PIC32MX270F512L-V/PF - 512KB Flash 40MHz USB MCU | Microchip
MPN: PIC32MX270F512L-V/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.45 | $7.45 |
| 10 | $6.89 | $68.90 |
| 100 | $6.21 | $621.00 |
| 500 | $5.65 | $2,825.00 |
| 1,000 | $5.1 | $5,100.00 |
PIC32MX270F512L-V/PF Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile Flash program memory, volatile SRAM, and configurable digital and analog peripherals. The PIC32MX family uses the MIPS M4K 32-bit RISC core with a 5-stage pipeline, occupying the position 32-bit MCU -> microcontroller -> embedded processor -> semiconductor. Compared with 8-bit AVR/PIC16, the PIC32MX delivers multi-MHz 32-bit data paths and USB on-chip, which 8-bit MCUs typically cannot provide.
Key features include USB 2.0 full-speed device/host/OTG with on-chip transceiver, two I2S/SSP audio paths, 81 general-purpose I/O lines, 5 timers/counters, 3 compare/PWM modules, RTCC with calendar mode, and a CTMU (Charge Time Measurement Unit) for capacitive-touch button implementation without external analog ICs. The on-chip 1.5 KB USB endpoint RAM and dedicated DMA to USB simplify Audio Class 1.0 device designs.
Architecturally, the PIC32MX270 integrates a hardware multiplier, single-cycle MAC, prefetch module with cache-like branching optimization, and a peripheral bus running at half the system clock for low-overhead I/O. The 100-pin TQFP package exposes dedicated USB D+/D- pins, multiple ICSP pairs, and ample ADC inputs for mixed-signal designs.
Typical applications include Bluetooth audio sink/source devices using the PIC32 Bluetooth Audio Development Kit (PQAMP), USB headsets, USB MIDI controllers, capacitive-touch user interfaces via CTMU, and low-cost 32-bit general-purpose controllers. The audio-friendly I2S ports and full-speed USB make it a workhorse for prosumer audio products.
Designers should note that the PCI43701 Bluetooth Audio PIM Information Sheet (per the Microchip datasheet 50002314A) is the canonical reference design, and 100-pin TQFP compatibility between PIC32MX170/230/270 L-pin variants is verified for migration between Flash densities. Always place decoupling within 5 mm of every VDD/VSS pin.
This page synthesizes distributor pricing, drop-in alternatives across the PIC32MX family, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC32MX270F512L-V/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-V/PF (same form factor and footprint) — differing in ADC, Package, Timers, USB, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX270F512L-50I/PF
✅ Drop-In✓ In Stock
$5.2 / Unit
View Datasheet →PIC32MX270F512LT-V/PF
✅ Drop-In✓ In Stock
$2.1 / Unit
View Datasheet →PIC32MX270F512LT-I/PF
✅ Drop-In✓ In Stock
$5.1 / Unit
View Datasheet →PIC32MX270F512LT-50I/PF
✅ Drop-In✓ In Stock
$6.32 / Unit
View Datasheet →PIC32MX270F512L-I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX250F256L-V/PF
✅ Drop-In✓ In Stock
$3.4 / Unit
View Datasheet →PIC32MX230F128L-V/PF
✅ Drop-In✓ In Stock
$4.31 / Unit
View Datasheet →PIC32MX270F512L-V/PF Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K (32-bit RISC) |
| Core Count | 1 |
| Maximum Core Frequency | 40 MHz (50 MHz for -50 speed grade) |
| Program Memory | 512 KB Flash |
| Data Memory (SRAM) | 64 KB |
| General-Purpose I/O | 81 |
| Package | 100-pin TQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| USB Interface | USB 2.0 Full-Speed Device/Host/OTG with on-chip transceiver |
| Audio Interface | I2S / SSP (2 paths) |
| ADC | 10-bit |
| CTMU (Capacitive Touch) | Yes (on-chip) |
| RTCC (Real-Time Clock/Calendar) | Yes |
| Timers / Compare-PWM | 5 timers, 3 compare-PWM |
| Operating Temperature | -40C to +105C (extended industrial) |
| Supply Voltage (VDD) | 2.3 V to 3.6 V (per family datasheet) |
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-free) |
PIC32MX270F512L-V/PF Pin Configuration
| Pin 1 | RPB0/RF3/AN0 — Remappable GPIO / AN0 / CTMU input |
| Pin 10 | VSS — Ground reference |
| Pin 11 | VDD — Core supply 2.3-3.6 V |
| Pin 12 | RPB5/RD14/AN5 — Remappable GPIO / AN5 |
| Pin 13 | PGED3/RPB6/RD15/AN6 — ICSP data / GPIO / AN6 |
| Pin 14 | PGEC3/RPB7/RD16/AN7 — ICSP clock / GPIO / AN7 |
| Pin 15 | PGED1/RPB8/SDA1/CTED1 — ICSP data / I2C SDA / CTED |
| Pin 16 | PGEC1/RPB9/SCL1/CTED2 — ICSP clock / I2C SCL / CTED |
| Pin 17 | VDD — I/O supply 2.3-3.6 V |
| Pin 18 | AVDD — Analog supply |
| Pin 19 | AVSS — Analog ground |
| Pin 20 | AN13/C1IND/RPG6 — Analog input / Remappable GPIO |
| Pin 21 | AN14/C1INC/RPG7 — Analog input / Remappable GPIO |
| Pin 22 | AN15/C2IND/RPG8 — Analog input / Remappable GPIO |
| Pin 23 | AN16/C2INC/RPG9 — Analog input / Remappable GPIO |
| Pin 24 | VDD — I/O supply |
| Pin 25 | VSS — Ground |
| Pin 26 | OSC1/RC12 — Crystal/oscillator input |
| Pin 27 | OSC2/RC13 — Crystal/oscillator output |
| Pin 28 | SOSC1/RPC0 — Secondary oscillator / GPIO |
| Pin 29 | SOSC2/RPC1 — Secondary oscillator / GPIO |
| Pin 30 | D+/RG2 — USB D+ data |
| Pin 31 | D-/RG3 — USB D- data |
| Pin 32 | VBUS/RG5 — USB VBUS detect / GPIO |
| Pin 33 | VUSB — USB transceiver supply |
| Pin 34 | VDD — I/O supply |
| Pin 35 | VSS — Ground |
| Pin 36 | RPB10/RF4/AN8 — Remappable GPIO / AN8 |
| Pin 37 | RPB11/RF5/AN9 — Remappable GPIO / AN9 |
| Pin 38 | PGED2/RPB12/RF6/AN10 — ICSP data / AN10 |
| Pin 39 | PGEC2/RPB13/RF7/AN11 — ICSP clock / AN11 |
| Pin 40 | RPB14/RF8/AN12 — Remappable GPIO / AN12 |
| Pin 41 | RPB15/RF9/AN13 — Remappable GPIO / AN13 |
| Pin 42 | VDD — I/O supply |
| Pin 43 | VSS — Ground |
| Pin 44 | AN17/RPC2 — Analog input / GPIO |
| Pin 45 | AN18/RPC3 — Analog input / GPIO |
| Pin 46 | AN19/RPC4 — Analog input / GPIO |
| Pin 47 | AN20/RPC5 — Analog input / GPIO |
| Pin 48 | AN21/RPC6 — Analog input / GPIO |
| Pin 49 | AN22/RPC7 — Analog input / GPIO |
| Pin 50 | AN23/RPC8 — Analog input / GPIO |
| Pin 51 | VDD — I/O supply |
| Pin 52 | VSS — Ground |
| Pin 53 | RPD0/RTCC/RF0 — RTCC / Remappable GPIO |
| Pin 54 | RPD1/RF1 — Remappable GPIO |
| Pin 55 | RPD2/RF2 — Remappable GPIO |
| Pin 56 | RPD3/OC3/RFD0 — Remappable GPIO / OC3 |
| Pin 57 | RPD4/OC4/RFD1 — Remappable GPIO / OC4 |
| Pin 58 | RPD5/OC5/RFD2 — Remappable GPIO / OC5 |
| Pin 59 | RPD6/RFD3 — Remappable GPIO |
| Pin 60 | RPD7/RFD4 — Remappable GPIO |
| Pin 61 | RPD8/RTCC2/RFD5 — Remappable GPIO / RTCC2 |
| Pin 62 | RPD9/RFD6 — Remappable GPIO |
| Pin 63 | RPD10/RFD7 — Remappable GPIO |
| Pin 64 | RPD11/RFD8 — Remappable GPIO |
| Pin 65 | RPD12/RFD9 — Remappable GPIO |
| Pin 66 | RPD13/RFD10 — Remappable GPIO |
| Pin 67 | RPD14/RFD11 — Remappable GPIO |
| Pin 68 | RPD15/RFD12 — Remappable GPIO |
| Pin 69 | VDD — I/O supply |
| Pin 70 | VSS — Ground |
| Pin 71 | RPE0/PMD0/SDA2 — PMP data / I2C SDA2 |
| Pin 72 | RPE1/PMD1/SCL2 — PMP data / I2C SCL2 |
| Pin 73 | RPE2/PMD2 — PMP data |
| Pin 74 | RPE3/PMD3 — PMP data |
| Pin 75 | RPE4/PMD4 — PMP data |
| Pin 76 | RPE5/PMD5 — PMP data |
| Pin 77 | RPE6/PMD6 — PMP data |
| Pin 78 | RPE7/PMD7 — PMP data |
| Pin 79 | RPE8/PMA0 — PMP address |
| Pin 80 | RPE9/PMA1 — PMP address |
| Pin 81 | RPE10/PMA2 — PMP address |
| Pin 82 | RPE11/PMA3 — PMP address |
| Pin 83 | RPE12/PMA4 — PMP address |
| Pin 84 | RPE13/PMA5 — PMP address |
| Pin 85 | RPE14/PMA6 — PMP address |
| Pin 86 | RPE15/PMA7 — PMP address |
| Pin 87 | RPF0/PMRD — PMP read strobe |
| Pin 88 | RPF1/PMWR — PMP write strobe |
| Pin 89 | RPF2/PMA8 — PMP address |
| Pin 90 | RPF3/PMA9 — PMP address |
| Pin 91 | RPF4/PMA10 — PMP address |
| Pin 92 | RPF5/PMA11 — PMP address |
| Pin 93 | RPF6/PMA12 — PMP address |
| Pin 94 | RPF7/PMA13 — PMP address |
| Pin 95 | RPF8/PMA14 — PMP address |
| Pin 96 | RPF9/PMA15 — PMP address |
| Pin 97 | RPF10/U6TX/U3RTS — UART6 TX / GPIO |
| Pin 98 | RPF11/U6RX/U3CTS — UART6 RX / GPIO |
| Pin 99 | RPG0/U5TX/PMCS1 — UART5 TX / PMP CS1 |
| Pin 100 | RPG1/U5RX/PMCS2 — UART5 RX / PMP CS2 |
Typical Applications
PIC32MX270F512L-V/PF is suitable for 6 applications: Bluetooth Audio Sink/Source Headset, USB MIDI Controller, Capacitive-Touch User Interface Panel, Industrial USB Host Data Logger, USB Audio Class 1.0 Headset, Low-Cost 32-Bit General-Purpose Controller.
Bluetooth Audio Sink/Source Headset
The PIC32MX270F512L-V/PF targets Bluetooth audio sink and source headsets via the Microchip PIC32 Bluetooth Audio Development Kit (document 50002314A). Its two I2S ports handle external codec I2S data while USB OTG enumerates as a USB audio class 1.0 device, with 512 KB Flash supporting full Bluetooth-audio firmware and 64 KB SRAM holding USB + audio sample buffers.
Recommended
USB MIDI Controller
USB MIDI controllers using the PIC32MX270F512L-V/PF benefit from on-chip USB device and 81 GPIO for button-matrix scanning and rotary encoders. The 512 KB Flash stores USB-MIDI class descriptors plus user-lighting profiles; the 10-bit ADC reads potentiometers; the 5 timers drive PWM-based LED drivers. Pin-compatibility with PIC32MX170F512L-V/PF lets cost-down designs migrate easily.
Recommended
Capacitive-Touch User Interface Panel
The PIC32MX270F512L-V/PF integrates a CTMU (Charge Time Measurement Unit) for capacitive-touch detection without external analog ICs, supporting up to 30+ touch channels via the 81 GPIO matrix. The 100-pin TQFP exposes enough pins for both capacitive touch and a TFT/LCD parallel interface, while 64 KB SRAM buffers gesture-recognition state machines.
Recommended
Industrial USB Host Data Logger
The PIC32MX270F512L-V/PF supports USB host mode for USB mass-storage read/write in industrial data loggers, with 512 KB Flash holding FAT32 stacks and 64 KB SRAM acting as a sector cache. The RTCC timestamps cassette to file-headers. Industrial -40C to +105C extended grade (V suffix) handles factory-floor thermal stress.
Recommended
USB Audio Class 1.0 Headset
USB Audio Class 1.0 headsets use the PIC32MX270F512L-V/PF as the USB controller streaming 24-bit/s 48 kHz I2S to a DAC, leveraging the integrated USB full-speed with isochronous endpoint and two I2S/SSP ports. The 512 KB Flash fits USB-AudioClass 1.0 descriptors + DSP volume curves, while 64 KB SRAM holds audio sample buffers without stalls.
Recommended
Low-Cost 32-Bit General-Purpose Controller
General-purpose 32-bit controllers replace 8-bit AVR/PIC16 designs using the PIC32MX270F512L-V/PF, gaining multi-MHz MIPS data paths while keeping Microchip's MPLAB X toolchain. The 100-pin TQFP footprint offers 81 GPIO - ideal for retrofitting older PIC18 designs. The 10-bit ADC and 5 timers cover most mixed-signal embedded products in this role.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX270F512L-V/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX270F512L-50I/PF | PIC32MX270F512LT-V/PF | PIC32MX270F512L-I/PF | PIC32MX250F256L-V/PF | PIC32MX230F128L-V/PF |
|---|---|---|---|---|---|---|
| Package | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Program Flash | 512 KB | 512 KB - same | 512 KB - same | 512 KB - same | 256 KB (-50%) | 128 KB (-75%) |
| SRAM | 64 KB | 64 KB - same | 64 KB - same | 64 KB - same | 32 KB (-50%) | 16 KB (-75%) |
| Maximum Core Frequency | 40 MHz (V grade) | 50 MHz (-50 grade) | 40 MHz - same | 40 MHz - same | 40 MHz - same | 40 MHz - same |
| USB Support | USB 2.0 FS OTG | USB 2.0 FS OTG - same | USB 2.0 FS OTG - same | USB 2.0 FS OTG - same | USB 2.0 FS OTG - same | USB 2.0 FS OTG - same |
| Operating Temperature | -40C to +105C (V extended) | -40C to +85C (I industrial) | -40C to +105C - same | -40C to +85C (I industrial) | -40C to +105C - same | -40C to +105C - same |
| Pin Count (per unit) | 100 | 100 - same | 100 - same | 100 - same | 100 - same | 100 - same |
Key Differentiators
- USB OTG host mode on a 100-pin 40 MHz MCU (vs PIC32MX170F512L-V/PF)
- Two simultaneous I2S audio paths (vs PIC32MX250F256L-V/PF)
- CTMU on-chip capacitive-touch without external analog IC (vs Generic PIC32MX250F128B (no CTMU))
Design Notes
Decouple every VDD/VSS pair within 5 mm of the pin. Place one 0.1 uF ceramic plus one bulk capacitor (4.7-10 uF ceramic) per the four active pairs (pin 11, 17, 24, 34 etc). VUSB (pin 33) needs its own 0.1 uF + 4.7 uF per the USB transceiver supply. AVDD (pin 18) and AVSS (pin 19) require separate filtering for the 10-bit ADC noise target.
Estimated: At 40 MHz MIPS M4K core at 3.3 V the PIC32MX270F512L-V/PF draws roughly 30-45 mA active, dissipating 0.10-0.15 W. The 100-pin TQFP has theta_JA around 40-50 C/W per the Microchip thermal documentation, yielding a 5-8 C junction temperature rise at room ambient. For sealed enclosures above 80 C ambient, derate CPU duty cycle.
Use a 4-layer PCB with one solid ground plane for the 100-pin TQFP. Route the USB D+/D- pair (pins 30-31) as a 90-ohm differential with length matching within 150 mil. Keep the 12 MHz primary oscillator traces (pins 26-27) short and isolated from switching signals. Place the CTMU guarded ring around any capacitive-touch traces.
Do not leave the VBUS pin (pin 32) floating when USB is unused - tie to 3.3 V through 10 kohm. The RTCC requires a 32.768 kHz crystal on SOSC1/SOSC2 (pins 28-29). Brown-out Reset must be enabled in the DEVCFG configuration bits for reliable firmware boot. The CTMU needs a 1 nF 1% sample capacitor for required capacitive touch
Compliance Information
RoHS compliant per Microchip product page. AEC-Q100 not applicable (consumer/industrial grade). Halogen-free status not stated on product page - set unknown. Conflict-minerals compliance per Microchip policy.
