PIC32MX320F128LT-80I/PT - 80MHz 32-bit MCU 128KB Flash | Microchip
MPN: PIC32MX320F128LT-80I/PT ✓ Hoạt độngPIC32MX320F128LT-80I/PT Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable I/O peripherals. The PIC32MX320 family occupies the entry point of Microchip's 32-bit MIPS-based portfolio, sitting architecturally between 8-bit PIC16/PIC18 MCUs and higher-end Cortex-M devices. The MIPS32 M4K core delivers 1.56 DMIPS/MHz performance with single-cycle multiplication and hardware multiply-accumulate support, enabling deterministic real-time control.
Key features include 128 KB Flash, 32 KB SRAM, up to 85 general-purpose I/O pins, five 16-bit timers/counters, two I2C and two SPI modules, two UART modules with IrDA support, a parallel master port (PMP), a 16-channel 10-bit ADC at up to 500 ksps, and a real-time clock/calendar with calendar mode. The ICSP debug interface is supported via PGECx/PGEDx pins, enabling in-circuit programming and debugging with MPLAB tools.
The PIC32MX320F128LT-80I/PT operates from 2.3V to 3.6V and includes a 5V tolerant digital I/O structure. Internal DMA eliminates CPU overhead for data movement, while hardware CRC and PMP accelerate memory-mapped peripheral interfacing. The 100-pin TQFP package exposes nearly the full peripheral set simultaneously, ideal for graphics, USB-device (via on-chip transceiver-less interface), or industrial control hubs.
Typical applications include industrial automation controllers, HVAC control boards, point-of-sale terminals, medical instrumentation, multi-axis motor control pre-processors, low-power HMI displays, and consumer appliances requiring 32-bit performance with 8-bit-style simplicity. The PMP makes it a cost-effective graphics controller for STN/TFT displays in HMI panels.
When designing with this part, allocate decoupling capacitance (100 nF + 10 uF bulk) near each VDD/VDD/VSS pin pair and follow Microchip's recommended analog/digital ground split for ADC accuracy. The 80 MHz operation typically demands a 4-layer PCB for signal integrity on the external memory bus, if used.
This page synthesizes distributor pricing, drop-in PIC32MX3XX/4XX family alternatives, and design notes that complement the Microchip datasheet without repeating it verbatim.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX320F128LT-80I/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-80I/PT (cùng hình factor và footprint) — khác nhau ở Package, Timers, ADC, Core Architecture, Operating Temperature.
PIC32MX320F128L-80I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX320F128LT-80V/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX360F512L-80I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX340F128L-80I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX230F128L-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX270F512L-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX320F128LT-80I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Speed | 80 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| Data Memory (SRAM) | 32 KB |
| Number of I/O Pins | 85 |
| Hộp | 100-pin TQFP (12x12 mm) |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| ADC | 10-bit, up to 16 channels, 500 ksps |
| Timers | Five 16-bit timers/counters |
| UART Modules | 2 (with IrDA support) |
| SPI Modules | 2 |
| I2C Modules | 2 |
| Parallel Master Port (PMP) | Yes |
| DMA Channels | Yes (integrated DMA controller) |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tape and Reel ("T" suffix) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC32MX320F128LT-80I/PT
| Chân 1 | RG15 — General purpose I/O |
| Chân 2 | VDD — Supply voltage |
| Chân 3 | RB5/PMD5 — I/O / PMP data line 5 |
| Chân 4 | RB4/PMD4 — I/O / PMP data line 4 |
| Chân 5 | RB3/PMD3 — I/O / PMP data line 3 |
| Chân 6 | RB2/PMD2 — I/O / PMP data line 2 |
| Chân 7 | RB1/PMD1 — I/O / PMP data line 1 |
| Chân 8 | RB0/PMD0 — I/O / PMP data line 0 |
| Chân 9 | RB6/PGEC2 — I/O / Programming clock 2 |
| Chân 10 | RB7/PGED2 — I/O / Programming data 2 |
| Chân 11 | VSS — Ground |
| Chân 12 | RA14 — General purpose I/O |
| Chân 13 | RA15 — General purpose I/O |
| Chân 14 | VDD — Supply voltage |
| Chân 15 | RF0 — General purpose I/O |
| Chân 16 | RF1 — General purpose I/O |
| Chân 17 | RG6 — General purpose I/O |
| Chân 18 | RG7 — General purpose I/O |
| Chân 19 | RG8 — General purpose I/O |
| Chân 20 | RG9 — General purpose I/O |
| Chân 21 | VSS — Ground |
| Chân 22 | RA0 — General purpose I/O |
| Chân 23 | RA1 — General purpose I/O |
| Chân 24 | RA2 — General purpose I/O |
| Chân 25 | RA3 — General purpose I/O |
| Chân 26 | RA4 — General purpose I/O |
| Chân 27 | RA5 — General purpose I/O |
| Chân 28 | RD14 — General purpose I/O |
| Chân 29 | RD15 — General purpose I/O |
| Chân 30 | VSS — Ground |
| Chân 31 | VDD — Supply voltage |
| Chân 32 | RC1 — General purpose I/O |
| Chân 33 | RC2 — General purpose I/O |
| Chân 34 | RC3 — General purpose I/O |
| Chân 35 | RC4 — General purpose I/O |
| Chân 36 | VDD — Supply voltage |
| 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 | VSS — Ground |
| Chân 46 | RC14 — General purpose I/O |
| Chân 47 | RC15 — General purpose I/O |
| Chân 48 | RG0 — General purpose I/O |
| Chân 49 | RG1 — General purpose I/O |
| Chân 50 | VSS — Ground |
| Chân 51 | RB8 — General purpose I/O |
| Chân 52 | RB9 — General purpose I/O |
| Chân 53 | RB10 — General purpose I/O |
| Chân 54 | RB11 — General purpose I/O |
| Chân 55 | RB12 — General purpose I/O |
| Chân 56 | RB13 — General purpose I/O |
| Chân 57 | RB14 — General purpose I/O |
| Chân 58 | RB15 — General purpose I/O |
| Chân 59 | RF4 — General purpose I/O |
| Chân 60 | RF5 — General purpose I/O |
| Chân 61 | RF3 — General purpose I/O |
| Chân 62 | VSS — Ground |
| Chân 63 | RF2 — General purpose I/O |
| Chân 64 | VDD — Supply voltage |
| Chân 65 | RD8 — General purpose I/O |
| Chân 66 | RD9 — General purpose I/O |
| Chân 67 | RD10 — General purpose I/O |
| Chân 68 | RD11 — General purpose I/O |
| Chân 69 | RD12 — General purpose I/O |
| Chân 70 | RD13 — General purpose I/O |
| Chân 71 | VSS — Ground |
| Chân 72 | RC12 — General purpose I/O |
| Chân 73 | RC13 — General purpose I/O |
| Chân 74 | RC0 — General purpose I/O |
| Chân 75 | RG2 — General purpose I/O |
| Chân 76 | RG3 — General purpose I/O |
| Chân 77 | RG12 — General purpose I/O |
| Chân 78 | RG13 — General purpose I/O |
| Chân 79 | RG14 — General purpose I/O |
| Chân 80 | VDD — Supply voltage |
| Chân 81 | RA9 — General purpose I/O |
| Chân 82 | RA10 — General purpose I/O |
| Chân 83 | RA11 — General purpose I/O |
| Chân 84 | RA12 — General purpose I/O |
| Chân 85 | RA13 — General purpose I/O |
| Chân 86 | RA6 — General purpose I/O |
| Chân 87 | RA7 — General purpose I/O |
| Chân 88 | VSS — Ground |
| Chân 89 | RC5 — General purpose I/O |
| Chân 90 | RC6 — General purpose I/O |
| Chân 91 | RC7 — General purpose I/O |
| Chân 92 | RC8 — General purpose I/O |
| Chân 93 | RC9 — General purpose I/O |
| Chân 94 | RF6 — General purpose I/O |
| Chân 95 | RF7 — General purpose I/O |
| Chân 96 | RF8 — General purpose I/O |
| Chân 97 | VDD — Supply voltage |
| Chân 98 | OSC1/CLKI/RC12 — Crystal oscillator input / external clock input |
| Chân 99 | OSC2/CLKO/RC15 — Crystal oscillator output / clock output |
| Chân 100 | VSS — Ground |
Ứng dụng tiêu biểu
PIC32MX320F128LT-80I/PT phù hợp cho 7 Áp dụngs: Industrial Automation Controller, HVAC Control Board, Point-of-Sale (POS) Terminal, Medical Instrumentation, Human-Machine Interface (HMI) Display, Multi-axis Motor Control Pre-processor, Consumer Appliance Control.
Industrial Automation Controller
The PIC32MX320F128LT-80I/PT fits industrial automation controllers thanks to its 80 MHz MIPS32 M4K core delivering deterministic 32-bit performance for PLC scan loops, and 85 I/O pins that handle multiple sensor inputs and actuator outputs without external GPIO expanders. The 128 KB Flash accommodates IEC 61131-3 style firmware with field-device drivers, while 32 KB SRAM supports TCP/IP or Modbus TCP stack buffers. Industrial -40C to +85C rating handles cabinet environments. Five 16-bit timers enable precise PWM for motor and valve control. The PIC32MX320F128LT-80I/PT is pin-compatible with the rest of the PIC32MX3XX/4XX family, allowing easy upgrade to PIC32MX360 when more Flash is needed.
Được đề xuất
HVAC Control Board
The PIC32MX320F128LT-80I/PT suits HVAC control boards because its 10-bit ADC samples up to 16 analog channels (temperature, pressure, airflow sensors) at 500 ksps, while 85 I/O pins drive relays, triacs, and status LEDs without external muxing. The 80 MHz MIPS core runs PID loops for compressor and blower control with deterministic scheduling. Industrial -40C to +85C operation covers rooftop and basement installations. Two UARTs allow simultaneous Modbus connection to a building management system and a local HMI. PMP and DMA support a small graphics LCD for local user interface, eliminating a separate display controller chip in cost-sensitive designs.
Được đề xuất
Point-of-Sale (POS) Terminal
The PIC32MX320F128LT-80I/PT is appropriate for entry-level POS terminals where 32-bit performance, 128 KB Flash, and 32 KB SRAM cover application firmware plus small TCP/IP stacks. The PMP drives character LCDs or small graphic displays for cashier interfaces, while UARTs connect to magnetic-stripe readers, barcode scanners, and thermal receipt printers. DMA offloads printer data movement, freeing CPU cycles for transaction processing. Industrial temperature rating supports retail back-room environments. The 100-pin TQFP exposes ample I/O for keypad scanning (8x8 matrix) and peripheral expansion. For higher-end POS, upgrade to PIC32MX360F512L for additional Flash capacity.
Được đề xuất
Medical Instrumentation
The PIC32MX320F128LT-80I/PT powers non-life-critical medical instrumentation such as benchtop analyzers, infusion-pump controllers, and patient monitors where its 10-bit ADC samples sensor signals with adequate resolution for trend monitoring. The MIPS32 M4K core's deterministic interrupt latency suits IEC 62304 software class B requirements when paired with proper firmware structure. The 100-pin TQFP exposes interfaces to displays, keypads, and audio alarms. Industrial -40C to +85C supports clinical environments. Note: this part is not FDA-cleared; final medical device qualification is the OEM's responsibility.
Được đề xuất
Human-Machine Interface (HMI) Display
The PIC32MX320F128LT-80I/PT is well-suited as an HMI controller for small TFT/STN graphic displays because its Parallel Master Port (PMP) directly drives common 8-bit and 16-bit LCD interfaces without external logic, while DMA moves frame-buffer data with no CPU overhead. The 80 MHz MIPS core handles on-screen graphics rendering, button debouncing, and communication stacks simultaneously. 128 KB Flash stores fonts and bitmaps; 32 KB SRAM holds partial frame buffers. Two SPI channels support touch-screen controllers and external Flash for additional graphics assets. Industrial temperature rating supports factory-floor HMIs.
Được đề xuất
Multi-axis Motor Control Pre-processor
The PIC32MX320F128LT-80I/PT acts as a motor-control command pre-processor in multi-axis systems, offloading trajectory planning from a higher-level CPU. Five 16-bit timers generate synchronized PWM references for downstream gate drivers, while DMA handles encoder feedback capture with deterministic latency. The 80 MHz MIPS32 core executes field-oriented control (FOC) math at the 10-20 kHz loop rates needed for BLDC and PMSM motors. UARTs and SPI connect to isolated communication buses (RS-485, CAN via external controller). The 100-pin TQFP package supports the required pin count for multi-axis expansion with spare GPIO for diagnostics.
Được đề xuất
Consumer Appliance Control
The PIC32MX320F128LT-80I/PT is appropriate for consumer appliances (washing machines, dishwashers, ovens, refrigerators) where 32-bit performance handles user-interface logic, sensor fusion, and motor sequence control in one chip. The 85 I/O pins drive segmented LCD or LED displays, button matrices, and multiple triac/relay outputs without expanders. ADC channels monitor temperature, water level, and motor current. Industrial temperature rating covers under-cabinet and laundry-room heat exposure. The 128 KB Flash stores product variants and diagnostic logs; 32 KB SRAM supports small UI buffers. Cost-optimized family migration paths exist to PIC32MX230 at lower speeds or PIC32MX360 at higher Flash.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX320F128LT-80I/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 | PIC32MX320F128L-80I/PT | PIC32MX360F512L-80I/PT | PIC32MX230F128L-I/PT | PIC32MX340F128L-80I/PT | PIC32MX270F512L-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-pin TQFP (12x12 mm) | 100-pin TQFP - same | 100-pin TQFP - same | 100-pin TQFP - same | 100-pin TQFP - same | 100-pin TQFP - same |
| Maximum CPU Speed | 80 MHz | 80 MHz | 80 MHz | 50 MHz | 80 MHz | 50 MHz |
| Flash Memory | 128 KB | 128 KB | 512 KB | 128 KB | 128 KB | 512 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 64 KB |
| USB | No | No | No | No | Yes (USB OTG) | Yes (USB OTG) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Packaging Form | Tape and Reel | Tray | Tray | Tray | Tray | Tray |
Bảo phân biệt quan trọng
- Highest pin count variant of the PIC32MX320 family (vsPIC32MX320F064H-40I/PT)
- Drop-in upgrade path to PIC32MX360 with 4x Flash (vsPIC32MX360F512L-80I/PT)
- Industrial temperature grade with no automotive premium (vsPIC32MX340F128L-80I/PT (USB variant))
Ghi chú thiết kế
Place a 10 uF bulk capacitor and a 100 nF decoupling capacitor within 5 mm of each VDD/VSS pin pair on the PIC32MX320F128LT-80I/PT. With 12 VDD pins across the 100-pin TQFP, distribute the bulk capacitance evenly rather than clustering it near one corner. Use a ferrite bead on the analog VDD rail (AVDD) if available on the pinout, and separate analog ground (AVSS) from digital VSS with a star-ground connection under the MCU. The internal voltage regulator for the core draws transient current on the order of 50-80 mA during 80 MHz operation; inadequate bulk capacitance produces VDD sag and oscillator instability.
Route the 80 MHz system clock traces (OSC1/OSC2) as short, length-matched differential-style traces with a continuous ground pour underneath. Keep the crystal within 5 mm of the MCU and surround it with a ground guard ring. The 100-pin TQFP at 12x12 mm has a 0.5 mm pitch, which is fine for 4-layer PCB manufacturing but requires 0.2-0.25 mm via-in-pad for any BGA escape - not relevant here, but the same impedance discipline applies to the parallel master port (PMP) data/address bus. Provide a 4-layer stackup with dedicated power and ground planes for any design using PMP at full bus speed.
Do not exceed 3.6V on any VDD pin; the PIC32MX320 is a 2.3V-3.6V part, not 5V tolerant on VDD (only the digital I/O pins tolerate 5V input). When migrating from PIC32MX320 to PIC32MX360 or PIC32MX270, verify the peripheral library mapping - some peripheral registers are at different addresses across families even though the pinout is compatible. The 10-bit ADC requires the acquisition time to be configured for the source impedance; with high-impedance sensors (>5 kOhm) increase ACQT to avoid inaccurate conversions. Avoid placing the MCU directly above switching regulator inductors to prevent conducted EMI coupling into the ADC reference.
Reserve the PGECx/PGEDx pins as dedicated debug pins even in production designs; routing them through test pads or zero-ohm resistors adds field-reprogramming capability at minimal BOM cost. The ICSP interface on PIC32MX320F128LT-80I/PT uses PGEC2/PGED2 (RB6/RB7) by default, but PGEC1/PGED1 (RG14/RG15) is also supported. Use Microchip's recommended 4.7 kOhm pull-up on MCLR and a 100 nF cap on MCLR for proper reset behavior. Place the MCLR reset capacitor as close as physically possible to the MCU to avoid EMI-induced resets.
Thông tin tuân thủ
Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified; not suitable for automotive safety-critical applications. RoHS and REACH compliant per Microchip product page; lead-free reflow-compatible.
