PIC24HJ32GP304-I/PT - 16-bit 40MHz 32KB Flash MCU | Microchip
料号： PIC24HJ32GP304-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.42 | $7.42 |
| 10 | $6.68 | $66.80 |
| 100 | $5.95 | $595.00 |
| 500 | $5.21 | $2,605.00 |
| 1,000 | $4.49 | $4,490.00 |
PIC24HJ32GP304-I/PT 概述
A 16-bit microcontroller is a single-chip computer that processes data 16 bits at a time, sitting in the hierarchy between 8-bit MCUs and 32-bit ARM-class cores. The PIC24H architecture is a 16-bit modified Harvard RISC design with a 16-bit data path and 24-bit instruction word, optimized for deterministic real-time control. Within the broader taxonomy, PIC24H belongs to the 16-bit MCU tier of the microcontroller semiconductor category.
Key features include hardware DMA that offloads data movement from the CPU, a 12-bit ADC with 500 ksps throughput, dual analog comparators, and a charge time measurement unit (CTMU) for capacitive touch or accurate timing. Communication peripherals cover UART, SPI, I2C, and ECAN, providing flexibility for both sensor interfaces and industrial fieldbus integration. The CTMU and DMA pair especially well for low-jitter sensor sampling.
Typical applications include industrial automation, motor control (BLDC, PMSM, and stepper), intelligent sensor systems, building automation HVAC controllers, and digital power conversion control loops. The wide peripheral set and DMA engine allow the CPU to focus on control-loop math rather than data shuffling.
When designing with the PIC24HJ32GP304-I/PT, ensure that the 3.3 V rail is well-regulated and that decoupling capacitors sit close to the VDD/VSS pairs. Use the ECAN module for CAN-bus nodes, the CTMU for capacitive touch sensing, and the DMA controller for high-throughput ADC-to-memory transfers.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design guidance not found in the manufacturer datasheet, providing a compact, citation-ready reference for engineering selection.
直接替换替代料： PIC24HJ32GP304-I/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： PIC24HJ32GP304-I/PT （相同外形与封装尺寸） ——差异在于 Timers, Package, ADC, Program Memory (Flash), Core.
快速对比工具——选择替代料号进行并排对比：
PIC24HJ32GP304T-I/PT
✅ 直接替换✓ 有现货
$4.32 / 个
查看数据手册 →PIC24HJ32GP304-I/ML
✅ 直接替换✓ 有现货
$2.74 / 个
查看数据手册 →PIC24HJ128GP504-I/PT
✅ 直接替换✓ 有现货
$5.07 / 个
查看数据手册 →PIC24HJ128GP504T-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.49 / 个
查看数据手册 →PIC24HJ256GP206AT-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$6.1 / 个
查看数据手册 →PIC24HJ32GP304-I/PT 最大额定值与电气特性
| Core Architecture | 16-bit PIC24H (modified Harvard RISC) |
| Program Memory (Flash) | 32 KB (11K x 24) |
| Data Memory (RAM) | 4 KB |
| Maximum CPU Speed | 40 MIPS at 40 MHz |
| Supply Voltage (VDD) | 3.0 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 |
| Digital I/O Pins | 21 |
| ADC | 12-bit, up to 16 channels, 500 ksps |
| Timers | Three 16-bit (pairable to one 32-bit) |
| Output Compare Modules | 2 |
| DMA Channels | 8 |
| Communication Peripherals | UART, SPI, I2C, ECAN |
| Analog Comparators | 2 |
| CTMU | Yes (Charge Time Measurement Unit) |
| RoHS 状态 | Compliant |
| MSL 等级 | 3 (168 hours) |
PIC24HJ32GP304-I/PT 引脚配置
| 引脚 1 | RP15/CN15V15/PMD15 — Remappable I/O / Change Notification / Enhanced PWM |
| 引脚 2 | RP14/CN14V14/PMD14 — Remappable I/O / Change Notification / Enhanced PWM |
| 引脚 3 | RP13/PA15 — Remappable I/O / Port A |
| 引脚 4 | RP12/PA14 — Remappable I/O / Port A |
| 引脚 5 | RP11/PA13 — Remappable I/O / Port A |
| 引脚 6 | RP10/PA12 — Remappable I/O / Port A |
| 引脚 7 | MCLR — Master Clear (reset, active-low) |
| 引脚 8 | RP9/PA11 — Remappable I/O / Port A |
| 引脚 9 | RP8/PA10 — Remappable I/O / Port A |
| 引脚 10 | VSS — Ground reference |
| 引脚 11 | VDD — Positive supply (3.3V) |
| 引脚 12 | RP7/OC5V3 — Remappable I/O / Output Compare 5 |
| 引脚 13 | RP6/OC4V4 — Remappable I/O / Output Compare 4 |
| 引脚 14 | RP5/PA9 — Remappable I/O / Port A |
| 引脚 15 | RP4/PA8 — Remappable I/O / Port A |
| 引脚 16 | RP3/PA7 — Remappable I/O / Port A |
| 引脚 17 | RP2/PA6 — Remappable I/O / Port A |
| 引脚 18 | RP1/OC3V3/INT3 — Remappable I/O / Output Compare 3 / External Interrupt 3 |
| 引脚 19 | RP0/OC2V2/INT2 — Remappable I/O / Output Compare 2 / External Interrupt 2 |
| 引脚 20 | AN0/VREF+/PGA1 — Analog input 0 / ADC VREF+ / PGA positive |
| 引脚 21 | AN1/VREF-/PGA1 — Analog input 1 / ADC VREF- / PGA negative |
| 引脚 22 | AN2/PGAC1 — Analog input 2 / PGA compensation |
| 引脚 23 | AN3 — Analog input 3 |
| 引脚 24 | AN4 — Analog input 4 |
| 引脚 25 | AN5 — Analog input 5 |
| 引脚 26 | AN6 — Analog input 6 |
| 引脚 27 | VSS — Ground reference |
| 引脚 28 | VDD — Positive supply (3.3V) |
| 引脚 29 | AN7 — Analog input 7 |
| 引脚 30 | AN8 — Analog input 8 |
| 引脚 31 | AN9 — Analog input 9 |
| 引脚 32 | AN10/CVREF — Analog input 10 / Comparator Voltage Reference |
| 引脚 33 | AN11 — Analog input 11 |
| 引脚 34 | AN12 — Analog input 12 |
| 引脚 35 | AN13 — Analog input 13 |
| 引脚 36 | AN14 — Analog input 14 |
| 引脚 37 | AN15 — Analog input 15 |
| 引脚 38 | RP16/OC8V8 — Remappable I/O / Output Compare 8 |
| 引脚 39 | OSCI/CLKI — Oscillator crystal input / external clock in |
| 引脚 40 | OSCO/CLKO — Oscillator crystal output / system clock out |
| 引脚 41 | RP17/OC9V9 — Remappable I/O / Output Compare 9 |
| 引脚 42 | PGD/EMUD — Programming data / ICD EMU data |
| 引脚 43 | PGC/EMUC — Programming clock / ICD EMU clock |
| 引脚 44 | AVSS — Analog ground reference |
典型应用
PIC24HJ32GP304-I/PT 适用于 7 应用s: Industrial Motor Control, Digital Power Conversion Control, Capacitive Touch Sensing, Industrial Sensor Hubs, Building Automation HVAC, Automotive Body Electronics, Uninterruptible Power Supply Controller.
Industrial Motor Control
The PIC24HJ32GP304-I/PT's 40 MIPS throughput and three 16-bit timers (pairable to one 32-bit) make it well-suited for sensorless BLDC and PMSM motor control loops. The Output Compare modules drive PWM signals up to 40 kHz at center-aligned mode with dead-band control, while the 12-bit ADC at 500 ksps samples phase currents with low latency. The 8-channel DMA engine transfers ADC samples to RAM without CPU intervention, freeing the core to run field-oriented control math. Per the PIC24H datasheet, the CTMU can be used for BEMF zero-cross detection on low-cost sensorless drives.
推荐
Digital Power Conversion Control
The 40 MIPS performance and 12-bit ADC make the PIC24HJ32GP304-I/PT a cost-effective controller for digital PFC, full-bridge, and LLC resonant converters. The Output Compare modules generate high-resolution PWM at up to 1 ns edge placement in PWM mode, enabling tight control of duty cycle for power factor correction. The DMA channels stream ADC results into circular buffers while the CPU executes the voltage-mode or current-mode control law. The 32 KB Flash is sufficient for state-space and adaptive digital control algorithms in sub-kW converters.
推荐
Capacitive Touch Sensing
The PIC24HJ32GP304-I/PT integrates the Charge Time Measurement Unit (CTMU), which provides a constant-current source and timing measurement for capacitive touch buttons, sliders, and proximity sensors. Combined with the 12-bit ADC and DMA, the MCU can scan 8-16 touch channels at high update rates while running touch classification algorithms in firmware. The 4 KB RAM is sufficient for gesture state machines and debounce buffers. The 21 I/O pins allow the GPIO to drive LED feedback and mechanical button override alongside the touch electrodes.
推荐
Industrial Sensor Hubs
The combination of UART, SPI, I2C, and ECAN peripherals makes the PIC24HJ32GP304-I/PT an effective industrial sensor hub that aggregates data from SPI sensors and forwards it over CAN to a master controller. The DMA engine handles burst transfers from sensor FIFOs without CPU load, while the 12-bit ADC monitors analog process variables such as temperature or pressure. The 32 KB Flash supports MODBUS or CANopen protocol stacks. The 44-TQFP package provides ample I/O for multiple sensor interfaces plus a debugging UART.
推荐
Building Automation HVAC
The PIC24HJ32GP304-I/PT's mix of analog and digital peripherals suits it for HVAC damper and valve controllers, fan-speed regulators, and building-automation node endpoints. The 12-bit ADC reads temperature, humidity, and pressure sensor outputs, while the PWM modules drive TRIAC optocouplers for AC load switching. ECAN support allows the node to integrate into BACnet or CANopen building-automation trunks. The 32 KB Flash accommodates control-loop firmware plus scheduling logic for setpoint management.
推荐
Automotive Body Electronics
Although the I-grade variant is industrial-temperature rated (-40 C to +85 C), the PIC24HJ32GP304-I/PT architecture and ECAN peripheral make it a fit for non-safety automotive body modules such as lighting controllers, mirror adjusters, and accessory multiplexers. The 12-bit ADC reads switch contact inputs and Hall-effect sensors, while the PWM outputs drive LED current sinks. CAN connectivity integrates the module into the vehicle body network. For AEC-Q100 qualified equivalents, see the PIC24HJ32GP304-E/PT or Q-Grade parts from Microchip.
推荐
Uninterruptible Power Supply Controller
The PIC24HJ32GP304-I/PT's 12-bit ADC at 500 ksps and 40 MIPS performance enable real-time monitoring of battery voltage, load current, and inverter output in small UPS systems. The Output Compare modules generate 50/60 Hz PWM for the inverter stage, while the DMA controller streams ADC samples into the control loop buffer. ECAN or UART can report telemetry to a host processor or display panel. The 32 KB Flash holds inverter control firmware plus state-of-charge estimation logic for lead-acid or Li-ion battery packs.
推荐
推荐产品汇总
工程参考数据： PIC24HJ32GP304-I/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 | PIC24HJ32GP304T-I/PT | PIC24HJ32GP304-I/ML | PIC24HJ128GP504-I/PT | PIC24HJ128GP504T-I/PT | PIC24HJ256GP206AT-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-44 (10x10 mm) | TQFP-44 (10x10 mm) - same | QFN-44 - same silicon, different footprint | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | PIC24H 16-bit | PIC24H 16-bit | PIC24H 16-bit | PIC24H 16-bit | PIC24H 16-bit | PIC24H 16-bit |
| Flash Memory | 32 KB | 32 KB | 32 KB | 128 KB | 128 KB | 256 KB |
| RAM | 4 KB | 4 KB | 4 KB | 8 KB | 8 KB | 16 KB |
| Max CPU Speed | 40 MIPS / 40 MHz | 40 MIPS / 40 MHz | 40 MIPS / 40 MHz | 40 MIPS / 40 MHz | 40 MIPS / 40 MHz | 40 MIPS / 40 MHz |
| Supply 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 |
| Operating Temperature | -40 C to +85 C (Industrial) | -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 |
关键差异点
- Same-family 32 KB Flash variant in TQFP-44 （对比 PIC24HJ32GP304T-I/PT)
- Direct upgrade path to 128 KB Flash same package （对比 PIC24HJ128GP504-I/PT)
- ECAN peripheral for industrial networking （对比 PIC24HJ32GP202-I/SP)
- 8-channel DMA controller for offloaded transfers （对比 PIC24FJ64GA002-I/SO)
设计说明
Place a 0.1 uF decoupling capacitor within 3 mm of each VDD pin (pins 11 and 28) and a bulk 4.7 uF or 10 uF tantalum/ceramic on the 3.3 V rail. The PIC24HJ32GP304-I/PT can source inrush current of up to ~50 mA during ADC sampling bursts, so the supply must respond quickly. Use an LDO with at least 200 mA headroom and PSRR above 50 dB at 1 MHz to avoid ADC reference noise. Add a 10 uF bulk on AVSS-grounded analog supply if used.
Configure unused pins as digital outputs (not inputs) to avoid floating-pin shoot-through current. Ensure the MCLR pin (pin 7) has a 10 kohm pull-up to VDD, with a 100 nF cap to ground for EMI filtering. Per the datasheet, programming pins PGD/PGC (pins 42/43) must not be used as outputs during reset or the ICD may not be able to communicate. JTAG/ICD connector isolation is required if the board operates near noisy switching nodes.
Route analog traces (AN0-AN15) away from switching PWM traces and use a ground plane with a single point AVSS connection. The VREF+/VREF- pins require a clean 3.0 V reference; an external low-noise reference such as MCP1501-20 may improve ADC accuracy at 12-bit level. Place a 0.1 uF and 10 uF cap pair on VREF+ to filter ADC reference noise. Shield the analog input traces with guard rings tied to AVSS if high-impedance sources are used.
The TQFP-44 package has a thermal resistance theta_JA of approximately 50 C/W in still air. At 40 MHz and 3.3 V the active current is ~50 mA, dissipating ~165 mW; thermal rise is ~8 C above ambient, which is well within the 85 C industrial max. Estimated: with VDD=3.3 V, IDD_ACTIVE=50 mA typical per datasheet. Ensure that self-heating plus ambient does not exceed 85 C; no heatsink is required.