PIC24FJ32GA002-E/SS - 16-bit 32KB Flash MCU, 28-SSOP | Microchip
料号： PIC24FJ32GA002-E/SS ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.95 | $4.95 |
| 10 | $4.45 | $44.50 |
| 100 | $3.85 | $385.00 |
| 500 | $3.45 | $1,725.00 |
| 1,000 | $3.1 | $3,100.00 |
PIC24FJ32GA002-E/SS 概述
A microcontroller (MCU) is a single-chip computer containing a processor core, non-volatile program memory (typically Flash), volatile working memory (SRAM), and integrated peripherals such as timers, communication interfaces, and analog blocks. The PIC24F family from Microchip uses a 16-bit modified Harvard RISC architecture with 16 working registers and a hardware multiplier, classified under the hypernyms MCU -> microcontroller -> embedded processor -> semiconductor. The "FJ" prefix denotes the eXtreme Low Power (XLP) technology family, providing nanoWatt sleep currents for battery-powered designs.
Key features of the PIC24FJ32GA002-E/SS include 21 general-purpose I/O pins, two UART modules, two SPI modules, two I2C modules, a 10-bit ADC with up to 13 input channels, five 16-bit timers, a real-time clock and calendar (RTCC), and a charge time measurement unit (CTMU) for capacitive touch sensing. The -E temperature grade supports an extended range of -40 °C to +125 °C, suiting industrial and automotive-grade environments.
The core combines a 16-bit ALU with a C compiler-friendly instruction set, providing deterministic interrupt latency and 16 MIPS throughput at 32 MHz. The integrated nanoWatt XLP technology enables typical sleep currents below 1 µA, while the peripheral pin select (PPS) feature allows flexible remapping of digital peripherals to any I/O pin, simplifying PCB routing for complex designs.
Typical applications include industrial sensor interfaces, low-power remote controls, capacitive touch user interfaces, USB-to-UART bridges, and portable medical or fitness devices. The wide operating voltage and rich analog/digital peripheral mix also make it suitable for home appliances and human-machine interface (HMI) panels.
Designers should evaluate the trade-off between Flash size and RAM (32 KB / 8 KB) versus larger PIC24FJ devices such as the 64 KB / 8 KB PIC24FJ64GA002 when firmware growth is anticipated. For new designs without legacy constraints, the PIC24FJ32GA002-E/SO variant in SOIC-28 may be preferred for hand-prototyping due to easier soldering.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found on a single manufacturer page or distributor listing, helping engineers rapidly compare and qualify the part.
直接替换替代料： PIC24FJ32GA002-E/SS ——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： PIC24FJ32GA002-E/SS （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, ADC, Core Architecture, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
PIC24FJ32GA002-I/SS
✅ 直接替换📋 参考替代料（不在目录中）
PIC24FJ32GA002T-I/SS
✅ 直接替换✓ 有现货
$2.2 / 个
查看数据手册 →PIC24FJ16GA002-E/SS
✅ 直接替换✓ 有现货
$1.85 / 个
查看数据手册 →PIC24FJ64GA002-E/SS
✅ 直接替换📋 参考替代料（不在目录中）
PIC24FJ32GA002-E/SS 最大额定值与电气特性
| Core Architecture | PIC24F 16-bit RISC |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 32 KB (11K x 24 words) |
| RAM | 8 KB (8192 bytes) |
| Operating Voltage Range | 2.0 V to 3.6 V |
| I/O Pins | 21 |
| ADC | 10-bit, up to 13 channels |
| UART Modules | 2 |
| SPI Modules | 2 |
| I2C Modules | 2 |
| Timers | 5 x 16-bit |
| PWM Channels | 5 (16-bit resolution) |
| Temperature Grade | -40 °C to +125 °C (Extended -E) |
| 封装 | 28-pin SSOP (0.209 inch / 5.30 mm body) |
| 安装类型 | Surface Mount |
| Special Features | nanoWatt XLP, RTCC, CTMU, Peripheral Pin Select |
PIC24FJ32GA002-E/SS 引脚配置
| 引脚 1 | RA2 — Port A bit 2 (analog/digital I/O) |
| 引脚 2 | RA3 — Port A bit 3 (analog/digital I/O) |
| 引脚 3 | RA4 — Port A bit 4 (analog/digital I/O) |
| 引脚 4 | MCLR — Master Clear (reset, active low) |
| 引脚 5 | VSS — Ground reference |
| 引脚 6 | RA7 — Port A bit 7 (analog/digital I/O, also OSC1) |
| 引脚 7 | RA8 — Port A bit 8 (analog/digital I/O, also OSC2) |
| 引脚 8 | RB0 — Port B bit 0 (PPS-capable I/O) |
| 引脚 9 | RB1 — Port B bit 1 (PPS-capable I/O) |
| 引脚 10 | RB2 — Port B bit 2 (PPS-capable I/O) |
| 引脚 11 | RB3 — Port B bit 3 (PPS-capable I/O) |
| 引脚 12 | RB4 — Port B bit 4 (PPS-capable I/O) |
| 引脚 13 | RB5 — Port B bit 5 (PPS-capable I/O) |
| 引脚 14 | RB6 — Port B bit 6 (ICS programming clock) |
| 引脚 15 | RB7 — Port B bit 7 (ICS programming data) |
| 引脚 16 | VSS — Ground reference (second VSS pin) |
| 引脚 17 | VDD — Positive supply (2.0 V to 3.6 V) |
| 引脚 18 | RB8 — Port B bit 8 (PPS-capable I/O) |
| 引脚 19 | RB9 — Port B bit 9 (PPS-capable I/O) |
| 引脚 20 | RB10 — Port B bit 10 (PPS-capable I/O) |
| 引脚 21 | RB11 — Port B bit 11 (PPS-capable I/O) |
| 引脚 22 | RC0 — Port C bit 0 (analog/digital I/O) |
| 引脚 23 | RC1 — Port C bit 1 (analog/digital I/O) |
| 引脚 24 | RC2 — Port C bit 2 (analog/digital I/O) |
| 引脚 25 | RA0 — Port A bit 0 (analog/digital I/O) |
| 引脚 26 | RA1 — Port A bit 1 (analog/digital I/O) |
| 引脚 27 | AVSS — Analog ground |
| 引脚 28 | AVDD — Analog positive supply |
典型应用
PIC24FJ32GA002-E/SS 适用于 6 应用s: Industrial Sensor Interfaces, Low-Power Remote Controls, Capacitive Touch User Interfaces, USB-to-UART Bridge Dongles, Portable Medical and Fitness Devices, Home Appliance HMI Panels.
Industrial Sensor Interfaces
The PIC24FJ32GA002-E/SS fits industrial sensor interface boards because of its 10-bit ADC with up to 13 input channels, 21 GPIO pins, and 2.0 V to 3.6 V operation tolerant of 24 V industrial rails after regulation. Its 16 MIPS throughput runs PID loops and MODBUS framing in real time, and the nanoWalt XLP sleep modes below 1 µA enable 4-20 mA loop-powered transmitters that survive battery backup. Five 16-bit timers handle rate measurement and PWM actuator drive. Compared with 8-bit MCUs, the 16-bit core delivers tighter math precision for temperature and pressure conversions in the same 28-SSOP footprint.
推荐
Low-Power Remote Controls
Battery-powered remote controls benefit from the PIC24FJ32GA002-E/SS nanoWalt XLP technology that drops sleep current under 1 µA, allowing a CR2032 cell to last years. The 32 KB Flash holds RF protocol stacks and IR encoding tables, while the 8 KB RAM buffers multiple button events. Two UART/SPI/I2C peripherals support sub-GHz transceivers such as the CC1101, and five PWM channels can drive LED backlights and vibration motors. Compared to 32-bit Cortex-M0+ parts, the PIC24F delivers comparable sleep performance at lower cost in the 28-SSOP footprint.
推荐
Capacitive Touch User Interfaces
Capacitive touch keypads and sliders leverage the PIC24FJ32GA002-E/SS integrated CTMU (Charge Time Measurement Unit), which measures capacitance changes on any GPIO pin without an external touch IC. Combined with 32 KB Flash to run mTouch firmware libraries and 21 I/O pins to drive 12-16 touch electrodes, the part replaces dedicated touch controllers in appliances and consumer electronics. The 10-bit ADC handles proximity sensing, and RTCC powers wake-on-touch scheduling. The extended -40 °C to +125 °C temperature grade ensures reliable touch performance in outdoor kiosks.
推荐
USB-to-UART Bridge Dongles
USB-to-UART bridge dongles use the PIC24FJ32GA002-E/SS for its two UART modules and 32 KB Flash to run USB CDC class drivers, though an external USB transceiver such as the MCP2200 or MCP2221 is typically paired. The 16 MIPS throughput sustains 1 Mbaud serial throughput without bottlenecking, and 8 KB RAM buffers several KB of bidirectional traffic. The 28-SSOP package fits inside USB-stick enclosures. Compared to dedicated bridge ICs, this approach allows custom command-set extensions and firmware OTA updates via the same UART.
推荐
Portable Medical and Fitness Devices
Portable medical and fitness devices leverage the PIC24FJ32GA002-E/SS extended temperature range (-40 °C to +125 °C), low-power nanoWalt XLP modes, and 10-bit ADC for biosensor signal conditioning. Heart-rate, SpO2, and pedometer algorithms fit within 32 KB Flash, while 8 KB RAM supports step history and BLE buffering. Two I2C buses connect to accelerometers and optical sensors, and the RTCC tracks timestamps without waking the CPU. The 28-SSOP footprint simplifies integration into wristband PCBs compared to QFN-packaged 32-bit alternatives.
推荐
Home Appliance HMI Panels
Home appliance HMI panels, including washing machines, ovens, and induction cooktops, use the PIC24FJ32GA002-E/SS to drive 7-segment LED or character LCD displays via its five PWM channels and 21 I/O pins. The wide 2.0 V to 3.6 V supply tolerance survives rectified mains rails after regulation, while the extended temperature grade handles under-hood automotive and kitchen environments. Two SPI peripherals drive dot-matrix displays or external EEPROMs for user preferences, and the RTCC schedules delayed-start programs. Compared to 8-bit MCUs, the 16-bit core simplifies multi-tasking across motor, display, and sensor control loops.
推荐
推荐产品汇总
工程参考数据： PIC24FJ32GA002-E/SS ——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 | PIC24FJ32GA002-I/SS | PIC24FJ32GA002T-I/SS | PIC24FJ32GA002-E/SO | PIC24FJ16GA002-E/SS | PIC24FJ64GA002-E/SS |
|---|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SOIC (different land pattern) | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB | 64 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Temperature Grade | -40 to +125 °C (-E extended) | -40 to +85 °C (-I industrial) | -40 to +85 °C (-I industrial) | -40 to +125 °C (-E extended) | -40 to +125 °C (-E extended) | -40 to +125 °C (-E extended) |
| Maximum Clock | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| 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 |
| I/O Pins | 21 | 21 | 21 | 21 | 21 | 21 |
关键差异点
- Extended -40 to +125 °C temperature grade in compact 28-SSOP （对比 PIC24FJ32GA002-I/SS)
- Doubles Flash for firmware growth without PCB changes （对比 PIC24FJ16GA002-E/SS)
- More Flash than needed when cost dominates （对比 PIC24FJ64GA002-E/SS)
设计说明
Place a 10 µF tantalum or ceramic bypass capacitor as close as possible to the VDD/AVDD pins (pins 17 and 28) and a 100 nF ceramic on each VDD pair. For nanoWatt XLP sleep modes, ensure no high-impedance floating analog inputs exceed 1 µA leakage by adding a 100 kΩ pull-down or by disabling unused ADC channels in firmware. The internal voltage regulator (DISVREG pin) must be tied properly per the datasheet to achieve the lowest sleep currents.
Route the ICSP programming pins (RB6/RB7) directly to a 5-pin header with no series resistors; Microchip programmers require direct access for in-circuit serial programming. Keep the crystal traces (RA7/RA8) short and symmetric, with the load capacitors (typically 15-33 pF) within 5 mm of the IC. Place a ground pour under and around the SSOP body to improve thermal dissipation and reduce EMI susceptibility on analog ADC traces.
Do not leave unused I/O pins floating - configure them as outputs low or inputs with internal pull-ups in firmware to avoid CMOS shoot-through and excess sleep current. The DISVREG pin must follow the datasheet connection diagram exactly (tie to VDD when using internal regulator, or to ground when using external 2.5 V supply). Failing to do so can prevent the part from entering nanoWalt sleep modes. Also verify all VSS/AVSS pins are connected, even if only one is used for the analog ground return.
When using the 10-bit ADC, add a small RC filter (1 kΩ + 100 nF) on each analog input to limit bandwidth to below the conversion rate and prevent aliasing. Use the dedicated AVDD/AVSS pins (28/27) for analog supply, and route digital signals away from analog traces. The peripheral pin select (PPS) feature lets you remap digital peripherals to clean I/O pins, avoiding noisy port pins adjacent to high-frequency switching nodes.
合规信息
RoHS and lead-free per Microchip product page; not AEC-Q100 qualified (extended temperature grade only, no automotive certification).
