PIC32MX460F256LT-80V/PT - 80MHz 32-bit MCU 256KB Flash USB-OTG | Microchip
MPN: PIC32MX460F256LT-80V/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.55 | $8.55 |
| 10 | $7.74 | $77.40 |
| 100 | $6.84 | $684.00 |
| 500 | $6.2 | $3,100.00 |
| 1,000 | $5.71 | $5,710.00 |
PIC32MX460F256LT-80V/PT Overview
What is a PIC32MX microcontroller? PIC32MX is Microchip's MIPS32 M4K-based 32-bit MCU family that bridges 8/16-bit PIC and 32-bit ARM-class performance. It executes one instruction per cycle plus single-cycle MAC, Harvard cache, and DSP extensions. In the taxonomy: PIC32MX -> 32-bit microcontroller -> MIPS M4K core -> embedded processor -> semiconductor. Its role is system orchestration, glue logic, and DSP tasks for cost-sensitive embedded products.
Key features: 80 MHz core, 256 KB Flash (256K x 8), 32 KB SRAM, USB-OTG full-speed (12 Mbps), 85 I/O pins, 16-channel 10-bit ADC up to 1 Msps, two I2C, two UART, two SPI, PMP, RTCC, 5 16-bit timers, 5 input-capture and 5 output-compare, and JTAG + 2-wire ICSP debug. The 'T' suffix denotes tape-and-reel and 'V' denotes the 2.0 V-3.6 V extended operating range; 'PT' is the 100-pin TQFP.
Architecturally the part uses 5-stage pipeline M4K core with separate 16 KB instruction / 4 KB data caches, prefetch module, and dedicated DMA into USB and PMP. Peripherals are mapped on Microchip's peripheral-libraries-compatible PPS that simplifies pin mapping on TQFP packages.
Typical applications are USB peripherals (HID, CDC, MSD, audio class), embedded graphical interfaces driving QVGA TFT panels, industrial sensing nodes with 10-bit ADC, and PIC-tailored IoT gateways integrating TCP/IP via Microchip's TCP/IP stack.
Design note - the 80 MHz rating is achievable with the on-chip 8 MHz FRC plus 10x PLL; ensure the PLL loop-filter layout per datasheet and respect VDD 2.3 V-3.6 V when designing analog references.
This page consolidates distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC32MX460F256LT-80V/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC32MX460F256LT-80V/PT (same form factor and footprint) — differing in ADC, Core Architecture, Package, Timers, MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX460F256L-80V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX460F256LT-80I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX450F256L-V/PF
✅ Drop-In✓ In Stock
$4.85 / Unit
View Datasheet →PIC32MX360F256L-80V/PT
✅ Drop-In✓ In Stock
$5.78 / Unit
View Datasheet →PIC32MX460F512LT-80V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX440F256HT-80I/PT
✅ Drop-In✓ In Stock
$6.2 / Unit
View Datasheet →PIC32MX340F128H-80V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX460F256LT-80V/PT Maximum Ratings & Electrical Characteristics
| Core | MIPS32 M4K |
| Core Architecture | 32-bit RISC |
| Maximum Clock Speed | 80 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| RAM | 32 KB (32K x 8) |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Number of I/O | 85 |
| ADC | 10-bit, 16-channel |
| USB | USB-OTG Full-Speed (12 Mbps) |
| Communication Interfaces | 2x UART, 2x SPI, 2x I2C, PMP |
| Timers | 5x 16-bit |
| Input Capture / Output Compare | 5 / 5 |
| Oscillator | Internal |
| Package | 100-pin TQFP (PT), 12x12 mm |
| Mounting Type | Surface Mount |
| MSL Level | 3 |
| Lead-Free / RoHS | Yes / Lead-free (finish type per datasheet) |
PIC32MX460F256LT-80V/PT Pin Configuration
| Pin 1 | RG15 — General purpose I/O / PWM |
| Pin 2 | RG14 — General purpose I/O |
| Pin 3 | VDD — Supply voltage 2.3V-3.6V |
| Pin 4 | VSS — Ground |
| Pin 5 | RA0 — General purpose I/O / analog input AN0 |
| Pin 6 | RA1 — General purpose I/O / analog input AN1 |
| Pin 7 | RA2 — General purpose I/O / analog input AN2 |
| Pin 8 | RA3 — General purpose I/O / analog input AN3 |
| Pin 9 | RA4 — General purpose I/O / analog input AN4 |
| Pin 10 | RA5 — General purpose I/O / analog input AN5 |
| Pin 11 | VSS — Ground |
| Pin 12 | RA6 — General purpose I/O / analog input AN6 |
| Pin 13 | RA7 — General purpose I/O / analog input AN7 |
| Pin 14 | RB0 — General purpose I/O / PGED1 programming data |
| Pin 15 | RB1 — General purpose I/O / PGEC1 programming clock |
| Pin 16 | RB2 — General purpose I/O / analog input AN8 |
| Pin 17 | RB3 — General purpose I/O / analog input AN9 |
| Pin 18 | RB4 — General purpose I/O / analog input AN10 |
| Pin 19 | RB5 — General purpose I/O / analog input AN11 |
| Pin 20 | RB6 — General purpose I/O / PGED2 |
| Pin 21 | RB7 — General purpose I/O / PGEC2 |
| Pin 22 | RB8 — General purpose I/O / analog input AN12 |
| Pin 23 | RB9 — General purpose I/O / analog input AN13 |
| Pin 24 | RB10 — General purpose I/O / analog input AN14 |
| Pin 25 | RB11 — General purpose I/O / analog input AN15 |
| Pin 26 | VSS — Ground |
| Pin 27 | VDD — Supply voltage 2.3V-3.6V |
| Pin 28 | RB12 — General purpose I/O |
| Pin 29 | RB13 — General purpose I/O |
| Pin 30 | RB14 — General purpose I/O |
| Pin 31 | RB15 — General purpose I/O / OCFB |
| Pin 32 | RC0 — General purpose I/O |
| Pin 33 | RC1 — General purpose I/O |
| Pin 34 | RC2 — General purpose I/O |
| Pin 35 | RC3 — General purpose I/O |
| Pin 36 | RC4 — General purpose I/O |
| Pin 37 | RC5 — General purpose I/O |
| Pin 38 | RC6 — General purpose I/O |
| Pin 39 | RC7 — General purpose I/O |
| Pin 40 | RC8 — General purpose I/O |
| Pin 41 | RC9 — General purpose I/O |
| Pin 42 | VSS — Ground |
| Pin 43 | VDD — Supply voltage 2.3V-3.6V |
| Pin 44 | RC10 — General purpose I/O |
| Pin 45 | RC11 — General purpose I/O |
| Pin 46 | RC12 — General purpose I/O |
| Pin 47 | RC13 — General purpose I/O |
| Pin 48 | RC14 — General purpose I/O |
| Pin 49 | RC15 — General purpose I/O |
| Pin 50 | VSS — Ground |
| Pin 51 | RD0 — General purpose I/O |
| Pin 52 | RD1 — General purpose I/O |
| Pin 53 | RD2 — General purpose I/O |
| Pin 54 | RD3 — General purpose I/O |
| Pin 55 | RD4 — General purpose I/O |
| Pin 56 | RD5 — General purpose I/O |
| Pin 57 | RD6 — General purpose I/O |
| Pin 58 | RD7 — General purpose I/O |
| Pin 59 | RD8 — General purpose I/O |
| Pin 60 | RD9 — General purpose I/O |
| Pin 61 | RD10 — General purpose I/O |
| Pin 62 | RD11 — General purpose I/O |
| Pin 63 | VSS — Ground |
| Pin 64 | VDD — Supply voltage 2.3V-3.6V |
| Pin 65 | RD12 — General purpose I/O |
| Pin 66 | RD13 — General purpose I/O |
| Pin 67 | RD14 — General purpose I/O |
| Pin 68 | RD15 — General purpose I/O |
| Pin 69 | VSS — Ground |
| Pin 70 | RE0 — General purpose I/O / PMD0 |
| Pin 71 | RE1 — General purpose I/O / PMD1 |
| Pin 72 | RE2 — General purpose I/O / PMD2 |
| Pin 73 | RE3 — General purpose I/O / PMD3 |
| Pin 74 | RE4 — General purpose I/O / PMD4 |
| Pin 75 | RE5 — General purpose I/O / PMD5 |
| Pin 76 | RE6 — General purpose I/O / PMD6 |
| Pin 77 | RE7 — General purpose I/O / PMD7 |
| Pin 78 | VSS — Ground |
| Pin 79 | RF0 — General purpose I/O / PMD8 |
| Pin 80 | RF1 — General purpose I/O / PMD9 |
| Pin 81 | RF2 — General purpose I/O / PMD10 |
| Pin 82 | RF3 — General purpose I/O / PMD11 |
| Pin 83 | RF4 — General purpose I/O / PMD12 |
| Pin 84 | RF5 — General purpose I/O / PMD13 |
| Pin 85 | RF6 — General purpose I/O / PMD14 / USB ID |
| Pin 86 | RF7 — General purpose I/O / PMD15 |
| Pin 87 | VSS — Ground |
| Pin 88 | VDD — Supply voltage 2.3V-3.6V |
| Pin 89 | RG0 — General purpose I/O |
| Pin 90 | RG1 — General purpose I/O |
| Pin 91 | RG2 — General purpose I/O |
| Pin 92 | RG3 — General purpose I/O |
| Pin 93 | RG6 — General purpose I/O / SCLK2 |
| Pin 94 | RG7 — General purpose I/O / SDA2 |
| Pin 95 | RG8 — General purpose I/O / SCLK1 |
| Pin 96 | RG9 — General purpose I/O / SDA1 |
| Pin 97 | VDD — Supply voltage 2.3V-3.6V |
| Pin 98 | VSS — Ground |
| Pin 99 | D+ — USB D+ differential data line |
| Pin 100 | D- — USB D- differential data line |
Typical Applications
PIC32MX460F256LT-80V/PT is suitable for 6 applications: USB HID / CDC / MSD Peripherals, Embedded QVGA Graphical HMI, Industrial Sensor Data Acquisition, IoT Gateway / TCP-IP Edge Node, Audio Class USB Peripherals, Motor Control / PWM Driver Hub.
USB HID / CDC / MSD Peripherals
The PIC32MX460F256LT-80V/PT integrates a USB-OTG full-speed transceiver supporting 12 Mbps, which matches USB 1.1 low/full-speed HID, CDC (virtual COM), and MSD (mass storage) class profiles without external components. Its 80 MHz MIPS M4K core executes the Microchip USB framework with sub-millisecond interrupt latency, allowing responsive HID devices at 1000 Hz polling rates. The 256 KB Flash fits full USB stacks including MSD FAT16/32 handlers, while 32 KB RAM holds endpoint buffers plus application state. PPS (Peripheral Pin Select) maps the USB D+/D- to dedicated pins and frees the rest of the 85 I/O for buttons, LEDs, or sensors.
Recommended
Embedded QVGA Graphical HMI
Driving a 320x240 QVGA TFT through the PIC32MX460F256LT-80V/PT's PMP (Parallel Master Port) and 85-pin TQFP pin count gives designers 33+ data lines plus control signals for 16-bit parallel LCD interfaces. The 80 MHz core pumps pixels at typical 5 MHz PMP throughput, sufficient for static menus and slow animations without external graphics RAM. 256 KB Flash stores frame buffers and UI assets, and the 10-bit ADC handles touch-screen resistive sensing. The 100-pin TQFP pinout allows easy fan-out to display, backlight driver, and capacitive touch controller I2C bus.
Recommended
Industrial Sensor Data Acquisition
The 16-channel 10-bit ADC at 1 Msps on the PIC32MX460F256LT-80V/PT suits industrial sensor multiplexing for thermocouples, RTDs, and 4-20 mA loops through external signal conditioning. At 80 MHz DSP performance, on-chip FFTs filter out 50/60 Hz line noise with sufficient MIPS headroom. The extended -40C to +105C temperature range (V-grade silicon) supports factory-floor deployment, and the 100-pin TQFP gives access to 85 I/O for relay drivers, isolators, and RS-485 transceivers. The 32 KB RAM buffers sensor bursts before TCP/IP upload via Ethernet expansion daughter board.
Recommended
IoT Gateway / TCP-IP Edge Node
The PIC32MX460F256LT-80V/PT running Microchip's TCP/IP stack (TCP, UDP, HTTP, SNTP, MQTT) achieves wired Ethernet connectivity via SPI-attached ENC28J60 or external PHY. The 32 KB SRAM holds TCP socket buffers plus TLS fragments, and 256 KB Flash stores Wi-Fi configuration and OTA bootloader. The 80 MHz core runs the IwIP stack at 50+ Mbps on SPI-attached Wi-Fi (MRF24WG0MA) while leaving MIPS for sensor preprocessing. 85 I/O provides expansion for UART-attached cellular modems, GPS modules, or LoRa transceivers, ideal for remote monitoring stations.
Recommended
Audio Class USB Peripherals
The PIC32MX460F256LT-80V/PT's USB-OTG full-speed supports USB Audio Class 1.0 at 12 Mbps, sufficient for 48 kHz / 16-bit stereo audio streaming. Its 80 MHz MIPS M4K executes the audio class driver plus DSP filtering with DMA-driven endpoint transfers that minimize CPU load. The 256 KB Flash stores audio class descriptors, sample-rate converters, and equalizer coefficients. 32 KB SRAM buffers USB audio packets with low latency. The 100-pin TQFP provides PWM outputs for LED VU meters and I2S lines to external CODECs like the AK4552 or SSM2603.
Recommended
Motor Control / PWM Driver Hub
Five 16-bit timers with 5 output-compare channels on the PIC32MX460F256LT-80V/PT generate complementary PWM pairs with hardware dead-band insertion for 3-phase brushless DC (BLDC) motor control. The 80 MHz core runs vector FOC (Field-Oriented Control) loops at typical 20 kHz with sub-microsecond ADC sampling for current sensing. The 100-pin TQFP gives 6 PWM pairs plus 4 dedicated fault inputs for overcurrent and hall-sensor feedback. 256 KB Flash stores full FOC plus encoder routines, and 32 KB RAM holds phase-angle and PID state variables.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX460F256LT-80V/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX460F256L-80V/PT | PIC32MX460F256LT-80I/PT | PIC32MX450F256L-V/PF | PIC32MX360F256L-80V/PT | PIC32MX460F512LT-80V/PT |
|---|---|---|---|---|---|---|
| Package | 100-pin TQFP (PT), 12x12 mm | 100-pin TQFP (PT) - same | 100-pin TQFP (PT) - same | 100-pin TQFP (PT) - same | 100-pin TQFP (PT) - same | 100-pin TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 256 KB | 256 KB (same) | 256 KB (same) | 256 KB (same) | 256 KB (same) | 512 KB (+100%) |
| RAM | 32 KB | 32 KB (same) | 32 KB (same) | 32 KB (same) | 32 KB (same) | 64 KB (+100%) |
| Max Clock Speed | 80 MHz | 80 MHz (same) | 80 MHz (same) | 80 MHz (same) | 80 MHz (same) | 80 MHz (same) |
| USB | USB-OTG Full-Speed | USB-OTG Full-Speed (same) | USB-OTG Full-Speed (same) | USB-OTG Full-Speed (same) | No USB | USB-OTG Full-Speed (same) |
| Temperature Grade | V (2.0V-3.6V extended) | V (same) | I (industrial) | V (same) | V (same) | V (same) |
| I/O Pins | 85 | 85 (same) | 85 (same) | 85 (same) | 85 (same) | 85 (same) |
| Operating Voltage | 2.3 V to 3.6 V | 2.3-3.6 V (same) | 2.3-3.6 V (same) | 2.3-3.6 V (same) | 2.3-3.6 V (same) | 2.3-3.6 V (same) |
Key Differentiators
- USB-OTG Full-Speed integrated on-chip (vs PIC32MX360F256L-80V/PT)
- Tape-and-reel factory packaging (vs PIC32MX460F256L-80V/PT)
- Extended V operating voltage (2.0-3.6 V) (vs PIC32MX460F256LT-80I/PT)
Design Notes
Decouple each VDD/VSS pair on the 100-pin TQFP with a 100 nF ceramic cap placed within 3 mm of the pin pair. Per Microchip PIC32MX3XX/4XX family datasheet (61143H), bulk decoupling of 10 uF + 100 nF is required at the main VDD rail. The ADC reference (AVDD) requires a dedicated LDO or ferrite-bead filter to avoid coupling switching noise into the 10-bit ADC. Estimated: at 80 MHz with full USB-OTG active, peak IDD reaches approximately 60-75 mA - verify regulator headroom.
The 100-pin TQFP (PT) 12x12 mm has theta_JA of approximately 39 C/W on a standard 4-layer JEDEC test board. Estimated: at 80 MHz full peripheral activity the part dissipates ~200 mW, giving a junction-to-ambient rise of ~8 C. No heatsink is needed, but adequate copper pour (at least 1 oz copper) on power pins improves dissipation. Industrial temperature variants (-40 C to +105 C) are available with the I suffix.
Route the USB D+ and D- differential pair on the PIC32MX460F256LT-80V/PT with 90-ohm differential impedance, length-matched within 150 mil. The crystal traces (if external) must be short and guarded by ground. Keep analog inputs (AN0-AN15) away from switching regulator or PWM switching edges. The 100-TQFP PT package uses 0.5 mm pitch - ensure the PCB has proper fine-pitch assembly capability.
Do not confuse the PIC32MX460F256LT-80V/PT (100-TQFP) with the PIC32MX460F256LT-80V/BG (121-BGA) - they share the same die but cannot be interchanged without PCB redesign. The 'T' suffix indicates tape-and-reel; the non-T tray variant is identical silicon. The 'V' suffix indicates 2.0-3.6 V operation; do not substitute with 'I' supersession (industrial temp) or 'F' (standard temp) without reviewing your thermal envelope.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - this is a general-purpose MCU. For automotive designs use PIC32MK or dsPIC33 AEC-Q100 qualified variants.
