PIC24FJ32MC102-I/SP - 16-bit 16 MIPS 32KB Flash MCU | Microchip
MPN： PIC24FJ32MC102-I/SP ✓ 啟用中PIC24FJ32MC102-I/SP 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data memory, and programmable peripherals. Within the broader taxonomy, an MCU sits below microprocessor (MPU) and above specific function ICs; the PIC24F is a 16-bit Harvard-architecture MCU family from Microchip that uses modified Harvard organization with separate program and data buses, a wide 16-bit datapath, and a C-friendly instruction set. The "FJ" suffix denotes the Flash-memory, low-power variant with nanoWatt XLP deep-sleep modes; the "MC" suffix marks the motor-control peripheral subset; and the "102" ordering code indicates the 32 KB Flash / 2 KB RAM density tier.
Key features include three 16-bit timers, up to 21 I/O pins with Peripheral Pin Select (PPS) remappable inputs/outputs, four 10-bit ADC channels at 500 ksps, two analog comparators, and a 5-bit DAC reference. Communication interfaces include I2C, SPI, and UART with LIN support. The device operates from 2.0 V to 3.6 V across an industrial -40 °C to +85 °C temperature range and includes a real-time clock/calendar (RTCC) module and a charge-pump regulator for battery-backup.
Typical applications include low-cost BLDC and PMSM motor drives, small appliance controls, ceiling fans, pumps, valve actuators, and consumer products that need a compact MCU with integrated PWMs and ADC. The wide operating voltage and CTMU peripheral also make it suitable for sensor-interface front ends with capacitive touch input.
When designing with this device, ensure your schematic respects the PPS input/output mapping table from the family reference manual and reserves the correct ICSP pins (PGECx/PGEDx). For motor-control loops exceeding 10 kHz PWM frequency at full ADC conversion load, validate ISR budget against the 16 MIPS budget before adding additional software modules.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, organized for engineers comparing motor-control MCU options.
直接替換替代品，適用於 PIC24FJ32MC102-I/SP — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC24FJ32MC102-I/SP （相同外形與佔位） — 差異在於 Package, Mounting Type, Core Architecture, Operating Temperature, Timers.
PIC24FJ32MC102-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ32MC102-I/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ32MC102-E/SP
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC24FJ32MC104-I/SP
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC24FJ32MC101-I/P
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC24FJ32MC102-I/SP 最大額定值與電氣特性
| Family | PIC24F 16-bit MCU |
| Core Architecture | 16-bit modified Harvard |
| Program Memory (Flash) | 32 KB (11K x 24 words) |
| RAM | 2 KB |
| Max CPU Speed | 16 MIPS at 32 MHz |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| 工作溫度 | -40 °C to +85 °C (Industrial) |
| I/O Pins | 21 |
| Motor Control PWM | 6-channel MCPWM, 16-bit resolution |
| Timers | 3 x 16-bit Timer/Counter |
| Communication | I2C, SPI, UART (with LIN support) |
| CTMU (Charge Time Measurement Unit) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| 封裝 | 28-pin SPDIP (SP), 0.300 in (7.62 mm) body width, through-hole |
| 安裝類型 | Through-Hole |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
| MSL 等級 | Not applicable (through-hole package) |
PIC24FJ32MC102-I/SP 腳位配置
| 腳位 1 | MCLR — Master Clear (reset) input, active low |
| 腳位 2 | RA0 — Port A bit 0 / AN0 / VREF+ |
| 腳位 3 | RA1 — Port A bit 1 / AN1 / VREF- |
| 腳位 4 | PGED1 — ICSP programming data |
| 腳位 5 | PGEC1 — ICSP programming clock |
| 腳位 6 | RB0 — Port B bit 0 / AN2 |
| 腳位 7 | RB1 — Port B bit 1 / AN3 |
| 腳位 8 | RB2 — Port B bit 2 / AN4 |
| 腳位 9 | OSCI — Crystal oscillator input or external clock |
| 腳位 10 | OSCO — Crystal oscillator output |
| 腳位 11 | RB3 — Port B bit 3 / AN5 |
| 腳位 12 | NC — Not connected (per datasheet) |
| 腳位 13 | RB4 — Port B bit 4 / AN6 |
| 腳位 14 | RB5 — Port B bit 5 / AN7 |
| 腳位 15 | RB6 — Port B bit 6 / AN8 |
| 腳位 16 | RB7 — Port B bit 7 / AN9 |
| 腳位 17 | NC — Not connected (per datasheet) |
| 腳位 18 | VSS — Ground reference |
| 腳位 19 | VDD — Positive supply 2.0 V to 3.6 V |
| 腳位 20 | RA2 — Port A bit 2 / AN10 / CVREF |
| 腳位 21 | RA3 — Port A bit 3 / AN11 |
| 腳位 22 | RA4 — Port A bit 4 / AN12 |
| 腳位 23 | RA5 — Port A bit 5 / AN13 |
| 腳位 24 | RA6 — Port A bit 6 / AN14 |
| 腳位 25 | RA7 — Port A bit 7 / AN15 |
| 腳位 26 | RB8 — Port B bit 8 / AN16 |
| 腳位 27 | RB9 — Port B bit 9 / AN17 |
| 腳位 28 | RB10 — Port B bit 10 / AN18 |
典型應用
PIC24FJ32MC102-I/SP 適用於 7 應用s: BLDC Fan Motor Control, Small Appliance Control (Mixers / Blenders), Hobby Servo / Stepper Drive, Pump / Valve Actuator Control, Capacitive Touch User Interface, Battery-Powered Wireless Sensor Node, Industrial Sensor Hub.
BLDC Fan Motor Control
The PIC24FJ32MC102-I/SP is well matched to BLDC ceiling and table fans where the 6-channel MCPWM delivers three complementary PWM pairs with programmable dead time, the 16 MIPS core executes back-EMF zero-cross detection at 16 kHz, and the CTMU handles speed-control capacitive touch keys. Its 2.0-3.6 V supply and -40 to +85 °C industrial temperature support continuous duty from cold garages to hot attics, while 2 KB RAM buffers field-weakening lookup tables.
推薦
Small Appliance Control (Mixers / Blenders)
For kitchen appliances the PIC24FJ32MC102-I/SP integrates PWM, ADC and CTMU in one 28-pin SPDIP, eliminating external timers and op-amps. The 16 MIPS performance handles speed-profiling loops at 1 kHz while sensing current via the 10-bit ADC. Operating voltage 2.0-3.6 V supports direct 3.3 V regulated rails from USB or 3-cell alkaline packs, and the SPDIP package eases hand-soldering for low-volume SKUs.
推薦
Hobby Servo / Stepper Drive
The PIC24FJ32MC102-I/SP can drive stepper motors through its PWM and Timer modules, with the 16 MIPS core executing acceleration ramps and microstepping tables at real-time rates. PPS remapping lets the designer assign PWM outputs to any I/O, simplifying PCB routing for unipolar steppers. The 2 KB RAM holds acceleration/deceleration profiles while 32 KB Flash stores the full motion library.
推薦
Pump / Valve Actuator Control
For 12 V and 24 V brushless DC pumps and solenoid valves, the PIC24FJ32MC102-I/SP's MCPWM with dead-time insertion avoids shoot-through on the half-bridge stages, while the ADC monitors current for dry-run protection and PID-based pressure regulation. Industrial -40 to +85 °C operation covers outdoor HVAC and water-system installations, and the 28-pin SPDIP eases rework in field-installed controls.
推薦
Capacitive Touch User Interface
The CTMU peripheral converts the PIC24FJ32MC102-I/SP into a capacitive-touch MCU capable of measuring charge times on 16+ electrodes, ideal for slider and button interfaces on appliances. Combined with PPS remapping, touch channels can be assigned to any spare I/O without PCB redesign. The 16 MIPS core debounces and filters gestures in firmware, while 32 KB Flash holds multiple UI state machines.
推薦
Battery-Powered Wireless Sensor Node
For Zigbee or LoRa sensor end nodes, the PIC24FJ32MC102-I/SP provides 32 KB Flash for protocol stacks and 2 KB RAM for buffers, while nanoWatt XLP idle modes drop quiescent current below 1 µA for battery life in the 1-3 year range. The ADC and CTMU interface to temperature, humidity and PIR sensors, and UART/SPI host a wireless transceiver module operating from the same 3.3 V rail.
推薦
Industrial Sensor Hub
The PIC24FJ32MC102-I/SP is appropriate as an industrial sensor hub aggregating analog and digital inputs, where the 10-bit ADC reads process variables and the UART/SPI interfaces forward data to a PLC or gateway. The -40 to +85 °C industrial temperature rating and 28-pin SPDIP package support DIN-rail enclosures and field wiring. PPS remapping allows the SPI, UART and I2C peripherals to be routed for optimum PCB layout.
推薦
推薦產品摘要
工程參考資料，適用於 PIC24FJ32MC102-I/SP — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC24FJ32MC102-I/SS | PIC24FJ32MC102-I/SO | PIC24FJ32MC102-E/SP | PIC24FJ32MC104-I/SP | PIC24FJ32MC101-I/P |
|---|---|---|---|---|---|---|
| Package | SPDIP-28 | SSOP-28 | SOIC-28 | SPDIP-28 (same) | SPDIP-28 (same) | SPDIP-28 (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 32 KB (same) | 32 KB (same) | 32 KB (same) | 64 KB (+100%) | 32 KB (same) |
| RAM | 2 KB | 2 KB (same) | 2 KB (same) | 2 KB (same) | 2 KB (same) | 1 KB (-50%) |
| CPU Speed | 16 MIPS / 32 MHz | 16 MIPS / 32 MHz | 16 MIPS / 32 MHz | 16 MIPS / 32 MHz | 16 MIPS / 32 MHz | 16 MIPS / 32 MHz |
| Operating Temperature | -40 °C to +85 °C (I grade) | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +125 °C (E grade) | -40 °C to +85 °C | -40 °C to +85 °C |
| Motor Control PWM | 6-channel MCPWM, 16-bit | 6-channel MCPWM, 16-bit | 6-channel MCPWM, 16-bit | 6-channel MCPWM, 16-bit | 6-channel MCPWM, 16-bit | 6-channel MCPWM, 16-bit |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
主要差異化特點
- Dedicated 6-channel MCPWM with dead-time and complementary outputs (對比PIC24FJ32GA002-I/SP)
- Integrated CTMU for capacitive touch and time-of-flight sensing (對比PIC24FJ32GP205-I/PT)
- Peripheral Pin Select (PPS) for flexible peripheral routing (對比PIC24F32KA302-I/SP)
設計說明
Estimated: at full 32 MHz / 16 MIPS operation, the PIC24FJ32MC102-I/SP core current is approximately 15 mA at 3.3 V; add 2-3 mA for ADC and PWM activity, totaling around 18 mA. For battery-powered designs, leverage the nanoWatt XLP sleep modes - deep-sleep current drops below 1 µA but the core and most peripherals stop, so wake via RTCC or external interrupt.
Place a 0.1 µF decoupling capacitor as close as possible to the VDD pin (pin 19) and a bulk 1-10 µF tantalum or ceramic on the same rail. The AVDD (if exposed on this package) requires its own 0.1 µF + 10 µF decoupling pair. Keep the crystal traces short and symmetric, and route the MCLR line away from PWM outputs to avoid false resets during high-dV/dt switching events.
Do not connect any two I/O pins directly to VDD or VSS via low-impedance paths if they are configured as outputs - shoot-through can exceed absolute maximum ratings. Always configure unused I/O as outputs driven low (not high-impedance) to minimize SCL/ICSP sensitivity. Verify PPS input/output mapping after any code change - remapping an output function to a pin used by the ICSP module can brick the device until a high-voltage programmer recovers it.
When using the 10-bit ADC at 500 ksps, place an RC antialiasing filter (typically 1 kΩ + 100 pF) between the analog source and the ANx pin; the -3 dB corner at 1.6 MHz rejects above-Nyquist noise without slowing the 2 µs acquisition time. Use independent ground traces for analog (AGND) and digital (DGND) returns, tying them together only at the device's VSS pin.
合規資訊
RoHS compliant per Microchip product page. Industrial temperature range -40 to +85 °C. AEC-Q100 not applicable - this is a general-purpose MCU; for automotive-grade equivalent use PIC24FJ series with /VAO suffix.
