PIC24HJ32GP302-E/SO - 16-bit 40 MIPS MCU, 32KB Flash, 28-SOIC | Microchip
料号： PIC24HJ32GP302-E/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.1 | $4.10 |
| 10 | $3.68 | $36.80 |
| 100 | $3.1 | $310.00 |
| 500 | $2.61 | $1,305.00 |
| 1,000 | $2.18 | $2,180.00 |
PIC24HJ32GP302-E/SO 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data memory, and a rich set of on-chip peripherals such as timers, ADC modules, communication controllers, and I/O pins. Within the broader semiconductor taxonomy, an MCU belongs to: microcontroller -> embedded processor -> digital IC -> semiconductor. The PIC24H family targets high-speed control and DSP-like signal processing loops at low power, competing in the industrial and automotive control markets.
Key features include a 16-bit modified Harvard architecture CPU capable of 40 MIPS throughput at 40 MHz, three 16-bit timers/counters that can be paired to form one 32-bit timer, two output-capture modules, hardware DMA, and the proprietary nanoWatt power-management technology. The device provides 21 general-purpose I/O pins, multiple serial interfaces (UART, SPI, I2C), a 12-bit ADC, and an RTCC for real-time clock duties.
The PIC24HJ32GP302-E/SO is pin-compatible with the dsPIC33F family, allowing firmware migration between motor-control and general-purpose variants on the same PCB. Its 40 MIPS performance and integrated DMA make it suited to closed-loop control and repetitive signal-processing tasks, while the nanoWatt technology keeps idle consumption low for battery-backed applications.
Typical applications include industrial motor control, switched-mode power supply (SMPS) digital control, automotive body and sensor conditioning, sensor signal processing, and consumer devices requiring deterministic real-time response. Designers also use the part for LED lighting controllers and small medical instrumentation.
When designing with this MCU, reserve one or two I/O pins for in-circuit serial programming (ICSP) and ensure decoupling of VDD/VCAP/AVDD per the datasheet, because the internal regulator requires a low-ESR bulk capacitor on VCAP. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet.
This page synthesizes distributor pricing, pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替换替代料： PIC24HJ32GP302-E/SO ——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： PIC24HJ32GP302-E/SO （相同外形与封装尺寸） ——差异在于 Operating Temperature, Package, ADC, Core Architecture, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
PIC24HJ32GP302-I/SO
✅ 直接替换📋 参考替代料（不在目录中）
PIC24HJ32GP302-H/SO
✅ 直接替换📋 参考替代料（不在目录中）
PIC24HJ32GP304-E/SO
✅ 直接替换📋 参考替代料（不在目录中）
dsPIC33FJ32GP302-I/SO
✅ 直接替换📋 参考替代料（不在目录中）
PIC24HJ32GP202-E/SO
✅ 直接替换📋 参考替代料（不在目录中）
PIC24HJ32GP302-E/SO 最大额定值与电气特性
| Core | PIC 16-bit modified Harvard |
| CPU Speed | 40 MIPS at 40 MHz |
| Program Memory (Flash) | 32 KB (11K x 24) |
| RAM | 2 KB |
| Supply Voltage (VDD) | 3.0 V to 3.6 V |
| I/O Pins | 21 |
| Timers | Three 16-bit (pairable to one 32-bit) |
| Output Compare | 2 modules |
| DMA Channels | Yes (8-channel hardware DMA) |
| ADC | 10/12-bit ADC, up to 10 channels |
| Communication | UART, SPI, I2C |
| 工作温度 | -40C to +125C (industrial) |
| 封装 | 28-pin SOIC (Wide, 0.300") |
| Pin-compatible Family | dsPIC33F family |
| Power Technology | nanoWatt power management |
PIC24HJ32GP302-E/SO 引脚配置
| 引脚 1 | MCLR — Master Clear (reset) input, active low; pull-up to VDD |
| 引脚 2 | RA0 — Port A bit 0 / AN0 analog input |
| 引脚 3 | RA1 — Port A bit 1 / AN1 analog input |
| 引脚 4 | RA2 — Port A bit 2 / AN2 analog input / VREF- |
| 引脚 5 | RA3 — Port A bit 3 / AN3 / VREF+ |
| 引脚 6 | RA4 — Port A bit 4 |
| 引脚 7 | VSS — Ground reference |
| 引脚 8 | VDD — Positive supply, 3.0-3.6V |
| 引脚 9 | OSC1 — Crystal oscillator input |
| 引脚 10 | OSC2 — Crystal oscillator output |
| 引脚 11 | RB0 — Port B bit 0 / PGED1 programming |
| 引脚 12 | RB1 — Port B bit 1 / PGEC1 programming |
| 引脚 13 | RB2 — Port B bit 2 |
| 引脚 14 | RB3 — Port B bit 3 |
| 引脚 15 | RB4 — Port B bit 4 |
| 引脚 16 | RB5 — Port B bit 5 |
| 引脚 17 | RB6 — Port B bit 6 / PGEC2 |
| 引脚 18 | RB7 — Port B bit 7 / PGED2 |
| 引脚 19 | VDD — Positive supply, 3.0-3.6V |
| 引脚 20 | VCAP — Internal 1.8V regulator output, connect 10uF low-ESR cap |
| 引脚 21 | RC0 — Port C bit 0 |
| 引脚 22 | RC1 — Port C bit 1 |
| 引脚 23 | RC2 — Port C bit 2 |
| 引脚 24 | RC3 — Port C bit 3 |
| 引脚 25 | RC4 — Port C bit 4 |
| 引脚 26 | RC5 — Port C bit 5 |
| 引脚 27 | VSS — Ground reference |
| 引脚 28 | AVDD — Analog positive supply |
典型应用
PIC24HJ32GP302-E/SO 适用于 7 应用s: Industrial Motor Control, Switch-Mode Power Supply (SMPS) Digital Control, Automotive Body Electronics and Sensor Conditioning, Sensor Signal Processing and Data Acquisition, LED Lighting Controllers, Consumer Medical and Fitness Devices, Industrial Sensors and IoT Edge Nodes.
Industrial Motor Control
The PIC24HJ32GP302-E/SO suits BLDC, stepper, and brushed DC motor control with its 40 MIPS core, three 16-bit timers, and two output-compare modules. The hardware DMA offloads repetitive peripheral transfers, freeing the CPU for closed-loop PID calculations. With 21 I/O pins, the device can drive half-bridge FET drivers and read quadrature encoder feedback directly. The extended -40C to +125C operating range supports industrial cabinet environments. Pair with the IR2104 gate driver and a 24V bus for sub-100W motor control boards used in pumps, fans, and small CNC axes.
推荐
Switch-Mode Power Supply (SMPS) Digital Control
The PIC24HJ32GP302-E/SO's 40 MIPS throughput and 12-bit ADC enable digital control loops for SMPS, including peak current-mode control, PFC, and LLC topologies. The high-speed ADC trigger from a timer minimizes sample-to-PWM delay, critical for stable control loops above 100 kHz switching frequency. Hardware DMA streams ADC samples into RAM without CPU intervention, leaving bandwidth for control-law computation. The nanoWatt modes let the part shut down peripheral blocks between switching cycles. Engineers typically pair the MCU with a UCC28950 controller for a fully digital power supply design.
推荐
Automotive Body Electronics and Sensor Conditioning
The PIC24HJ32GP302-E/SO is suited to automotive body modules - HVAC blend doors, seat controllers, lighting modules, and sensor signal conditioning - thanks to its extended -40C to +125C range and automotive-grade qualification. The 12-bit ADC and DMA stream sensor data efficiently, while the UART/SPI/I2C peripherals talk to LIN transceivers and body controllers. Note that for AEC-Q100 qualification specifically, select the dsPIC33F variant or PIC24HJ32GP302 automotive part number. The 32 KB Flash provides ample space for LIN stacks and diagnostics.
推荐
Sensor Signal Processing and Data Acquisition
For sensor signal processing applications - thermocouples, RTDs, load cells, and instrumentation front-ends - the PIC24HJ32GP302-E/SO offers 40 MIPS with hardware DMA to handle high-throughput ADC pipelines. The 10/12-bit ADC with up to 10 channels captures multiple sensors in parallel, while the hardware MAC accelerates digital filtering (FIR, IIR) on the same core. With 2 KB SRAM, ring buffers for streaming samples fit comfortably. The 28-SOIC wide-body package aids hand-prototyping on a breadboard or perfboard.
推荐
LED Lighting Controllers
The PIC24HJ32GP302-E/SO drives intelligent LED lighting products - architectural lighting, hidden drivers, and stage lighting - by leveraging the output-compare PWM generators. Three 16-bit timers (pairable to 32-bit) generate multiple PWM channels for RGBW color mixing and dimming with high resolution. The 40 MIPS core handles DMX-512, DALI, or 0-10 V dimming protocol stacks in firmware. With nanoWatt power-saving modes, the MCU consumes microamps in standby, meeting Energy Star idle limits for commercial lighting.
推荐
Consumer Medical and Fitness Devices
The PIC24HJ32GP302-E/SO suits consumer medical and fitness devices - blood pressure monitors, glucose meters, pulse oximeters, and activity trackers - given its low power consumption and DSP-class throughput. The 12-bit ADC captures PPG, ECG, and bio-impedance signals, while the hardware DMA streams samples into RAM for FFT and filtering. With 32 KB Flash and 2 KB SRAM, the part supports small RTOS configurations or bare-metal firmware. The 28-SOIC wide-body package eases hand-assembly for low-volume medical device production runs.
推荐
Industrial Sensors and IoT Edge Nodes
The PIC24HJ32GP302-E/SO is well-suited to industrial sensor and IoT edge node applications requiring deterministic real-time response and fieldbus connectivity. With UART, SPI, and I2C peripherals, the MCU talks to MODBUS, RS-485 transceivers, and Wi-Fi/BLE modules. The hardware DMA offloads data movement when buffering sensor bursts, while nanoWatt modes extend battery life in wireless transmitters. The -40C to +125C extended operating range covers outdoor and factory-floor deployments. Pair with the WINC1500 Wi-Fi module or RN4871 BLE module for connected sensor designs.
推荐
推荐产品汇总
工程参考数据： PIC24HJ32GP302-E/SO ——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 | PIC24HJ32GP302-I/SO | PIC24HJ32GP302-H/SO | PIC24HJ32GP304-E/SO | dsPIC33FJ32GP302-I/SO | PIC24HJ32GP202-E/SO | PIC24HJ32GP204-E/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (Wide, 0.300") | 28-SOIC (Wide, 0.300") - same | 28-SOIC (Wide, 0.300") - same | 28-SOIC (Wide, 0.300") - same | 28-SOIC (Wide, 0.300") - same | 28-SOIC (Wide, 0.300") - same | 44-pin TQFP - different |
| Flash Memory | 32 KB | 32 KB | 32 KB | 48 KB (+50%) | 32 KB | 32 KB | 32 KB |
| CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS + DSP engine | 30 MIPS (-25%) | 40 MIPS |
| DMA | Yes (8-channel) | Yes | Yes | Yes | Yes | No | Yes |
| Operating Temperature | -40C to +125C | -40C to +85C | 0C to +70C | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +125C |
| DSP Engine | No | No | No | No | Yes (single-cycle MAC) | No | No |
| I/O Pins | 21 | 21 | 21 | 21 | 21 | 21 | 35 (+67%) |
关键差异点
- Hardware DMA offloads peripheral transfers （对比 PIC24HJ32GP202-E/SO)
- Pin-compatible upgrade path to DSP capability （对比 dsPIC33FJ32GP302-I/SO)
- Extended temperature range for harsh environments （对比 PIC24HJ32GP302-I/SO)
- Higher Flash density in the same footprint （对比 PIC24HJ32GP304-E/SO)
设计说明
The PIC24HJ32GP302-E/SO uses an internal 1.8V core regulator that requires a low-ESR bulk capacitor (typically 10uF ceramic) on the VCAP pin. Per Microchip datasheet DS70291G, place the VCAP cap within 6 mm of the pin and use X5R/X7R dielectric. Both VDD pins (8 and 19) must be decoupled with 0.1uF and 10uF capacitors in parallel. AVDD requires its own 0.1uF + 10uF decoupling network; tying AVDD to VDD via ferrite beads reduces ADC noise. Inadequate VCAP capacitance results in regulator oscillation that looks like RAM corruption.
Place the ICSP programming pins (PGED1/RB0, PGEC1/RB1, MCLR) on accessible test points or header pins so firmware can be programmed without removing the MCU from the board. Keep the crystal traces short (<10 mm) and guard them with a ground pour on both sides to reduce EMI pickup. Route analog inputs (AN0-AN9) away from switching nodes and PWM outputs to minimize ADC crosstalk; the datasheet specifies a 50 dB SINAD under typical board layouts. Add a ground-stitching via fence along the analog/digital partition.
Common pitfalls: (1) Forgetting to configure the JTAGEN bit to disable JTAG and free RB6/RB7 for GPIO - leaving JTAG enabled by default makes those pins unusable as digital I/O. (2) Setting the ADC clock source faster than the datasheet limit (typically 40 MHz max for 12-bit mode) - this causes ADC noise to exceed spec by 3-5 LSB. (3) Enabling the DMA without clearing the DMA interrupt flag - causes repeated interrupts that lock the CPU. (4) Bootloading code that overwrites the configuration bits without preserving the WDT, BOR, and PWRTE settings.
合规信息
RoHS compliant per Microchip product page. Lead-free and halogen-free per Microchip material declaration. Not AEC-Q100 qualified as the PIC24HJ32GP302-E/SO part number; the automotive-grade equivalent is dsPIC33FJ32GP302 or PIC24HJ32GP302 with automotive part number suffix.
