PIC32MX320F128LT-80I/PT - 80MHz 32-bit MCU 128KB Flash | Microchip
Référence : PIC32MX320F128LT-80I/PT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $7.42 | $7,42 |
| 10 | $6.68 | $66,80 |
| 100 | $5.94 | $594,00 |
| 500 | $5.32 | $2 660,00 |
| 1 000 | $4.78 | $4 780,00 |
PIC32MX320F128LT-80I/PT Présentation
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.
Alternatives de remplacement direct pour PIC32MX320F128LT-80I/PT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC32MX320F128LT-80I/PT (même facteur de forme et même empreinte) — différant par Package, Timers, ADC, Core Architecture, Operating Temperature.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC32MX320F128L-80I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC32MX320F128LT-80V/PT
✅ Remplacement direct✓ En stock
$4.75 / unité
Voir la fiche technique →PIC32MX360F512L-80I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC32MX340F128L-80I/PT
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC32MX230F128L-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC32MX270F512L-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC32MX320F128LT-80I/PT Valeurs maximales et caractéristiques électriques
| 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 |
| Boîtier | 100-pin TQFP (12x12 mm) |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Température de fonctionnement | -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) |
| Type de montage | Surface Mount |
| Packaging | Tape and Reel ("T" suffix) |
| Statut RoHS | Compliant |
Configuration des broches de PIC32MX320F128LT-80I/PT
| Broche 1 | RG15 — General purpose I/O |
| Broche 2 | VDD — Supply voltage |
| Broche 3 | RB5/PMD5 — I/O / PMP data line 5 |
| Broche 4 | RB4/PMD4 — I/O / PMP data line 4 |
| Broche 5 | RB3/PMD3 — I/O / PMP data line 3 |
| Broche 6 | RB2/PMD2 — I/O / PMP data line 2 |
| Broche 7 | RB1/PMD1 — I/O / PMP data line 1 |
| Broche 8 | RB0/PMD0 — I/O / PMP data line 0 |
| Broche 9 | RB6/PGEC2 — I/O / Programming clock 2 |
| Broche 10 | RB7/PGED2 — I/O / Programming data 2 |
| Broche 11 | VSS — Ground |
| Broche 12 | RA14 — General purpose I/O |
| Broche 13 | RA15 — General purpose I/O |
| Broche 14 | VDD — Supply voltage |
| Broche 15 | RF0 — General purpose I/O |
| Broche 16 | RF1 — General purpose I/O |
| Broche 17 | RG6 — General purpose I/O |
| Broche 18 | RG7 — General purpose I/O |
| Broche 19 | RG8 — General purpose I/O |
| Broche 20 | RG9 — General purpose I/O |
| Broche 21 | VSS — Ground |
| Broche 22 | RA0 — General purpose I/O |
| Broche 23 | RA1 — General purpose I/O |
| Broche 24 | RA2 — General purpose I/O |
| Broche 25 | RA3 — General purpose I/O |
| Broche 26 | RA4 — General purpose I/O |
| Broche 27 | RA5 — General purpose I/O |
| Broche 28 | RD14 — General purpose I/O |
| Broche 29 | RD15 — General purpose I/O |
| Broche 30 | VSS — Ground |
| Broche 31 | VDD — Supply voltage |
| Broche 32 | RC1 — General purpose I/O |
| Broche 33 | RC2 — General purpose I/O |
| Broche 34 | RC3 — General purpose I/O |
| Broche 35 | RC4 — General purpose I/O |
| Broche 36 | VDD — Supply voltage |
| Broche 37 | RD0 — General purpose I/O |
| Broche 38 | RD1 — General purpose I/O |
| Broche 39 | RD2 — General purpose I/O |
| Broche 40 | RD3 — General purpose I/O |
| Broche 41 | RD4 — General purpose I/O |
| Broche 42 | RD5 — General purpose I/O |
| Broche 43 | RD6 — General purpose I/O |
| Broche 44 | RD7 — General purpose I/O |
| Broche 45 | VSS — Ground |
| Broche 46 | RC14 — General purpose I/O |
| Broche 47 | RC15 — General purpose I/O |
| Broche 48 | RG0 — General purpose I/O |
| Broche 49 | RG1 — General purpose I/O |
| Broche 50 | VSS — Ground |
| Broche 51 | RB8 — General purpose I/O |
| Broche 52 | RB9 — General purpose I/O |
| Broche 53 | RB10 — General purpose I/O |
| Broche 54 | RB11 — General purpose I/O |
| Broche 55 | RB12 — General purpose I/O |
| Broche 56 | RB13 — General purpose I/O |
| Broche 57 | RB14 — General purpose I/O |
| Broche 58 | RB15 — General purpose I/O |
| Broche 59 | RF4 — General purpose I/O |
| Broche 60 | RF5 — General purpose I/O |
| Broche 61 | RF3 — General purpose I/O |
| Broche 62 | VSS — Ground |
| Broche 63 | RF2 — General purpose I/O |
| Broche 64 | VDD — Supply voltage |
| Broche 65 | RD8 — General purpose I/O |
| Broche 66 | RD9 — General purpose I/O |
| Broche 67 | RD10 — General purpose I/O |
| Broche 68 | RD11 — General purpose I/O |
| Broche 69 | RD12 — General purpose I/O |
| Broche 70 | RD13 — General purpose I/O |
| Broche 71 | VSS — Ground |
| Broche 72 | RC12 — General purpose I/O |
| Broche 73 | RC13 — General purpose I/O |
| Broche 74 | RC0 — General purpose I/O |
| Broche 75 | RG2 — General purpose I/O |
| Broche 76 | RG3 — General purpose I/O |
| Broche 77 | RG12 — General purpose I/O |
| Broche 78 | RG13 — General purpose I/O |
| Broche 79 | RG14 — General purpose I/O |
| Broche 80 | VDD — Supply voltage |
| Broche 81 | RA9 — General purpose I/O |
| Broche 82 | RA10 — General purpose I/O |
| Broche 83 | RA11 — General purpose I/O |
| Broche 84 | RA12 — General purpose I/O |
| Broche 85 | RA13 — General purpose I/O |
| Broche 86 | RA6 — General purpose I/O |
| Broche 87 | RA7 — General purpose I/O |
| Broche 88 | VSS — Ground |
| Broche 89 | RC5 — General purpose I/O |
| Broche 90 | RC6 — General purpose I/O |
| Broche 91 | RC7 — General purpose I/O |
| Broche 92 | RC8 — General purpose I/O |
| Broche 93 | RC9 — General purpose I/O |
| Broche 94 | RF6 — General purpose I/O |
| Broche 95 | RF7 — General purpose I/O |
| Broche 96 | RF8 — General purpose I/O |
| Broche 97 | VDD — Supply voltage |
| Broche 98 | OSC1/CLKI/RC12 — Crystal oscillator input / external clock input |
| Broche 99 | OSC2/CLKO/RC15 — Crystal oscillator output / clock output |
| Broche 100 | VSS — Ground |
Applications typiques
PIC32MX320F128LT-80I/PT convient pour 7 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC32MX320F128LT-80I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Highest pin count variant of the PIC32MX320 family (vs PIC32MX320F064H-40I/PT)
- Drop-in upgrade path to PIC32MX360 with 4x Flash (vs PIC32MX360F512L-80I/PT)
- Industrial temperature grade with no automotive premium (vs PIC32MX340F128L-80I/PT (USB variant))
Notes de conception
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.
Informations de conformité
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.
