PIC32MX270F512LT-I/GJX - 50MHz MIPS32 512KB Flash USB MCU
MPN： PIC32MX270F512LT-I/GJX ✓ 啟用中PIC32MX270F512LT-I/GJX 概覽
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.
直接替換替代品，適用於 PIC32MX270F512LT-I/GJX — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC32MX270F512LT-I/GJX （相同外形與佔位） — 差異在於 Package, Parallel Master Port (PMP), ADC, USB, CTMU.
PIC32MX270F512LT-50I/GJX
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX270F512L-I/PF
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX170F512L-I/PF
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX270F512LT-50I/PF
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX270F512LT-I/GJX 最大額定值與電氣特性
| Core Architecture | MIPS32 M4K |
| Core Count | Single-core |
| 最大時脈頻率 | 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 |
| 封裝 | 100-TFBGA (7x7 mm) |
| 工作溫度範圍 | -40 C to +85 C (industrial) |
| 安裝類型 | Surface Mount |
| MSL 等級 | 3 |
| RoHS 狀態 | Compliant |
PIC32MX270F512LT-I/GJX 腳位配置
| 腳位 1 | OSC1/CLKI/RC13 — Oscillator crystal input or external clock input / GPIO RC13 |
| 腳位 2 | OSC2/CLKO/RC14 — Oscillator crystal output or external clock output / GPIO RC14 |
| 腳位 3 | PGED1/AN0/CN2/RB0 — ICSP programming clock / AN0 / CN2 / RB0 |
| 腳位 4 | PGEC1/AN1/CN3/RB1 — ICSP programming data / AN1 / CN3 / RB1 |
| 腳位 5 | AN2/CN4/RB2 — Analog input 2 / CN4 / RB2 |
| 腳位 6 | AN3/CN5/RB3 — Analog input 3 / CN5 / RB3 |
| 腳位 7 | AN4/CN6/RB4 — Analog input 4 / CN6 / RB4 |
| 腳位 8 | AN5/CN7/RB5 — Analog input 5 / CN7 / RB5 |
| 腳位 9 | VSS — Ground reference |
| 腳位 10 | VDD — Positive supply voltage |
| 腳位 11 | AN6/CN8/RB6 — Analog input 6 / CN8 / RB6 |
| 腳位 12 | AN7/CN9/RB7 — Analog input 7 / CN9 / RB7 |
| 腳位 13 | AN8/CN10/RB8 — Analog input 8 / CN10 / RB8 |
| 腳位 14 | AN9/CN11/RB9 — Analog input 9 / CN11 / RB9 |
| 腳位 15 | CVREF-/AN10/CN12/RB10 — Comparator reference negative / AN10 / CN12 / RB10 |
| 腳位 16 | CVREF+/AN11/CN13/RB11 — Comparator reference positive / AN11 / CN13 / RB11 |
| 腳位 17 | AN12/CN14/RB12 — Analog input 12 / CN14 / RB12 |
| 腳位 18 | AN13/CN15/RB13 — Analog input 13 / CN15 / RB13 |
| 腳位 19 | AN14/CN16/RB14 — Analog input 14 / CN16 / RB14 |
| 腳位 20 | AN15/CN17/RB15 — Analog input 15 / CN17 / RB15 |
| 腳位 21 | VSS — Ground reference |
| 腳位 22 | VDD — Positive supply voltage |
| 腳位 23 | OC1/RD0 — Output compare 1 / GPIO RD0 |
| 腳位 24 | OC2/RD1 — Output compare 2 / GPIO RD1 |
| 腳位 25 | OC3/RD2 — Output compare 3 / GPIO RD2 |
| 腳位 26 | OC4/RD3 — Output compare 4 / GPIO RD3 |
| 腳位 27 | OC5/RD4 — Output compare 5 / GPIO RD4 |
| 腳位 28 | OC6/RD5 — Output compare 6 / GPIO RD5 |
| 腳位 29 | OC7/RD6 — Output compare 7 / GPIO RD6 |
| 腳位 30 | OC8/RD7 — Output compare 8 / GPIO RD7 |
| 腳位 31 | VSS — Ground reference |
| 腳位 32 | VDD — Positive supply voltage |
| 腳位 33 | IC1/INT0/RE0 — Input capture 1 / External interrupt 0 / RE0 |
| 腳位 34 | IC2/INT1/RE1 — Input capture 2 / External interrupt 1 / RE1 |
| 腳位 35 | IC3/INT2/RE2 — Input capture 3 / External interrupt 2 / RE2 |
| 腳位 36 | IC4/INT3/RE3 — Input capture 4 / External interrupt 3 / RE3 |
| 腳位 37 | IC5/INT4/RE4 — Input capture 5 / External interrupt 4 / RE4 |
| 腳位 38 | IC6/INT5/RE5 — Input capture 6 / External interrupt 5 / RE5 |
| 腳位 39 | IC7/INT6/RE6 — Input capture 7 / External interrupt 6 / RE6 |
| 腳位 40 | IC8/INT7/RE7 — Input capture 8 / External interrupt 7 / RE7 |
| 腳位 41 | VSS — Ground reference |
| 腳位 42 | VDD — Positive supply voltage |
| 腳位 43 | AERX0/RF0 — Analog Ethernet receive 0 / GPIO RF0 |
| 腳位 44 | AERX1/RF1 — Analog Ethernet receive 1 / GPIO RF1 |
| 腳位 45 | SDA1/RA15 — I2C data 1 / GPIO RA15 |
| 腳位 46 | SCL1/RA14 — I2C clock 1 / GPIO RA14 |
| 腳位 47 | TMS/RA0 — JTAG test mode select / GPIO RA0 |
| 腳位 48 | TCK/RA1 — JTAG test clock / GPIO RA1 |
| 腳位 49 | TDI/RA2 — JTAG test data in / GPIO RA2 |
| 腳位 50 | TDO/RA3 — JTAG test data out / GPIO RA3 |
| 腳位 51 | VSS — Ground reference |
| 腳位 52 | VDD — Positive supply voltage |
| 腳位 53 | RTCC/RA4 — Real-time clock calendar / GPIO RA4 |
| 腳位 54 | SDA2/RA5 — I2C data 2 / GPIO RA5 |
| 腳位 55 | SCL2/RA6 — I2C clock 2 / GPIO RA6 |
| 腳位 56 | RA7 — GPIO RA7 |
| 腳位 57 | VSS — Ground reference |
| 腳位 58 | VUSB — USB voltage supply (3.3V) |
| 腳位 59 | VBUS — USB VBUS sensing input |
| 腳位 60 | D+/RG3 — USB D+ data line / GPIO RG3 |
| 腳位 61 | D-/RG2 — USB D- data line / GPIO RG2 |
| 腳位 62 | VDD — Positive supply voltage |
| 腳位 63 | VSS — Ground reference |
| 腳位 64 | RG1 — GPIO RG1 |
| 腳位 65 | RG0 — GPIO RG0 |
| 腳位 66 | RF12 — GPIO RF12 |
| 腳位 67 | RF13 — GPIO RF13 |
| 腳位 68 | RF4 — GPIO RF4 |
| 腳位 69 | RF5 — GPIO RF5 |
| 腳位 70 | RF6 — GPIO RF6 |
| 腳位 71 | RF7 — GPIO RF7 |
| 腳位 72 | VSS — Ground reference |
| 腳位 73 | VDD — Positive supply voltage |
| 腳位 74 | RF8 — GPIO RF8 |
| 腳位 75 | RF9 — GPIO RF9 |
| 腳位 76 | RF10 — GPIO RF10 |
| 腳位 77 | RF11 — GPIO RF11 |
| 腳位 78 | RF2 — GPIO RF2 |
| 腳位 79 | RF3 — GPIO RF3 |
| 腳位 80 | PMA14/RD7 — Parallel master port address 14 / GPIO RD7 |
| 腳位 81 | PMD15/RD15 — Parallel master port data 15 / GPIO RD15 |
| 腳位 82 | PMD14/RD14 — Parallel master port data 14 / GPIO RD14 |
| 腳位 83 | PMD13/RD13 — Parallel master port data 13 / GPIO RD13 |
| 腳位 84 | PMD12/RD12 — Parallel master port data 12 / GPIO RD12 |
| 腳位 85 | PMD11/RD11 — Parallel master port data 11 / GPIO RD11 |
| 腳位 86 | PMD10/RD10 — Parallel master port data 10 / GPIO RD10 |
| 腳位 87 | PMD9/RD9 — Parallel master port data 9 / GPIO RD9 |
| 腳位 88 | PMD8/RD8 — Parallel master port data 8 / GPIO RD8 |
| 腳位 89 | VSS — Ground reference |
| 腳位 90 | VDD — Positive supply voltage |
| 腳位 91 | TRCLK/RG6 — Trace clock / GPIO RG6 |
| 腳位 92 | TRD0/RG7 — Trace data 0 / GPIO RG7 |
| 腳位 93 | TRD1/RG8 — Trace data 1 / GPIO RG8 |
| 腳位 94 | TRD2/RG9 — Trace data 2 / GPIO RG9 |
| 腳位 95 | PMD7/RD7 — Parallel master port data 7 / GPIO RD7 |
| 腳位 96 | PMD6/RD6 — Parallel master port data 6 / GPIO RD6 |
| 腳位 97 | PMD5/RD5 — Parallel master port data 5 / GPIO RD5 |
| 腳位 98 | PMD4/RD4 — Parallel master port data 4 / GPIO RD4 |
| 腳位 99 | PMD3/RD3 — Parallel master port data 3 / GPIO RD3 |
| 腳位 100 | MCLR — Master clear reset (active-low) |
典型應用
PIC32MX270F512LT-I/GJX 適用於 6 應用s: 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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 PIC32MX270F512LT-I/GJX — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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 |
主要差異化特點
- Integrated USB 2.0 HS/FS OTG with on-chip transceiver (對比PIC32MX170F512L-I/PF)
- Compact 100-pin TFBGA package (7x7 mm) with full I/O count (對比PIC32MX270F512L-I/PF)
- 83 DMIPS performance at 50 MHz with 5-stage pipeline M4K core (對比PIC32MX230F128L-I/PF)
- Parallel Master Port with dual read/write buffers for graphics (對比PIC32MX230F064B-I/SP)
設計說明
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.
合規資訊
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.