PIC32MX350F256LT-I/TL - 80MHz 32-bit MCU 256KB Flash | Microchip
MPN: PIC32MX350F256LT-I/TL ✓ Hoạt độngPIC32MX350F256LT-I/TL Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals on one die. The PIC32MX3/4 family uses the MIPS32 M4K Harvard architecture with a 5-stage pipeline, positioning it in the hierarchy: microcontroller -> embedded processor -> 32-bit RISC core. Microchip specifies up to 150 DMIPS and 83.2 CoreMark at the device's 120MHz siblings, and the 80MHz-rated PIC32MX350F256L delivers proportionally lower throughput while retaining identical peripheral IP. The 32-bit datapath enables efficient handling of graphics buffers, audio codecs, and TCP/IP stacks that strain 8/16-bit MCUs.
Key features include two I2C, two SPI/I2S, five UART/USART with IrDA/LINbus support, a Parallel Master Port (PMP) for graphics or external memory, two analog comparators, a 10-bit ADC with up to 28 input channels, and five 16-bit timers. A USB 2.0 full-speed OTG controller with on-chip transceiver is integrated, plus a JTAG/2-wire programming/debug interface. The 124-pin VTLA package provides 85 GPIO pins and a dedicated Ethernet RMII-friendly peripheral complement for connected designs.
Typical applications include USB peripherals, IoT edge nodes, HMI/grafical displays with PMP-driven TFTs, consumer audio, industrial control with LINbus, and motor control. The 256KB Flash supports Bluetooth stacks or TCP/IP via Microchip's free Harmony framework, while 64KB SRAM accommodates 320x240 LCD framebuffers or audio buffering for I2S codecs.
A primary design consideration is supplying a clean 2.5V to 3.6V rail and observing the 124-VTLA exposed-pad soldering profile. Stack depth and individual RAM regions must be aligned for Harmony project generation. For best ADC accuracy, enable the dedicated VREF and decouple AVDD separately from DVDD.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX350F256LT-I/TL — 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 PIC32MX350F256LT-I/TL (cùng hình factor và footprint) — khác nhau ở Core Architecture, Operating Temperature, Package, ADC, DMA Channels.
PIC32MX350F256L-I/TL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX350F256LT-V/TL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX350F256HT-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX450F256LT-I/TL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX370F256LT-I/TL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX330F256LT-I/TL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX274F256DT-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX250F256LT-I/TL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX350F256LT-I/TL Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Frequency | 80 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| Data Memory (SRAM) | 64 KB |
| Operating Voltage Range | 2.5 V to 3.6 V |
| I/O Voltage | 5 V tolerant inputs |
| Số lượng chân | 124 |
| Hộp | VTLA 9x9 mm with exposed thermal pad |
| GPIO Count | 85 |
| ADC | 10-bit, up to 28 channels |
| Analog Comparators | 2 |
| UART/USART | 5 (IrDA, LINbus) |
| I2C | 2 |
| SPI / I2S | 2 |
| Parallel Master Port (PMP) | Yes |
| USB | USB 2.0 Full-Speed OTG with on-chip transceiver |
| Timers | 5 x 16-bit |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Trạng thái RoHS | Compliant |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC32MX350F256LT-I/TL
| Chân 1 | NC — No connect (reserved) |
| Chân 2 | OSC1/RC1 — Crystal oscillator input or external clock |
| Chân 3 | OSC2/RC2 — Crystal oscillator output |
| Chân 4 | VDD — Digital supply voltage (2.5V-3.6V) |
| Chân 5 | VSS — Digital ground |
| Chân 6 | PGEC1 — Programming/debug clock (ICSP) |
| Chân 7 | PGED1 — Programming/debug data (ICSP) |
| Chân 8 | RA0 — GPIO port A bit 0 / analog input AN0 |
| Chân 9 | RA1 — GPIO port A bit 1 / analog input AN1 |
| Chân 10 | RA2 — GPIO port A bit 2 / analog input AN2 |
| Chân 11 | RA3 — GPIO port A bit 3 / analog input AN3 |
| Chân 12 | RA4 — GPIO port A bit 4 / analog input AN4 |
| Chân 13 | RA5 — GPIO port A bit 5 / analog input AN5 |
| Chân 14 | RA6 — GPIO port A bit 6 |
| Chân 15 | RA7 — GPIO port A bit 7 |
| Chân 16 | VSS — Digital ground |
| Chân 17 | AVDD — Analog supply voltage |
| Chân 18 | AVSS — Analog ground |
| Chân 19 | RB0 — GPIO port B bit 0 / analog input AN8 |
| Chân 20 | RB1 — GPIO port B bit 1 / analog input AN9 |
| Chân 21 | RB2 — GPIO port B bit 2 / analog input AN10 |
| Chân 22 | RB3 — GPIO port B bit 3 / analog input AN11 |
| Chân 23 | RB4 — GPIO port B bit 4 / analog input AN12 |
| Chân 24 | RB5 — GPIO port B bit 5 / analog input AN13 |
| Chân 25 | RB6 — GPIO port B bit 6 / PGEC2 programming clock |
| Chân 26 | RB7 — GPIO port B bit 7 / PGED2 programming data |
| Chân 27 | RB8 — GPIO port B bit 8 / analog input AN14 |
| Chân 28 | RB9 — GPIO port B bit 9 / analog input AN15 |
| Chân 29 | RB10 — GPIO port B bit 10 |
| Chân 30 | RB11 — GPIO port B bit 11 |
| Chân 31 | RB12 — GPIO port B bit 12 |
| Chân 32 | RB13 — GPIO port B bit 13 |
| Chân 33 | RB14 — GPIO port B bit 14 |
| Chân 34 | RB15 — GPIO port B bit 15 |
| Chân 35 | VSS — Digital ground |
| Chân 36 | VDD — Digital supply voltage |
| Chân 37 | RC1 — GPIO port C bit 1 |
| Chân 38 | RC2 — GPIO port C bit 2 |
| Chân 39 | RC3 — GPIO port C bit 3 |
| Chân 40 | RC4 — GPIO port C bit 4 |
| Chân 41 | VDD — Digital supply voltage |
| Chân 42 | VSS — Digital ground |
| Chân 43 | RC12 — GPIO port C bit 12 |
| Chân 44 | RC13 — GPIO port C bit 13 |
| Chân 45 | RC14 — GPIO port C bit 14 |
| Chân 46 | RC15 — GPIO port C bit 15 |
| Chân 47 | RD0 — GPIO port D bit 0 |
| Chân 48 | RD1 — GPIO port D bit 1 |
| Chân 49 | RD2 — GPIO port D bit 2 |
| Chân 50 | RD3 — GPIO port D bit 3 |
| Chân 51 | RD4 — GPIO port D bit 4 |
| Chân 52 | RD5 — GPIO port D bit 5 |
| Chân 53 | RD6 — GPIO port D bit 6 |
| Chân 54 | RD7 — GPIO port D bit 7 |
| Chân 55 | VSS — Digital ground |
| Chân 56 | VDD — Digital supply voltage |
| Chân 57 | RD8 — GPIO port D bit 8 |
| Chân 58 | RD9 — GPIO port D bit 9 |
| Chân 59 | RD10 — GPIO port D bit 10 |
| Chân 60 | RD11 — GPIO port D bit 11 |
| Chân 61 | RD12 — GPIO port D bit 12 |
| Chân 62 | RD13 — GPIO port D bit 13 |
| Chân 63 | RD14 — GPIO port D bit 14 |
| Chân 64 | RD15 — GPIO port D bit 15 |
| Chân 65 | RE0 — GPIO port E bit 0 / PMD0 (PMP) |
| Chân 66 | RE1 — GPIO port E bit 1 / PMD1 (PMP) |
| Chân 67 | RE2 — GPIO port E bit 2 / PMD2 (PMP) |
| Chân 68 | RE3 — GPIO port E bit 3 / PMD3 (PMP) |
| Chân 69 | RE4 — GPIO port E bit 4 / PMD4 (PMP) |
| Chân 70 | RE5 — GPIO port E bit 5 / PMD5 (PMP) |
| Chân 71 | RE6 — GPIO port E bit 6 / PMD6 (PMP) |
| Chân 72 | RE7 — GPIO port E bit 7 / PMD7 (PMP) |
| Chân 73 | VSS — Digital ground |
| Chân 74 | VDD — Digital supply voltage |
| Chân 75 | RF0 — GPIO port F bit 0 / PMD8 (PMP) |
| Chân 76 | RF1 — GPIO port F bit 1 / PMD9 (PMP) |
| Chân 77 | RF2 — GPIO port F bit 2 / PMD10 (PMP) |
| Chân 78 | RF3 — GPIO port F bit 3 / PMD11 (PMP) |
| Chân 79 | RF4 — GPIO port F bit 4 / PMD12 (PMP) |
| Chân 80 | RF5 — GPIO port F bit 5 / PMD13 (PMP) |
| Chân 81 | RF6 — GPIO port F bit 6 |
| Chân 82 | RF7 — GPIO port F bit 7 |
| Chân 83 | VSS — Digital ground |
| Chân 84 | VDD — Digital supply voltage |
| Chân 85 | RG0 — GPIO port G bit 0 |
| Chân 86 | RG1 — GPIO port G bit 1 |
| Chân 87 | RG2 — GPIO port G bit 2 |
| Chân 88 | RG3 — GPIO port G bit 3 |
| Chân 89 | RG6 — GPIO port G bit 6 |
| Chân 90 | RG7 — GPIO port G bit 7 |
| Chân 91 | RG8 — GPIO port G bit 8 |
| Chân 92 | RG9 — GPIO port G bit 9 |
| Chân 93 | VSS — Digital ground |
| Chân 94 | VDD — Digital supply voltage |
| Chân 95 | D+ — USB D+ data line |
| Chân 96 | D- — USB D- data line |
| Chân 97 | VBUS — USB VBUS detect |
| Chân 98 | VUSB — USB transceiver supply (3.3V) |
| Chân 99 | RPF4/SDA1 — I2C1 SDA (PPS mapped) |
| Chân 100 | RPF5/SCL1 — I2C1 SCL (PPS mapped) |
| Chân 101 | SDA2 — I2C2 SDA |
| Chân 102 | SCL2 — I2C2 SCL |
| Chân 103 | SDI1 — SPI1 data in |
| Chân 104 | SDO1 — SPI1 data out |
| Chân 105 | SCK1 — SPI1 clock |
| Chân 106 | SS1 — SPI1 slave select |
| Chân 107 | SDI2 — SPI2 data in |
| Chân 108 | SDO2 — SPI2 data out |
| Chân 109 | SCK2 — SPI2 clock |
| Chân 110 | SS2 — SPI2 slave select |
| Chân 111 | U1RX — UART1 receive |
| Chân 112 | U1TX — UART1 transmit |
| Chân 113 | U1RTS — UART1 ready to send |
| Chân 114 | U1CTS — UART1 clear to send |
| Chân 115 | U2RX — UART2 receive |
| Chân 116 | U2TX — UART2 transmit |
| Chân 117 | U2RTS — UART2 ready to send |
| Chân 118 | U2CTS — UART2 clear to send |
| Chân 119 | U3RX — UART3 receive |
| Chân 120 | U3TX — UART3 transmit |
| Chân 121 | U4RX — UART4 receive |
| Chân 122 | U4TX — UART4 transmit |
| Chân 123 | U5RX — UART5 receive |
| Chân 124 | U5TX — UART5 transmit |
Ứng dụng tiêu biểu
PIC32MX350F256LT-I/TL phù hợp cho 6 Áp dụngs: USB Peripheral and HID Devices, Industrial Control with LINbus, HMI and Graphical Display Controller, IoT Edge Node and Sensor Hub, Consumer Audio and DSP, Motor Control and BLDC Drives.
USB Peripheral and HID Devices
The PIC32MX350F256LT-I/TL fits USB peripheral applications through its integrated USB 2.0 full-speed OTG controller with on-chip transceiver, which eliminates external PHY cost and PCB area in HID-class devices. With 80 MHz MIPS32 M4K core, the MCU handles USB HID report generation, USB CDC virtual COM, and vendor-class firmware stacks while leaving CPU headroom for application logic. The 256 KB Flash supports Microchip's free USB stack plus application code, and 64 KB SRAM comfortably holds USB endpoint buffers and descriptor tables. Place a 48 MHz crystal on the dedicated OSC1/OSC2 pins and add USB D+/D- 15K pull-downs on cable-detect per USB OTG specification. This configuration delivers a low-BOM USB device in less than 1 square inch of PCB.
Được đề xuất
Industrial Control with LINbus
For industrial LINbus node designs, the PIC32MX350F256LT-I/TL provides five UART channels with LINbus hardware support, allowing direct LIN 1.3/2.0 protocol handling without an external transceiver-managed core burden. The 80 MHz core runs the LIN scheduler and PID control loop simultaneously while the 10-bit ADC with 28 channels reads sensor inputs from temperature, pressure, and current shunt amplifiers. Operating from -40C to +85C industrial range and 2.5V-3.6V supply, the device survives factory floor environments. The 256 KB Flash supports LIN configuration tables and customer-specific calibration data, while 64 KB SRAM holds the diagnostic buffer.
Được đề xuất
HMI and Graphical Display Controller
The PIC32MX350F256LT-I/TL drives graphical TFT displays via its Parallel Master Port (PMP) which provides 8/16-bit parallel interface to ST7789V or ILI9341 controllers at full frame rates. With 80 MHz core clock and 64 KB SRAM, the MCU sustains 320x240 16-bit color framebuffer updates plus touch-screen handling via I2C. The 256 KB Flash holds graphics libraries, fonts, and UI screens while 5 x 16-bit timers generate PWM for backlight control. Use the 2 SPI channels for SD card storage of assets. Compared to PIC24 alternatives, the 32-bit datapath offers 4x memory bandwidth for buffer updates, eliminating visible tearing at 60 Hz refresh.
Được đề xuất
IoT Edge Node and Sensor Hub
For IoT edge nodes, the PIC32MX350F256LT-I/TL aggregates sensor data via its two I2C channels (each supporting 1 MHz Fast Mode Plus) and five UART channels for RS-485 Modbus or BLE module interfaces. The 28-channel 10-bit ADC reads analog sensors while the 2 analog comparators trigger threshold-based wake events. With 256 KB Flash, the MCU runs Microchip Harmony TCP/IP or LoRaWAN stacks over UART-attached modules. Operating from 2.5V-3.6V supports direct battery connection in 3.6V LiSOCl2 or 3.0V LiMnO2 primary cell designs; the 5V-tolerant digital inputs permit interfacing 5V industrial sensor outputs without level shifters.
Được đề xuất
Consumer Audio and DSP
In consumer audio applications, the PIC32MX350F256LT-I/TL interfaces to audio DACs and codecs via its 2 I2S channels operating up to 192 kHz sample rate. The 80 MHz MIPS32 M4K core executes audio processing algorithms like biquad filtering or dynamic range compression in real time, while the 64 KB SRAM serves as audio buffer. I2C configures codec registers, and the 5 x 16-bit timers generate precise audio clocks with picosecond resolution via PPS (Peripheral Pin Select). This combination delivers CD-quality audio processing at lower BOM cost than dedicated DSP ICs for sub-$50 audio products.
Được đề xuất
Motor Control and BLDC Drives
The PIC32MX350F256LT-I/TL drives BLDC and stepper motors using its 5 x 16-bit timers with PWM fault input, supporting center-aligned complementary PWM generation required for 3-phase inverter bridges. The 80 MHz core runs field-oriented control (FOC) algorithm at 20 kHz loop rate while the 10-bit ADC samples phase currents through synchronized ADC-triggered by PWM. With 256 KB Flash, the MCU accommodates Microchip's free Motor Control Library plus customer application code; 64 KB SRAM holds FOC intermediate variables and the trapezoidal/sinusoidal commutation tables. Operating from -40C to +85C industrial range suits motor enclosures.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX350F256LT-I/TL — 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 | PIC32MX350F256L-I/TL | PIC32MX350F256LT-V/TL | PIC32MX450F256LT-I/TL | PIC32MX370F256LT-I/TL | PIC32MX330F256LT-I/TL |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 124-VTLA (9x9) | 124-VTLA (9x9) - same | 124-VTLA (9x9) - same | 124-VTLA (9x9) - same | 124-VTLA (9x9) - same | 124-VTLA (9x9) - same |
| CPU Clock Speed | 80 MHz | 80 MHz | 80 MHz | 120 MHz (+50%) | 80 MHz | 50 MHz (-37.5%) |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +105C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| USB Controller | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG |
| Packaging Format | Tape & Reel (T suffix) | Tray (no T suffix) | Tape & Reel + extended temp | Tape & Reel | Tape & Reel | Tape & Reel |
Bảo phân biệt quan trọng
- Integrated USB 2.0 Full-Speed OTG with on-chip transceiver (vsPIC32MX230F256DT-I/ML (same family, no USB))
- Parallel Master Port (PMP) for graphics and external memory (vsPIC32MX170F256B-I/ML (no PMP))
- Higher pin count (124 VTLA) versus 64-pin TQFP alternatives (vsPIC32MX350F128LT-I/TL (100-pin TQFP))
Ghi chú thiết kế
The PIC32MX350F256LT-I/TL requires a clean 2.5V to 3.6V supply on each VDD pin with 100 nF decoupling placed within 3 mm of every VDD/VSS pair. Estimated: at 80 MHz CPU clock full peripheral activity, core current draw is approximately 50 mA plus peripheral current. Use a ferrite bead between DVDD and AVDD, with separate 10 uF + 100 nF decoupling on AVDD for ADC accuracy above 9 ENOB. The USB VUSB pin also requires its own 100 nF decoupling capacitor near the package pin.
The 124-VTLA 9x9 mm package has an exposed thermal pad (EP) on the underside that MUST be soldered to a PCB thermal land of at least 6x6 mm copper pour connected to VSS. Estimated: with the EP properly soldered to a 4-layer PCB with 2 oz copper outer layers, theta JA is approximately 20 C/W. Without the thermal pad soldered, junction temperature can exceed 125C at 80 MHz full activity, causing thermal shutdown or reliability degradation.
The 48 MHz primary oscillator crystal must be placed within 5 mm of the OSC1/OSC2 pins with guard traces connected to VSS to reduce EMI. The ICSP programming pins PGEC1/PGED1 should be brought out to a 2x3 or 1x6 header with 4.7K pull-ups on both lines. For USB designs, place the USB D+/D- traces with 90 ohm differential impedance matching and route over a continuous ground plane; keep total trace length under 25 mm and add 90 ohm termination at the connector.
Configuration bits must be set correctly to enable JTAG or ICSP and select the correct oscillator mode; leaving them at default can lock the device. The PPS (Peripheral Pin Select) feature allows remapping of digital peripherals but does NOT work on all pins - refer to the pinout table for RPn-capable pins. ADC channels AN5 through AN15 share pins with PORTB and require the PBADEN bit cleared in configuration to use as digital I/O. Avoid using the USB D+/D- pins for any other function even if USB is unused.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC32MX350F256H automotive variants for vehicle applications.
