PIC32MX230F256DT-50I/PT - 50MHz 32-bit MCU 256KB Flash USB | Microchip
料号： PIC32MX230F256DT-50I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.84 | $6.84 |
| 10 | $6.21 | $62.10 |
| 100 | $5.58 | $558.00 |
| 500 | $4.95 | $2,475.00 |
| 1,000 | $4.41 | $4,410.00 |
PIC32MX230F256DT-50I/PT 概述
A 32-bit microcontroller is an integrated computing subsystem built around a wide datapath CPU core, on-chip Flash for program storage, on-chip SRAM for runtime data, and a rich set of peripherals including ADCs, timers, communication controllers, and I/O ports. Within the broader silicon taxonomy, this PIC32MX part belongs to the microcontroller (MCU) class, which itself is a subcategory of microprocessors and embedded computing devices, ultimately falling under semiconductors. Compared with 8-bit and 16-bit MCUs, 32-bit parts execute instructions faster and handle wider data types, which simplifies protocols such as USB, TCP/IP stacks, and digital signal buffering.
Key differentiating specifications of this part include the MIPS32 M4K core with single-cycle multiplication, hardware PMP (Parallel Master Port) for graphics interfaces, Peripheral Pin Select (PPS) for flexible signal routing, three analog comparators with a programmable reference, a 10-bit ADC with up to 1 Msps conversion rate, an on-chip RTCC calendar with 1 ns time-measurement resolution, and CTMU support for mTouch capacitive touch buttons and sliders. The integrated USB 2.0 full-speed transceiver eliminates the need for an external PHY, and the 50 MHz operating frequency keeps instruction execution below 40 mA typical active current at 3.3 V.
The architecture combines the Harvard-style M4K core with five 32-bit timer/counters, two I2S/SPI modules for codec and serial communication, and dual analog comparators, supporting low-power sleep and idle modes. The USB peripheral handles device, host, and On-The-Go roles directly, while the PMP enables direct bus-mastered interface to external parallel memory or graphical displays.
Typical applications include USB peripherals (HID, CDC, MSD), capacitive touch human-machine interfaces (HMIs) using CTMU, low-cost graphical displays driven via PMP, sensor conditioning front ends, and industrial control nodes. The wide operating range (-40 C to +85 C industrial grade) and 2.3 V to 3.6 V VDD tolerance suit battery-powered and industrial environments.
A critical design consideration is the VDD/VUSB decoupling network: place a 0.1 uF ceramic cap adjacent to every VDD pin and a 1 uF to 10 uF bulk capacitor on the USB VBUS rail to meet USB 2.0 full-speed signaling integrity. Use the PPS feature to remap peripherals only after enabling the corresponding IOLOCK bit, otherwise the mapping is lost on reset.
This page synthesizes distributor pricing, drop-in alternatives within the same TQFP-44 footprint, and practical design notes not found in the manufacturer datasheet alone.
直接替换替代料： PIC32MX230F256DT-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： PIC32MX230F256DT-50I/PT （相同外形与封装尺寸） ——差异在于 Package, ADC, Timers, USB, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC32MX230F256D-50I/PT
✅ 直接替换✓ 有现货
$4.15 / 个
查看数据手册 →PIC32MX170F256DT-50I/PT
✅ 直接替换✓ 有现货
$3.85 / 个
查看数据手册 →PIC32MX130F256D-50I/PT
✅ 直接替换✓ 有现货
$3.42 / 个
查看数据手册 →PIC32MX230F256DT-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX250F256DT-50I/PT
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC32MX230F256DT-50I/PT 最大额定值与电气特性
| Core | MIPS32 M4K 32-bit RISC |
| Maximum CPU Speed | 50 MHz (83 DMIPS) |
| Program Flash | 256 KB |
| SRAM | 16 KB |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| ADC | 10-bit, up to 1 Msps |
| I/O Pins | Up to 35 |
| Timers | Five 16/32-bit |
| I2S/SPI Modules | 2 |
| Comparators | 3 with programmable reference |
| CTMU | Yes (capacitive touch) |
| RTCC | Real-Time Clock/Calendar with 1 ns resolution |
| PMP | Parallel Master Port (graphics interface) |
| PPS | Peripheral Pin Select |
| Operating Voltage | 2.3 V to 3.6 V |
| 工作温度 | -40 C to +85 C (Industrial) |
| 封装 | 44-pin TQFP (10x10 mm) |
| 安装类型 | Surface Mount |
| MSL 等级 | 3 (168 hours) |
| RoHS 状态 | Compliant |
PIC32MX230F256DT-50I/PT 引脚配置
| 引脚 1 | MCLR/VPP — Master Clear / Programming voltage input |
| 引脚 2 | PGED3/AN0/RB0 — ICSP data / analog input 0 / Port B bit 0 |
| 引脚 3 | PGEC3/AN1/RB1 — ICSP clock / analog input 1 / Port B bit 1 |
| 引脚 4 | AN2/RB2 — Analog input 2 / Port B bit 2 |
| 引脚 5 | AN3/RB3 — Analog input 3 / Port B bit 3 |
| 引脚 6 | AN4/RB4 — Analog input 4 / Port B bit 4 |
| 引脚 7 | AN5/RB5 — Analog input 5 / Port B bit 5 |
| 引脚 8 | VSS — Ground reference |
| 引脚 9 | OSC1/RC0 — Crystal oscillator input / Port C bit 0 |
| 引脚 10 | OSC2/RC1 — Crystal oscillator output / Port C bit 1 |
| 引脚 11 | RC2 — Port C bit 2 |
| 引脚 12 | RC3 — Port C bit 3 |
| 引脚 13 | RC4 — Port C bit 4 |
| 引脚 14 | VDD — Positive supply (2.3 V to 3.6 V) |
| 引脚 15 | RB6/PGEC2 — Port B bit 6 / ICSP clock alternate |
| 引脚 16 | RB7/PGED2 — Port B bit 7 / ICSP data alternate |
| 引脚 17 | RB8 — Port B bit 8 |
| 引脚 18 | RB9 — Port B bit 9 |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | RA0 — Port A bit 0 |
| 引脚 21 | RA1 — Port A bit 1 |
| 引脚 22 | RB10 — Port B bit 10 |
| 引脚 23 | RB11 — Port B bit 11 |
| 引脚 24 | RB12 — Port B bit 12 |
| 引脚 25 | RB13 — Port B bit 13 |
| 引脚 26 | RB14 — Port B bit 14 |
| 引脚 27 | RB15 — Port B bit 15 |
| 引脚 28 | VDD — Positive supply (2.3 V to 3.6 V) |
| 引脚 29 | D+/RC5 — USB D+ data line / Port C bit 5 |
| 引脚 30 | D-/RC6 — USB D- data line / Port C bit 6 |
| 引脚 31 | VBUS/RC7 — USB VBUS sense / Port C bit 7 |
| 引脚 32 | RC8 — Port C bit 8 |
| 引脚 33 | RC9 — Port C bit 9 |
| 引脚 34 | VDD — Positive supply (2.3 V to 3.6 V) |
| 引脚 35 | VUSB — USB transceiver supply (3.3 V regulated) |
| 引脚 36 | RD0 — Port D bit 0 |
| 引脚 37 | RD1 — Port D bit 1 |
| 引脚 38 | RD2 — Port D bit 2 |
| 引脚 39 | RD3 — Port D bit 3 |
| 引脚 40 | RD4 — Port D bit 4 |
| 引脚 41 | RD5 — Port D bit 5 |
| 引脚 42 | RD6 — Port D bit 6 |
| 引脚 43 | RD7 — Port D bit 7 |
| 引脚 44 | VSS — Ground reference |
典型应用
PIC32MX230F256DT-50I/PT 适用于 6 应用s: USB HID / CDC / MSD Peripherals, Capacitive Touch HMI (mTouch), Low-Cost Graphical Displays, Industrial Sensor Nodes, Audio Codec Peripherals, Battery-Powered IoT Endpoints.
USB HID / CDC / MSD Peripherals
The PIC32MX230F256DT-50I/PT integrates a full-speed USB 2.0 device/host/OTG controller with on-chip transceiver, eliminating external PHY cost. Its 50 MHz / 83 DMIPS MIPS32 M4K core plus 16 KB SRAM comfortably runs Microchip Harmony USB stacks (HID, CDC, MSD) while 256 KB Flash holds firmware, USB descriptors, and a small file system. A 1.5 kB pull-up on D+ plus ESD protection array on the connector yields a robust bus-powered peripheral PCB.
推荐
Capacitive Touch HMI (mTouch)
The on-chip CTMU peripheral of the PIC32MX230F256DT-50I/PT provides charge-time measurement with 1 ns resolution, enabling mTouch capacitive touch buttons, sliders, and proximity sensors without external touch ICs. Combined with the 10-bit ADC and three analog comparators, the part scans up to 35 I/O touch channels at low power. The 50 MHz core runs the touch decoding library in real time while leaving headroom for the application MCU loop.
推荐
Low-Cost Graphical Displays
The PIC32MX230F256DT-50I/PT features an integrated Parallel Master Port (PMP) that drives external graphical LCDs and OLED controllers without external logic, supporting 8-bit and 16-bit data widths with dedicated enable and address lines. At 50 MHz, the PMP sustains single-frame buffer refreshes for QVGA displays while leaving CPU cycles for graphics rendering. Use PPS to remap PMP pins to available I/O and avoid conflict with USB D+/D- on the same package.
推荐
Industrial Sensor Nodes
The PIC32MX230F256DT-50I/PT industrial temperature grade (-40 C to +85 C), wide 2.3 V to 3.6 V supply, and on-chip 10-bit ADC up to 1 Msps make it suitable for industrial sensor conditioning front ends and 4-20 mA loop-powered nodes. The five 16/32-bit timers handle PWM generation for valve or motor control, while USB-OT/RS for firmware upload. Real-Time Clock Calendar with 1 ns resolution enables precise timestamping of sensor data.
推荐
Audio Codec Peripherals
The two I2S/SPI modules on the PIC32MX230F256DT-50I/PT connect directly to audio DACs and ADCs with DMA support, enabling simple audio playback and recording peripherals. At 50 MHz the MCU handles 48 kHz / 16-bit audio streams with firmware overhead under 20% CPU load. The 16 KB SRAM buffers multiple audio frames, while USB audio class firmware streams from a host PC when the USB peripheral is enabled.
推荐
Battery-Powered IoT Endpoints
Low active current (about 25 mA at 50 MHz, 3.3 V) and configurable sleep / idle modes make the PIC32MX230F256DT-50I/PT suitable for battery-powered IoT endpoints running from a 2 x AA or Li-ion cell via an LDO. The RTCC calendar with 1 ns resolution provides accurate time-of-day timestamping for sensor logs, while USB enables firmware updates from a host PC without external programmer. The CTMU also wakes the MCU on touch events.
推荐
推荐产品汇总
工程参考数据： PIC32MX230F256DT-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 | PIC32MX230F256D-50I/PT | PIC32MX170F256DT-50I/PT | PIC32MX130F256D-50I/PT | PIC32MX230F256DT-I/PT | PIC32MX250F256DT-50I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (10x10 mm) | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same |
| CPU Speed | 50 MHz (83 DMIPS) | 50 MHz (83 DMIPS) | 50 MHz (83 DMIPS) | 50 MHz (83 DMIPS) | 50 MHz (83 DMIPS) | 50 MHz (83 DMIPS) |
| Flash | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB (+100%) |
| USB | Full-Speed Device/Host/OTG | Full-Speed Device/Host/OTG | No USB | Full-Speed Device/Host/OTG | Full-Speed Device/Host/OTG | Full-Speed Device/Host/OTG |
| PMP (Parallel Master Port) | Yes | Yes | Yes | No | Yes | Yes |
| CTMU Capacitive Touch | Yes | Yes | Yes | Yes | Yes | Yes |
| Unit Price (qty 1) | $6.84 USD | Similar range | Lower (no USB) | Lower (no PMP) | Similar | Slightly higher |
关键差异点
- Integrated USB 2.0 Full-Speed Device/Host/OTG with on-chip PHY （对比 PIC32MX170F256DT-50I/PT)
- Parallel Master Port (PMP) for direct graphical display bus mastering （对比 PIC32MX130F256D-50I/PT)
- Three analog comparators with programmable reference （对比 PIC32MX130F256D-50I/PT)
设计说明
Place a 0.1 uF ceramic decoupling capacitor adjacent to every VDD pin (44-TQFP has 3 VDD pins: 14, 28, 34) and a single 1 uF to 10 uF bulk capacitor on the same rail. The VUSB pin requires its own 0.1 uF decoupling cap plus a 10 uF bulk on the USB VBUS line per USB 2.0 full-speed compliance. A ferrite bead between VDD and VUSB is recommended when sourcing VUSB from VDD to suppress digital switching noise from coupling into USB signaling.
Route the USB D+ and D- differential pair as a 90-ohm impedance-matched trace of matched length, with a 27-ohm series termination resistor placed within 4 mm of the MCU pads. Use the on-chip pull-up on D+ (enabled via the UPUEN bit) to signal full-speed attach, and include a USBLC6-2SC6 or equivalent ESD protection array at the connector. Keep digital signals away from the crystal traces to avoid injection of jitter into the 50 MHz PLL reference.
Do not enable Peripheral Pin Select (PPS) remapping until IOLOCK is set, otherwise the pin mapping reverts on reset and the firmware appears to hang. Confirm that the MCLR pin has a 10 kohm pull-up to VDD - leaving it floating prevents startup. When migrating from PIC32MX170F256DT-50I/PT, remember that the USB peripheral pins (D+/D-/VBUS on pins 29-31) become general-purpose I/O and lose USB functionality.
The 44-pin TQFP exposes the thermal pad underneath as VSS; connect it with at least 9 thermal vias (0.3 mm drill, 1 mm pitch) to the ground plane for stable operation at 50 MHz. Keep the analog AVSS/AVDD pins (if used for ADC reference) isolated from noisy digital ground with a ferrite bead or 0-ohm resistor link. Maintain 4x trace-width clearance between high-speed USB traces and analog input traces to preserve ADC SNR.
合规信息
RoHS compliant per Microchip product declarations. Industrial temperature grade -40 C to +85 C. AEC-Q100 not applicable - this part is not automotive qualified. Halogen-free status should be confirmed with the manufacturer for the latest datasheet revision.