PIC32MX170F512HT-I/PT - 32-bit 40MHz 512KB Flash MCU | Microchip
MPN: PIC32MX170F512HT-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.92 | $4.92 |
| 10 | $4.39 | $43.90 |
| 100 | $3.78 | $378.00 |
| 500 | $3.32 | $1,660.00 |
| 1,000 | $2.95 | $2,950.00 |
| 3,000 | $2.54 | $7,620.00 |
PIC32MX170F512HT-I/PT Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, and a rich set of on-chip peripherals such as timers, communication interfaces, and analog blocks. Mixers sit at the bottom of the embedded system hierarchy (microcontroller -> embedded controller -> system-on-chip -> semiconductor). The PIC32MX1XX/2XX/5XX family from Microchip bridges 8-bit PIC and 32-bit ARM worlds with MIPS-based performance.
Key features of the PIC32MX170F512HT-I/PT include two I2S audio interfaces, four SPI modules for codec and serial communications, Peripheral Pin Select (PPS) for flexible signal routing, Parallel Master Port (PMP) with dual buffers for graphics interfaces, USB 2.0 full-speed On-The-Go (OTG), 10-bit ADC with up to 1 Msps, and an integrated Charge Time Measurement Unit (CTMU) for touch and capacitance sensing. The core delivers 1.56 DMIPS/MHz and is supported by a 5-stage pipeline.
The PIC32MX170F512HT-I/PT is built on a low-power CMOS process with multiple power modes (Run, Idle, Sleep) and a dedicated RTCC for low-power timekeeping. It supports MIPS16e code compression to maximize Flash density, prefetch cache to accelerate execution, and JTAG/ICSP debug. The TQFP-64 package exposes 53 general-purpose I/O pins, ample for peripheral expansion, and the wide 2.3V to 3.6V supply range suits both battery and USB-powered designs.
Typical applications include consumer audio docks, USB peripherals, graphic HMI terminals, industrial control panels, IoT sensor hubs, and medical patient monitors. The combination of I2S + USB + graphics PMP makes it particularly suited to media-rich embedded designs.
Designers should map the four PPS-selectable I2S clocks and configure the RTCC clock source carefully to avoid jitter, and reserve the CTMU for cap-touch if used for buttons.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including a parametric comparison vs. closest Microchip PIC32MX variants.
Drop-in alternatives for PIC32MX170F512HT-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 PIC32MX170F512HT-I/PT (same form factor and footprint) — differing in ADC, Core Architecture, Package, Program Memory (Flash), USB.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX170F512H-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX170F512HT-50I/PT
✅ Drop-In✓ In Stock
$4.32 / Unit
View Datasheet →PIC32MX270F256B-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX150F256H-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX170F512HT-V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX170F512HT-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Core Size | 32-bit |
| Maximum CPU Speed | 50 MHz |
| Performance | 83 DMIPS |
| Program Memory (Flash) | 512 KB |
| Data Memory (SRAM) | 64 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| I/O Pins | 53 |
| ADC | 10-bit, up to 1 Msps |
| I2S Modules | 2 |
| SPI Modules | 4 |
| USB | USB 2.0 FS OTG |
| PMP | Parallel Master Port with dual buffers |
| PPS | Peripheral Pin Select |
| Package | 64-pin TQFP (10x10 mm) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC32MX170F512HT-I/PT Pin Configuration
| Pin 1 | SOSCI/RPC13 — Secondary oscillator input or GPIO |
| Pin 2 | SOSCO/RPC14 — Secondary oscillator output or GPIO |
| Pin 3 | RPC15 — General purpose I/O |
| Pin 4 | VSS — Ground |
| Pin 5 | VDD — Power supply (3.3V) |
| Pin 6 | RPC0 — General purpose I/O / JTAG TMS |
| Pin 7 | RPC1 — General purpose I/O / JTAG TCK |
| Pin 8 | RPC2 — General purpose I/O / JTAG TDI |
| Pin 9 | VSS — Ground |
| Pin 10 | VDD — Power supply (3.3V) |
| Pin 11 | RPC3 — General purpose I/O / JTAG TDO |
| Pin 12 | RPB0 — General purpose I/O / PPS |
| Pin 13 | RPB1 — General purpose I/O / PPS |
| Pin 14 | RPB2 — General purpose I/O / PPS |
| Pin 15 | RPB3 — General purpose I/O / PPS |
| Pin 16 | AN0/RPB4 — Analog input 0 or GPIO/PPS |
| Pin 17 | AN1/RPB5 — Analog input 1 or GPIO/PPS |
| Pin 18 | AN2/RPB6 — Analog input 2 or GPIO/PPS |
| Pin 19 | AN3/RPB7 — Analog input 3 or GPIO/PPS |
| Pin 20 | AN4/RPB8 — Analog input 4 or GPIO/PPS |
| Pin 21 | AN5/RPB9 — Analog input 5 or GPIO/PPS |
| Pin 22 | VSS — Ground |
| Pin 23 | VDD — Power supply (3.3V) |
| Pin 24 | AN6/RPB10 — Analog input 6 or GPIO/PPS |
| Pin 25 | AN7/RPB11 — Analog input 7 or GPIO/PPS |
| Pin 26 | AN8/RPB12 — Analog input 8 or GPIO/PPS |
| Pin 27 | AN9/RPB13 — Analog input 9 or GPIO/PPS |
| Pin 28 | VSS — Ground |
| Pin 29 | VDD — Power supply (3.3V) |
| Pin 30 | AN10/RPB14 — Analog input 10 or GPIO/PPS |
| Pin 31 | AN11/RPB15 — Analog input 11 or GPIO/PPS |
| Pin 32 | AN12/RPC6 — Analog input 12 or GPIO |
| Pin 33 | AN13/RPC7 — Analog input 13 or GPIO |
| Pin 34 | AN14/RPC8 — Analog input 14 or GPIO |
| Pin 35 | AN15/RPC9 — Analog input 15 or GPIO |
| Pin 36 | VSS — Ground |
| Pin 37 | VDD — Power supply (3.3V) |
| Pin 38 | RPD0 — General purpose I/O / PPS |
| Pin 39 | RPD1 — General purpose I/O / PPS |
| Pin 40 | RPD2 — General purpose I/O / PPS |
| Pin 41 | RPD3 — General purpose I/O / PPS |
| Pin 42 | RPD4 — General purpose I/O / PPS |
| Pin 43 | RPD5 — General purpose I/O / PPS |
| Pin 44 | RPD6 — General purpose I/O / PPS |
| Pin 45 | RPD7 — General purpose I/O / PPS |
| Pin 46 | RPG0 — General purpose I/O |
| Pin 47 | RPG1 — General purpose I/O |
| Pin 48 | D- — USB D- (USB OTG) |
| Pin 49 | D+ — USB D+ (USB OTG) |
| Pin 50 | VBUS — USB VBUS detect |
| Pin 51 | VUSB — USB 3.3V regulator input |
| Pin 52 | RPF0 — General purpose I/O |
| Pin 53 | RPF1 — General purpose I/O |
| Pin 54 | RPF2 — General purpose I/O |
| Pin 55 | RPF3 — General purpose I/O |
| Pin 56 | RPF4 — General purpose I/O |
| Pin 57 | RPF5 — General purpose I/O |
| Pin 58 | RPF6 — General purpose I/O |
| Pin 59 | RPF7 — General purpose I/O |
| Pin 60 | RPF8 — General purpose I/O |
| Pin 61 | OSC1/CLKI — Primary oscillator input |
| Pin 62 | OSC2/CLKO — Primary oscillator output |
| Pin 63 | MCLR — Master clear reset |
| Pin 64 | RPG9 — General purpose I/O |
Typical Applications
PIC32MX170F512HT-I/PT is suitable for 6 applications: USB Audio Speaker / Soundbar, Graphical HMI Terminal, Industrial Sensor Hub / IoT Gateway, Medical Patient Monitor Interface, Consumer Smart-Home Bridge, Automotive Infotainment Auxiliary MCU.
USB Audio Speaker / Soundbar
The PIC32MX170F512HT-I/PT is well-matched to USB audio designs because it pairs USB 2.0 full-speed OTG with two I2S interfaces and four SPI ports in a single TQFP-64 chip. The 512 KB Flash holds the USB HID + audio class stacks plus DSP effects code, while 64 KB SRAM buffers audio frames without dropping samples at 48 kHz stereo. USB D+/D- lines connect directly to the dedicated pins, and PPS remaps I2S clocks so designers can route audio to the codec with minimal PCB crossover.
Recommended
Graphical HMI Terminal
The Parallel Master Port (PMP) with dual read/write buffers on the PIC32MX170F512HT-I/PT lets engineers drive TFT LCDs up to QVGA without an external controller, while 512 KB Flash holds large bitmap fonts and UI assets. 64 KB SRAM accommodates 16-bit color framebuffer slices for 240x320 panels. The 53 GPIO pins allow additional resistive-touch integration via CTMU. PPS mapping decouples display pins from fixed peripherals, simplifying PCB layout for slim enclosures.
Recommended
Industrial Sensor Hub / IoT Gateway
The PIC32MX170F512HT-I/PT suits industrial sensor hubs because of its industrial -40C to +85C operating range, four SPI buses for multi-sensor expansion, and 53 GPIO for actuator and indicator lines. 64 KB SRAM buffers MQTT/HTTP payload queues during WiFi/Ethernet forwarding. CTMU enables capacitive touch keys for waterproof front faces. The wide 2.3-3.6 V supply tolerates noisy industrial 24 V -> 3.3 V buck rails with simple LDO filtering.
Recommended
Medical Patient Monitor Interface
The PIC32MX170F512HT-I/PT's 10-bit ADC with 1 Msps throughput, USB OTG for tethered transfer, and reliable MIPS32 M4K core deliver dependable signal acquisition for low-end medical patient monitor interfaces. The 512 KB Flash accommodates waveform DSP code (filtering, peak detection), and 64 KB SRAM holds sample buffers. Industrial temperature grade and ROHS compliance support medical device certification baselines.
Recommended
Consumer Smart-Home Bridge
The PIC32MX170F512HT-I/PT powers consumer smart-home bridges because USB OTG tethers to host processors, SPI connects to wireless modules (WiFi/Zigbee), and I2S drives voice prompts. 512 KB Flash holds bridge translation logic and OTA updater, while PPS lets engineers route signals to RF modules on a compact 2-layer PCB. The 53 GPIO handle LED indicators, button inputs, and relay switching.
Recommended
Automotive Infotainment Auxiliary MCU
While the -I (industrial) grade is the base part, the PIC32MX170F512HT-I/PT is often used in non-safety automotive infotainment sub-modules (radio panels, climate controls, secondary displays) because its USB OTG supports media sticks, four SPI buses connect to audio DSPs, and PMP drives auxiliary TFTs. 53 GPIO scales to backlight, key matrix, and rotary encoder inputs. AEC-Q100 grade is not applicable to -I suffix; for AEC-Q100 qualified cousins see PIC32MX variants with /VAO suffix.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX170F512HT-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX170F512H-I/PT | PIC32MX170F512HT-50I/PT | PIC32MX270F256B-I/PT | PIC32MX150F256H-I/PT | PIC32MX170F512HT-V/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (10x10) | TQFP-64 (10x10) - same | TQFP-64 (10x10) - same | TQFP-64 - same | TQFP-64 - same | TQFP-64 (10x10) - same |
| Core | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
| Max CPU Speed | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Flash | 512 KB | 512 KB | 512 KB | 256 KB (-50%) | 256 KB (-50%) | 512 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 32 KB (-50%) | 32 KB (-50%) | 64 KB |
| USB OTG | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +105 C |
| Unit Price (qty 1) | $4.92 | ~$4.92 | $2.53 | $3.40-$3.80 | $3.20-$3.60 | ~$5.10 |
Key Differentiators
- Highest Flash density in TQFP-64 PIC32MX1XX family (vs PIC32MX270F256B-I/PT)
- PPS routing flexibility (vs PIC32MX170F512HT-50I/PT)
- Industrial temperature range baseline (vs PIC32MX170F512HT-V/PT)
Design Notes
Estimated: at 50 MHz active mode the PIC32MX170F512HT-I/PT core draws ~30-40 mA from a 3.3 V rail during full peripheral activity (USB + ADC + SPI). Place a 100 nF + 10 uF ceramic pair within 5 mm of every VDD/VSS pin pair on the TQFP-64 footprint. Keep VUSB decoupled from the main VDD with a dedicated ferrite bead to prevent USB inrush noise from coupling into analog references. Use a 1 uF X7R + 100 nF NP0 combination on AVDD pins when the 10-bit ADC is enabled.
For USB OTG operation on PIC32MX170F512HT-I/PT, route the 90-ohm differential D+/D- pair with controlled impedance and length matching within 150 mils. Keep the USB series resistors (typically 33 ohm) close to the MCU pins 48-49. Place the VBUS resistor divider on pin 50 within 5 mm. Route D+/D- away from PWM signals and switching regulators. The exposed pad variant does not exist on TQFP-64; thermal dissipation relies on inner copper pours stitched under the QFP body.
Do not skip the 10 kohm pull-up on MCLR (pin 63) - even when using internal reset, MCLR must not float. Configure PPS before assigning alternate functions to RPn pins; otherwise I2S, SPI and UART will not map correctly. When migrating from PIC32MX150 to PIC32MX170, verify CTMU register names - although the silicon is similar, the bit fields differ. Avoid pulling VUSB above 3.6 V or USB PHY will latch-up.
When driving a TFT LCD via PMP on PIC32MX170F512HT-I/PT, limit the read/write strobe pulse width to keep below 50 ns and add 33 ohm series resistors on data/control lines to dampen ringing. For I2S audio, keep LRCK and BCLK traces <50 mm and length-matched; use ground shielding between I2S pairs and switching signals. Configure the reference clock source for the RTCC (SOSC vs LPRC) carefully to avoid drift on timekeeping pins.
Compliance Information
RoHS and REACH compliance per Microchip product page. Industrial temperature grade; not AEC-Q100 qualified - automotive designers should request /VAO or /VPT variants. Conflict-minerals status compliant per Microchip DRC declaration.
