PIC32MX270F512L-50I/PF - 50MHz 32-bit MCU 512KB Flash | Microchip
MPN: PIC32MX270F512L-50I/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.65 | $7.65 |
| 10 | $7.1 | $71.00 |
| 100 | $6.3 | $630.00 |
| 500 | $5.75 | $2,875.00 |
| 1,000 | $5.2 | $5,200.00 |
PIC32MX270F512L-50I/PF Overview
A 32-bit microcontroller (MCU) is an embedded processor that executes instructions on 32-bit-wide data paths, balancing high computational throughput with deterministic real-time control. Within the broader taxonomy of integrated circuits, PIC32 MCUs sit above 8-bit/16-bit MCUs (PIC10/12/16/18) and below 32-bit application processors (e.g., Cortex-A class SoCs), enabling audio processing, USB stacks, and graphical user interfaces that exceed what 8-bit cores can deliver while retaining deterministic interrupt response. This device ships 81 programmable I/O lines and offers 10-bit ADC, multiple timers, and a CIP (Core Independent Peripherals) suite for offloading tasks from the CPU.
Key differentiating specifications include 50 MHz core clock, 83 DMIPS, hardware multiply/divide, 16-bit wide instruction words, 5-stage pipeline, trace-friendly debug, and a USB OTG engine that simplifies peripheral design. The combination of PMP and I2S enables direct drive of TFT displays and audio codecs without external logic. PPS allows remapping of digital peripheral I/O to most pins, simplifying PCB layout and reducing the bill of materials.
The architecture uses a load/store MIPS32 M4K core with separate 32-bit Flash and SRAM buses, allowing concurrent instruction fetch and dual-port SRAM access for USB plus LCD buffer use. The internal 8 MHz Fast RC oscillator can be PLL-multiplied to 50 MHz, eliminating external crystals in cost-sensitive designs.
Typical applications include Bluetooth audio docks, USB human-interface devices (HIDs) such as keyboards and mice, low-cost graphical instruments, point-of-sale terminals, and industrial control panels that require USB connectivity plus an MCU-grade graphical display. The 100-pin TQFP footprint is friendly for hand-rework and 4-layer FR-4 designs.
Design consideration: this part is the OTG/USB variant of the PIC32MX1XX/2XX/5XX family; the non-USB variant PIC32MX230F512L shares the same pinout but lacks the USB transceiver. Engineers should verify boot configuration word programming and ensure crystal accuracy stays within the USB Full-Speed tolerance window before committing to volume production.
This page synthesizes distributor pricing and inventory across DigiKey, Mouser, LCSC, and MicrochipDirect together with practical design notes not aggregated in the manufacturer datasheet, helping procurement and firmware teams shorten evaluation cycles.
Drop-in alternatives for PIC32MX270F512L-50I/PF — 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 PIC32MX270F512L-50I/PF (same form factor and footprint) — differing in Package, ADC, Core Architecture, Operating Temperature Range, DMA Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX270F512L-50I/PT
✅ Drop-In✓ In Stock
$4.65 / Unit
View Datasheet →PIC32MX270F512L-I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX270F256L-50I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX230F512L-50I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX570F512L-50I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX270F512L-50I/PF Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum Clock Frequency | 50 MHz |
| DMIPS Performance | 83 DMIPS |
| Program Flash Memory | 512 KB (512K x 8) |
| SRAM | 64 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Operating Temperature Range | -40C to +85C (Industrial) |
| I/O Pins | 81 |
| USB Module | USB 2.0 Full-Speed OTG |
| SPI Modules | 4 |
| I2S Modules | 2 |
| ADC | 10-bit |
| Parallel Master Port (PMP) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Package | 100-pin TQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC32MX270F512L-50I/PF Pin Configuration
| Pin 1 | RG15/SDA2/SDI2/RF5 — I/O port / I2C2 SDA / SPI2 SDI / external interrupt |
| Pin 2 | RPVREF/AN11/RB11 — I/O port / analog input |
| Pin 3 | PGED2/RPG6 — I/O port / programming debug data |
| Pin 4 | PGEC2/RPG7 — I/O port / programming debug clock |
| Pin 5 | PGEC1/RPB5 — I/O port / programming debug clock |
| Pin 6 | PGED1/RPB0 — I/O port / programming debug data |
| Pin 7 | RF3/USBID/RPF3 — I/O port / USB ID (OTG) |
| Pin 8 | RF2/RPF2 — I/O port |
| Pin 9 | RF8/RPF8 — I/O port |
| Pin 10 | VDD — Supply voltage |
| Pin 11 | AVDD — Analog supply voltage |
| Pin 12 | AVSS — Analog ground |
| Pin 13 | VREF+/CVREF+/AN0/RB0 — Analog reference + / ADC input |
| Pin 14 | VREF-/CVREF-/AN1/RB1 — Analog reference - / ADC input |
| Pin 15 | AN2/RB2 — Analog input |
| Pin 16 | AN3/RB3 — Analog input |
| Pin 17 | AN4/RB4 — Analog input |
| Pin 18 | AN5/RB5 — Analog input |
| Pin 19 | AN6/RB6 — Analog input |
| Pin 20 | AN7/RB7 — Analog input |
| Pin 21 | AN8/RB8 — Analog input |
| Pin 22 | AN9/RB9 — Analog input |
| Pin 23 | AN10/RB10 — Analog input |
| Pin 24 | AN12/RB12 — Analog input |
| Pin 25 | AVSS — Analog ground |
| Pin 26 | AVDD — Analog supply voltage |
| Pin 27 | VDD — Supply voltage |
| Pin 28 | VSS — Digital ground |
| Pin 29 | OSC1/CLKI/RC12 — Crystal oscillator input |
| Pin 30 | OSC2/CLKO/RC15 — Crystal oscillator output |
| Pin 31 | VSS — Digital ground |
| Pin 32 | VDD — Supply voltage |
| Pin 33 | RPG0 — I/O port |
| Pin 34 | RPG1 — I/O port |
| Pin 35 | RPG2 — I/O port |
| Pin 36 | RPG3 — I/O port |
| Pin 37 | RPG4 — I/O port / external interrupt |
| Pin 38 | RPG5 — I/O port / external interrupt |
| Pin 39 | RPG6 — I/O port |
| Pin 40 | RPG7 — I/O port |
| Pin 41 | VSS — Digital ground |
| Pin 42 | VDD — Supply voltage |
| Pin 43 | RA0 — I/O port |
| Pin 44 | RA1 — I/O port |
| Pin 45 | RA2 — I/O port |
| Pin 46 | RA3 — I/O port |
| Pin 47 | RA4 — I/O port |
| Pin 48 | RA5 — I/O port |
| Pin 49 | RA6 — I/O port |
| Pin 50 | RA7 — I/O port |
| Pin 51 | VSS — Digital ground |
| Pin 52 | VDD — Supply voltage |
| Pin 53 | RB13 — I/O port |
| Pin 54 | RB14 — I/O port |
| Pin 55 | RB15 — I/O port |
| Pin 56 | RC1/RPC1 — I/O port |
| Pin 57 | RC2/RPC2 — I/O port |
| Pin 58 | RC3/RPC3 — I/O port |
| Pin 59 | RC4/RPC4 — I/O port |
| Pin 60 | RD0/RPD0 — I/O port |
| Pin 61 | RD1/RPD1 — I/O port |
| Pin 62 | RD2/RPD2 — I/O port |
| Pin 63 | RD3/RPD3 — I/O port |
| Pin 64 | RD4/RPD4 — I/O port |
| Pin 65 | RD5/RPD5 — I/O port |
| Pin 66 | RD6/RPD6 — I/O port |
| Pin 67 | RD7/RPD7 — I/O port |
| Pin 68 | VSS — Digital ground |
| Pin 69 | VDD — Supply voltage |
| Pin 70 | RF0/RPF0 — I/O port |
| Pin 71 | RF1/RPF1 — I/O port |
| Pin 72 | RF4/RPF4 — I/O port |
| Pin 73 | RF5/RPF5 — I/O port |
| Pin 74 | RF6/RPF6 — I/O port |
| Pin 75 | RF7/RPF7 — I/O port |
| Pin 76 | RD8 — I/O port |
| Pin 77 | RD9 — I/O port |
| Pin 78 | RD10 — I/O port |
| Pin 79 | RD11 — I/O port |
| Pin 80 | RD12 — I/O port |
| Pin 81 | RD13 — I/O port |
| Pin 82 | RD14 — I/O port |
| Pin 83 | RD15 — I/O port |
| Pin 84 | VSS — Digital ground |
| Pin 85 | VDD — Supply voltage |
| Pin 86 | RE0 — I/O port |
| Pin 87 | RE1 — I/O port |
| Pin 88 | RE2 — I/O port |
| Pin 89 | RE3 — I/O port |
| Pin 90 | RE4 — I/O port |
| Pin 91 | RE5 — I/O port |
| Pin 92 | RE6 — I/O port |
| Pin 93 | RE7 — I/O port |
| Pin 94 | D+/RG2 — USB D+ data line |
| Pin 95 | D-/RG3 — USB D- data line |
| Pin 96 | VSS — Digital ground |
| Pin 97 | VDD — Supply voltage |
| Pin 98 | RG0 — I/O port |
| Pin 99 | RG1 — I/O port |
| Pin 100 | RG14/SCL1 — I/O port / I2C1 clock |
Typical Applications
PIC32MX270F512L-50I/PF is suitable for 6 applications: Bluetooth Audio Docks and Speakers, USB Human Interface Devices (HID), Low-Cost Graphical Instruments, Point-of-Sale Terminals, Industrial Control Panels with Touch, Consumer Wearable Chargers.
Bluetooth Audio Docks and Speakers
The PIC32MX270F512L-50I/PF is Microchip's reference MCU for Bluetooth audio docks via the dedicated PIC32MX270F512L Bluetooth Audio PIM and dev kit. Its two I2S modules drive external audio DACs and codecs such as the CS4344 or WM8960 while the four SPI modules interface to Bluetooth transceivers. The 50 MHz MIPS32 M4K core decodes SBC and AAC streams in real time at 83 DMIPS without taxing the bus, and the 64 KB SRAM provides headroom for buffering plus UI state. Designers favor this part for short time-to-market audio docks that combine USB playback with Bluetooth streaming.
Recommended
USB Human Interface Devices (HID)
The PIC32MX270F512L-50I/PF's Full-Speed USB 2.0 OTG controller makes it a drop-in solution for USB keyboards, mice, game controllers, and custom HID peripherals. With 81 programmable I/O lines plus Peripheral Pin Select, designers can remap any digital peripheral to any pin without PCB respins, ideal for matrix-scanned keypads and high-density gaming controllers. The 50 MHz core handles USB polling plus custom protocol overlays at low interrupt latency, while the 512 KB Flash stores HID descriptor tables plus application firmware.
Recommended
Low-Cost Graphical Instruments
In handheld multimeters and test instruments, the PIC32MX270F512L-50I/PF provides the 32-bit throughput plus graphical drive that 8-bit PIC MCUs cannot. The Parallel Master Port with dual buffers directly interfaces TFT LCDs (e.g., 320x240 QVGA) at sufficient refresh rates for menu navigation and waveform display. The 10-bit ADC plus 50 MHz MIPS core delivers 500 ksps conversions with DMA for swept measurements without CPU stall. The 2.3 V to 3.6 V supply matches single-cell Li-ion designs common in portable instruments.
Recommended
Point-of-Sale Terminals
POS terminals gain reliable USB connectivity plus LCD-driven receipts and menus when built around the PIC32MX270F512L-50I/PF. The integrated USB OTG controller supports host mode for barcode readers and printer peripherals, while the PMP drives character or graphical LCDs directly without external logic. With 64 KB SRAM and 512 KB Flash, the part holds USB stacks, printer drivers, and secure firmware updates. Peripheral Pin Select reduces PCB routing complexity in space-constrained terminal enclosures.
Recommended
Industrial Control Panels with Touch
Factory-floor HMI panels benefit from the PIC32MX270F512L-50I/PF combination of USB for configuration plus PMP for graphical TFTs at the 50 MHz throughput level. The 81 I/O plus PPS handle keypad scanning, LED driving, and CAN/RS-485 co-existence via external transceivers. Industrial -40C to +85C operation across 2.3 V to 3.6 V suits 24 V-bus-derived rails after buck regulation. Compared with discrete MPUs, this part offers deterministic interrupt response required for safety-critical industrial control loops.
Recommended
Consumer Wearable Chargers
USB-OTG-enabled wearables, smartwatches, and fitness bands can use the PIC32MX270F512L-50I/PF as a charging cradle MCU plus diagnostic link. The USB OTG controller enumerates as a charger or as a CDC device for tethered firmware updates; 81 I/O lines handle LED indicators, button inputs, and I2C sensor hubs. The 50 MHz MIPS32 M4K executes USB stacks and BLE passthrough commands at low active current thanks to Microchip's nanoWatt power-saving modes. The 100-pin TQFP package fits mid-density cradle designs.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX270F512L-50I/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX270F512L-50I/PT | PIC32MX270F512L-I/PF | PIC32MX270F256L-50I/PF | PIC32MX230F512L-50I/PF | PIC32MX570F512L-50I/PF |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-100 (14x14) | TQFP-100 (14x14) - same | TQFP-100 (14x14) - same | TQFP-100 (14x14) - same | TQFP-100 (14x14) - same | TQFP-100 (14x14) - same |
| Core Architecture | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit |
| Maximum Clock | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 256 KB (-50%) | 512 KB | 512 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| USB Module | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | None (USB pins bonded to NC) | USB 2.0 Full-Speed OTG |
| 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 |
Key Differentiators
- Bluetooth audio dev kit validated silicon (vs PIC32MX230F512L-50I/PF)
- Same 512 KB Flash footprint as 256 KB sibling (vs PIC32MX270F256L-50I/PF)
- Industrial temperature variant in same family (vs PIC32MX270F512L-I/PF)
Design Notes
Estimated: at 50 MHz core, 3.3 V supply, and full USB HID activity, the PIC32MX270F512L-50I/PF draws approximately 30 mA active and 200 uA sleep with nanoWatt peripherals. For USB host applications add another 15 mA for VBUS. Use a bulk-decoupled 3.3 V LDO (e.g., 1117-3.3) followed by 10 uF and 0.1 uF ceramic caps at each VDD pin pair. With 5 VDD pins distributed every 20-25 pins around the 100-pin TQFP perimeter, place decoupling caps on each adjacent pair to reduce switching noise that otherwise couples into the 10-bit ADC reference.
For USB Full-Speed OTG designs, keep the D+/D- traces at 90 ohms differential, length-matched within 150 mil, and route over a continuous ground plane. Place the 15 kohm USB pull-down resistors on D+ and D- as close as possible to the PIC32 pads. The 12 MHz USB reference clock must be supplied from the internal PLL configured for a 48 MHz USB clock; a 0.1 uF cap at each AVDD/AVSS pin is required for ADC accuracy.
Two common pitfalls in PIC32MX270F512L designs: (1) configuration word settings - the JTAGEN and DEBUG bits must be cleared on production parts to prevent JTAG lock-out and to free the PGEC/PGED pins as I/O; (2) the NVM erase/write time requires the 8 MHz internal RC plus PLL to be stable for at least 30 ms before Flash operations; do not attempt Flash writes from a source < 30 ms after chip reset. Use the unlock sequence (0xAA996655 + 0x556699AA) followed by NVMKEY to prevent accidental locks.
Compliance Information
RoHS compliance per Microchip product page. Not AEC-Q100 qualified - this is a commercial/industrial MCU; choose AEC-Q100-qualified PIC32 from PIC32MX or dsPIC33 families for automotive.
