PIC32MX230F256B-I/ML - 32-bit MCU 256KB Flash 28-QFN | Microchip
MPN: PIC32MX230F256B-I/ML ✓ Hoạt độngPIC32MX230F256B-I/ML Tóm tắt
What is a PIC32MX microcontroller? The PIC32MX family is Microchip's 32-bit MIPS-based microcontroller line, sitting in the hierarchy: microcontroller (MCU) -> 32-bit MCU -> MIPS MCU -> PIC32MX. PIC32MX devices bridge the gap between 8/16-bit PIC microcontrollers and higher-performance ARM Cortex-M parts, offering 32-bit throughput, generous memory (up to 512 KB Flash, 128 KB RAM), USB, CAN, and rich analog peripherals at low power. The PIC32MX230 sub-family is the entry-level Flash variant targeting cost-sensitive consumer, IoT, and industrial applications.
Key features of the PIC32MX230F256B-I/ML include 16-channel 10-bit ADC at 1 Msps, five 16-bit timers/counters, two comparators, a PMP graphics interface, CTMU for mTouch capacitive touch, and an internal 8 MHz oscillator with PLL. The 0.5 mA/MHz typical active current consumption makes it suitable for battery-powered designs. Per Microchip product page, it also provides on-chip temperature measurement capability and supports the MPLAB Harmony and MPLAB X IDE development ecosystem.
The PIC32MX1xx/2xx family uses a 5-stage pipeline Harvard architecture with hardware multiply/divide and a configurable instruction cache for deterministic real-time performance. The 28-QFN package is the smallest outline option, suitable for space-constrained PCB designs where thermal performance is acceptable and reflow profile matches JEDEC J-STD-020.
Typical applications include consumer electronics with graphical LCDs, capacitive touch user interfaces, low-cost USB peripherals, IoT sensor nodes, and industrial control front-ends. The PMP peripheral can drive external graphics controllers or FPGA memory buses directly. The mTouch library and CTMU hardware enable robust touch button and slider implementations on standard PCB pads.
When designing with this MCU, reserve adequate decoupling (100 nF per power pin plus bulk) and follow Microchip's QFN land pattern recommendations for the 6x6 mm ML package. The I-grade operating temperature range is -40C to +85C industrial. Ensure the JTAG/ICD programming interface is accessible for field firmware updates.
This page synthesizes distributor pricing from DigiKey, drop-in alternative analysis across the PIC32MX1xx/2xx family, and application-specific design guidance beyond the manufacturer datasheet content alone.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX230F256B-I/ML — 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 PIC32MX230F256B-I/ML (cùng hình factor và footprint) — khác nhau ở ADC, Package, USB, Timers, Operating Temperature.
PIC32MX230F256B-50I/ML
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX230F256B-V/ML
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX230F256B-I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX170F256B-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX130F256B-I/ML
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC32MX230F256D-I/ML
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC32MX230F064C-I/TL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX230F256B-I/ML Tỷ lệ tối đa & tính chất điện
| Core Processor | MIPS32 M4K |
| Core Size | 32-Bit |
| Maximum CPU Speed | 40 MHz |
| DMIPS Performance | 66 DMIPS |
| Program Memory Type | Flash |
| Program Memory Size | 256 KB (256K x 8) |
| RAM Size | 16 KB |
| Hộp | 28-QFN (6x6 mm) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Active Current Consumption | 0.5 mA/MHz typical |
| ADC | 10-bit, up to 1 Msps, 16 channels |
| Timers | 5 x 16-bit |
| Comparators | 2 |
| I/O Count | 21 (approx, varies with peripheral use) |
| I2S/SPI Modules | 2 |
| Peripheral Pin Select | Yes (PPS) |
| Parallel Master Port | Yes (PMP) |
| mTouch/CTMU | Yes |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC32MX230F256B-I/ML
| Chân 1 | RP9/PMD7/RB9 — Remappable I/O, PMP data 7, I/O port B9 |
| Chân 2 | RP8/PMD6/RB8 — Remappable I/O, PMP data 6, I/O port B8 |
| Chân 3 | RP7/PMD5/RB7 — Remappable I/O, PMP data 5, I/O port B7 |
| Chân 4 | RP6/PMD4/RB6 — Remappable I/O, PMP data 4, I/O port B6 |
| Chân 5 | AVDD — Analog supply voltage |
| Chân 6 | VREF+/CVREF+/AN1 — ADC positive reference / comparator reference |
| Chân 7 | AN2/C1IN-/C2IN- — Analog input 2, comparator 1/2 negative input |
| Chân 8 | AN3/C1IN+/C2IN+ — Analog input 3, comparator 1/2 positive input |
| Chân 9 | AVSS — Analog ground |
| Chân 10 | AN4/C2OUT — Analog input 4, comparator 2 output |
| Chân 11 | TMS/RA0 — JTAG test mode select / I/O port A0 |
| Chân 12 | TCK/RA1 — JTAG test clock / I/O port A1 |
| Chân 13 | TDI/RP5/RA2 — JTAG test data in / remappable I/O port A2 |
| Chân 14 | TDO/RP4/RA3 — JTAG test data out / remappable I/O port A3 |
| Chân 15 | RP3/SCL2/RA4 — Remappable I/O, I2C clock 2, port A4 |
| Chân 16 | RP2/SDA2/RA5 — Remappable I/O, I2C data 2, port A5 |
| Chân 17 | VSS — Digital ground |
| Chân 18 | VDD — Digital supply voltage |
| Chân 19 | OSC1/RC13/RA6 — Crystal oscillator input / I/O port A6 |
| Chân 20 | OSC2/RC14/RA7 — Crystal oscillator output / I/O port A7 |
| Chân 21 | RP0/PMA3/PMALH/RB0 — Remappable I/O, PMP address/data, port B0 |
| Chân 22 | RP1/PMA2/RB1 — Remappable I/O, PMP address 2, port B1 |
| Chân 23 | RP10/PMCS1/RB10 — Remappable I/O, PMP chip select 1, port B10 |
| Chân 24 | RP11/PMCS2/PMA0/RB11 — Remappable I/O, PMP chip select 2, port B11 |
| Chân 25 | RP12/PMA1/RB12 — Remappable I/O, PMP address 1, port B12 |
| Chân 26 | RP13/PMA5/RB13 — Remappable I/O, PMP address 5, port B13 |
| Chân 27 | RP15/PMA9/RB15 — Remappable I/O, PMP address 9, port B15 |
| Chân 28 | VSS/EP — Digital ground / exposed pad (connect to ground) |
Ứng dụng tiêu biểu
PIC32MX230F256B-I/ML phù hợp cho 6 Áp dụngs: Consumer Electronics with Graphical LCD, Capacitive Touch User Interface, IoT Sensor Node Controller, Industrial Control Front-End, USB Audio Device Controller, Home Appliance Control Board.
Consumer Electronics with Graphical LCD
The PIC32MX230F256B-I/ML fits consumer graphical LCD applications through its Parallel Master Port (PMP) peripheral and 256 KB of Flash for graphics firmware and font tables. At 40 MHz it can drive 320x240 QVGA panels with simple UI libraries, while 16 KB SRAM supports double-buffering of small frame regions. The Peripheral Pin Select (PPS) feature lets designers route PMP data and control signals to almost any I/O, simplifying PCB routing on tight layouts. Power consumption of 0.5 mA/MHz (typical) yields approximately 20 mA active at full clock, suitable for USB-powered or wall-wart designs.
Được đề xuất
Capacitive Touch User Interface
The PIC32MX230F256B-I/ML is well suited for capacitive touch user interfaces via its on-chip CTMU (Charge Time Measurement Unit) hardware and Microchip's mTouch library support. The CTMU enables reliable touch button and slider sensing on standard PCB pads without external touch controller ICs. The 1 ns time-measurement resolution supports proximity sensing and moisture-tolerant touch algorithms. The 28-QFN package exposes enough pins for 12-16 touch channels plus LED indicators and a serial interface to a host processor.
Được đề xuất
IoT Sensor Node Controller
For IoT sensor node applications, the PIC32MX230F256B-I/ML provides 256 KB Flash for protocol stacks (MQTT-SN, CoAP, or vendor-specific) and 16 KB SRAM for buffering sensor samples before transmission. The 10-bit ADC at 1 Msps with 16 channels handles multi-sensor analog input including temperature, light, and battery monitoring. Active current of 0.5 mA/MHz (about 20 mA at full speed) plus multiple low-power sleep modes (down to microamp range) enable battery-life optimization. The I2S/SPI modules can interface to MEMS microphones or external RF transceivers.
Được đề xuất
Industrial Control Front-End
The PIC32MX230F256B-I/ML serves as an industrial control front-end thanks to its -40C to +85C industrial temperature range, 10-bit ADC for analog sensor conditioning, and two comparators for hardware threshold detection. The 256 KB Flash supports complex state-machine firmware and Modbus RTU stacks, while 16 KB SRAM buffers incoming sensor data. The 40 MHz MIPS32 M4K core executes deterministic control loops at microsecond resolution. Galvanic isolation plus RS-485 transceivers can be added externally for robust industrial bus communication.
Được đề xuất
USB Audio Device Controller
For USB audio accessory designs, the PIC32MX230F256B-I/ML can serve as the codec controller via its two I2S/SPI modules and 256 KB Flash for USB audio class firmware. The PIC32MX230 family supports USB 2.0 full-speed operation through the on-chip USB peripheral (when present in the specific variant) and integrated 3.3V regulator. The 40 MHz MIPS core delivers sufficient throughput for 16-bit/48 kHz stereo audio paths with low-latency USB feedback. Designers can pair this MCU with external codec ICs such as Microchip's own AK4642 family.
Được đề xuất
Home Appliance Control Board
The PIC32MX230F256B-I/ML fits home appliance control boards (washing machines, dishwashers, microwave ovens) thanks to its 5x16-bit timers for motor PWM and triac control, 10-bit ADC for temperature and current sensing, and 256 KB Flash for state-machine firmware including safety interlocks. The 40 MHz MIPS core handles display refresh for user interfaces plus background motor control loops. The 28-QFN package enables compact board designs that fit behind keypads or LCD panels. PMP peripheral can drive character LCDs directly without external controller.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX230F256B-I/ML — 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 | PIC32MX230F256B-50I/ML | PIC32MX230F256B-V/ML | PIC32MX170F256B-I/ML | PIC32MX130F256B-I/ML | PIC32MX230F256D-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-QFN (6x6 mm) | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same |
| Max CPU Speed | 40 MHz | 50 MHz | 40 MHz | 50 MHz | 50 MHz | 40 MHz |
| Flash | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| USB | No native USB | No native USB | Yes, USB 2.0 FS OTG | Yes, USB 2.0 FS OTG | ||
| mTouch/PMP | Yes (mTouch + PMP) | Yes | No (PIC32MX1xx feature subset) | No mTouch | ||
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C | -40C to +105C (Automotive) | |||
| Price (qty 1, USD) | ~$4.20 | ~$4.20 | ~$4.80 | ~$3.50 |
Bảo phân biệt quan trọng
- Native mTouch/CTMU and PMP on entry-level 256 KB Flash (vsPIC32MX130F256B-I/ML)
- Industrial temperature grade as standard (vsPIC32MX230F256B-50I/ML)
- No USB peripheral - leaves I/O budget for PMP (vsPIC32MX170F256B-I/ML)
Ghi chú thiết kế
The 28-QFN ML package has an exposed die paddle that MUST be soldered to a PCB land of at least equal size, typically connected to a copper ground pour. Per Microchip app note AN235, inadequate thermal via stitching under the EP will cause thermal shutdown at moderate CPU loads. Use a thermal via array (0.3 mm holes on 1.0 mm pitch) connecting the EP to the inner-layer ground plane for optimum heat dissipation. The 6x6 mm land pattern requires QFN IPC-7351 footprint compliance.
Decouple VDD/AVDD with 100 nF X7R ceramic capacitors placed within 3 mm of each power pin, plus a single 4.7 uF bulk capacitor per rail. For ADC accuracy, isolate the analog supply (AVDD) from digital switching noise via a ferrite bead and dedicate a quiet ground pour to AVSS. The internal 8 MHz oscillator with PLL is adequate for most designs, but an external 8 MHz crystal is recommended when USB bit-clock accuracy is needed.
PIC32MX JTAG programming requires PGEC1/PGED1 or PGEC2/PGED2 pin pairs, not available - use ICSP instead. Always connect MCLR through a 10 kohm pull-up to VDD; a 10 nF cap to ground enables in-circuit programming entry. The Peripheral Pin Select (PPS) registers must be unlocked via a specific sequence before reprogramming; failures to remap peripherals are typically PPS lock issues, not hardware faults. Configuration words must be set correctly for clock source and watchdog to avoid boot lockouts.
Estimated: At 40 MHz active CPU, the PIC32MX230F256B-I/ML consumes approximately 20 mA (0.5 mA/MHz typical) from a 3.3V supply, dissipating about 66 mW internally. The QFN-28 package has a theta_JA of approximately 47 C/W on a standard JEDEC 2-layer test PCB, yielding a junction temperature rise of only 3.1 C above ambient. This is well within the -40C to +85C industrial range. No external heatsinking is required for typical MCU loads.
When routing the PMP (Parallel Master Port) bus to an external graphics LCD, keep trace lengths under 50 mm and match impedance to approximately 50 ohms if the bus exceeds 20 MHz toggle rates. Series damping resistors of 22-33 ohms near the MCU can reduce overshoot/ringing. For CTMU/mTouch designs, route touch electrodes as short direct traces to dedicated I/O with guard traces to ground to minimize parasitic coupling and false triggers from adjacent signals.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial -40C to +85C grade. Not AEC-Q100 qualified - choose PIC32MX230F256B-V/ML for automotive applications. The 'I' temperature suffix denotes industrial grade; 'V' suffix denotes automotive grade.
