PIC32MX320F128LT-80V/PT - 32-bit MCU 128KB Flash 80MHz TQFP-100 | Microchip
MPN: PIC32MX320F128LT-80V/PT ✓ Hoạt độngPIC32MX320F128LT-80V/PT Tóm tắt
A PIC32MX microcontroller is a 32-bit MCU based on the MIPS32 M4K core from Microchip Technology, combining deterministic real-time response with the rich peripheral set expected of modern embedded designs. It belongs to the larger PIC32 family -> 32-bit microcontroller -> MCU -> embedded processor hierarchy, and sits below higher-tier PIC32MZ and PIC32MK devices in Microchip's portfolio. The 'V' suffix denotes an extended industrial temperature grade of -40C to +105C for harsh-environment use.
Key features of the PIC32MX320F128LT-80V/PT include 128KB Flash organized as 128K x 8, 16KB SRAM, a 10-bit ADC with up to 16 channels, a 16-bit Parallel Master Port (PMP) for external memory or graphics interfaces, USB 2.0 full-speed On-The-Go (OTG), two I2C and two UART/I2S peripherals, two SPI ports, five 16-bit timers/counters, and a 16-channel DMA controller for CPU offload. The MIPS32 M4K core executes most instructions in one cycle and includes a hardware multiply/divide unit for DSP-class operations.
Architecturally the device pairs the MIPS core with Microchip's standard peripheral set, executes code from internal Flash with optional prefetch cache, and supports trace via the standard MIPS trace interface. The integrated 10-bit ADC with up to 500 ksps throughput is adequate for sensor reading and basic instrumentation, while the 5V-tolerant I/O on most pins simplifies connection to legacy 5V logic.
Typical applications include industrial automation controllers, USB device and embedded host products, graphical user interfaces with PMP-driven TFT displays, consumer appliances, motor control interfaces, and low-cost Ethernet or Wi-Fi gateway nodes. The 100-pin TQFP package offers ample I/O (up to 85 GPIO) for parallel buses, making it a popular choice for legacy peripheral migration from PIC24/PIC18 designs.
When designing with this part, ensure the 2.5V/3.3V core supply is decoupled with at least 100 nF + 1 uF close to VDD pins. Take care to configure unused pins as outputs to minimize current draw, and respect the maximum operating temperature of +105C for the 'V' grade. For designs migrating from PIC24/PIC18, the standard MPLAB X IDE and Harmony frameworks provide drop-in peripheral libraries.
This page synthesizes distributor pricing as of 2026-10-02, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet - providing information gain beyond what is available on DigiKey, Mouser, or the Microchip product page alone.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX320F128LT-80V/PT — 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 PIC32MX320F128LT-80V/PT (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, Core Architecture, DMA Channels, ADC.
PIC32MX320F128LT-80I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX320F128L-80V/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX320F128L-80V/BG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX360F512LT-80I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX430F064L-80V/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX340F512H-80V/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX320F128LT-80V/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K (PIC32) |
| Core Size | 32-bit |
| CPU Speed | 80 MHz maximum |
| Program Memory (Flash) | 128 KB (128K x 8) |
| SRAM | 16 KB |
| Operating Voltage | 2.3 V to 3.6 V (typical 2.5 V or 3.3 V) |
| ADC | 10-bit, up to 16 channels, 500 ksps |
| DMA Channels | 16-channel |
| USB | USB 2.0 Full-Speed OTG |
| UART/I2S | 2 |
| I2C | 2 |
| SPI | 2 |
| Timers | Five 16-bit |
| PMP | 16-bit Parallel Master Port |
| GPIO | Up to 85 |
| Nhiệt độ hoạt động | -40 C to +105 C ('V' grade) |
| Hộp | 100-pin TQFP (PT) 12x12x1 mm |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC32MX320F128LT-80V/PT
| Chân 1 | RG15 — General purpose I/O / Analog input AN30 |
| Chân 2 | VDD — Digital supply 2.3-3.6 V |
| Chân 3 | PMD5/RE5 — PMP data or GPIO |
| Chân 4 | PMD6/RE6 — PMP data or GPIO |
| Chân 5 | PMD7/RE7 — PMP data or GPIO |
| Chân 6 | RA10/RG0 — GPIO (alternate) |
| Chân 7 | RA0/PMD0 — GPIO / PMP data |
| Chân 8 | RA1/PMD1 — GPIO / PMP data |
| Chân 9 | RA2/PMD2 — GPIO / PMP data |
| Chân 10 | RA3/PMD3 — GPIO / PMP data |
| Chân 11 | RA4/PMD4 — GPIO / PMP data |
| Chân 12 | RA5/PMA5 — GPIO / PMP address |
| Chân 13 | RA6/PMA6 — GPIO / PMP address |
| Chân 14 | RA7/PMA7 — GPIO / PMP address |
| Chân 15 | VSS — Digital ground |
| Chân 16 | RA9/PMA9 — GPIO / PMP address |
| Chân 17 | RA14/PMA0 — GPIO / PMP address |
| Chân 18 | RA15/PMA1 — GPIO / PMP address |
| Chân 19 | AVDD — Analog supply (filtered) |
| Chân 20 | AVSS — Analog ground |
| Chân 21 | RB0/AN0/PMA10 — GPIO / analog input / PMP address |
| Chân 22 | RB1/AN1 — GPIO / analog input |
| Chân 23 | RB2/AN2 — GPIO / analog input |
| Chân 24 | RB3/AN3 — GPIO / analog input |
| Chân 25 | RB4/AN4 — GPIO / analog input |
| Chân 26 | RB5/AN5 — GPIO / analog input |
| Chân 27 | RB6/AN6/PGC — GPIO / analog input / ICSP clock |
| Chân 28 | RB7/AN7/PGD — GPIO / analog input / ICSP data |
| Chân 29 | RB8/AN8 — GPIO / analog input |
| Chân 30 | RB9/AN9 — GPIO / analog input |
| Chân 31 | RB10/AN10 — GPIO / analog input |
| Chân 32 | RB11/AN11 — GPIO / analog input |
| Chân 33 | RB12/AN12 — GPIO / analog input |
| Chân 34 | RB13/AN13 — GPIO / analog input |
| Chân 35 | RB14/AN14 — GPIO / analog input |
| Chân 36 | RB15/AN15 — GPIO / analog input |
| Chân 37 | VSS — Digital ground |
| Chân 38 | VDD — Digital supply 2.3-3.6 V |
| Chân 39 | RC1/SCK1 — GPIO / SPI1 clock |
| Chân 40 | RC2/SDI1 — GPIO / SPI1 data in |
| Chân 41 | RC3/SDO1 — GPIO / SPI1 data out |
| Chân 42 | RC4/SDA1 — GPIO / I2C1 data |
| Chân 43 | VSS — Digital ground |
| Chân 44 | RC5/SCL1 — GPIO / I2C1 clock |
| Chân 45 | RC6 — GPIO |
| Chân 46 | RC7 — GPIO |
| Chân 47 | RC8 — GPIO |
| Chân 48 | RC9 — GPIO |
| Chân 49 | VDD — Digital supply 2.3-3.6 V |
| Chân 50 | VSS — Digital ground |
| Chân 51 | RD0 — GPIO |
| Chân 52 | RD1 — GPIO |
| Chân 53 | RD2 — GPIO |
| Chân 54 | RD3 — GPIO |
| Chân 55 | RD4 — GPIO |
| Chân 56 | RD5 — GPIO |
| Chân 57 | RD6 — GPIO |
| Chân 58 | RD7 — GPIO |
| Chân 59 | VSS — Digital ground |
| Chân 60 | VDD — Digital supply 2.3-3.6 V |
| Chân 61 | RD8 — GPIO |
| Chân 62 | RD9 — GPIO |
| Chân 63 | RD10 — GPIO |
| Chân 64 | RD11 — GPIO |
| Chân 65 | RD12 — GPIO |
| Chân 66 | RD13 — GPIO |
| Chân 67 | RD14 — GPIO |
| Chân 68 | RD15 — GPIO |
| Chân 69 | VSS — Digital ground |
| Chân 70 | VDD — Digital supply 2.3-3.6 V |
| Chân 71 | RE0/PMA2 — GPIO / PMP address |
| Chân 72 | RE1/PMA3 — GPIO / PMP address |
| Chân 73 | RE2/PMA4 — GPIO / PMP address |
| Chân 74 | RE3/PMA8 — GPIO / PMP address |
| Chân 75 | RE4/PMA13 — GPIO / PMP address |
| Chân 76 | VBUS — USB VBUS detect input |
| Chân 77 | USB+ — USB differential data plus |
| Chân 78 | USB- — USB differential data minus |
| Chân 79 | VUSB — USB internal regulator output |
| Chân 80 | RF0 — GPIO |
| Chân 81 | RF1 — GPIO |
| Chân 82 | RF2/SCK2 — GPIO / SPI2 clock |
| Chân 83 | RF3/SDI2 — GPIO / SPI2 data in |
| Chân 84 | RF4/SDO2 — GPIO / SPI2 data out |
| Chân 85 | RF5/SDA2 — GPIO / I2C2 data |
| Chân 86 | RF6/SCL2 — GPIO / I2C2 clock |
| Chân 87 | RF7 — GPIO |
| Chân 88 | RF8 — GPIO |
| Chân 89 | VSS — Digital ground |
| Chân 90 | VDD — Digital supply 2.3-3.6 V |
| Chân 91 | RG6/SDO1 — GPIO / SPI1 data out (alternate) |
| Chân 92 | RG7/SDI1 — GPIO / SPI1 data in (alternate) |
| Chân 93 | RG8/SCK1 — GPIO / SPI1 clock (alternate) |
| Chân 94 | RG9/SDA2 — GPIO / I2C2 data (alternate) |
| Chân 95 | TCK — JTAG clock |
| Chân 96 | TMS — JTAG mode select |
| Chân 97 | TDI — JTAG data in |
| Chân 98 | TDO — JTAG data out |
| Chân 99 | RTCC/RC13 — GPIO / RTCC output |
| Chân 100 | SOSCO/RF13 — Secondary oscillator output (32.768 kHz) |
Ứng dụng tiêu biểu
PIC32MX320F128LT-80V/PT phù hợp cho 6 Áp dụngs: Industrial Automation Controllers, USB Device and Embedded Host Products, Graphical User Interfaces with TFT/PMP Displays, Consumer Appliances and Home Devices, Sensor Aggregation and IoT Edge Nodes, Legacy PIC24/PIC18 Migration Designs.
Industrial Automation Controllers
The PIC32MX320F128LT-80V/PT fits industrial automation controllers because its 80 MHz MIPS32 M4K core, 128 KB Flash, and 16 KB SRAM run real-time control loops while its -40 C to +105 C 'V' grade survives unventilated factory cabinets. The 16-channel 10-bit ADC scans sensor inputs at up to 500 ksps and the 16-channel DMA controller offloads repetitive transfers from the CPU. Industrial designers typically pair this MCU with RS-485 transceivers and isolated digital inputs, replacing PLC slices in cost-sensitive sub-100-dollar control nodes.
Được đề xuất
USB Device and Embedded Host Products
The PIC32MX320F128LT-80V/PT integrates USB 2.0 full-speed On-The-Go, eliminating the need for an external USB controller in mass-storage, HID, CDC, or vendor-class peripherals. With 128 KB Flash and 80 MHz performance it runs the Microchip USB stack alongside an application, and the 16 KB SRAM holds USB descriptors plus application buffers. Typical applications include USB-to-UART bridges, custom HID controls, USB mass-storage devices, and embedded host stacks that read USB flash drives or HID peripherals.
Được đề xuất
Graphical User Interfaces with TFT/PMP Displays
The PIC32MX320F128LT-80V/PT's 16-bit Parallel Master Port (PMP) drives small TFT panels directly from the 100-pin TQFP without external graphics controllers, while 85 GPIO plus DMA accelerate frame-buffer transfers. At 80 MHz and 16 KB SRAM, it can sustain modest animations on 320x240 QVGA panels using 8-bit or 16-bit parallel interfaces. This suits cost-sensitive GUIs on appliances, instrument front panels, and entry-level HMI screens.
Được đề xuất
Consumer Appliances and Home Devices
The PIC32MX320F128LT-80V/PT serves consumer appliances and home devices because its 80 MHz MIPS core, 128 KB Flash, USB OTG, and -40 C to +105 C extended grade support smart features like connectivity, touch interfaces, and motor control in washing machines, HVAC controllers, or coffee machines. The integrated 10-bit ADC reads thermistors and pressure sensors, the 5V-tolerant I/O interfaces legacy 5V display panels, and the DMA channels relieve the CPU when running user-interface graphics and communication stacks in parallel.
Được đề xuất
Sensor Aggregation and IoT Edge Nodes
The PIC32MX320F128LT-80V/PT functions as an IoT edge node aggregating multiple analog and digital sensors, exploiting the 16-channel 10-bit ADC and DMA to sample without CPU intervention. The two UART, two I2C, and two SPI interfaces connect to sensors (temperature, accelerometer, environmental) and radios (Wi-Fi, LoRa, Bluetooth modules). With 128 KB Flash and 80 MHz it can run local filtering and MQTT publish cycles, while the 'V' temperature grade supports outdoor enclosures.
Được đề xuất
Legacy PIC24/PIC18 Migration Designs
The PIC32MX320F128LT-80V/PT is the most common upgrade path for engineers migrating from 8-bit PIC18 or 16-bit PIC24 designs that have outgrown their original part. The 32-bit MIPS32 M4K core delivers 5-10x the compute per MHz, while the peripheral register map and pinout philosophy closely mirror PIC24, easing firmware ports. The 100-pin TQFP layout matches existing PIC24FJ/PIC24HJ footprints, so PCB redesign is unnecessary - only the firmware, startup code, and interrupt vectors need updating.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX320F128LT-80V/PT — 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 | PIC32MX320F128LT-80I/PT | PIC32MX320F128L-80V/PT | PIC32MX320F128L-80V/BG | PIC32MX360F512LT-80I/PT | PIC32MX430F064L-80V/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-100 (PT) 12x12 mm | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash | 128 KB | 128 KB | 128 KB | 128 KB | 512 KB (+300%) | 64 KB (-50%) |
| SRAM | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB (+100%) | 16 KB |
| Core Speed | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Operating Temperature | -40 C to +105 C (V) | -40 C to +85 C (I) | -40 C to +105 C (V) | -40 C to +105 C (V) | -40 C to +85 C (I) | -40 C to +105 C (V) |
| ADC | 10-bit, 16 channels | 10-bit, 16 channels | 10-bit, 16 channels | 10-bit, 16 channels | 10-bit, 16 channels | 12-bit, 13 channels (higher precision) |
| USB | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS Host + OTG |
| Core | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
Bảo phân biệt quan trọng
- Extended industrial -40 C to +105 C temperature grade (vsPIC32MX320F128LT-80I/PT)
- Balanced Flash/RAM ratio for RTOS and USB stacks (vsPIC32MX430F064L-80V/PT)
- USB OTG integrated (no external transceiver needed) (vsPIC32MX340F512H-80V/PT)
- Established TQFP-100 footprint compatible with PIC24 migration (vsPIC32MX274F256DT-I/PT (TQFP-64 only))
Ghi chú thiết kế
Decouple VDD/VSS pairs with at least 100 nF (X7R ceramic) and 1 uF (X5R) within 5 mm of each VDD pin; place them on the same layer as the IC to minimize parasitic inductance. The 100-pin TQFP has multiple VDD/VSS pairs distributed around the package for low-impedance power distribution - skip a pair only if your layout is impossible, but ensure every VDD pin has at least one bypass capacitor. The internal USB voltage regulator at VUSB requires a 100 nF + 4.7 uF filter network if USB is used.
The 100-pin TQFP package has a thermal resistance of approximately 65 C/W (theta-JA), so a 1 W power dissipation creates a 65 C junction temperature rise above ambient. The PIC32MX320F128LT-80V/PT typically dissipates less than 200 mW in normal operation, but at high core load (80 MHz with most peripherals active) it can reach 300-400 mW. For 'V' grade parts operating at +105 C ambient, ensure total system dissipation stays below 100 mW or the die temperature may exceed the rated +125 C maximum junction.
Route the 32.768 kHz secondary oscillator (SOSCO/SOSCI) traces as short, symmetric traces enclosed by a ground guard ring to minimize coupling from switching noise. Separate analog inputs (AN0-AN15) from digital switching lines by at least 3x the trace-to-trace spacing, and connect AVSS to the same ground plane as VSS with a single tie-point near the IC. The exposed pad variant (if present) should be soldered to a ground pour for thermal spreading.
Do not configure unused pins as floating inputs - they consume leakage current and act as noise antennas. Default all unused pins to outputs with logic-low or to inputs with the internal pull-up enabled. When migrating from PIC24/PIC18, remember that the PIC32 configuration bits differ from PIC24 and that the device ID register is at a different address; using the wrong peripheral library header produces subtle bugs that are hard to debug. Also note that PIC32MX code typically runs from the same Flash addresses after reset, so startup code and bootloader configuration must match the chosen memory map.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Lead-free matte-tin finish. Not AEC-Q100 qualified - automotive applications should use AEC-Q100-qualified PIC32MX variants or dsPIC33 devices. Conflict-mineral declaration available on request from Microchip.
