PIC32MX470F512L-I/PT - 80MHz 32-bit MCU 512KB Flash | Microchip
MPN： PIC32MX470F512L-I/PT ✓ 啟用中PIC32MX470F512L-I/PT 概覽
What is a PIC32MX microcontroller? The PIC32MX is Microchip's MIPS-based 32-bit MCU family, succeeding the 16-bit PIC24/dsPIC lines. It combines a MIPS32 M4K core with on-chip Flash and SRAM, plus a peripheral set targeted at HMI, audio, USB, and advanced analog. Within the broader taxonomy, PIC32MX belongs to microcontroller -> 32-bit MCU -> embedded processor -> semiconductor. It bridges 8/16-bit MCU simplicity with 32-bit throughput.
Key features include MIPS16e instruction mode for up to 40% smaller code footprint, four-channel hardware DMA with automatic data-size detection, dual I2S for audio, USB 2.0 Full-Speed OTG (Host/Device/OTG), CTMU for capacitive touch, and low-power Idle/Sleep modes with multiple wake sources. The 100-pin TQFP exposes 81 digital I/O via PPS remapping, allowing nearly any peripheral function to be assigned to any pin.
The device runs from 2.3V to 3.6V (industrial -40C to +85C). An internal 8 MHz Fast RC oscillator with PLL supports the 80MHz core clock; a separate 31.25 kHz Low-Power RC drives the RTCC. Programming/debugging uses standard ICSP via PGECx/PGEDx pairs - any of the multiple pairs on the L-package may be used.
Typical applications include USB peripherals (HID, CDC, MSD, audio), audio playback with I2S DACs, low-cost HMI with CTMU touch keys, industrial control with USB-serial bridges, and graphics/text TFT panels via PMP. The generous Flash and SRAM also support embedded web servers and IoT edge nodes.
When designing, always reserve the Vcap pin for the internal 1.8V regulator, place 10uF + 0.1uF bulk ceramics adjacent to every VDD/VSS pair, and ensure the USB D+/D- lines are 90 ohm differential with a precision 1.5 kohm pull-up to Vbus (D+) for full-speed device mode.
This page synthesizes current distributor pricing, same-family drop-in alternatives, and practical PCB design notes not found on Microchip's datasheet summary, enabling faster BOM decisions.
直接替換替代品，適用於 PIC32MX470F512L-I/PT — 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： PIC32MX470F512L-I/PT （相同外形與佔位） — 差異在於 ADC, Package, DMA Channels, Operating Temperature, USB.
PIC32MX470F512LT-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX470F512L-120/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX470F512HT-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX460F512L-80I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX450F256L-120/PF
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC32MX470F512L-I/PT 最大額定值與電氣特性
| Core | MIPS32 M4K |
| CPU Architecture | 32-bit RISC |
| Maximum CPU Speed | 80 MHz (family max 120 MHz) |
| MIPS Performance | up to 150 DMIPS (family) |
| Program Flash | 512 KB |
| SRAM | 128 KB |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| 工作溫度 | -40 C to +85 C (Industrial, 'I') |
| 封裝 | 100-pin TQFP (PT), 12x12 mm |
| 安裝類型 | Surface Mount |
| I/O Pins | 81 (with Peripheral Pin Select) |
| USB | USB 2.0 Full-Speed OTG |
| UART | 5 |
| SPI / I2S | 2 (SPI or I2S selectable) |
| I2C | 2 |
| ADC | 10-bit, up to 28 channels, 1 Msps |
| Analog Comparators | 2 |
| Timers (16-bit) | 5 |
| DMA Channels | 4 (with auto data-size detection) |
| RTCC | Hardware Real-Time Clock and Calendar |
| CTMU | Yes (capacitive touch support) |
| PMP | Parallel Master Port (for graphics) |
| Instruction Mode | MIPS16e (up to 40% code-size reduction) |
| Low-Power Modes | Idle and Sleep |
| MSL 等級 | 3 |
| RoHS 狀態 | Compliant |
PIC32MX470F512L-I/PT 100-pin tqfp (pt), 12x12 mm 腳位配置指南
PIC32MX470F512L-I/PT（100-pin tqfp (pt), 12x12 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： PIC32MX470F512L-I/PT.
請參閱 資料表 以查看完整腳位配置。
典型應用
PIC32MX470F512L-I/PT 適用於 6 應用s: USB HID / CDC / MSD Peripherals, Audio Playback with I2S DAC, Capacitive Touch HMI Panels, Industrial USB-Serial Bridges and Gateways, IoT Edge Nodes and Embedded Web Servers, Graphics / Text Display Controllers (PMP).
USB HID / CDC / MSD Peripherals
The PIC32MX470F512L-I/PT integrates USB 2.0 Full-Speed OTG with on-chip transceiver, making it ideal for USB HID keyboards/mice, CDC virtual COM ports, and MSD mass-storage devices. The 512 KB Flash fits USB stacks plus application code (Microchip MLA / Harmony USB framework), while 128 KB SRAM supports USB endpoint buffers plus application data. Place a 90 ohm differential pair on D+/D- with 0.47 uF on VUSB, and a 1.5 kohm pull-up to D+ for full-speed device enumeration. Unlike MCUs requiring an external USB PHY/regulator, the PIC32MX4 needs only the Vcap 1.8V decoupling and VUSB 3.3V filter capacitor, reducing BOM cost.
推薦
Audio Playback with I2S DAC
The PIC32MX470F512L-I/PT's dual I2S ports and 128 KB SRAM make it suitable for audio playback designs driving external I2S DACs at 44.1-96 kHz sample rates. The DMA controller offloads I2S buffer filling from the CPU, while the 80 MHz MIPS M4K core handles decoding (MP3, FLAC, AAC). The 512 KB Flash can store compressed audio assets or boot images. Connect the I2S BCLK/LRCK/DATA to PPS-remappable pins; add an external low-jitter crystal for accurate audio clock recovery, since the internal RC is insufficient for hi-fi audio.
推薦
Capacitive Touch HMI Panels
The PIC32MX470F512L-I/PT integrates the Charge Time Measurement Unit (CTMU), enabling up to 28 capacitive touch channels without an external touch controller. Combined with the 100-pin TQFP and the PMP parallel master port, the same MCU can drive a small TFT or OLED display and read a touch keypad matrix. The 10-bit ADC supports resistive touch panels as an alternative. Use Microchip's mTouch library for touch tuning; configure CTMU current source via ADC channel assignment, and reserve at least 16 KB Flash for the touch firmware library.
推薦
Industrial USB-Serial Bridges and Gateways
For industrial USB-to-UART, USB-to-SPI, or USB-to-I2C bridges, the PIC32MX470F512L-I/PT's five UARTs, two SPI, two I2C, and USB-OTG deliver unmatched integration in a 100-pin TQFP. The 128 KB SRAM supports buffering for high-throughput UART rates up to 12 Mbps, while the hardware DMA offloads block transfers. Industrial-grade -40 C to +85 C temperature operation covers factory-floor environments. Use galvanic isolation on USB lines for industrial surge immunity, and pair with an external RS-485 transceiver for industrial fieldbus bridges.
推薦
IoT Edge Nodes and Embedded Web Servers
The 512 KB Flash accommodates the Microchip Harmony TCP/IP stack plus application logic, while 128 KB SRAM supports a few TCP sockets and HTTP buffers, enabling small embedded web servers and MQTT IoT nodes. The PIC32MX470F512L-I/PT can also act as a USB-hosted Wi-Fi or Ethernet bridge via SPI/EMAC-less Ethernet (ENC28J60 over SPI). Its low-power Sleep and Idle modes plus fast wake-up suit battery-powered sensor nodes. Connect an external MRF24WG0MA Wi-Fi module over SPI for wireless connectivity, since the MCU has no radio.
推薦
Graphics / Text Display Controllers (PMP)
The PIC32MX470F512L-I/PT's Parallel Master Port (PMP) can drive small TFT or OLED panels directly up to 8-bit parallel data plus control, ideal for low-cost HMI products like thermostats, instrument panels, and small appliances. The 80 MHz core handles graphics rendering while 128 KB SRAM supports double-buffered framebuffers up to 64K pixels at 16-bit color. Combined with CTMU capacitive touch, a single chip delivers display + touch + USB for firmware update - all in the 100-pin TQFP footprint with 81 I/O available.
推薦
推薦產品摘要
工程參考資料，適用於 PIC32MX470F512L-I/PT — 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 | PIC32MX470F512LT-I/PT | PIC32MX470F512L-120/PT | PIC32MX470F512HT-I/PT | PIC32MX460F512L-80I/PT | PIC32MX450F256L-120/PF |
|---|---|---|---|---|---|---|
| Package | TQFP-100 (PT, 12x12 mm) | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed (max) | 80 MHz | 80 MHz | 120 MHz | 80 MHz | 80 MHz | 120 MHz |
| Flash | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB | 256 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB | 32 KB | 128 KB |
| USB | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | None | USB 2.0 FS OTG |
| CTMU (Touch) | Yes | Yes | Yes | Yes | No | Yes |
| DMA Channels | 4 | 4 | 4 | 4 | 0 | 4 |
| UART Count | 5 | 5 | 5 | 5 | 4 | 5 |
主要差異化特點
- Highest memory density at 80 MHz in 100-pin TQFP (對比PIC32MX460F512L-80I/PT)
- Tape-and-reel drop-in alternative (對比PIC32MX470F512LT-I/PT)
- 120 MHz upgrade path on same footprint (對比PIC32MX470F512L-120/PT)
- Full peripheral set at 80 MHz vs reduced peripheral set at higher speed (對比PIC32MX450F256L-120/PF)
設計說明
Place a 10 uF + 0.1 uF ceramic capacitor pair adjacent to every VDD/VSS pin pair of the PIC32MX470F512L-I/PT. The Vcap pin (pin 1) requires an external 4.7 uF to 10 uF low-ESR ceramic for the internal 1.8V regulator; this regulator powers the core and cannot be bypassed. If USB is enabled, also place 0.47 uF on the VUSB pin (pin 36) and 10 uF on the VBUS sense pin. Power-up sequencing is automatic - VDD must rise monotonically to at least 2.3V before the regulator stabilizes.
Route the USB D+ and D- lines as a 90 ohm differential pair with ground reference, matching lengths within 150 mil. Place the 90 ohm termination resistor at the MCU end (not at the connector). Keep the USB clock crystal (if used) at least 5 mm from analog-sensitive traces. The 100-pin TQFP thermal pad is the exposed die-attach paddle; solder it to a 25x25 mm copper pour with at least 6 thermal vias for production-grade thermal performance.
Do not confuse the PT suffix (100-pin TQFP 12x12 mm body) with the PF suffix (100-pin TQFP 14x14 mm body) - they have different PCB land patterns and are NOT drop-in compatible on the same PCB. When migrating from a PIC32MX3/MX4 design, verify the PGECx/PGEDx pair selection (any of multiple pairs work, but PGEC1/PGED1 is default). Programming voltage VPP is generated internally on modern PIC32MX devices, eliminating the legacy 13V programming supply requirement.
For high-speed SPI or I2S audio interfaces, keep clock traces under 50 mm and use series 22-33 ohm damping resistors at the driver end if reflections exceed 10% on a TDR measurement. Enable Peripheral Pin Select (PPS) carefully - the PPS register lock prevents accidental remapping of PGEC1/PGED1. Use the Input Capture or Output Compare PPS modules instead of fixed peripherals when flexible routing is required for dense 100-pin designs.
合規資訊
RoHS compliant and lead-free per Microchip PIC32MX3/4 family documentation. Industrial -40 C to +85 C temperature grade (I suffix). AEC-Q100 not applicable - this is a general-purpose MCU, not automotive-qualified; for automotive use consider PIC32MX variants with Q1 designation. REACH compliance reported in Microchip annual declaration. Halogen-free status was not found in the verified web data and is recorded as unknown.
