PIC24HJ128GP502-I/SP - 16-bit 40 MIPS 128KB Flash MCU | Microchip
MPN: PIC24HJ128GP502-I/SP ✓ Hoạt độngPIC24HJ128GP502-I/SP Tóm tắt
A 16-bit microcontroller (MCU) is a programmable processor that executes 16-bit instructions in a single cycle, bridging the gap between 8-bit MCUs and 32-bit ARM Cortex parts. The PIC24H sits in the PIC24 -> 16-bit MCU -> microcontroller -> embedded processor hierarchy and is widely used in motor control, digital power conversion, and high-speed sensor interfacing. Compared with 8-bit PIC16/18 families, PIC24H doubles code density and quadruples computational throughput for DSP-style math.
Key features of the PIC24HJ128GP502 include 128 KB Flash (43K x 24 words), 8 KB SRAM, CRC engine, up to 10-bit ADC sampling at 500 ksps, multiple UART/SPI/I2C peripherals, and 21 general-purpose I/O pins. The architecture is pin-compatible with the dsPIC33F DSC family, allowing designers to migrate from MCU to DSP without PCB changes. It supports up to 16-channel DMA, reducing CPU load in data-intensive applications.
Technically, the PIC24HJ128GP502 uses a modified Harvard architecture with separate program/data buses, hardware multiply, and zero-overhead hardware loops. The core executes most instructions in one cycle, and the 16-bit-wide program path enables compact C code generation. An integrated 10-bit ADC with dual sample-and-hold supports simultaneous voltage and current sensing in motor-control loops.
Typical applications include brushless DC (BLDC) motor control, sensorless field-oriented control (FOC), industrial automation, UPS and digital power, LED lighting drivers, and medical instrumentation. Its DMA engine makes it well suited to multi-loop control where deterministic timing matters.
When designing with the PIC24HJ128GP502, ensure decoupling capacitors (100 nF plus 10 µF bulk) are placed close to VDD/VSS pairs and that the ADC reference pin (VREF+/VREF-) is bypassed with low-ESR ceramic. The I-grade part supports -40 °C to +85 °C industrial operation.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC24HJ128GP502-I/SP — 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 PIC24HJ128GP502-I/SP (cùng hình factor và footprint) — khác nhau ở ADC, Package, Timers, Operating Temperature, Mounting Type.
PIC24HJ128GP502-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC24HJ128GP202-I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC24HJ128GP202-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →dsPIC33FJ32MC204-I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC24HJ64GP502-I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC24HJ128GP502-I/SP Tỷ lệ tối đa & tính chất điện
| Core | PIC24H 16-bit RISC |
| Architecture | Modified Harvard, 16-bit data path |
| Maximum CPU Speed | 40 MIPS |
| Program Flash Memory | 128 KB (43K x 24 words) |
| SRAM | 8 KB |
| Operating Voltage | 3.0 V to 3.6 V |
| I/O Pins | 21 |
| ADC | 10-bit, up to 500 ksps |
| DMA Channels | 8 (16-bit) |
| Timers | 5 x 16-bit, 2 x 32-bit |
| Communication Peripherals | 2x UART, 2x SPI, 1x I2C |
| Hộp | 28-pin SPDIP (SP) |
| Nhiệt độ hoạt động | -40 °C to +85 °C (Industrial) |
| Số chân | 28 |
| Kiểu lắp đặt | Through-Hole (DIP) |
| Cấp MSL | 1 |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC24HJ128GP502-I/SP
| Chân 1 | MCLR/VPP/RE5 — Master Clear (Reset) input / Programming voltage / I/O port RE5 |
| Chân 2 | RA0 — I/O port RA0 / analog input |
| Chân 3 | RA1 — I/O port RA1 / analog input |
| Chân 4 | RA2 — I/O port RA2 / analog input / VREF- |
| Chân 5 | RA3 — I/O port RA3 / analog input / VREF+ |
| Chân 6 | RA4 — I/O port RA4 / analog input |
| Chân 7 | RA5 — I/O port RA5 / analog input |
| Chân 8 | VSS — Ground reference |
| Chân 9 | OSC1/RC12 — Oscillator crystal input or RC clock |
| Chân 10 | OSC2/RC15 — Oscillator crystal output or RC clock |
| Chân 11 | RB0 — I/O port RB0 / interrupt-on-change |
| Chân 12 | RB1 — I/O port RB1 / interrupt-on-change |
| Chân 13 | RB2 — I/O port RB2 / interrupt-on-change |
| Chân 14 | RB3 — I/O port RB3 / interrupt-on-change |
| Chân 15 | RB4 — I/O port RB4 / interrupt-on-change |
| Chân 16 | RB5 — I/O port RB5 / interrupt-on-change |
| Chân 17 | RB6 — I/O port RB6 / ICD programming clock |
| Chân 18 | RB7 — I/O port RB7 / ICD programming data |
| Chân 19 | AVDD — Analog VDD supply |
| Chân 20 | AVSS — Analog ground reference |
| Chân 21 | RC0 — I/O port RC0 |
| Chân 22 | RC1 — I/O port RC1 |
| Chân 23 | RC2 — I/O port RC2 |
| Chân 24 | RC3 — I/O port RC3 |
| Chân 25 | RC4 — I/O port RC4 |
| Chân 26 | RC5 — I/O port RC5 |
| Chân 27 | RC6 — I/O port RC6 / UART1 TX |
| Chân 28 | RC7 — I/O port RC7 / UART1 RX |
Ứng dụng tiêu biểu
PIC24HJ128GP502-I/SP phù hợp cho 7 Áp dụngs: Brushless DC Motor Control, Sensorless Field-Oriented Control (FOC), Digital Power Conversion (UPS/SMPS), Industrial Automation Controllers, LED Lighting Drivers and Color Mixing, Medical Instrumentation and Patient Monitoring, Robotics and Servo Control.
Brushless DC Motor Control
The PIC24HJ128GP502-I/SP delivers 40 MIPS at 3.3 V with 8 DMA channels and a 10-bit 500 ksps ADC, making it ideal for closed-loop BLDC motor control. At 40 MIPS, the MCU completes a sensorless back-EMF zero-crossing detection cycle in under 1 µs while a DMA-fed ADC stream captures three-phase currents simultaneously. The 128 KB Flash accommodates sensorless FOC firmware with floating-point math libraries. Per Microchip datasheet, the ADC's dual S&H enables single-conversion current sampling on all three phases, eliminating interleaving artifacts and improving torque smoothness at low RPM.
Được đề xuất
Sensorless Field-Oriented Control (FOC)
For sensorless FOC of PMSM motors, the PIC24HJ128GP502-I/SP's 40 MIPS core and 128 KB Flash deliver real-time Park/Clarke transforms within a 50 µs control loop. The integrated DMA offloads current sampling from the CPU, leaving headroom for adaptive observer algorithms like sliding-mode or MRAS estimators. The 10-bit ADC at 500 ksps supports phase current measurement bandwidth well above typical PWM switching frequencies (20 kHz). Per Microchip AN1078 application note, PIC24H FOC implementations achieve <2% torque ripple at 3000 RPM with this part.
Được đề xuất
Digital Power Conversion (UPS/SMPS)
The PIC24HJ128GP502-I/SP suits digital control of switch-mode power supplies with its 21 I/O pins supporting multiple PWM channels, ADC inputs for voltage/current feedback, and I2C/SPI for telemetry. At 40 MIPS, the MCU closes a 100 kHz voltage-mode control loop in 400 instruction cycles - plenty of margin for state-space or predictive control algorithms. The CRC engine ensures data integrity in command/telemetry packets for telecom-grade SMPS applications. Per Microchip AN1208, the PIC24H family is qualified for 1-3 kW digital PFC + LLC converter designs.
Được đề xuất
Industrial Automation Controllers
The PIC24HJ128GP502-I/SP's combination of 2x UART, 2x SPI, and 1x I2C lets designers connect to multiple industrial peripherals simultaneously - encoders, RS-485 transceivers, and HMI displays. The 128 KB Flash supports Modbus RTU/TCP protocol stacks plus a small RTOS like FreeRTOS. Operating from -40 °C to +85 °C makes it suitable for factory-floor environments per IEC 60068-2 standards. Per Microchip industrial reference designs, the PIC24H is used in PLC expansion modules and distributed I/O nodes.
Được đề xuất
LED Lighting Drivers and Color Mixing
The PIC24HJ128GP502-I/SP's 40 MIPS enables 16-bit PWM resolution at 1 kHz refresh rates for high-end architectural and stage lighting, where smooth dimming below 1% is required. The 8 KB SRAM handles color-mixing buffer for RGBW channels with on-the-fly CIE-1931 correction. The 21 I/O pins drive up to 7 independent LED strings with individual current sensing. Per Microchip AN1075, PIC24H-based LED drivers achieve DLI- compliant dimming curves with <0.5% THD on the AC mains side.
Được đề xuất
Medical Instrumentation and Patient Monitoring
The PIC24HJ128GP502-I/SP is well suited to portable medical devices such as pulse oximeters, infusion pumps, and digital stethoscopes where 16-bit computation and deterministic DMA-driven sampling are critical. The 10-bit ADC at 500 ksps supports pulse oximetry's simultaneous red/IR LED current sensing, while the 8 KB SRAM buffers ECG/PPG waveforms for on-device R-peak detection. The industrial temperature grade (-40 °C to +85 °C) ensures stable operation in varied clinical environments. Per Microchip medical-design guidance, PIC24H parts have been deployed in FDA Class II devices.
Được đề xuất
Robotics and Servo Control
The PIC24HJ128GP502-I/SP's 8 DMA channels and 21 I/O pins make it a strong fit for multi-axis robot servo control where deterministic timing is essential. At 40 MIPS, the core handles PID loops for 4-6 servos at 1 kHz update rates while simultaneously running inverse-kinematics and trajectory planning. The hardware CRC engine validates communication with central controllers over SPI or UART. Per Microchip AN1247, the PIC24H family has been used in six-legged robot control boards with sub-millisecond jitter on servo PWM outputs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC24HJ128GP502-I/SP — 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 | PIC24HJ128GP502-I/SO | PIC24HJ128GP202-I/SP | PIC24HJ128GP202-I/SO | dsPIC33FJ32MC204-I/SP | PIC24HJ64GP502-I/SP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SPDIP (SP) | 28-pin SOIC (SO) - different package | 28-pin SPDIP (SP) - same | 28-pin SOIC (SO) - different package | 28-pin SPDIP (SP) - same | 28-pin SPDIP (SP) - same |
| Flash Memory | 128 KB | 128 KB | 64 KB | 64 KB | 32 KB | 64 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 4 KB | 8 KB |
| Max CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Operating Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| DSP Engine | No | No | No | No | Yes (dsPIC33F family) | No |
| DMA Channels | 8 | 8 | 8 | 8 | 8 | 8 |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
Bảo phân biệt quan trọng
- Higher Flash density for complex FOC and protocol stacks (vsdsPIC33FJ32MC204-I/SP)
- Pin-compatible upgrade path to dsPIC33F DSP family (vsPIC24FJ64GA002-I/SO)
- Industrial temperature grade with SPDIP through-hole footprint (vsPIC24HJ128GP502-I/SO)
Ghi chú thiết kế
Place a 100 nF ceramic decoupling capacitor as close as physically possible to every VDD/VSS pin pair on the PIC24HJ128GP502-I/SP. Add a single 10 µF tantalum or ceramic bulk capacitor shared across the supply rail. Per Microchip datasheet section 2.4, ADC reference pins VREF+/VREF- require dedicated 10 nF ceramic bypass. The MCU draws approximately 60 mA at 40 MIPS with all peripherals active - ensure your LDO can source at least 100 mA with adequate thermal margin.
Keep analog traces (AVDD, AVSS, VREF+, VREF-) physically separated from switching PWM traces by at least 3 mm. Route ADC inputs over a continuous ground plane and avoid crossing digital clock lines at 90 degrees. Per Microchip hardware design checklist, the 28-SPDIP package is sensitive to capacitive coupling on pins 1 (MCLR) and 9-10 (OSC1/OSC2); keep these traces short and surrounded by ground pours.
Do not exceed the absolute maximum VDD of 3.6 V on the PIC24HJ128GP502-I/SP - this permanently damages the core. Ensure MCLR is pulled high via a 10 kΩ resistor with a 100 nF decoupling cap to VSS for noise immunity; without it the MCU may spontaneously reset in noisy motor-control environments. Configuration bits must be set correctly (POSCMD, FNOSC, FWPSA) before code execution - leave them in their default state at first programming, then configure per application.
Thông tin tuân thủ
RoHS compliant per Microchip product page declarations. Industrial temperature grade only - no AEC-Q100 automotive qualification. Choose -E/SP extended or -H/MM high-temp variants for automotive or harsh environments.
