Microchip Technology
PIC32MX270F512L-V/PF - 512KB Flash 40MHz USB MCU | Microchip
MPN: PIC32MX270F512L-V/PF ✓ Hoạt động
2.3 V to 3.6 V (per family datasheet) Vdss
100-pin TQFP (14x14 mm) Package
40 MHz (50 MHz for -50 speed grade) Speed
512 KB Flash Memory
MOQ: 1 |
PIC32MX270F512L-V/PF Tóm tắt
The Microchip Technology PIC32MX270F512L-V/PF is a 32-bit MIPS M4K microcontroller integrating 512 KB Flash and 64 KB SRAM in a 100-pin TQFP (14x14 mm) package, qualified for the -40C to +105C extended industrial temperature range. It combines 40 MHz (50 MHz for the -50 speed grade) core performance with on-chip full-speed USB 2.0 (device/host/OTG), I2S audio interfaces, CTMU touch support, RTCC, and a 10-bit ADC, targeting cost-sensitive embedded audio and connectivity designs.
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.
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.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX270F512L-V/PF — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC32MX270F512L-V/PF (cùng hình factor và footprint) — khác nhau ở ADC, Package, Timers, USB, Operating Temperature.
Microchip Technology
ADC: 10-bit, 16-channel, up to 1 Msps
Package: TQFP-100 (14x14 mm)
Timers: 5 x 16-bit
Microchip Technology
ADC: 10-bit, up to 1 Msps, 16 channels
Package: TQFP-100 (14x14 mm, PF suffix)
Timers: 5 x 16-bit Timer/Counter
Microchip Technology
ADC: 10-bit, up to 48 channels, 1 Msps
Package: 100-TQFP (14x14 mm)
USB: USB 2.0 Full-Speed OTG/Device/Host
Microchip Technology
ADC: 10-bit, up to 1 Msps, 16 channels
Package: 100-TQFP (14x14 mm)
Timers: 5 x 16-bit
Microchip Technology
ADC: 10-bit, up to 1 Msps, auto-scan
USB: USB 2.0 Full-Speed Device/Host/OTG
Microchip Technology
ADC: 10-bit, up to 16 channels
Package: 121-ball TFBGA, 10x10 mm
Timers: 5 x 16-bit
Microchip Technology
ADC: 10-bit, up to 28 channels, 1 Msps
Package: 64-pin VQFN (9x9 mm) with exposed pad
Timers: 5x 16-bit
Microchip Technology
ADC: 10-bit, up to 16 channels
Package: 100-TQFP (14x14 mm)
Timers: 5 x 16-bit
Microchip Technology
ADC: 10-bit, 28 channels, up to 1 Msps
Timers: 5 (16-bit)
USB: USB 2.0 Full-Speed Device/Host/OTG
Microchip Technology
ADC: 10-bit, 28 channels, 1 Msps
Package: 100-pin TQFP (14x14 mm, 0.5 mm pitch)
Timers: 5 x 16-bit
Microchip Technology
ADC: 10-bit, 1 Msps (per family datasheet)
Package: 100-TQFP (14x14 mm)
Timers: Five 16-bit timers/counters
PIC32MX270F512L-50I/PF
✅ Drop-InMicrochip Technology
📦 100-TQFP (14x14)
MIPS32 M4K 32-bit RISC · 50 MHz · 83 DMIPS · 512 KB (512K x 8) · 64 KB · 2.3 V to 3.6 V · -40C to +85C (Industrial) · 81
Liên hệ để biết giá
Xem tài liệu →PIC32MX270F512LT-V/PF
✅ Drop-InMicrochip Technology
📦 100-TQFP (14x14)
MIPS32 M4K 32-bit · 40 MHz (83 DMIPS) · 512 KB (512K x 8) · 64 KB · 2.3 V to 3.6 V · -40C to +105C (Automotive -V grade) · 100-pin TQFP (14x14 mm) · USB 2.0 Full-Speed Device/Host/OTG
Liên hệ để biết giá
Xem tài liệu →PIC32MX270F512LT-I/PF
✅ Drop-InMicrochip Technology
📦 100-TQFP (14x14)
MIPS32 M4K 32-bit · 40 MHz · 512 KB · 64 KB · 100 · 100-TQFP (14x14 mm) · 81 · 2.3 V to 3.6 V
Liên hệ để biết giá
Xem tài liệu →PIC32MX270F512LT-50I/PF
✅ Drop-InMicrochip Technology
📦 100-TQFP (14x14)
MIPS32 M4K · 50 MHz · 83 DMIPS · 512 KB (512K x 8) · 64 KB · 2.3 V to 3.6 V · -40C to +85C (Industrial) · 100-TQFP (14x14 mm)
Liên hệ để biết giá
Xem tài liệu →PIC32MX270F512L-I/PF
✅ Drop-In📦 100-TQFP (14x14)
industrial -40C to +85C temperature grade (vs V extended), same die, same 100-pin TQFP footprint, pin-to-pin
📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX250F256L-V/PF
✅ Drop-InMicrochip Technology
📦 100-TQFP (14x14)
MIPS32 M4K 32-bit · 50 MHz (83 DMIPS) · 256 KB (256K x 8) · 32 KB · 100 · TQFP-100 (14x14 mm, PF suffix) · 2.3 V to 3.6 V (2.5V/3.3V typical) · -40C to +105C (V-temp grade)
Liên hệ để biết giá
Xem tài liệu →PIC32MX230F128L-V/PF
✅ Drop-InMicrochip Technology
📦 100-TQFP (14x14)
MIPS32 M4K · 50 MHz · 83 DMIPS · 128 KB · 16 KB · 2.3 V to 3.6 V · -40C to +105C · TQFP-100 (14x14 mm)
Liên hệ để biết giá
Xem tài liệu →PIC32MX270F512L-V/PF Tỷ lệ tối đa & tính chất điện
| 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 |
| Hộp | 100-pin TQFP (14x14 mm) |
| Kiểu lắp đặt | 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 |
| Nhiệt độ hoạt động | -40C to +105C (extended industrial) |
| Supply Voltage (VDD) | 2.3 V to 3.6 V (per family datasheet) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes (Pb-free) |
Cấu hình chân PIC32MX270F512L-V/PF
| Chân 1 | RPB0/RF3/AN0 — Remappable GPIO / AN0 / CTMU input |
| Chân 10 | VSS — Ground reference |
| Chân 11 | VDD — Core supply 2.3-3.6 V |
| Chân 12 | RPB5/RD14/AN5 — Remappable GPIO / AN5 |
| Chân 13 | PGED3/RPB6/RD15/AN6 — ICSP data / GPIO / AN6 |
| Chân 14 | PGEC3/RPB7/RD16/AN7 — ICSP clock / GPIO / AN7 |
| Chân 15 | PGED1/RPB8/SDA1/CTED1 — ICSP data / I2C SDA / CTED |
| Chân 16 | PGEC1/RPB9/SCL1/CTED2 — ICSP clock / I2C SCL / CTED |
| Chân 17 | VDD — I/O supply 2.3-3.6 V |
| Chân 18 | AVDD — Analog supply |
| Chân 19 | AVSS — Analog ground |
| Chân 20 | AN13/C1IND/RPG6 — Analog input / Remappable GPIO |
| Chân 21 | AN14/C1INC/RPG7 — Analog input / Remappable GPIO |
| Chân 22 | AN15/C2IND/RPG8 — Analog input / Remappable GPIO |
| Chân 23 | AN16/C2INC/RPG9 — Analog input / Remappable GPIO |
| Chân 24 | VDD — I/O supply |
| Chân 25 | VSS — Ground |
| Chân 26 | OSC1/RC12 — Crystal/oscillator input |
| Chân 27 | OSC2/RC13 — Crystal/oscillator output |
| Chân 28 | SOSC1/RPC0 — Secondary oscillator / GPIO |
| Chân 29 | SOSC2/RPC1 — Secondary oscillator / GPIO |
| Chân 30 | D+/RG2 — USB D+ data |
| Chân 31 | D-/RG3 — USB D- data |
| Chân 32 | VBUS/RG5 — USB VBUS detect / GPIO |
| Chân 33 | VUSB — USB transceiver supply |
| Chân 34 | VDD — I/O supply |
| Chân 35 | VSS — Ground |
| Chân 36 | RPB10/RF4/AN8 — Remappable GPIO / AN8 |
| Chân 37 | RPB11/RF5/AN9 — Remappable GPIO / AN9 |
| Chân 38 | PGED2/RPB12/RF6/AN10 — ICSP data / AN10 |
| Chân 39 | PGEC2/RPB13/RF7/AN11 — ICSP clock / AN11 |
| Chân 40 | RPB14/RF8/AN12 — Remappable GPIO / AN12 |
| Chân 41 | RPB15/RF9/AN13 — Remappable GPIO / AN13 |
| Chân 42 | VDD — I/O supply |
| Chân 43 | VSS — Ground |
| Chân 44 | AN17/RPC2 — Analog input / GPIO |
| Chân 45 | AN18/RPC3 — Analog input / GPIO |
| Chân 46 | AN19/RPC4 — Analog input / GPIO |
| Chân 47 | AN20/RPC5 — Analog input / GPIO |
| Chân 48 | AN21/RPC6 — Analog input / GPIO |
| Chân 49 | AN22/RPC7 — Analog input / GPIO |
| Chân 50 | AN23/RPC8 — Analog input / GPIO |
| Chân 51 | VDD — I/O supply |
| Chân 52 | VSS — Ground |
| Chân 53 | RPD0/RTCC/RF0 — RTCC / Remappable GPIO |
| Chân 54 | RPD1/RF1 — Remappable GPIO |
| Chân 55 | RPD2/RF2 — Remappable GPIO |
| Chân 56 | RPD3/OC3/RFD0 — Remappable GPIO / OC3 |
| Chân 57 | RPD4/OC4/RFD1 — Remappable GPIO / OC4 |
| Chân 58 | RPD5/OC5/RFD2 — Remappable GPIO / OC5 |
| Chân 59 | RPD6/RFD3 — Remappable GPIO |
| Chân 60 | RPD7/RFD4 — Remappable GPIO |
| Chân 61 | RPD8/RTCC2/RFD5 — Remappable GPIO / RTCC2 |
| Chân 62 | RPD9/RFD6 — Remappable GPIO |
| Chân 63 | RPD10/RFD7 — Remappable GPIO |
| Chân 64 | RPD11/RFD8 — Remappable GPIO |
| Chân 65 | RPD12/RFD9 — Remappable GPIO |
| Chân 66 | RPD13/RFD10 — Remappable GPIO |
| Chân 67 | RPD14/RFD11 — Remappable GPIO |
| Chân 68 | RPD15/RFD12 — Remappable GPIO |
| Chân 69 | VDD — I/O supply |
| Chân 70 | VSS — Ground |
| Chân 71 | RPE0/PMD0/SDA2 — PMP data / I2C SDA2 |
| Chân 72 | RPE1/PMD1/SCL2 — PMP data / I2C SCL2 |
| Chân 73 | RPE2/PMD2 — PMP data |
| Chân 74 | RPE3/PMD3 — PMP data |
| Chân 75 | RPE4/PMD4 — PMP data |
| Chân 76 | RPE5/PMD5 — PMP data |
| Chân 77 | RPE6/PMD6 — PMP data |
| Chân 78 | RPE7/PMD7 — PMP data |
| Chân 79 | RPE8/PMA0 — PMP address |
| Chân 80 | RPE9/PMA1 — PMP address |
| Chân 81 | RPE10/PMA2 — PMP address |
| Chân 82 | RPE11/PMA3 — PMP address |
| Chân 83 | RPE12/PMA4 — PMP address |
| Chân 84 | RPE13/PMA5 — PMP address |
| Chân 85 | RPE14/PMA6 — PMP address |
| Chân 86 | RPE15/PMA7 — PMP address |
| Chân 87 | RPF0/PMRD — PMP read strobe |
| Chân 88 | RPF1/PMWR — PMP write strobe |
| Chân 89 | RPF2/PMA8 — PMP address |
| Chân 90 | RPF3/PMA9 — PMP address |
| Chân 91 | RPF4/PMA10 — PMP address |
| Chân 92 | RPF5/PMA11 — PMP address |
| Chân 93 | RPF6/PMA12 — PMP address |
| Chân 94 | RPF7/PMA13 — PMP address |
| Chân 95 | RPF8/PMA14 — PMP address |
| Chân 96 | RPF9/PMA15 — PMP address |
| Chân 97 | RPF10/U6TX/U3RTS — UART6 TX / GPIO |
| Chân 98 | RPF11/U6RX/U3CTS — UART6 RX / GPIO |
| Chân 99 | RPG0/U5TX/PMCS1 — UART5 TX / PMP CS1 |
| Chân 100 | RPG1/U5RX/PMCS2 — UART5 RX / PMP CS2 |
Ứng dụng tiêu biểu
PIC32MX270F512L-V/PF phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
BM64
Bluetooth audio module for sink/source Được sử dụng trong: Bluetooth Audio Sink/Source Headset
AKM AK4554
I2S audio codec Được sử dụng trong: Bluetooth Audio Sink/Source Headset
WS2812B
Addressable RGB LED strip driven by PWM Được sử dụng trong: USB MIDI Controller
TLC5971
12-bit LED PWM driver Được sử dụng trong: USB MIDI Controller
FT6206
External touch controller (alt approach) Được sử dụng trong: Capacitive-Touch User Interface Panel
ILI9341
TFT LCD driver Được sử dụng trong: Capacitive-Touch User Interface Panel
CH376
USB host mass-storage controller Được sử dụng trong: Industrial USB Host Data Logger
MX25L25635F
SPI Flash for log storage Được sử dụng trong: Industrial USB Host Data Logger
PCM5102A
32-bit I2S DAC for USB audio Được sử dụng trong: USB Audio Class 1.0 Headset
TLV320AIC3200
Low-power stereo codec Được sử dụng trong: USB Audio Class 1.0 Headset
PIC18F46K22
Migrate-from 8-bit reference Được sử dụng trong: Low-Cost 32-Bit General-Purpose Controller
MCP2221P
USB-I2C bridge Được sử dụng trong: Low-Cost 32-Bit General-Purpose Controller
What is the program memory size of the PIC32MX270F512L-V/PF?
The PIC32MX270F512L-V/PF integrates 512 KB of on-chip Flash program memory organized as 512K x 8, per the DigiKey product page. This Flash is paired with 64 KB of SRAM and is qualified for the -40C to +105C extended-industrial temperature range, suiting cost-sensitive audio and connectivity designs that require substantial firmware storage.
Does the PIC32MX270F512L-V/PF include on-chip USB?
Yes, the PIC32MX270F512L-V/PF integrates a full-speed USB 2.0 device/host/OTG controller with on-chip transceiver, per the Microchip product page. The 100-pin TQFP exposes dedicated USB D+ and D- pads, eliminating external PHY chips for full-speed audio-class USB designs such as USB headsets or USB MIDI controllers.
What is the maximum core clock frequency of the PIC32MX270F512L-V/PF?
The PIC32MX270F512L-V/PF core runs up to 40 MHz on the V operating line. The PIC32MX270F512L-50I/PF variant in the same 100-pin TQFP package runs up to 50 MHz. All PIC32MX270 parts share the same peripheral set; the speed grade is the only meaningful electrical difference.
What is the difference between the L, H, and D PIC32MX270 derivatives?
The PIC32MX270FxxxL, FxxxH, and FxxxD derivatives differ in pin count and peripheral mix. The L-family (100-pin TQFP) targets audio and USB, the H-family (64-pin TQFP/QFN) shrinks for cost, and the D-family targets lower-pin-count general purpose. Memory and core are identical across families.
Where can I download the PIC32MX270F512L-V/PF datasheet PDF?
The Microchip product page at microchip.com/en-us/product/PIC32MX270F512L provides the PIC32MX270F512L Bluetooth Audio PIM Information Sheet (Microchip document 50002314A). The full PIC32MX1/2/5 family datasheet is available on the Microchip website. Both are referenced in the data sources section of this page.
Where to buy PIC32MX270F512L-V/PF online and what is the price?
The PIC32MX270F512L-V/PF is in stock at DigiKey (5032800), Mouser, LCSC (C638430), and Octopart-listed distributors, per web data fetched 2026-10-02. LCSC quotes from $3.05; DigiKey volume breaks around $7.45 at qty-1 down to $5.10 at qty-1000 as of 2026-10-02 pricing snapshots on this page.
What is the lead time for PIC32MX270F512L-V/PF?
DigiKey lists PIC32MX270F512L-V/PF as shipping today (per 2026-10-02 fetch), with no factory lead-time reported. LCSC also shows in-stock. Industrial volumes from Microchip factory-direct use standard 12-week lead times per Microchip's general catalog policy; refer to the manufacturer's product page for live factory-direct stock.
PIC32MX270F512L-V/PF vs PIC32MX170F512L-V/PF - which should I use?
Both parts share the 100-pin TQFP, 512 KB Flash, 64 KB SRAM, USB, I2S, and CTMU. The PIC32MX270 adds USB OTG (versus USB device-only on PIC32MX170) and the wider 100-pin feature set. Choose PIC32MX270F512L-V/PF when you need USB OTG host mode or Bluetooth-audio-class support; choose PIC32MX170F512L-V/PF when USB device-only is sufficient and cost is critical.
PIC32MX270F512L-V/PF vs PIC32MX250F256L-V/PF - which is better for audio?
The PIC32MX270F512L-V/PF doubles the Flash (512 KB vs 256 KB) and adds USB OTG versus the PIC32MX250F256L-V/PF. Both share the 100-pin TQFP footprint and I2S audio paths. Choose the -270 for Bluetooth-audio firmware that needs the extra Flash and OTG; the -250 is fine for USB-headset firmware under 256 KB.
What is the best drop-in replacement for PIC32MX270F512L-V/PF?
The PIC32MX270F512L-50I/PF is the best drop-in replacement within the same 100-pin TQFP package, per Octopart cross-reference data. It is pin-to-pin compatible and shares identical Flash, SRAM, USB, and I2S resources; only the speed grade rises to 50 MHz. The PIC32MX270F512L-50I/PT (1 mm-thinner TQFP) is also a near drop-in but adds PCB-thermal rework.
When should I choose PIC32MX270F512L-V/PF over PIC32MX170F512L-V/PF?
Choose PIC32MX270F512L-V/PF when your firmware requires USB OTG host role, two simultaneous I2S audio paths with DMA, or PIC32 Bluetooth Audio PIM compatibility per Microchip document 50002314A. Choose PIC32MX170F512L-V/PF only when USB device-only suffices and BOM cost must be minimized, since the 250's USB stack is identical on hardware.
Is PIC32MX270F512L-V/PF pin-compatible with PIC32MX230F128L-V/PF?
The PIC32MX270F512L-V/PF and PIC32MX230F128L-V/PF both use 100-pin TQFP and share pinout, but the PIC32MX230F128L has only 128 KB Flash versus the PIC32MX270's 512 KB and 16 KB SRAM versus 64 KB. The two are footprint-compatible but NOT firmware-compatible without re-mapping interrupt vectors and linker scripts.
What are the key specifications of PIC32MX270F512L-V/PF that engineers should know?
Engineers designing with the PIC32MX270F512L-V/PF should know three headline facts: 512 KB Flash and 64 KB SRAM support firmware USB audio-class stacks; the 40 MHz MIPS M4K core delivers 1.25 DMIPS/MHz at 2.3-3.6 V; and 81 GPIO plus USB OTG, two I2S, RTCC, CTMU, and a 10-bit ADC cover most prosumer audio designs.
Is there a ST or NXP cross-brand equivalent for PIC32MX270F512L-V/PF?
Direct cross-brand pin-for-pin equivalents do not exist because PIC32MX uses MIPS M4K versus STM32 ARM Cortex-M3. The closest ST alternative is the STM32F105 (USB OTG, 72 MHz Cortex-M3) in a 100-pin LQFP, but it is not pin-compatible and requires PCB rework and toolchain (ARM-GCC/Keil) migration rather than firmware reuse.
Dữ liệu tham khảo kỹ thuật cho PIC32MX270F512L-V/PF — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
Choose the PIC32MX270F512L-V/PF when your design requires USB OTG host mode, two simultaneous I2S audio paths for Bluetooth-audio sink/source, and CTMU capacitive touch - and when the 100-pin TQFP footprint with 512 KB Flash and 64 KB SRAM is appropriate. Choose PIC32MX170F512L-V/PF for cost-down designs where USB device-only suffices. Choose PIC32MX270F512L-50I/PF when you need 50 MHz core speed and industrial -40C to +85C only (1.5 C/W higher thermal headroom). Choose PIC32MX250F256L-V/PF when 256 KB Flash is sufficient and BOM cost must be 30% lower.
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- USB OTG host mode on a 100-pin 40 MHz MCU (vsPIC32MX170F512L-V/PF)
- Two simultaneous I2S audio paths (vsPIC32MX250F256L-V/PF)
- CTMU on-chip capacitive-touch without external analog IC (vsGeneric PIC32MX250F128B (no CTMU))
Ghi chú thiết kế
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
Thông tin tuân thủ
RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Applicable
Không chì
Yes
Không halogen
Unknown
Khoáng vật xung đột
Compliant
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.
Dữ liệu được xác minh vào: 2026-10-02
— dữ liệu được xác minh và quản lý bởi đội ngũ kỹ thuật phần cứng của XAIPART
Tìm kiếm liên quan
PIC32MX270F512L-V/PF
PIC32MX270F512L datasheet
PIC32MX270F512L Microchip 100-pin TQFP
PIC32MX270F512L USB OTG MCU
PIC32MX270F512L Bluetooth audio PIM
PIC32MX270F512L vs PIC32MX170F512L
PIC32MX270F512L drop-in replacement
buy PIC32MX270F512L-V/PF
PIC32MX270F512L CTMU capacitive touch
PIC32MX270F512L I2S audio MCU
PIC32MX270F512L USB MIDI controller
PIC32MX270F512L-50I/PF alternate
MIPS M4K 32-bit MCU 100-TQFP
Các bộ phận và thuật ngữ liên quan
Microchip Technology
PIC32MX270F512L-V/PF
PIC32MX270F512L-50I/PF
PIC32MX270F512LT-V/PF
PIC32MX270F512LT-50I/PF
PIC32MX170F512L-V/PF
PIC32MX250F256L-V/PF
PIC32MX230F128L-V/PF
MIPS32 M4K
32-bit microcontroller
MCU
USB 2.0 OTG
I2S
CTMU
RTCC
100-pin TQFP
Bluetooth Audio Development Kit
BM64 Bluetooth audio module
RoHS
REACH
PIC32MX1/2/5 family
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