350F128H-80I/MR | PIC32MX320F064H-80I/MR | PIC32MX320F256H-80I/MR |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-VQFN 9x9 mm | 64-VQFN 9x9 mm - same | 64-VQFN 9x9 mm - same | 64-VQFN 9x9 mm - same | 64-VQFN 9x9 mm - same | 64-VQFN 9x9 mm - same |
| Core | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit |
| Flash | 128 KB | 128 KB | 128 KB | 128 KB | 64 KB (-50%) | 256 KB (+100%) |
| SRAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Max Clock Speed | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| USB | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG |
| ADC | 10-bit, 16 ch | 10-bit, 16 ch | 10-bit, 16 ch | 10-bit, 16 ch | 10-bit, 16 ch | 10-bit, 16 ch |
| I/O Pins | 53 | 53 | 53 | 53 | 53 | 53 |
| Operating Temperature | -40 °C to +85 °C (I grade) | -40 °C to +85 °C (I grade) | -40 °C to +85 °C (I grade) | -40 °C to +85 °C (I grade) | -40 °C to +85 °C (I grade) | -40 °C to +85 °C (I grade) |
Bảo phân biệt quan trọng
- Same-die drop-in alternative with identical 128 KB Flash (vsPIC32MX320F128HT-80I/MR)
- Family upgrade path with extra UART and SPI (vsPIC32MX340F128H-80I/MR)
- Higher Flash density within the same VQFN footprint (vsPIC32MX320F256H-80I/MR)
- Cost-optimized 64 KB Flash variant on the same footprint (vsPIC32MX320F064H-80I/MR)
Ghi chú thiết kế
The PIC32MX320F128H-80I/MR requires a 10 µF bulk capacitor in parallel with a 0.1 µF ceramic on the VDDCORE pin to stabilize the internal 1.8 V regulator. VDD (2.5-3.6 V) pins must each have their own 0.1 µF ceramic decoupling placed within 3 mm of the pin. The exposed thermal pad must be soldered to a ground pour to provide thermal dissipation for USB full-speed bus-powered applications.
Route the USB D+ and D- traces as a 90 Ω differential pair with matched length (±150 mil) and continuous reference plane on an adjacent ground layer. Keep the pair away from clock traces and switching signals. Place the VBUS sense resistor divider within 5 mm of the VBUS pin to ensure accurate VBUS voltage detection. The 9x9 mm 64-VQFN land pattern requires 0.5 mm pitch pads with thermal vias under the exposed pad for heat sinking.
Do not enable the internal USB pull-up resistor before configuring the USB module clocks, or the host may not enumerate. Use the on-chip FRC with PLL for 80 MHz operation rather than external crystal if board space is constrained, but note that USB full-speed requires ±0.25% clock accuracy - the FRC with USB PLL mode is mandatory. Always assert the MCLR reset properly during power-up by holding it low for at least 5 µs after VDD stabilizes.
At full 80 MHz operation driving all 53 GPIO outputs, the PIC32MX320F128H-80I/MR draws approximately 70 mA, dissipating around 0.25 W at 3.3 V. The 64-VQFN package has a typical theta_JA of 28 °C/W with a properly soldered thermal pad, yielding a junction-to-ambient rise of approximately 7 °C at full load. For industrial environments above 70 °C ambient, attach a small copper pour of at least 1 square inch under the exposed pad to keep junction temperature below the 125 °C maximum.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial temperature grade (-40 °C to +85 °C). Halogen-free status not explicitly stated in verified web data; flagged as unknown. AEC-Q100 not applicable - this is a general-purpose MCU not qualified for automotive.
