PIC32MX170F512LT-I/PT - 512KB Flash 32-bit MCU TQFP-100 | Microchip
MPN: PIC32MX170F512LT-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.95 | $9.95 |
| 10 | $9.1 | $91.00 |
| 100 | $7.85 | $785.00 |
| 500 | $6.95 | $3,475.00 |
| 1,000 | $6.4 | $6,400.00 |
PIC32MX170F512LT-I/PT Overview
A 32-bit microcontroller (MCU) is a programmable system-on-chip that integrates a 32-bit CPU core, Flash program memory, SRAM data memory, peripherals (timers, ADC, communication, GPIO), and on-chip debug. The PIC32MX1xx family occupies the entry-level 32-bit tier above 8-bit PIC16/PIC18 MCUs and below Cortex-M0/M4 parts, targeting cost-sensitive 32-bit designs needing USB, CAN, or graphics interfaces through PMP.
Key features include 512 KB Flash with pre-fetch cache, 64 KB SRAM, USB 2.0 full-speed On-The-Go, CAN 2.0B, two I2S modules for digital audio, four SPI/I2S, five UART, five 16-bit timers, a 10-bit 1 Msps ADC with 28 input channels, CTMU for capacitive touch, and a Parallel Master Port (PMP) with dual buffers for graphics. PPS allows flexible remapping of digital peripherals to any GPIO.
Architecturally, the PIC32MX1xx uses the MIPS32 M4K core with 5-stage pipeline, hardware multiply/divide, single-cycle Flash prefetch, and 1.56 DMIPS/MHz performance. This enables 83 DMIPS at 40 MHz, with deterministic interrupt latency for real-time tasks. The chip operates from 2.3 V to 3.6 V and supports low-power sleep/idle modes for battery designs.
Typical applications include industrial control panels with touch keys, USB-to-UART bridges, CAN node gateways, digital audio (I2S) streaming devices, low-cost graphics HMI using PMP, sensor hubs, home appliance controllers, and consumer IoT hubs requiring USB host/device. Debug is via MPLAB ICD/Snap/Pickit over ICSP.
A key design consideration: the part ships with a '40 MHz' rating (vs the -50I variant at 50 MHz). Both share the same silicon; the -50I grade is speed-screened. Validate your design's CPU, ADC, and timing budgets at 40 MHz before assuming 50 MHz behaviour.
This page synthesises distributor pricing, drop-in alternatives, and practical design notes beyond what the manufacturer datasheet alone offers.
Drop-in alternatives for PIC32MX170F512LT-I/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 PIC32MX170F512LT-I/PT (same form factor and footprint) — differing in ADC, Package, Timers, Parallel Master Port (PMP), USB.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX170F512L-I/PT
✅ Drop-In✓ In Stock
$4.2 / Unit
View Datasheet →PIC32MX170F512L-I/PF
✅ Drop-In✓ In Stock
$6.45 / Unit
View Datasheet →PIC32MX170F512LT-50I/PT
✅ Drop-In✓ In Stock
$3.85 / Unit
View Datasheet →PIC32MX170F512HT-50I/PT
✅ Drop-In✓ In Stock
$4.32 / Unit
View Datasheet →PIC32MX170F512L-50I/PF
✅ Drop-In✓ In Stock
$5.55 / Unit
View Datasheet →PIC32MX170F512LT-I/PT Maximum Ratings & Electrical Characteristics
| Core | MIPS32 M4K (32-bit RISC) |
| Maximum CPU Frequency | 40 MHz |
| Performance | 1.56 DMIPS/MHz (up to 83 DMIPS) |
| Program Flash | 512 KB |
| SRAM | 64 KB |
| Operating Voltage | 2.3 V to 3.6 V |
| GPIO | 85 (with PPS remap) |
| ADC | 10-bit, up to 28 channels, 1 Msps |
| Timers | 5 x 16-bit |
| UART | 5 |
| SPI | 4 (some share with I2S) |
| I2S | 2 |
| I2C | 4 |
| USB | USB 2.0 Full-Speed OTG |
| CAN | 1 x CAN 2.0B |
| Parallel Master Port (PMP) | Yes (dual buffers, graphics) |
| CTMU | Yes (capacitive touch, time measurement) |
| Package | 100-pin TQFP (12x12 mm) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Mounting Type | Surface Mount |
| MSL Level | 3 |
| RoHS | Compliant |
| Debug Interface | ICSP / JTAG (MPLAB Snap/ICD/Pickit) |
PIC32MX170F512LT-I/PT 100-pin tqfp (12x12 mm) Pin Configuration Guide
Pin configuration for PIC32MX170F512LT-I/PT (100-pin tqfp (12x12 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC32MX170F512LT-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MX170F512LT-I/PT is suitable for 6 applications: Industrial Control Panel with Touch Keys, USB-to-UART Bridge and CAN Gateway, Digital Audio Streaming with I2S, Low-Cost Graphics HMI with PMP, IoT Sensor Hub with USB Device, Home Appliance Motor Control Board.
Industrial Control Panel with Touch Keys
The PIC32MX170F512LT-I/PT's 512 KB Flash, 64 KB SRAM, and on-chip CTMU (Charge Time Measurement Unit) make it well-suited to industrial HMI panels with capacitive touch keys. At 40 MHz with 1.56 DMIPS/MHz, the M4K core runs state-machine control loops with deterministic interrupt latency while simultaneously scanning up to 28 ADC channels for sensor feedback. The CTMU eliminates dedicated touch controllers, reducing BOM and PCB area; the 100-pin TQFP provides 85 GPIO via PPS for driving LEDs, displays, and key matrices. Industrial -40C to +85C operation covers factory-floor environments.
Recommended
USB-to-UART Bridge and CAN Gateway
The on-chip USB 2.0 Full-Speed OTG controller combined with five UART channels and one CAN 2.0B module makes the PIC32MX170F512LT-I/PT ideal for industrial bridge and gateway products. USB device/host operation with internal PHY eliminates external transceiver complexity, while CAN runs up to 1 Mb/s for automotive/industrial network bridging. The 64 KB SRAM buffers USB CDC transfers and CAN frame queues; 512 KB Flash accommodates USB stacks, bootloader, and application logic. PPS remaps UART, CAN, and I2C to optimise PCB routing.
Recommended
Digital Audio Streaming with I2S
Two independent I2S modules, four SPI/I2S multiplexed channels, and 512 KB Flash position the PIC32MX170F512LT-I/PT for low-cost digital audio products. The M4K core decodes MP3/AAC streams at 40 MHz while feeding PCM data to external DACs over I2S; alternatively, the PIC32 can act as I2S master sourcing clocks to the DAC. 64 KB SRAM accommodates audio buffer rings without external memory. The 100-pin TQFP footprint gives headroom for additional features such as a TFT display for a bedside audio device.
Recommended
Low-Cost Graphics HMI with PMP
The Parallel Master Port (PMP) with dual buffers and graphics addressing modes enables direct interface to parallel TFT displays from the PIC32MX170F512LT-I/PT. At 40 MHz the M4K core refreshes displays up to QVGA (320x240) while running UI logic. 512 KB Flash stores bitmap assets and fonts without external memory. PPS assigns PMP data/control lines to any GPIO, easing PCB layout. For monochrome GLCDs this is a particularly cost-effective solution compared with Cortex-M3 + external display controller combinations.
Recommended
IoT Sensor Hub with USB Device
USB device mode, ample SRAM (64 KB), and the flexible PPS pin map suit the PIC32MX170F512LT-I/PT to USB-attached IoT sensor hubs. The 10-bit 1 Msps ADC with 28 channels handles multi-sensor input; CTMU supports capacitive proximity or humidity sensing. The MIPS32 core runs USB CDC/HID stacks and publishes sensor data over USB or, with a paired Wi-Fi module, over the network. Industrial temperature range and 100-pin TQFP support dense PCB layouts with multi-rail power designs.
Recommended
Home Appliance Motor Control Board
Five 16-bit timers, 85 GPIO via PPS, and CAN connectivity make the PIC32MX170F512LT-I/PT suitable for white-goods motor control boards that drive small BLDC or stepper subsystems. At 40 MHz the MCU can perform PWM generation, ADC-based current sensing, and CAN or UART-based feedback to a main appliance controller. The industrial -40C to +85C temperature range handles refrigerator or dishwasher compartments; 512 KB Flash supports motor-control firmware plus RF/BLE stack for smart-appliance variants.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX170F512LT-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX170F512L-I/PT | PIC32MX170F512L-I/PF | PIC32MX170F512LT-50I/PT | PIC32MX170F512HT-50I/PT | PIC32MX170F512L-50I/PF |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-100 (12x12 mm) | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same |
| Maximum CPU Frequency | 40 MHz | 40 MHz | 40 MHz | 50 MHz | 50 MHz | 50 MHz |
| Flash | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Operating Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| 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 OTG |
| Unit Price (qty 1, USD) | $9.95 | similar (same die) | similar (same die) | slightly higher (50 MHz) | slightly higher (50 MHz) | slightly higher (50 MHz) |
Key Differentiators
- Same TQFP-100 footprint as 50 MHz grade - allows in-line upgrade path (vs PIC32MX170F512LT-50I/PT)
- On-chip USB Full-Speed OTG with internal PHY (vs PIC32MX170F256D-I/PT (lower-memory sibling without USB on some variants))
- Peripheral Pin Select (PPS) on 85 GPIO (vs Fixed-pin PIC32MX3xx/4xx MCUs)
Design Notes
Estimated: at 40 MHz CPU, the PIC32MX170F512LT-I/PT draws roughly 50-65 mA active current from VDD at 3.3 V depending on peripheral usage (per datasheet typical characteristics). Add a 10 uF bulk + 0.1 uF decoupling capacitor at each VDD/AVDD pin pair, placed within 5 mm of the package. USB bus-powered designs must observe the 100 mA unconfigured / 500 mA configured power budget per USB 2.0 spec - the MCU itself plus peripherals can exceed 500 mA when ADC + I2S + USB are active simultaneously.
The 100-pin TQFP at 12x12 mm uses 0.5 mm pitch leads. Maintain at least 8 mil trace width and 8 mil trace spacing in the breakout area; fan-out under the IC pads is impossible, so use the inner 4-layer plane to route signals out. Place a continuous ground plane under the device to keep digital return currents short. Place the 12 MHz primary crystal within 5 mm of the OSCI/OSCO pins with a ground guard ring; keep it away from switching signal edges.
Do not confuse the 40 MHz 'I' grade (PIC32MX170F512LT-I/PT) with the 50 MHz '-50I' grade (PIC32MX170F512LT-50I/PT). Both share silicon but are speed-tested differently. Programming should use the correct configuration bits (DEVCFG1) for the actual speed grade. Forgetting to assert the MCLR pull-up during reset will leave the device in reset - some debuggers struggle to connect. Always tie the ICSP programming clock (PGECx) and data (PGEDx) lines to dedicated pins not shared with critical peripherals.
Compliance Information
RoHS and lead-free per Microchip product page; halogen-free status not stated in retrieved data. AEC-Q100 not applicable (consumer/industrial-grade MCU); automotive variants exist in other PIC32 families.
