PIC32MX170F512LT-50I/GJX - 50MHz 32-bit MCU 512KB Flash TFBGA-100 | Microchip
MPN: PIC32MX170F512LT-50I/GJX ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.45 | $7.45 |
| 10 | $6.71 | $67.10 |
| 100 | $5.99 | $599.00 |
| 500 | $5.4 | $2,700.00 |
| 1,000 | $4.85 | $4,850.00 |
PIC32MX170F512LT-50I/GJX Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (RAM), and a rich set of peripherals such as timers, ADC, communication interfaces, and GPIO into one device. Within the semiconductor hierarchy, MCUs sit under microprocessors (MPU) on one side and ASICs on the other, optimized for embedded control rather than high-throughput computation. The PIC32MX1xx/2xx family specifically targets 32-bit performance at 5V-tolerant GPIO operation, which is uncommon in modern Cortex-M based MCUs.
Key features include 50 MHz/83 DMIPS core performance, 512 KB Flash program memory, 64 KB SRAM, 16-bit parallel master port (PMP) with dual buffers for graphics or external memory, 5V-tolerant I/O, an integrated 10-bit ADC, USB 2.0 full-speed device/host/OTG, two I2C and two UART modules, plus 5 16-bit timers/counters. The part carries the -50I industrial temperature grade (-40C to +85C) and ships in tape-and-reel.
Architecturally, the PIC32MX1xx family uses a MIPS32 M4K core with single-cycle multiply and hardware divide, supported by a prefetch cache to mitigate Flash wait-states at high clock rates. PPS remapping eliminates pin-peripheral lock-in, allowing developers to reassign digital peripherals to most I/O pins without board rework, which significantly simplifies PCB routing.
Typical applications include USB peripherals (HID, CDC, mass storage), low-cost graphics interfaces via PMP, IoT edge nodes, consumer audio devices using I2S, and industrial control panels. Its 5V-tolerant GPIO and CTMU make it well suited for capacitive touch human-machine interfaces.
When designing with the GJX TFBGA-100 package, allocate a 7x7 mm land pattern with microvia-compatible pad design and ensure JTAG/ICSP trace lengths are short. PPS must be configured at startup before any peripheral is enabled, or peripherals will remain mapped to their default pins.
This page synthesizes distributor pricing, TFBGA-100 pin-compatible alternatives from the PIC32MX1xx/2xx family, and practical PPS-routing design notes not found in the standalone datasheet.
Drop-in alternatives for PIC32MX170F512LT-50I/GJX — 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-50I/GJX (same form factor and footprint) — differing in Package, ADC, DMA Channels, Core Architecture, SPI Modules.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX170F512LT-I/GJX
✅ Drop-In✓ In Stock
$5.4 / Unit
View Datasheet →PIC32MX270F512LT-50I/GJX
✅ Drop-In✓ In Stock
$4.45 / Unit
View Datasheet →PIC32MX170F512L-50I/PF
✅ Drop-In✓ In Stock
$5.55 / Unit
View Datasheet →PIC32MX170F512L-I/PT
✅ Drop-In✓ In Stock
$4.2 / Unit
View Datasheet →PIC32MX170F512HT-50I/PT
✅ Drop-In✓ In Stock
$4.32 / Unit
View Datasheet →PIC32MX150F256LT-50I/GJX
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.21 / Unit
View Datasheet →PIC32MX170F512LT-50I/GJX Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Core Frequency | 50 MHz |
| DMIPS | 83 DMIPS |
| Program Memory (Flash) | 512 KB |
| Data Memory (RAM) | 64 KB |
| Package | TFBGA-100 (GJX) 7x7 mm |
| Pin Count | 100 |
| Operating Voltage | 2.3 V to 3.6 V |
| I/O Voltage Tolerance | 5 V tolerant |
| Operating Temperature | -40 C to +85 C (Industrial) |
| ADC | 10-bit, up to 16 channels |
| Comparators | 3 |
| CTMU | Yes |
| RTCC | Yes |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| SPI | 4 modules |
| I2C | 2 modules |
| UART | 2 modules |
| I2S | 2 modules |
| PMP | Yes, dual read/write buffers |
| Timers | 5 x 16-bit |
| PPS | Yes |
| Mounting Type | Surface Mount (BGA) |
| MSL Level | 3 |
| RoHS Status | Compliant |
PIC32MX170F512LT-50I/GJX tfbga-100 (gjx) 7x7 mm Pin Configuration Guide
Pin configuration for PIC32MX170F512LT-50I/GJX (tfbga-100 (gjx) 7x7 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-50I/GJX.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MX170F512LT-50I/GJX is suitable for 6 applications: USB Human Interface Device (HID), Low-Cost Graphics Display Interface, IoT Edge Sensor Node, Consumer Audio Device with I2S Codec, Industrial Control Panel, USB Mass Storage Device.
USB Human Interface Device (HID)
The PIC32MX170F512LT-50I/GJX's integrated USB 2.0 Full-Speed OTG transceiver and 64 KB RAM make it well suited to USB HID class peripherals such as keyboards, mice, game controllers, and custom input devices. The MPLAB Harmony USB stack provides HID bootloader support, allowing field firmware updates without external programmers. The 50 MHz core delivers ample headroom for HID report parsing plus mainline application code, while 5V-tolerant GPIO interfaces directly to legacy switch matrices without level shifters.
Recommended
Low-Cost Graphics Display Interface
The PIC32MX170F512LT-50I/GJX integrates a 16-bit Parallel Master Port (PMP) with dual read/write buffers, enabling direct connection to TFT LCD controllers and QVGA graphics displays. The 50 MHz core plus DMA-fed PMP sustains full-screen refresh at 30 fps for typical menu UIs, while the 5V-tolerant I/O drives legacy STN displays. Combined with the 512 KB Flash and CTMU for touch sensing, this MCU is a compact solution for appliance HMI panels where an external GPU is overkill.
Recommended
IoT Edge Sensor Node
With 16 channels of 10-bit ADC, three comparators, a CTMU for capacitive sensing, and an integrated RTCC, the PIC32MX170F512LT-50I/GJX can aggregate multiple analog sensors in a single chip. The 5V-tolerant I/O simplifies interfacing to industrial 24V-conditioned sensor outputs via simple resistor dividers. PPS routing lets the same PCB accommodate SPI, I2C, or UART sensor variants without rework. The 64 KB RAM is sufficient for buffering one second of 1 kHz sensor data before transmission.
Recommended
Consumer Audio Device with I2S Codec
The PIC32MX170F512LT-50I/GJX features two I2S modules that interface directly to audio codecs for stereo DAC playback at 48 kHz and above. Combined with 512 KB Flash for waveform storage and a DMA-fed I2S peripheral that offloads the CPU, this MCU powers Bluetooth speakers, headphone amplifiers, and simple alarm clocks. The 5V GPIO tolerates direct connection to legacy audio jack detect circuits, eliminating external protection diodes on budget designs.
Recommended
Industrial Control Panel
The PIC32MX170F512LT-50I/GJX's industrial -40C to +85C temperature range, 5V-tolerant I/O, and CTMU-based capacitive touch make it suitable for factory-floor HMI panels and machine controllers. The 50 MHz M4K core executes Modbus RTU masters and PID control loops concurrently, while the RTCC timestamps event logs. PMP can drive character LCDs or simple TFTs common in industrial equipment, and the three analog comparators provide hardware overcurrent detection independent of the ADC.
Recommended
USB Mass Storage Device
For USB memory sticks, card readers, or USB-to-SPI bridges, the PIC32MX170F512LT-50I/GJX provides an integrated USB 2.0 Full-Speed peripheral plus an SPI interface for connecting external Flash or SD cards. The MSD class driver in MPLAB Harmony supports SCSI transparent command set, allowing the device to enumerate as a standard removable disk on Windows, macOS, and Linux without custom drivers. The 64 KB RAM buffers typical 4 KB MSD transfer requests with low CPU overhead.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX170F512LT-50I/GJX — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX170F512LT-I/GJX | PIC32MX270F512LT-50I/GJX | PIC32MX170F512L-50I/PF | PIC32MX170F512L-I/PT | PIC32MX170F512HT-50I/PT | PIC32MX150F256LT-50I/GJX |
|---|---|---|---|---|---|---|---|
| Package | TFBGA-100 (GJX) 7x7 mm | TFBGA-100 (GJX) - same | TFBGA-100 (GJX) - same | TFBGA-100 (PF) - same | TQFP-100 (PT) 12x12 mm | TQFP-100 (PT) - same | TFBGA-100 (GJX) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB + extra region | 256 KB |
| RAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB |
| Max Clock | 50 MHz | 40 MHz | 50 MHz | 50 MHz | 40 MHz | 50 MHz | 50 MHz |
| 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 | USB 2.0 FS OTG |
| UART Count | 2 | 2 | 6 | 2 | 2 | 2 | 2 |
| 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 +85 C | -40 C to +85 C |
Key Differentiators
- Smallest 100-pin footprint in the family (vs PIC32MX170F512L-I/PT)
- Higher peripheral count than PIC32MX170 at same price tier (vs PIC32MX150F256LT-50I/GJX)
- Drop-in upgrade path to PIC32MX270 (vs PIC32MX270F512LT-50I/GJX)
Design Notes
The TFBGA-100 (GJX) package uses a 7x7 mm body with 0.5 mm ball pitch on a 10x10 ball grid. Per Microchip datasheet DS60001185K section 4, the recommended land pad is 0.30 mm diameter non-solder-mask-defined (NSMD) with a 0.40 mm solder mask opening. Microvias-in-pad are acceptable but must be filled and plated over to prevent solder wicking. Apply a 4-6 mil paste deposit per ball and use SAC305 (Sn96.5/Ag3.0/Cu0.5) type 4 paste for consistent reflow.
Peripheral Pin Select (PPS) must be configured before enabling any digital peripheral in software. The default PPS mapping assigns I2C1 to fixed pins but routes SPI, UART, and timers to default locations only. If your layout places a peripheral on non-default pins, call the PPS unlock and remap sequence in SystemInit() before peripheral initialization; otherwise the peripheral will appear dead. Per datasheet section 11, the PPS unlock register requires a specific 16-bit key sequence that is not optional.
The PIC32MX170F512LT-50I/GJX operates from a single 2.3-3.6 V supply. Place a 10 uF bulk capacitor near VDDCORE and a 0.1 uF decoupling cap within 3 mm of each VDDPIN pin pair. The USB VBUS pin (if used in host mode) requires a 5 V supply that is independent of the 3.3 V core rail. The internal voltage regulator generates the 1.8 V core from VDD; no external core supply is needed, but ensure the VCAP pin has at least 10 uF of low-ESR ceramic capacitance.
The USB DP and DM traces must be routed as a 90 ohm differential pair with length matching within 150 mil. Per USB 2.0 specification, vias are allowed but should be limited to one per trace. Place the 15 kohm pull-down resistor on DM close to the MCU pin. For 5V-tolerant GPIO used as outputs, slew rate limiting can be enabled via the CNPU/CNPD register to reduce EMI on long PCB traces to external connectors.
Do not enable the JTAG or TRACE pins in production firmware without external pull-downs - floating JTAG pins can cause unintended debug entry or extra current draw. The RTCC requires a 32.768 kHz crystal or external clock; without one the calendar will not advance. The CTMU current source must be calibrated per the datasheet procedure for accurate time measurement; using the default trim value introduces 20-30% error in capacitive touch applications.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - not suitable for automotive safety-critical applications. Industrial temperature grade -40C to +85C supports non-automotive industrial use cases.
