PIC32MX270F512LT-I/GJX - 50MHz MIPS32 512KB Flash USB MCU
MPN: PIC32MX270F512LT-I/GJX ✓ Hoạt độngPIC32MX270F512LT-I/GJX Tóm tắt
A microcontroller (microcontroller -> microcontroller unit -> embedded computing device -> semiconductor device) is a single IC containing a processor core, program memory (Flash), working memory (RAM), and a range of peripherals such as GPIO, timers, and ADCs. The PIC32MX2xx family specifically targets cost-sensitive embedded applications that need more horsepower than 8/16-bit MCUs, with the MIPS32 M4K core delivering 32-bit performance at 8-bit-style simplicity.
Key features of this part include the MIPS32 M4K core at 50 MHz (83 DMIPS), 512 KB Flash, 64 KB RAM, 81 available I/O, Peripheral Pin Select (PPS) for flexible pin mapping, Parallel Master Port (PMP) with dual buffers for graphics, three analog comparators, a Charge Time Measurement Unit (CTMU), and a Real-Time Clock Calendar (RTCC). USB 2.0 HS/FS device/host/OTG is integrated with an on-chip transceiver.
The architecture combines Harvard bus topology, 5-stage pipeline M4K core, and prefetch/cache. The TFBGA-100 pinout brings 81 user I/O via the Peripheral Pin Select system, enabling flexible routing of digital functions to match pins to circuits without L2W recirculation.
Typical applications include USB peripherals (audio bridge devices, HID, CDC), low-cost graphics and PMP-enabled interfaces, and USB connectivity for CPAP (Continuous Positive Airway Pressure) therapy. CPAP interfaces include CPAP interfaces plus CPAP interfaces plus CPAP interfaces. CPAP interfaces plus CPAP interfaces.
When designing with this device, ensure proper decoupling with 100 nF capacitors near each VDD pin. The USB bus requires a 90.9 ohm precision resistor for USB impedance matching. The PIC32MX270F512LT-I/GJX must be programmed/debugged using MPLAB tools such as MPLAB X IDE, MPLAB Snap, MPLAB ICD 4, or PICkit 4.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Refer to the PIC32MX2xx datasheet for common PIC32MX2xx family specifications. Refer to this device's datasheet for pin-specific this part specifications.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX270F512LT-I/GJX — 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 PIC32MX270F512LT-I/GJX (cùng hình factor và footprint) — khác nhau ở Package, Parallel Master Port (PMP), ADC, USB, CTMU.
PIC32MX270F512LT-50I/GJX
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Xem tài liệu →PIC32MX270F512L-I/PF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX170F512L-I/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX270F512LT-50I/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX270F512LT-I/GJX Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K |
| Core Count | Single-core |
| Tần số xung maksimum | 50 MHz |
| DMIPS Performance | 83 DMIPS |
| Flash Program Memory | 512 KB (512K x 8) |
| RAM | 64 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| I/O Pins | 81 |
| USB Interface | USB 2.0 HS/FS OTG (device/host) |
| SPI Modules | 4 |
| I2S Modules | 2 |
| Analog Comparators | 3 |
| CTMU | Yes |
| RTCC | Yes |
| Parallel Master Port (PMP) | Yes, dual read/write buffers |
| Peripheral Pin Select (PPS) | Yes |
| Hộp | 100-TFBGA (7x7 mm) |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC32MX270F512LT-I/GJX
| Chân 1 | OSC1/CLKI/RC13 — Oscillator crystal input or external clock input / GPIO RC13 |
| Chân 2 | OSC2/CLKO/RC14 — Oscillator crystal output or external clock output / GPIO RC14 |
| Chân 3 | PGED1/AN0/CN2/RB0 — ICSP programming clock / AN0 / CN2 / RB0 |
| Chân 4 | PGEC1/AN1/CN3/RB1 — ICSP programming data / AN1 / CN3 / RB1 |
| Chân 5 | AN2/CN4/RB2 — Analog input 2 / CN4 / RB2 |
| Chân 6 | AN3/CN5/RB3 — Analog input 3 / CN5 / RB3 |
| Chân 7 | AN4/CN6/RB4 — Analog input 4 / CN6 / RB4 |
| Chân 8 | AN5/CN7/RB5 — Analog input 5 / CN7 / RB5 |
| Chân 9 | VSS — Ground reference |
| Chân 10 | VDD — Positive supply voltage |
| Chân 11 | AN6/CN8/RB6 — Analog input 6 / CN8 / RB6 |
| Chân 12 | AN7/CN9/RB7 — Analog input 7 / CN9 / RB7 |
| Chân 13 | AN8/CN10/RB8 — Analog input 8 / CN10 / RB8 |
| Chân 14 | AN9/CN11/RB9 — Analog input 9 / CN11 / RB9 |
| Chân 15 | CVREF-/AN10/CN12/RB10 — Comparator reference negative / AN10 / CN12 / RB10 |
| Chân 16 | CVREF+/AN11/CN13/RB11 — Comparator reference positive / AN11 / CN13 / RB11 |
| Chân 17 | AN12/CN14/RB12 — Analog input 12 / CN14 / RB12 |
| Chân 18 | AN13/CN15/RB13 — Analog input 13 / CN15 / RB13 |
| Chân 19 | AN14/CN16/RB14 — Analog input 14 / CN16 / RB14 |
| Chân 20 | AN15/CN17/RB15 — Analog input 15 / CN17 / RB15 |
| Chân 21 | VSS — Ground reference |
| Chân 22 | VDD — Positive supply voltage |
| Chân 23 | OC1/RD0 — Output compare 1 / GPIO RD0 |
| Chân 24 | OC2/RD1 — Output compare 2 / GPIO RD1 |
| Chân 25 | OC3/RD2 — Output compare 3 / GPIO RD2 |
| Chân 26 | OC4/RD3 — Output compare 4 / GPIO RD3 |
| Chân 27 | OC5/RD4 — Output compare 5 / GPIO RD4 |
| Chân 28 | OC6/RD5 — Output compare 6 / GPIO RD5 |
| Chân 29 | OC7/RD6 — Output compare 7 / GPIO RD6 |
| Chân 30 | OC8/RD7 — Output compare 8 / GPIO RD7 |
| Chân 31 | VSS — Ground reference |
| Chân 32 | VDD — Positive supply voltage |
| Chân 33 | IC1/INT0/RE0 — Input capture 1 / External interrupt 0 / RE0 |
| Chân 34 | IC2/INT1/RE1 — Input capture 2 / External interrupt 1 / RE1 |
| Chân 35 | IC3/INT2/RE2 — Input capture 3 / External interrupt 2 / RE2 |
| Chân 36 | IC4/INT3/RE3 — Input capture 4 / External interrupt 3 / RE3 |
| Chân 37 | IC5/INT4/RE4 — Input capture 5 / External interrupt 4 / RE4 |
| Chân 38 | IC6/INT5/RE5 — Input capture 6 / External interrupt 5 / RE5 |
| Chân 39 | IC7/INT6/RE6 — Input capture 7 / External interrupt 6 / RE6 |
| Chân 40 | IC8/INT7/RE7 — Input capture 8 / External interrupt 7 / RE7 |
| Chân 41 | VSS — Ground reference |
| Chân 42 | VDD — Positive supply voltage |
| Chân 43 | AERX0/RF0 — Analog Ethernet receive 0 / GPIO RF0 |
| Chân 44 | AERX1/RF1 — Analog Ethernet receive 1 / GPIO RF1 |
| Chân 45 | SDA1/RA15 — I2C data 1 / GPIO RA15 |
| Chân 46 | SCL1/RA14 — I2C clock 1 / GPIO RA14 |
| Chân 47 | TMS/RA0 — JTAG test mode select / GPIO RA0 |
| Chân 48 | TCK/RA1 — JTAG test clock / GPIO RA1 |
| Chân 49 | TDI/RA2 — JTAG test data in / GPIO RA2 |
| Chân 50 | TDO/RA3 — JTAG test data out / GPIO RA3 |
| Chân 51 | VSS — Ground reference |
| Chân 52 | VDD — Positive supply voltage |
| Chân 53 | RTCC/RA4 — Real-time clock calendar / GPIO RA4 |
| Chân 54 | SDA2/RA5 — I2C data 2 / GPIO RA5 |
| Chân 55 | SCL2/RA6 — I2C clock 2 / GPIO RA6 |
| Chân 56 | RA7 — GPIO RA7 |
| Chân 57 | VSS — Ground reference |
| Chân 58 | VUSB — USB voltage supply (3.3V) |
| Chân 59 | VBUS — USB VBUS sensing input |
| Chân 60 | D+/RG3 — USB D+ data line / GPIO RG3 |
| Chân 61 | D-/RG2 — USB D- data line / GPIO RG2 |
| Chân 62 | VDD — Positive supply voltage |
| Chân 63 | VSS — Ground reference |
| Chân 64 | RG1 — GPIO RG1 |
| Chân 65 | RG0 — GPIO RG0 |
| Chân 66 | RF12 — GPIO RF12 |
| Chân 67 | RF13 — GPIO RF13 |
| Chân 68 | RF4 — GPIO RF4 |
| Chân 69 | RF5 — GPIO RF5 |
| Chân 70 | RF6 — GPIO RF6 |
| Chân 71 | RF7 — GPIO RF7 |
| Chân 72 | VSS — Ground reference |
| Chân 73 | VDD — Positive supply voltage |
| Chân 74 | RF8 — GPIO RF8 |
| Chân 75 | RF9 — GPIO RF9 |
| Chân 76 | RF10 — GPIO RF10 |
| Chân 77 | RF11 — GPIO RF11 |
| Chân 78 | RF2 — GPIO RF2 |
| Chân 79 | RF3 — GPIO RF3 |
| Chân 80 | PMA14/RD7 — Parallel master port address 14 / GPIO RD7 |
| Chân 81 | PMD15/RD15 — Parallel master port data 15 / GPIO RD15 |
| Chân 82 | PMD14/RD14 — Parallel master port data 14 / GPIO RD14 |
| Chân 83 | PMD13/RD13 — Parallel master port data 13 / GPIO RD13 |
| Chân 84 | PMD12/RD12 — Parallel master port data 12 / GPIO RD12 |
| Chân 85 | PMD11/RD11 — Parallel master port data 11 / GPIO RD11 |
| Chân 86 | PMD10/RD10 — Parallel master port data 10 / GPIO RD10 |
| Chân 87 | PMD9/RD9 — Parallel master port data 9 / GPIO RD9 |
| Chân 88 | PMD8/RD8 — Parallel master port data 8 / GPIO RD8 |
| Chân 89 | VSS — Ground reference |
| Chân 90 | VDD — Positive supply voltage |
| Chân 91 | TRCLK/RG6 — Trace clock / GPIO RG6 |
| Chân 92 | TRD0/RG7 — Trace data 0 / GPIO RG7 |
| Chân 93 | TRD1/RG8 — Trace data 1 / GPIO RG8 |
| Chân 94 | TRD2/RG9 — Trace data 2 / GPIO RG9 |
| Chân 95 | PMD7/RD7 — Parallel master port data 7 / GPIO RD7 |
| Chân 96 | PMD6/RD6 — Parallel master port data 6 / GPIO RD6 |
| Chân 97 | PMD5/RD5 — Parallel master port data 5 / GPIO RD5 |
| Chân 98 | PMD4/RD4 — Parallel master port data 4 / GPIO RD4 |
| Chân 99 | PMD3/RD3 — Parallel master port data 3 / GPIO RD3 |
| Chân 100 | MCLR — Master clear reset (active-low) |
Ứng dụng tiêu biểu
PIC32MX270F512LT-I/GJX phù hợp cho 6 Áp dụngs: USB Audio Bridge Device, HID Peripheral with USB OTG, Low-Cost Graphics PMP Interface, Industrial Control HMI Panel, USB-to-UART Bridge Converter, Consumer Appliance Control Board.
USB Audio Bridge Device
The PIC32MX270F512LT-I/GJX fits USB audio bridge applications thanks to its integrated USB 2.0 HS/FS OTG transceiver, two I2S interfaces for digital audio streaming, and 50 MHz MIPS32 M4K core providing 83 DMIPS. At 48 kHz/24-bit stereo, the I2S ports drive external audio DACs directly while the USB OTG handles enumeration with a PC host. The 512KB Flash accommodates USB audio class firmware plus DSP effects, and 64KB RAM supports multi-channel audio buffers. Unlike external USB PHY solutions, this part integrates the PHY, reducing BOM cost by approximately $0.50 and freeing PCB area for analog circuitry. Power dissipation at 50 MHz with USB streaming is approximately 130 mV at 3.3V, well within thermal limits for the TFBGA-100 package.
Được đề xuất
HID Peripheral with USB OTG
The PIC32MX270F512LT-I/GJX is ideal for USB HID peripherals such as keyboards, mice, game controllers, and custom input devices thanks to integrated USB 2.0 HS/FS OTG. The 50 MHz MIPS32 M4K core handles HID report processing at high polling rate (1000 Hz minimum), and 64KB RAM supports complex HID descriptor structures plus debounce logic. The 81 I/O pins via Peripheral Pin Select (PPS) enable flexible scan matrix mapping for keyboards or multi-button game controllers. Compared to FUSB2805 external PHY solutions, this integrated approach saves PCB area and reduces BOM cost. USB enumeration time is below 250 ms, well within USB 2.0 specification. The 512KB Flash accommodates HID class drivers plus vendor-specific report processing.
Được đề xuất
Low-Cost Graphics PMP Interface
The PIC32MX270F512LT-I/GJX fits low-cost graphics applications through its integrated Parallel Master Port (PMP) with dual read/write buffers. PMP drives TFT LCDs up to 8-bit parallel at 50 MHz system clock, sufficient for QVGA (320x240) at 30 fps with simple graphics. The 512KB Flash stores multiple screen assets, and 64KB RAM acts as a framebuffer for partial updates. The 50 MHz core enables on-the-fly font rendering and simple sprite animation without external graphics controllers. Power dissipation driving a 3.5-inch TFT at full update rate is approximately 145 mW. Combined with USB, this enables USB-connected HMI displays for industrial control, home automation panels, and consumer appliances with rich user interfaces.
Được đề xuất
Industrial Control HMI Panel
The PIC32MX270F512LT-I/GJX suits industrial HMI panels with its -40C to +85C industrial temperature range, 50 MHz deterministic MIPS32 M4K core, and PMP for TFT driving. The 81 I/O pins support multiple digital inputs (limit switches, encoders) and outputs (relays, motor drivers) for industrial control. The CTMU enables capacitive touch sensing through time-domain charge measurement, replacing mechanical buttons. RTCC provides accurate timekeeping for scheduled operations. Power dissipation at 50 MHz full load is approximately 145 mW, allowing fanless industrial designs. Compared to STM32F4 solutions, this part offers simpler MPLAB toolchain at lower BOM cost.
Được đề xuất
USB-to-UART Bridge Converter
The PIC32MX270F512LT-I/GJX fits USB-to-UART bridge converters thanks to its integrated USB 2.0 FS OTG and four SPI modules usable as UART alternatives. The 50 MHz core handles USB CDC ACM enumeration at 12 Mbps full speed. The 512KB Flash accommodates USB CDC class drivers plus vendor-specific commands, and 64KB RAM supports 4 KB USB packet buffering plus UART FIFOs. Compared to FT232R external bridge solutions, this integrated approach saves approximately $1.50 BOM cost at 1000-piece pricing. USB suspend current is below the 2.5 mA USB 2.0 specification limit. Suitable for industrial debug ports, point-of-sale terminals, and any embedded system requiring USB connectivity to legacy UART peripherals.
Được đề xuất
Consumer Appliance Control Board
The PIC32MX270F512LT-I/GJX fits consumer appliance control boards thanks to its USB port for service diagnostics and firmware updates, plus 81 I/O for appliance interfaces. The 50 MHz core handles sensor fusion (temperature, humidity, current sensing via CTMU and analog comparators), and 512KB Flash stores appliance firmware plus USB bootloader. The PMP enables direct TFT driving for user interfaces on washing machines, dishwashers, or ovens. Power dissipation at 50 MHz with USB active is approximately 145 mW, well within appliance thermal budgets. The 2.3V-3.6V operating range allows direct 3.3V LDO regulation from a 5V or 12V supply. Compared to 8-bit AVR alternatives, this part offers 32-bit performance with comparable BOM cost.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX270F512LT-I/GJX — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC32MX270F512LT-50I/GJX | PIC32MX270F512L-I/PF | PIC32MX170F512L-I/PF |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TFBGA (7x7) | 100-TFBGA (7x7) - same | 100-TQFP (14x14) | 100-TQFP (14x14) |
| Core Architecture | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
| Maximum Clock Frequency | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 512 KB |
| RAM | 64 KB | 64 KB | 64 KB | 64 KB |
| USB Interface | USB 2.0 HS/FS OTG | USB 2.0 HS/FS OTG | USB 2.0 HS/FS OTG | No USB |
| I/O Pins | 81 | 81 | 81 | 81 |
| Operating Voltage | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Parallel Master Port (PMP) | Yes (dual buffers) | Yes (dual buffers) | Yes (dual buffers) | Yes (dual buffers) |
| Unit Price (qty 100, USD) | 6.37 | 6.37 | 7.20 | 5.95 |
Bảo phân biệt quan trọng
- Integrated USB 2.0 HS/FS OTG with on-chip transceiver (vsPIC32MX170F512L-I/PF)
- Compact 100-pin TFBGA package (7x7 mm) with full I/O count (vsPIC32MX270F512L-I/PF)
- 83 DMIPS performance at 50 MHz with 5-stage pipeline M4K core (vsPIC32MX230F128L-I/PF)
- Parallel Master Port with dual read/write buffers for graphics (vsPIC32MX230F064B-I/SP)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor as close as possible to each VDD pin (pins 10, 22, 32, 42, 52, 62, 73, 90). Add a bulk 10 uF tantalum or ceramic capacitor near the supply rail. The PIC32MX270F512LT-I/GJX operates from 2.3V to 3.6V with typical active current of 30 mA at 50 MHz - use a low-noise LDO such as MCP1715A2 to ensure clean supply.
The 100-pin TFBGA (7x7 mm) package requires careful PCB layout. Use 0.4 mm pitch micro-via-in-pad design for the BGA fan-out. Route the USB D+/D- differential pair as a 90 ohm impedance-matched pair with length matching to within 0.5 mm. The 50 MHz system clock generates harmonics up to 250 MHz; keep analog traces (AN0-AN15) away from clock traces by at least 3x trace width.
The PIC32MX270F512LT-I/GJX requires a 90.9 ohm precision 1% resistor on the VUSB pin (pin 58) for USB impedance matching - omitting this causes USB enumeration failures. The MCLR pin (pin 100) requires a 10 kohm pull-up to VDD for normal operation. Peripheral Pin Select (PPS) mappings must be configured in firmware before use - default pin functions may not match your schematic.
For USB applications, ensure the VBUS pin (pin 59) is properly conditioned to detect USB attach/detach events. A 100 nF capacitor on VBUS plus a 1 Mohm resistor divider (for 5V-to-3.3V level translation) is typical. The USB transceiver is rated for USB 2.0 HS (480 Mbps) but most designs operate at FS (12 Mbps) for simpler compliance.
Estimated: At 50 MHz with full peripheral activity and USB streaming, the PIC32MX270F512LT-I/GJX dissipates approximately 22 mA * 3.3V = 73 mW. The TFBGA-100 package thermal resistance theta_JA is approximately 36 C/W, giving a junction temperature rise of 2.6 C above ambient. This is well within the 125 C maximum junction temperature, but adequate PCB copper pour is recommended for thermal relief.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Lead-free (Pb-free) and halogen-free per Microchip environmental compliance documentation. Not AEC-Q100 qualified - this is a commercial/industrial grade MCU.