PIC32MX170F512HT-50I/PT - 50MHz 32-bit MCU 512KB Flash TQFP-64
MPN: PIC32MX170F512HT-50I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.75 | $6.75 |
| 10 | $6.08 | $60.80 |
| 100 | $5.4 | $540.00 |
| 500 | $4.85 | $2,425.00 |
| 1,000 | $4.32 | $4,320.00 |
PIC32MX170F512HT-50I/PT Overview
A 32-bit microcontroller (MCU) is a single-chip computer integrating a high-performance processor core (here MIPS M4K), Flash program storage, SRAM data memory, and rich peripherals (UART, I2C, SPI, ADC, timers, USB, CAN). Microcontrollers sit within the embedded systems / semiconductor hierarchy: MCU -> embedded processor -> IC -> semiconductor device. The PIC32MX1xx family specifically targets applications needing USB 2.0 Full-Speed OTG, audio (I2S), and graphics PMP interfaces while retaining low power and deterministic interrupt response.
Key features include two I2S modules for audio codec interfacing, a 10-bit 1 Msps ADC with up to 28 channels, four SPI modules for high-throughput peripherals, five 16-bit timers, a real-time clock calendar, and an integrated USB 2.0 Full-Speed OTG controller with dedicated DMA. The PIC32MX170F512HT-50I/PT also supports JTAG and 2-wire ICSP debugging, and operates from 2.3V to 3.6V.
The M4K core implements a 5-stage pipeline with single-cycle multiply and hardware divide, and the MMU-less architecture simplifies deterministic embedded firmware. The 512 KB Flash supports eXtreme Switch (XLP) low-power modes and In-Circuit Serial Programming (ICSP) for field upgrades.
Typical applications include USB peripherals (Human Interface Devices, CDC serial, audio), industrial control with PMP-driven character or graphic LCDs, multi-sensor data acquisition hubs, and consumer audio docks. The high DMIPS/MHz ratio and rich connectivity make the part suited for protocols requiring real-time response such as Modbus, CAN-based industrial nodes (with external PHY), and USB stacks.
Design considerations: the PT package exposes all 64 pins including full JTAG, PGECx/PGEDx pairs (multiple), and five VDD/VSS pairs. Decouple each VDD pin with a 100 nF ceramic placed within 5 mm. The USB D+/D- lines require 90 ohm differential impedance with ESD protection (e.g., USBLC6-2). PPS reassignment must respect peripheral-to-pin mapping tables in the datasheet.
This page synthesizes distributor pricing, drop-in alternatives drawn from the PIC32MX1xx family, and 3 practical design notes that complement but are not redundant with the manufacturer datasheet.
Drop-in alternatives for PIC32MX170F512HT-50I/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 PIC32MX170F512HT-50I/PT (same form factor and footprint) — differing in ADC, Package, Timers, USB, UART Modules.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX170F512H-50I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX270F512D-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX170F512DT-50I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX170F256DT-50I/PT
✅ Drop-In✓ In Stock
$3.85 / Unit
View Datasheet →PIC32MX270F512DT-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX270F512DT-50I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX170F512HT-50I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Frequency | 50 MHz |
| DMIPS Performance | 83 DMIPS |
| Program Memory (Flash) | 512 KB (512K x 8) |
| Data Memory (SRAM) | 64 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| Package | 64-pin TQFP (PT) 10x10 mm |
| Mounting Type | Surface Mount |
| ADC | 10-bit, up to 28 channels, 1 msps |
| USB | USB 2.0 Full-Speed OTG |
| I2S Modules | 2 |
| SPI Modules | 4 |
| I2C Modules | 3 |
| UART Modules | 5 |
| Timers | 5 x 16-bit + 2 x 32-bit |
| PMP (Parallel Master Port) | Yes, dual read/write buffers |
| PPS (Peripheral Pin Select) | Yes |
| DMA Channels | 8 |
| Debug Interface | JTAG + 2-wire ICSP |
| RoHS Status | Compliant |
| MSL Level | 3 (168 hours) |
| Packaging Form | Tape & Reel ("T" suffix) |
PIC32MX170F512HT-50I/PT Pin Configuration
| Pin 1 | RA0 — I/O / analog / PGEDX |
| Pin 2 | RA1 — I/O / analog / PGECX |
| Pin 3 | RA2 — I/O / analog |
| Pin 4 | RA3 — I/O / analog |
| Pin 5 | RA4 — I/O / analog |
| Pin 6 | RA5 — I/O / analog |
| Pin 7 | RA6 — I/O / analog |
| Pin 8 | RA7 — I/O / analog |
| Pin 9 | RB0 — I/O / analog / PGEDX |
| Pin 10 | RB1 — I/O / analog / PGECX |
| Pin 11 | RB2 — I/O / analog |
| Pin 12 | RB3 — I/O / analog |
| Pin 13 | RB4 — I/O / analog |
| Pin 14 | RB5 — I/O / analog |
| Pin 15 | RB6 — I/O / analog / PGECX |
| Pin 16 | RB7 — I/O / analog / PGEDX |
| Pin 17 | VDD — Power supply (2.3 V to 3.6 V) |
| Pin 18 | RC1 — I/O |
| Pin 19 | RC2 — I/O |
| Pin 20 | RC3 — I/O |
| Pin 21 | RC4 — I/O |
| Pin 22 | RC5 — I/O |
| Pin 23 | RC6 — I/O |
| Pin 24 | RC7 — I/O |
| Pin 25 | RC8 — I/O |
| Pin 26 | RC10 — I/O |
| Pin 27 | VDD — Power supply |
| Pin 28 | RC12 — I/O |
| Pin 29 | RC13 — I/O |
| Pin 30 | RC14 — I/O |
| Pin 31 | RC15 — I/O |
| Pin 32 | VSS — Ground |
| Pin 33 | RD0 — I/O |
| Pin 34 | RD1 — I/O |
| Pin 35 | RD2 — I/O |
| Pin 36 | RD3 — I/O |
| Pin 37 | RD4 — I/O |
| Pin 38 | RD5 — I/O |
| Pin 39 | RD6 — I/O |
| Pin 40 | RD7 — I/O |
| Pin 41 | RD8 — I/O |
| Pin 42 | RD9 — I/O |
| Pin 43 | RD10 — I/O |
| Pin 44 | RD11 — I/O |
| Pin 45 | RD12 — I/O |
| Pin 46 | RD13 — I/O |
| Pin 47 | RD14 — I/O |
| Pin 48 | RD15 — I/O |
| Pin 49 | VSS — Ground |
| Pin 50 | RE0 — I/O |
| Pin 51 | RE1 — I/O |
| Pin 52 | RE2 — I/O |
| Pin 53 | RE3 — I/O |
| Pin 54 | RE4 — I/O |
| Pin 55 | RE5 — I/O |
| Pin 56 | RE6 — I/O |
| Pin 57 | RE7 — I/O |
| Pin 58 | RF0 — I/O |
| Pin 59 | RF1 — I/O |
| Pin 60 | RF2 — I/O / USB D- |
| Pin 61 | RF3 — I/O / USB D+ |
| Pin 62 | VSS — Ground (USB ground reference) |
| Pin 63 | VDD — Power supply (USB transceiver supply) |
| Pin 64 | RG2 — I/O / oscillator |
Typical Applications
PIC32MX170F512HT-50I/PT is suitable for 7 applications: USB HID Peripherals, Industrial Control with PMP Graphics LCD, USB Audio Device (I2S Codec), Multi-Sensor Data Acquisition Hub, USB-to-UART Bridge / Debug Gateway, Consumer Audio Dock with USB Host, Industrial Modbus RTU Gateway.
USB HID Peripherals
The PIC32MX170F512HT-50I/PT's integrated USB 2.0 Full-Speed OTG controller makes it an ideal host for USB HID peripherals such as keyboards, mice, barcode scanners, and custom input devices. At 50 MHz / 83 DMIPS the M4K core executes HID report parsing and HID-class enumeration without bottlenecks, and the 64 KB SRAM provides ample room for descriptor buffers and report FIFOs. The 512 KB Flash fits Microchip's MPLAB Harmony USB stack plus extensive application code. PPS reassignment allows USB D+/D- to coexist with debugging pins on the same TQFP-64 footprint, simplifying PCB layout. For an HID barcode scanner, this part processes scan-line data and HID reports in a single MCU.
Industrial Control with PMP Graphics LCD
The PIC32MX170F512HT-50I/PT's Parallel Master Port (PMP) with dual read/write buffers interfaces directly to character and graphics LCDs in HMI panels, while the M4K core's 50 MHz throughput drives touch-screen response and protocol handling. The 64 KB SRAM holds graphics frame buffers or character widget sets, and 5UARTs handle RS485 sensor buses with hardware Modbus RTU. Industrial temperature rating (-40 C to +85 C) supports factory-floor enclosures without derating. Compared with Cortex-M0 alternatives, the 50 MHz M4K delivers 83 DMIPS, well above typical 32 MHz ARM Cortex-M0 parts, giving headroom for HMI animation and USB diagnostics simultaneously.
USB Audio Device (I2S Codec)
Two I2S modules plus USB Full-Speed make the PIC32MX170F512HT-50I/PT a strong choice for USB audio peripherals such as USB headsets, USB microphones, and USB-to-I2S bridges. The M4K core runs at 50 MHz, sufficient to handle 48 kHz / 16-bit stereo I2S streams plus USB isochronous endpoint servicing. The 512 KB Flash fits USB audio class 1.0 drivers plus custom DSP effects; 64 KB SRAM accommodates audio buffers (e.g., 50 ms @ 48 kHz stereo ~ 9.6 KB). PPS allows flexible pin assignment so I2S data/clock and USB D+/D- are routed cleanly on the TQFP-64 PCB. Compared with PIC32MX170F256 variants, the 512 KB Flash headroom avoids code-size pressure.
Multi-Sensor Data Acquisition Hub
With up to 28 ADC channels at 1 msps, four SPI buses for digital sensors, three I2C buses for environmental sensors, and five UARTs for serial devices, the PIC32MX170F512HT-50I/PT serves as a multi-sensor acquisition hub in industrial or environmental monitoring. The 10-bit ADC supports voltage, current, and temperature sensing at moderate accuracy; for higher precision, external 16-bit ADC ADCs are easily added via the PMC SPI buses. DMA channels (8) enable background sensor streaming without CPU intervention. Compared with simpler 8-bit MCUs, the 32-bit M4K core at 83 DMIPS processes sensor fusion algorithms (e.g., Kalman filtering) in real time.
USB-to-UART Bridge / Debug Gateway
The PIC32MX170F512HT-50I/PT serves as a USB CDC device presenting a virtual COM port on the host side while bridging to one or more physical serial interfaces (UART/RS232/RS485). With 5 UARTs, this single MCU can fan-out USB traffic to multiple downstream MCUs, useful as a service-tool gateway. PPS reassignment makes the TQFP-64 routing clean. Compared with dedicated USB-UART bridges like FT232R, this approach adds a programmable application layer (bootloader, diagnostics) at similar cost. The 50 MHz / 83 DMIPS core easily handles USB bulk transfers at Full-Speed 12 Mbps and 5 serial streams simultaneously.
Consumer Audio Dock with USB Host
USB Host mode plus two I2S modules make the PIC32MX170F512HT-50I/PT ideal for consumer audio docks: read audio files from a USB flash drive, decode to PCM, and output to an external DAC over I2S. The 50 MHz M4K core can run lightweight software MP3 / WMA decoders; the 512 KB Flash accommodates the decoder plus USB mass-storage class stack. PMP is available on controllers to drive the LCD on the dock. Industrial temperature rating gives margin for the warmer operating environment of enclosed audio equipment. The TQFP-64 footprint provides enough pins for 2x I2S, USB, LCD, and user buttons.
Industrial Modbus RTU Gateway
With five UARTs and Modbus RTU support, the PIC32MX170F512HT-50I/PT functions as a multi-drop industrial gateway bridging RS485 sensor networks to USB or Ethernet uplinks. The M4K core executes Modbus TCP / RTU conversion at 50 MHz without CPU bottleneck. PMC buffers bus configuration but does not buffer stack. Industrial -40 C to +85 C operation supports factory cabinets without derating. The 512 KB Flash fits full Modbus stack plus user application; the 64 KB SRAM holds RTU frame buffers for all five UARTs simultaneously. Compared with PIC32MX130F128 variants, this part doubles Flash headroom.
Engineering reference data for PIC32MX170F512HT-50I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | Alt 1 | Alt 2 | Alt 3 | Alt 4 |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same |
| Core Architecture | MIPS M4K 32-bit | MIPS M4K 32-bit | MIPS M4K 32-bit | MIPS M4K 32-bit | MIPS M4K 32-bit |
| Maximum CPU Frequency | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 512 KB | 256 KB (-50%) |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| USB OTG | Yes (USB 2.0 Full-Speed) | Yes (USB 2.0 Full-Speed) | Yes (USB 2.0 Full-Speed) | Yes (USB 2.0 Full-Speed) | Yes (USB 2.0 Full-Speed) |
| Operating Temperature | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) |
| Crypto Engine | No | No | Yes | No | No |
| Packaging Form | Tape & Reel | Tray | Tray | Tape & Reel | Tape & Reel |
Key Differentiators
- Tape-and-reel form for high-volume SMT (vs PIC32MX170F512H-50I/PT)
- Lower Flash headroom for cost-sensitive builds (vs PIC32MX170F256DT-50I/PT)
- No crypto block vs PIC32MX270 family (vs PIC32MX270F512D-I/PT)
Design Notes
Decouple each of the 5 VDD/VSS pairs on the PIC32MX170F512HT-50I/PT with a 100 nF ceramic capacitor placed within 5 mm of the corresponding pins. The USB supply (pin 63) requires a 100 nF plus 4.7 uF bulk to support inrush during plug events. The MCU's 50 MHz / 83 DMIPS operation at 3.3 V draws approximately 30 mA active plus peripherals; budgeting 100 mA total with a switching 50 MHz regulator is safe. Brown-out reset (BOR) and POR should be enabled in configuration bits for industrial reliability.
Route USB D+ (RF3) and D- (RF2) as a 90 ohm differential pair with matched length to within 150 mil. Keep the pair away from switching regulator inductor or clock traces. Add ESD protection (e.g., USBLC6-2SC6) within 5 mm of the USB connector. For PMP-driven LCDs, group all of PMP to a single trace region and add series damping resistors if the LCD cable exceeds 50 mm.
Always configure unused I/O as R A or R with the corresponding pull-ups disabled to minimize leakage. The PIC32MX170F512HT-50I/PT's PPS feature can map many peripherals to multiple pins - verify PPS mapping in the datasheet before locking the pinout. Do not exceed 3.6 V on any pin; the device is NOT 5 V tolerant on most R A / R B / R C / R D / R E / R F / R H pins. For ICSP programming, ensure PGECX/PGEDX pairs are accessible; the device has multiple pairs (R B 6/7, R A 6/7, etc.) and any pair may be used but both pins of the pair must be dedicated.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - PIC32MX1xx family targets industrial / consumer, not automotive. Lead-free and Pb-free packaging.
