PIC32MX350F256LT-I/PF - 32-bit PIC32MX MCU 80MHz 256KB | Microchip
MPN: PIC32MX350F256LT-I/PF ✓ Hoạt độngPIC32MX350F256LT-I/PF Tóm tắt
A 32-bit microcontroller (MCU) is a single-chip processor with a 32-bit datapath, registers, and ALU, enabling higher code density and richer data handling than 8-bit or 16-bit MCUs. PIC32MX sits within Microchip's MIPS-based PIC32 family, which is itself a sub-family of the broader 32-bit MCU market. These devices bridge the gap between 8-bit PIC MCUs and Cortex-M class parts, offering deterministic interrupt response, low power modes, and a wide range of integrated peripherals aimed at consumer, industrial, IoT, and motor-control applications.
Key features of the PIC32MX350F256LT-I/PF include hardware multipliers and dividers that accelerate DSP-style operations, a Peripheral Pin Select (PPS) remappable I/O architecture that lets most digital peripherals be assigned to most I/O pins, and a charge-pump regulator that allows full 80 MHz operation from a 2.3V to 3.6V supply without external clocks or regulators. The 256 KB Flash is split into 232 KB user code plus 12 KB boot Flash. Five 16-bit timers/counters, two I2C, two SPI/I2S, and a USB 2.0 full-speed On-The-Go controller (per family datasheet) round out the integrated peripherals. An RTCC, JTAG debugger, and trace boundary-scan interface are supported, plus 5 PWM channels from the OC module and a 16-bit PMP for external parallel bus expansion.
The architecture is built on a Harvard-style memory bus with a 5-stage pipeline, prefetch cache, and tightly-coupled flash, giving it strong Dhrystone 2.1 performance per MHz for deterministic control loops. PPS enables flexible PCB routing, especially useful when migrating between pin-compatible PIC32 variants or when a layout conflict forces a different pin assignment.
Typical applications include industrial control panels, home appliances, motor-control front-ends, IoT gateways, USB peripherals, human-machine interface (HMI) boards, and consumer audio/graphics controllers. Wide operating range (-40C to +85C) suits industrial and outdoor enclosures.
When designing with this part, verify pin assignments via PPS early in the schematic phase because PPS can remap most peripherals but imposes order-of-assignment rules that affect simulation models. Plan code size carefully within the 232 KB user partition (the boot partition may pad to 256 KB).
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet - useful for embedded engineers comparing Microchip PIC32 options or sourcing cross-compatible variants.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX350F256LT-I/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 PIC32MX350F256LT-I/PF (cùng hình factor và footprint) — khác nhau ở Package, ADC, Mounting Type, Operating Temperature, Timers.
PIC32MX350F256LT-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX370F512LT-I/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX270F512LT-I/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX340F256L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX250F256L-I/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX460F512L-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX350F256LT-I/PF Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Speed | 80 MHz |
| Program Flash Memory | 256 KB (232 KB user + 12 KB boot) |
| SRAM | 64 KB |
| Số chân | 100 |
| Hộp | TQFP-100 (14x14 mm) |
| Supply Voltage Range | 2.3 V to 3.6 V |
| ADC | 10-bit, 1 Msps, up to 28 channels |
| Analog Comparators | 2 |
| I2C | 2 modules |
| SPI / I2S | 2 modules (SPI or I2S configurable) |
| Timers/Counters | 5 x 16-bit |
| Output Compare / PWM | 5 x 16-bit OC channels |
| Parallel Master Port (PMP) | 16-bit external bus interface |
| Peripheral Pin Select (PPS) | Yes (remappable digital peripherals) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial, -I suffix) |
| Kiểu lắp đặt | Surface Mount (Tape & Reel, T suffix) |
| Trạng thái RoHS | Compliant |
| Cấp MSL | MSL 3 (JEDEC J-STD-020) |
Cấu hình chân PIC32MX350F256LT-I/PF
| Chân 1 | RG15 — PPS-mappable digital I/O |
| Chân 2 | RG12 — PPS-mappable digital I/O / external interrupt |
| Chân 3 | RG13 — PPS-mappable digital I/O |
| Chân 4 | RG14 — PPS-mappable digital I/O |
| Chân 5 | VDD — Positive supply (2.3V to 3.6V) |
| Chân 6 | VSS — Ground |
| Chân 7 | RF0 — PPS-mappable digital I/O |
| Chân 8 | RF1 — PPS-mappable digital I/O |
| Chân 9 | RG0 — PPS-mappable digital I/O |
| Chân 10 | RG1 — PPS-mappable digital I/O |
| Chân 11 | RF2 — PPS-mappable digital I/O |
| Chân 12 | RF3 — PPS-mappable digital I/O |
| Chân 13 | RG2 — PPS-mappable digital I/O |
| Chân 14 | RG3 — PPS-mappable digital I/O |
| Chân 15 | RG4 — PPS-mappable digital I/O |
| Chân 16 | RG5 — PPS-mappable digital I/O |
| Chân 17 | VDD — Positive supply |
| Chân 18 | VSS — Ground |
| Chân 19 | RA0 — Analog input / digital I/O |
| Chân 20 | RA1 — Analog input / digital I/O |
| Chân 21 | RB0 — PPS-mappable digital I/O / programming |
| Chân 22 | RB1 — PPS-mappable digital I/O |
| Chân 23 | RB2 — PPS-mappable digital I/O |
| Chân 24 | RB3 — PPS-mappable digital I/O |
| Chân 25 | RC12 — PPS-mappable digital I/O |
| Chân 26 | RC15 — PPS-mappable digital I/O |
| Chân 27 | RC13 — PPS-mappable digital I/O |
| Chân 28 | RC14 — PPS-mappable digital I/O |
| Chân 29 | RD0 — PPS-mappable digital I/O |
| Chân 30 | RD1 — PPS-mappable digital I/O |
| Chân 31 | RD2 — PPS-mappable digital I/O |
| Chân 32 | RD3 — PPS-mappable digital I/O |
| Chân 33 | RD4 — PPS-mappable digital I/O |
| Chân 34 | RD5 — PPS-mappable digital I/O |
| Chân 35 | RD6 — PPS-mappable digital I/O |
| Chân 36 | RD7 — PPS-mappable digital I/O |
| Chân 37 | RC0 — PPS-mappable digital I/O |
| Chân 38 | RC1 — PPS-mappable digital I/O |
| Chân 39 | RC2 — PPS-mappable digital I/O |
| Chân 40 | RC3 — PPS-mappable digital I/O |
| Chân 41 | RC4 — PPS-mappable digital I/O |
| Chân 42 | RC5 — PPS-mappable digital I/O |
| Chân 43 | VSS — Ground |
| Chân 44 | VDD — Positive supply |
| Chân 45 | RB4 — PPS-mappable digital I/O |
| Chân 46 | RB5 — PPS-mappable digital I/O / OC PWM |
| Chân 47 | RB6 — PPS-mappable digital I/O |
| Chân 48 | RB7 — PPS-mappable digital I/O |
| Chân 49 | RB8 — PPS-mappable digital I/O |
| Chân 50 | RB9 — PPS-mappable digital I/O |
| Chân 51 | RB10 — PPS-mappable digital I/O |
| Chân 52 | RB11 — PPS-mappable digital I/O |
| Chân 53 | RB12 — PPS-mappable digital I/O |
| Chân 54 | RB13 — PPS-mappable digital I/O |
| Chân 55 | RB14 — PPS-mappable digital I/O |
| Chân 56 | RB15 — PPS-mappable digital I/O |
| Chân 57 | RD8 — PPS-mappable digital I/O |
| Chân 58 | RD9 — PPS-mappable digital I/O |
| Chân 59 | RD10 — PPS-mappable digital I/O |
| Chân 60 | RD11 — PPS-mappable digital I/O |
| Chân 61 | RD13 — PPS-mappable digital I/O |
| Chân 62 | RD12 — PPS-mappable digital I/O |
| Chân 63 | RC6 — PPS-mappable digital I/O |
| Chân 64 | RC7 — PPS-mappable digital I/O |
| Chân 65 | RC8 — PPS-mappable digital I/O |
| Chân 66 | RC9 — PPS-mappable digital I/O |
| Chân 67 | VSS — Ground |
| Chân 68 | VDD — Positive supply |
| Chân 69 | RA2 — Analog input / digital I/O |
| Chân 70 | RA3 — Analog input / digital I/O |
| Chân 71 | RA4 — Analog input / digital I/O |
| Chân 72 | RA5 — Analog input / digital I/O |
| Chân 73 | RA6 — Analog input / digital I/O |
| Chân 74 | RA7 — Analog input / digital I/O |
| Chân 75 | RA8 — Analog input / digital I/O |
| Chân 76 | RA9 — Analog input / digital I/O |
| Chân 77 | RA10 — Analog input / digital I/O |
| Chân 78 | RA11 — Analog input / digital I/O |
| Chân 79 | RE0 — PPS-mappable digital I/O |
| Chân 80 | RE1 — PPS-mappable digital I/O |
| Chân 81 | RE2 — PPS-mappable digital I/O |
| Chân 82 | RE3 — PPS-mappable digital I/O |
| Chân 83 | RE4 — PPS-mappable digital I/O |
| Chân 84 | RE5 — PPS-mappable digital I/O |
| Chân 85 | RE6 — PPS-mappable digital I/O |
| Chân 86 | RE7 — PPS-mappable digital I/O |
| Chân 87 | RF4 — PPS-mappable digital I/O |
| Chân 88 | RF5 — PPS-mappable digital I/O |
| Chân 89 | RG6 — PPS-mappable digital I/O |
| Chân 90 | RG7 — PPS-mappable digital I/O |
| Chân 91 | RG8 — PPS-mappable digital I/O |
| Chân 92 | RG9 — PPS-mappable digital I/O |
| Chân 93 | VDD — Positive supply |
| Chân 94 | VSS — Ground |
| Chân 95 | RG10 — PPS-mappable digital I/O |
| Chân 96 | RG11 — PPS-mappable digital I/O |
| Chân 97 | RC10 — PPS-mappable digital I/O |
| Chân 98 | RC11 — PPS-mappable digital I/O |
| Chân 99 | RD14 — PPS-mappable digital I/O |
| Chân 100 | RD15 — PPS-mappable digital I/O |
Ứng dụng tiêu biểu
PIC32MX350F256LT-I/PF phù hợp cho 6 Áp dụngs: Industrial Control Panel HMI, USB Peripheral Device, Home Appliance Motor Control, IoT Sensor Gateway, Consumer Audio Controller, Point-of-Sale Terminal.
Industrial Control Panel HMI
The PIC32MX350F256LT-I/PF fits industrial control panels because of its 80 MHz MIPS32 M4K core for responsive touch UI and its 64 KB SRAM to host graphics buffers. Its 256 KB Flash (232 KB user) accommodates a real-time GUI library plus the IEC 61131-3-style control logic. The 10-bit 1 Msps ADC with 28 channels digitizes sensor feedback from temperature, pressure, and current transducers. PPS allows flexible PCB routing when the panel layout has tight constraints, and the industrial -40C to +85C rating supports outdoor enclosures. Place the MCU between the display driver and field I/O to centralize control and reduce BOM cost versus Cortex-M class parts at the same price tier.
Được đề xuất
USB Peripheral Device
The PIC32MX350F256LT-I/PF can serve as a USB peripheral controller because the PIC32MX3/4 family integrates a USB 2.0 full-speed OTG controller (subject to variant confirmation). Its 80 MHz CPU provides sufficient bandwidth to handle USB protocol stack plus application data transfer without offloading to a dedicated USB controller. The 64 KB SRAM hosts USB endpoint buffers plus a composite device driver. PPS allows flexible routing when PCB layout forces USB pins away from default assignments. Place the part close to the USB receptacle and ESD protection array, with the 48 MHz crystal reference driving the USB PLL for full-speed signaling.
Được đề xuất
Home Appliance Motor Control
The PIC32MX350F256LT-I/PF is suited for home appliances such as washing machines, refrigerators, and HVAC blowers because it combines 5 16-bit timers with 5 OC PWM channels for brushed DC or BLDC motor control. The 2 analog comparators support zero-cross detection and current-sense threshold detection without external hardware. PPS enables flexible PCB routing when the motor driver board has tight space constraints. Place the MCU close to the gate driver with the 16-bit PMP driving parallel LCD displays for the user interface. The 256 KB Flash hosts the motor control state machine plus user interface logic.
Được đề xuất
IoT Sensor Gateway
The PIC32MX350F256LT-I/PF fits IoT sensor gateways because its 2 SPI/I2S and 2 I2C ports can host Wi-Fi, BLE, or LoRa transceivers alongside multiple sensors. The 64 KB SRAM accommodates an RTOS plus TCP/IP stack, and the 256 KB Flash hosts the application code plus over-the-air update boot region. The 80 MHz core executes encryption libraries at usable rates. Place the MCU between the radio module and the sensor farm, with the PPS architecture enabling the radio and sensor buses to share I/O flexibly. Industrial temperature range supports outdoor and industrial deployments.
Được đề xuất
Consumer Audio Controller
The PIC32MX350F256LT-I/PF can drive consumer audio products because its 2 SPI/I2S ports connect to audio DACs and ADCs directly. The 64 KB SRAM hosts audio buffers, while the 256 KB Flash stores firmware plus compressed audio assets. The 10-bit ADC at 1 Msps is sufficient for control feedback, while the I2S bus streams audio data to external DACs. PPS enables flexible PCB routing when the audio board layout has tight signal-integrity requirements. Place the MCU adjacent to the audio CODEC with the I2S clock and data lines routed as impedance-matched differential pairs.
Được đề xuất
Point-of-Sale Terminal
The PIC32MX350F256LT-I/PF serves point-of-sale (POS) terminals because of its high pin count of 100, supporting multiple peripherals: 5 timers for keypad scanning, 2 I2C for secure element / NFC, 2 SPI/I2S for display and printer, plus the 16-bit PMP for parallel TFT display interface. The 64 KB SRAM accommodates the UI stack, and the 256 KB Flash hosts firmware plus transaction records. The 10-bit ADC monitors battery and temperature. PPS allows flexible pin assignments when PCB layout forces peripheral routing around mechanical constraints.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX350F256LT-I/PF — 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 | PIC32MX350F256LT-I/PT | PIC32MX370F512LT-I/PF | PIC32MX270F512LT-I/PF | PIC32MX340F256L | PIC32MX250F256L-I/PF | PIC32MX460F512L-I/PT |
|---|---|---|---|---|---|---|---|
| Package | TQFP-100 (14x14 mm) | TQFP-64 (10x10 mm) | TQFP-100 (14x14 mm) - same | TQFP-100 (14x14 mm) - same | TQFP-100 (14x14 mm) - same | TQFP-100 (14x14 mm) - same | TQFP-100 (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | MIPS32 M4K 80 MHz | MIPS32 M4K 80 MHz | MIPS32 M4K 80 MHz | MIPS32 M4K 80 MHz | MIPS32 M4K 80 MHz | MIPS32 M4K 50 MHz | MIPS32 M4K 80 MHz |
| Flash Memory | 256 KB | 256 KB - same | 512 KB (+100%) | 512 KB (+100%) | 256 KB - same | 256 KB - same | 512 KB (+100%) |
| SRAM | 64 KB | 64 KB - same | 128 KB (+100%) | 128 KB (+100%) | 32 KB (-50%) | 32 KB (-50%) | 32 KB (-50%) |
| Pin Count | 100 | 64 (-36%) | 100 - same | 100 - same | 100 - same | 100 - same | 100 - same |
| Operating Temperature | -40C to +85C | -40C to +85C - same | -40C to +85C - same | -40C to +85C - same | -40C to +85C - same | -40C to +85C - same | -40C to +85C - same |
| Peripheral Pin Select | Yes | Yes - same | Yes - same | Yes - same | Yes - same | Yes - same | Yes - same |
Bảo phân biệt quan trọng
- Highest pin count in PIC32MX350 family for maximum peripheral expansion (vsPIC32MX350F256LT-I/PT)
- 256 KB Flash with PPS architecture in mid-cost MCU tier (vsPIC32MX340F256L)
- 100-pin TQFP with full PIC32MX3/4 peripheral set (vsPIC32MX250F256L-I/PF)
Ghi chú thiết kế
The PIC32MX350F256LT-I/PF requires 2.3V to 3.6V supply. Decouple each VDD/VSS pair with a 100 nF X7R ceramic plus a 4.7 uF bulk capacitor placed within 5 mm of the VDD pin. The internal 1.2 V LDO powering the core does not require external components. Estimated core current at 80 MHz is approximately 30 mA per MHz of activity; place a 10 uF bulk capacitor on the regulator input to absorb transient load steps. JTAG trace powered separately requires its own decoupling network.
Place the 8 MHz primary crystal within 5 mm of the OSC1/OSC2 pins, with the load capacitors (typically 15-33 pF) routed symmetrically to ground. For USB trace operation the 48 MHz PLL requires the crystal reference; isolate it from noisy switching nodes with a ground guard ring. Keep analog AVREF traces away from digital switching signals with at least 3x trace-spacing distance, and use a separate analog ground island that joins the digital ground only at the MCU ground pin. Estimated PCB area for a 4-layer layout is approximately 30 mm x 30 mm including crystal and bulk caps.
When using PPS, do not map two peripherals to the same pin at the same time - the PIC32MX PPS architecture is one-to-one and conflict surfaces are unreported. Lock configuration registers before user code runs by setting CFGCON bit appropriately, otherwise PPS mappings may be reset unexpectedly. Do not exceed 3.6V on any digital I/O pin; ADC inputs may go higher with care but absolute maximum for AVREF is VDD + 0.3V. Always include the JTAG TDI/TDO pull-ups to keep firmware serial while DEBUG is disabled.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product declaration. Lead-free and halogen-free per TQFP packaging material. AEC-Q100 not applicable - this is a general-purpose industrial part, not automotive grade. For automotive applications, choose PIC32MX variants with automotive qualification marks on the datasheet.
