PIC32MX270F512H-50I/PT - 50MHz 32-bit MCU 512KB Flash | Microchip
料号： PIC32MX270F512H-50I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.2 | $7.20 |
| 10 | $6.48 | $64.80 |
| 100 | $5.76 | $576.00 |
| 500 | $5.18 | $2,590.00 |
| 1,000 | $4.61 | $4,610.00 |
PIC32MX270F512H-50I/PT 概述
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), data memory (SRAM), and configurable peripherals. The 32-bit MCU class sits above 8-bit and 16-bit MCUs in arithmetic throughput and addressable memory, making it suitable for USB stacks, graphics buffering, and DSP-like signal processing. PIC32MX parts target general-purpose embedded designs where deterministic real-time performance and low-cost development tools (MPLAB X + Harmony) matter.
Key features of this part include a hardware multiplier/divider for fast DSP loops, an 8-bit Parallel Master Port with dual buffers for TFT/QVGA displays, up to five 16-bit timers, two UART modules with IrDA support, two I2C modules, and CTMU (Charge Time Measurement Unit) for capacitive touch and ultrasonic sensing. The PPS remap engine reassigns digital peripheral pins to a wide choice of physical I/O, simplifying PCB routing.
Architecturally the device pairs the MIPS M4K core with a 5-stage pipeline, prefetch cache, and single-cycle 32x32 hardware multiply. Its 3.3V core, 2.5V-3.6V operating range, and four power modes (Run, Idle, Sleep, Deep Sleep) let designers trade wake-up latency for quiescent current as low as a few microamps in Deep Sleep.
Typical applications include consumer audio/USB accessories, HMI panels with small TFTs, industrial control front-ends with capacitive touch, low-cost graphics terminals, and CAN/USB bridging nodes. The "HMI" silicon revision adds hardware resources targeted at audio codec interfaces and Parallel Master Port graphics.
When designing with this MCU, reserve 5 pins for ICSP (PGECx/PGEDx pairs plus MCLR) so that board revisions remain debuggable. Use the PPS remap before committing to a pinout to avoid blocking high-priority peripherals on the same physical pin.
This page aggregates distributor pricing, same-package drop-in alternatives across Microchip's PIC32MX230/250/270/530/570/570 family, and practical design notes beyond what the manufacturer datasheet alone provides.
直接替换替代料： PIC32MX270F512H-50I/PT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC32MX270F512H-50I/PT （相同外形与封装尺寸） ——差异在于 Package, Parallel Master Port (PMP), ADC, SPI Modules, I2C Modules.
快速对比工具——选择替代料号进行并排对比：
PIC32MX270F256H-50I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX570F512H-50I/PT
✅ 直接替换✓ 有现货
$4.11 / 个
查看数据手册 →PIC32MX450F512H-50I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX270F512H-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX230F512H-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX170F512H-50I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX270F512H-50I/PT 最大额定值与电气特性
| Core | MIPS32 M4K |
| CPU Architecture | 32-bit RISC |
| Maximum CPU Speed | 50 MHz (83 DMIPS) |
| Program Memory (Flash) | 512 KB |
| SRAM | 64 KB |
| Operating Voltage (VDD) | 2.5 V to 3.6 V |
| USB | USB 2.0 Full-Speed OTG |
| ADC | 10-bit, up to 1 MSPS |
| ADC Channels | Up to 28 |
| SPI Modules | Up to 4 |
| I2S Modules | 2 |
| UART Modules | 2 (with IrDA) |
| I2C Modules | 2 |
| Parallel Master Port (PMP) | Yes (dual buffers) |
| Peripheral Pin Select (PPS) | Yes |
| CTMU | Yes (touch/ultrasonic) |
| Timers | 5 x 16-bit |
| 工作温度 | -40C to +85C (Industrial) |
| 封装 | TQFP-64 (10x10 mm) |
| 安装类型 | Surface Mount |
| MSL 等级 | 3 |
| RoHS 状态 | Compliant |
PIC32MX270F512H-50I/PT 引脚配置
| 引脚 1 | RG15 — General purpose I/O (PPS remappable) |
| 引脚 2 | RG12 — General purpose I/O |
| 引脚 3 | MCLR — Master clear / reset input, active low |
| 引脚 4 | RA0 — Analog / digital I/O |
| 引脚 5 | RA1 — Analog / digital I/O |
| 引脚 6 | RA2 — Analog / digital I/O |
| 引脚 7 | RA3 — Analog / digital I/O |
| 引脚 8 | RA4 — Analog / digital I/O |
| 引脚 9 | AVDD — Analog supply (3.3V) |
| 引脚 10 | AVSS — Analog ground |
| 引脚 11 | RB0 — PPS remappable I/O |
| 引脚 12 | RB1 — PPS remappable I/O |
| 引脚 13 | RB2 — PPS remappable I/O |
| 引脚 14 | RB3 — PPS remappable I/O |
| 引脚 15 | RB4 — PPS remappable I/O |
| 引脚 16 | RB5 — PPS remappable I/O |
| 引脚 17 | RB6 — PPS remappable I/O (ICSP PGEC2) |
| 引脚 18 | RB7 — PPS remappable I/O (ICSP PGED2) |
| 引脚 19 | RB8 — PPS remappable I/O |
| 引脚 20 | RB9 — PPS remappable I/O |
| 引脚 21 | RB10 — PPS remappable I/O |
| 引脚 22 | RB11 — PPS remappable I/O |
| 引脚 23 | VSS — Digital ground |
| 引脚 24 | VDD — Digital supply (3.3V) |
| 引脚 25 | RB12 — PPS remappable I/O |
| 引脚 26 | RB13 — PPS remappable I/O |
| 引脚 27 | RB14 — PPS remappable I/O |
| 引脚 28 | RB15 — PPS remappable I/O |
| 引脚 29 | RD8 — PPS remappable I/O |
| 引脚 30 | RD9 — PPS remappable I/O |
| 引脚 31 | RD10 — PPS remappable I/O |
| 引脚 32 | RD11 — PPS remappable I/O |
| 引脚 33 | RD12 — PPS remappable I/O |
| 引脚 34 | RD13 — PPS remappable I/O |
| 引脚 35 | RD14 — PPS remappable I/O |
| 引脚 36 | RD15 — PPS remappable I/O |
| 引脚 37 | RC12 — PPS remappable I/O |
| 引脚 38 | RC13 — PPS remappable I/O |
| 引脚 39 | RC14 — PPS remappable I/O |
| 引脚 40 | RC15 — PPS remappable I/O |
| 引脚 41 | VSS — Digital ground |
| 引脚 42 | VDD — Digital supply (3.3V) |
| 引脚 43 | OSCI — Crystal oscillator input |
| 引脚 44 | OSCO — Crystal oscillator output |
| 引脚 45 | SOSCI — Secondary oscillator input (32.768 kHz) |
| 引脚 46 | SOSCO — Secondary oscillator output |
| 引脚 47 | D+ — USB D+ line |
| 引脚 48 | D- — USB D- line |
| 引脚 49 | VBUS — USB VBUS detect input |
| 引脚 50 | VUSB3V3 — USB internal regulator output (3.3V) |
| 引脚 51 | RF0 — PPS remappable I/O |
| 引脚 52 | RF1 — PPS remappable I/O |
| 引脚 53 | RF2 — PPS remappable I/O |
| 引脚 54 | RF3 — PPS remappable I/O |
| 引脚 55 | RF4 — PPS remappable I/O |
| 引脚 56 | RF5 — PPS remappable I/O |
| 引脚 57 | RG2 — PPS remappable I/O |
| 引脚 58 | RG3 — PPS remappable I/O |
| 引脚 59 | RG6 — PPS remappable I/O |
| 引脚 60 | RG7 — PPS remappable I/O |
| 引脚 61 | RG8 — PPS remappable I/O |
| 引脚 62 | RG9 — PPS remappable I/O |
| 引脚 63 | RG13 — PPS remappable I/O |
| 引脚 64 | RG14 — PPS remappable I/O |
典型应用
PIC32MX270F512H-50I/PT 适用于 6 应用s: USB Audio Accessories, Small TFT / QVGA HMI Panels, Capacitive Touch Front-Ends, Industrial Control Nodes, USB-CAN / USB-SPI Bridges, Consumer Audio Dongles.
USB Audio Accessories
The PIC32MX270F512H-50I/PT is a strong fit for USB audio peripherals because its integrated USB 2.0 Full-Speed OTG controller handles USB Audio class enumeration on the host side without an external PHY, while the two I2S modules connect directly to common stereo codecs (e.g., PCM1774, CS43L22). At 50 MHz / 83 DMIPS the core comfortably runs 48 kHz / 24-bit USB audio streams plus a small DSP loop for tone shaping. The 512 KB Flash holds the USB Audio descriptor stack, and the 64 KB SRAM provides headroom for USB endpoint buffers plus a small mixer. Place a 12 MHz crystal close to OSCI/OSCO pins and route D+/D- as a 90 ohm differential pair per USB 2.0 spec.
推荐
Small TFT / QVGA HMI Panels
For HMI front-ends with small TFTs, the PIC32MX270F512H-50I/PT pairs its Parallel Master Port (PMP) with dual read/write buffers so the CPU offloads row/column handshaking while the display controller streams pixels. At 50 MHz and 64 KB SRAM the device can hold a partial QVGA (320x240x16) framebuffer plus UI state, with the 512 KB Flash storing graphics fonts and assets. The Peripheral Pin Select (PPS) engine reassigns LCD data lines to free pins, simplifying PCB routing for compact panels. Use PMP in multiplexed 8-bit mode to keep the pin count manageable.
推荐
Capacitive Touch Front-Ends
The PIC32MX270F512H-50I/PT includes the CTMU (Charge Time Measurement Unit), which measures capacitance changes at sub-pF resolution for touch buttons, sliders, and water-tolerant proximity sensors. Combined with 28 ADC channels and 5 timers, the MCU can scan a 12-key capacitive matrix while also reading analog sensors like temperature or light. The 512 KB Flash holds the touch-detection FSM plus calibration tables, and the 2.5 V - 3.6 V supply range supports coin-cell backed operation with Deep Sleep currents of a few microamps.
推荐
Industrial Control Nodes
In industrial PLC-style nodes the PIC32MX270F512H-50I/PT drives multi-protocol field comms (UART, SPI, I2C) while the hardware 32x32 multiplier runs fast PID loops at 50 MHz / 83 DMIPS, easily handling kHz-rate control loops. The 512 KB Flash holds Modbus RTU or CANopen stacks plus the application, and the 64 KB SRAM supports packet buffers. The -40C to +85C industrial temperature grade and 3.6 V tolerant I/O make it appropriate for factory-floor backplanes when paired with proper isolation.
推荐
USB-CAN / USB-SPI Bridges
As a USB-CAN or USB-SPI bridge, the PIC32MX270F512H-50I/PT provides a deterministic 50 MHz core, 64 KB SRAM for packet buffering, and four SPI modules for fast peripheral fan-out from a USB host. The integrated USB 2.0 Full-Speed OTG handles CDC plus vendor-class enumeration without external PHY, while the 512 KB Flash holds the USB stack plus the protocol translation layer. The TQFP-64 (10x10 mm) package is hand-solderable and easy to assemble on low-cost two-layer boards, making it well suited to bridge dongles.
推荐
Consumer Audio Dongles
For consumer audio dongles such as USB-to-headset adapters, the PIC32MX270F512H-50I/PT runs USB Audio Class 1.0/2.0 firmware, streams decoded PCM into an I2S codec, and supports volume control via CTMU capacitive buttons. The 64 KB SRAM is sufficient for USB endpoint buffers plus a small I2S TX queue, and 512 KB Flash holds the descriptor tree plus DSP code. Low-power modes (Idle, Sleep, Deep Sleep) let the dongle drop into a few-microamp standby when audio is idle, while the industrial temp grade supports broad consumer environments.
推荐
推荐产品汇总
工程参考数据： PIC32MX270F512H-50I/PT ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC32MX270F256H-50I/PT | PIC32MX570F512H-50I/PT | PIC32MX450F512H-50I/PT | PIC32MX270F512H-I/PT | PIC32MX230F512H-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-64 (10x10 mm) | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Core | MIPS32 M4K, 32-bit | MIPS32 M4K, 32-bit | MIPS32 M4K, 32-bit | MIPS32 M4K, 32-bit | MIPS32 M4K, 32-bit | MIPS32 M4K, 32-bit |
| Maximum CPU Speed | 50 MHz (83 DMIPS) | 50 MHz (83 DMIPS) | 50 MHz (83 DMIPS) | 50 MHz (83 DMIPS) | 40 MHz (-I grade) | 40 MHz (-I grade) |
| Flash Memory | 512 KB | 256 KB (-50%) | 512 KB | 512 KB | 512 KB | 512 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| USB | 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 (variant) |
| I2S Modules | 2 | 2 | 2 | 2 | 2 | 0 or 1 (variant-dependent) |
| Operating Voltage | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V |
关键差异点
- Larger Flash than PIC32MX270F256H-50I/PT in same TQFP-64 footprint （对比 PIC32MX270F256H-50I/PT)
- More peripheral headroom vs PIC32MX570F512H-50I/PT （对比 PIC32MX570F512H-50I/PT)
- Higher 50 MHz CPU speed vs PIC32MX230F512H-I/PT （对比 PIC32MX230F512H-I/PT)
设计说明
Reserve the ICSP pins (PGECx/PGEDx pairs and MCLR) on your final PCB layout even if you plan to program in-circuit only once. The PIC32MX270F512H-50I/PT can be debugged via multiple PGECx/PGEDx pin pairs; whichever pair you assign for production must keep both signals routable to a 6-pin header or test pad. Per the family datasheet, all VSS and VDD pins must be connected even if internal logic does not appear to use them.
USB 2.0 Full-Speed signal integrity requires a 90 ohm differential impedance on the D+/D- traces to pin 47/48, with the trace length matched within 2 mm and no stubs. Place the 12 MHz crystal and load capacitors as close to OSCI/OSCO (pins 43/44) as possible, and tie VUSB3V3 (pin 50) to a 0.01 uF bypass cap to ground even if USB is unused, to keep the internal regulator stable. Keep the TQFP-64 thermal pad on a continuous ground pour for heat spreading and signal return.
Place a 10 uF bulk capacitor plus a 0.1 uF decoupling cap at each VDD pin pair (pins 24/42 in the TQFP-64 layout) and at the AVDD/AVSS pair (pins 9/10) for the ADC. ADC accuracy on the PIC32MX270F512H-50I/PT depends on a quiet analog rail; route AVDD through a small ferrite or RC filter from VDD if the board has switching noise. Estimated core current at 50 MHz is roughly 30 mA active / 1-3 mA Deep Sleep, so size the 3.3 V regulator for at least 100 mA to allow for peripheral surges.
合规信息
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40C to +85C; not AEC-Q100 qualified - choose AEC-Q100 grade PIC32 variants for automotive.
