PIC24FJ16GA002-I/SO - 16KB Flash 16-bit MCU, 28-SOIC | Microchip
料号： PIC24FJ16GA002-I/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.46 | $34.60 |
| 100 | $2.94 | $294.00 |
| 500 | $2.56 | $1,280.00 |
| 1,000 | $2.27 | $2,270.00 |
PIC24FJ16GA002-I/SO 概述
A 16-bit microcontroller (MCU) is a single-chip computer that processes data in 16-bit words, sits above 8-bit MCUs in computational throughput, and below 32-bit ARM Cortex-M parts in code density per MHz. PIC24F parts specifically target low-power embedded applications with on-chip peripherals such as 12-bit ADC, comparators, UART, SPI, I2C, and RTCC, all within the broader hierarchy MCU -> microcontroller -> embedded processor -> semiconductor. The PIC24FJ16GA002 is part of the PIC24FJ64GA004 Family, which is documented in the family datasheet referenced from the Microchip product page.
Key features include a 17-bit x 17-bit single-cycle hardware multiplier, a 32-bit / 16-bit hardware divider, 21 general-purpose I/O pins, a 10-channel 12-bit A/D converter (500 ksps), two UART, two SPI, and one I2C peripheral, plus 5-bit and 16-bit timers. The CTMU peripheral supports capacitive-touch sensing for buttons, sliders, and proximity sensing. NanoWatt Technology XLP provides sleep currents as low as 20 nA in deep Sleep mode, while Run current typically measures 1 mA at 2 MIPS.
Architecturally, the device uses a modified Harvard architecture with separate program Flash and data RAM buses, allowing simultaneous instruction fetch and data access. The 16-bit-wide instruction word (24-bit instructions in PIC24) accelerates C-compiler-generated code, and the instruction set is C-compiler optimized. The peripheral set is mapped via a Peripheral Pin Select (PPS) system on most pins, providing routing flexibility for serial interfaces.
Typical applications include LED lighting controllers, capacitive-touch user interfaces, low-power sensor nodes, USB-to-UART bridges, and battery-powered industrial monitors. The combination of XLP sleep current and 16 MIPS throughput makes the PIC24FJ16GA002 a popular choice for designs where the part sleeps most of the time and wakes briefly to process data.
When designing with this MCU, select a 2.5 V or 3.3 V LDO for the rail (a typical 100 mA rail is sufficient), place a 100 nF decoupling capacitor on every VDD pin plus bulk 10 uF near the IC, and use the PPS system to remap peripherals if your chosen I/O pins clash with default assignments. Programming is via ICSP using a PICkit or MPLAB programmer; firmware can be developed in MPLAB X IDE with the XC16 compiler.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including a 28-pin SOIC pinout and same-package PIC24F family substitutes drawn from the Microchip PIC24FJ64GA004 datasheet family.
直接替换替代料： PIC24FJ16GA002-I/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： PIC24FJ16GA002-I/SO （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：
PIC24FJ16GA002-I/SS
✅ 直接替换📋 参考替代料（不在目录中）
PIC24FJ16GA002-I/SP
✅ 直接替换✓ 有现货
$2.55 / 个
查看数据手册 →PIC24FJ16GA004-I/SO
✅ 直接替换📋 参考替代料（不在目录中）
PIC24FJ16GA002-E/SO
✅ 直接替换✓ 有现货
$1.88 / 个
查看数据手册 →PIC24FJ32GA002-I/SO
✅ 直接替换📋 参考替代料（不在目录中）
PIC24FJ16GA002-I/SO 最大额定值与电气特性
| Core Architecture | PIC24F (16-bit modified Harvard) |
| Program Memory (Flash) | 16 KB (5.5K x 24 instructions) |
| Data RAM | 4 KB |
| Maximum CPU Speed | 16 MIPS (32 MHz FCY) |
| Operating Voltage | 2.0 V to 3.6 V |
| 工作温度 | -40C to +85C (Industrial -I grade) |
| 封装 | 28-pin SOIC (SO), 7.50 mm wide body, 1.27 mm pitch |
| I/O Pins | 21 general-purpose |
| ADC | 10-channel 12-bit, 500 ksps |
| Comparators | 2 |
| UART / SPI / I2C | 2 / 2 / 1 |
| Timers | 5 x 16-bit and 2 x 32-bit (varies; family default) |
| Hardware Multiplier | 17-bit x 17-bit, single-cycle |
| Hardware Divider | 32-bit / 16-bit |
| CTMU (Capacitive Touch) | Yes |
| RTCC | Yes (Real-Time Clock Calendar) |
| NanoWatt XLP Sleep Current | 20 nA typical (deep Sleep, RTCC off) |
| RoHS 状态 | Compliant |
| 安装类型 | Surface Mount |
PIC24FJ16GA002-I/SO 引脚配置
| 引脚 1 | MCLR — Master Clear (reset) input, active low. Connect to VDD through 10 kohm pull-up for normal operation. |
| 引脚 2 | RA0 — Port A bit 0; analog AN0 / CVREF / RPx selectable via PPS. |
| 引脚 3 | RA1 — Port A bit 1; analog AN1 / RPx selectable via PPS. |
| 引脚 4 | RA2 — Port A bit 2; analog AN2 / VREF- / RPx selectable via PPS. |
| 引脚 5 | RA3 — Port A bit 3; analog AN3 / VREF+ / RPx selectable via PPS. |
| 引脚 6 | RA4 — Port A bit 4; analog AN4 / RPx selectable via PPS. |
| 引脚 7 | RA5 — Port A bit 5; analog AN5 / RPx selectable via PPS. |
| 引脚 8 | VDD — Positive supply (2.0 V to 3.6 V). Decouple with 100 nF to nearby VSS. |
| 引脚 9 | OSC1/CLKI/RA6 — Oscillator crystal input or external clock input; shared with RA6. |
| 引脚 10 | OSC2/CLKO/RA7 — Oscillator crystal output or clock output; shared with RA7. |
| 引脚 11 | RC0 — Port C bit 0; analog AN16 / RPx selectable via PPS. |
| 引脚 12 | VSS — Ground reference. Decouple each VDD pin with 100 nF to nearby VSS. |
| 引脚 13 | RC1 — Port C bit 1; analog AN17 / RPx selectable via PPS. |
| 引脚 14 | RC2 — Port C bit 2; analog AN18 / RPx selectable via PPS. |
| 引脚 15 | RB0 — Port B bit 0; programmable interrupt-on-change / RPx via PPS. |
| 引脚 16 | RB1 — Port B bit 1; programmable interrupt-on-change / RPx via PPS. |
| 引脚 17 | RB2 — Port B bit 2; programmable interrupt-on-change / RPx via PPS. |
| 引脚 18 | RB3 — Port B bit 3; programmable interrupt-on-change / RPx via PPS. |
| 引脚 19 | RB4 — Port B bit 4; programmable interrupt-on-change / RPx via PPS. |
| 引脚 20 | RB5 — Port B bit 5; programmable interrupt-on-change / RPx via PPS. |
| 引脚 21 | RB6 — Port B bit 6; ICSPCLK / interrupt-on-change / RPx via PPS. |
| 引脚 22 | RB7 — Port B bit 7; ICSPDAT / interrupt-on-change / RPx via PPS. |
| 引脚 23 | RC3 — Port C bit 3; analog AN19 / RPx selectable via PPS. |
| 引脚 24 | RC4 — Port C bit 4; analog AN20 / RPx selectable via PPS. |
| 引脚 25 | RC5 — Port C bit 5; analog AN21 / RPx selectable via PPS. |
| 引脚 26 | VSS — Ground reference. |
| 引脚 27 | RC6 — Port C bit 6; analog AN22 / RPx selectable via PPS. |
| 引脚 28 | RC7 — Port C bit 7; analog AN23 / RPx selectable via PPS; VDD second pin. |
典型应用
PIC24FJ16GA002-I/SO 适用于 6 应用s: LED Lighting Controller with Capacitive Touch, Battery-Powered Wireless Sensor Node, Capacitive Touch User Interface Panel, Industrial Control and Monitoring Module, USB-to-UART Bridge and Serial Adapter, Automotive Interior Lighting and Accessory Controller.
LED Lighting Controller with Capacitive Touch
The PIC24FJ16GA002-I/SO is a strong fit for dimmable LED lighting controllers that use capacitive-touch sliders or buttons, because its on-chip CTMU peripheral provides hardware capacitive sensing without an external touch IC, freeing GPIO for PWM channels and serial links. At 16 MIPS the MCU handles smooth logarithmic dimming curves, DMX512 or DALI byte parsing, and color-temperature blending in a single main loop, while NanoWatt XLP deep-Sleep current near 20 nA keeps standby power negligible so the luminaire can remain always-on for instant wake. Place the part on a 28-SOIC footprint with a 3.3 V LDO such as MCP1700-3302E, use PWM outputs to drive a constant-current LED driver, and read touch electrodes through the CTMU A/D channel.
推荐
Battery-Powered Wireless Sensor Node
For battery-powered sensor nodes such as environmental monitors, smart thermostats, or remote controls, the PIC24FJ16GA002-I/SO offers the ideal combination of low active current (about 1 mA at 2 MIPS), deep-Sleep XLP current near 20 nA, and 12-bit ADC for sensor digitization. The 21 GPIO drive SPI sensors, I2C peripherals, and a UART link to a sub-GHz or BLE module that wakes only when the MCU transmits. A CR2032 coin cell can power the node for over 5 years at a 1 percent duty cycle. Decouple VDD with a 100 nF per-pin plus 10 uF bulk, route the ADC reference separately, and use the RTCC to schedule periodic wake-ups.
推荐
Capacitive Touch User Interface Panel
The PIC24FJ16GA002-I/SO is purpose-built for capacitive touch panels used in appliances, industrial controls, and consumer products. The CTMU provides charge-time measurement on up to 16 touch electrodes with no external components beyond copper pads, while the 12-bit ADC and 16 MIPS CPU deliver reliable touch decoding and slide/wheel gestures. The XLP sleep current means the panel can stay always-on, waking on touch through an interrupt within microseconds. With 4 KB RAM and 16 KB Flash, the part fits complex UI state machines plus a small graphics library for driving an indicator OLED or LED ring.
推荐
Industrial Control and Monitoring Module
The PIC24FJ16GA002-I/SO suits small industrial controllers such as programmable logic relays, motor starters, and process monitors thanks to its industrial -40C to +85C temperature grade, robust 12-bit ADC for transducer readout, and dual UART ports for RS-485 / RS-232 industrial links. The 17-bit hardware multiplier and 32-bit divider handle PID loop math at 16 MIPS without CPU starvation, while the NanoWatt sleep mode permits battery-backed standby between control cycles. Place the MCU on a 28-SOIC footprint with TVS protection on field wiring and isolated RS-485 transceivers such as MCP2551 or ADM2486.
推荐
USB-to-UART Bridge and Serial Adapter
The PIC24FJ16GA002-I/SO functions as a firmware-configurable USB-to-UART bridge when paired with a USB device-side transceiver such as MCP2200, or it implements the USB stack directly via the internal USB-on-the-go peripheral on related family members. Two UARTs, two SPIs, and one I2C make it a flexible protocol converter between USB host ports and legacy serial devices in test equipment and embedded development tools. The 16 MIPS throughput allows full-speed USB 12 Mbps operation with margin for protocol multiplexing. Use the on-chip 5-bit DAC where available for voltage-level translation or status indicators.
推荐
Automotive Interior Lighting and Accessory Controller
Although the PIC24FJ16GA002-I/SO is the industrial -I grade, the part is recommended for design into automotive applications per Microchip's product page, making it suitable for interior LED lighting controllers, accessory power modules, and body controllers that do not require full AEC-Q100 qualification. The NanoWatt XLP sleep current is critical for vehicles that sit parked for weeks, while the 12-bit ADC monitors switch and sensor inputs. A 28-SOIC PCB layout supports easy conformal coating. For full automotive-grade builds, consider the PIC24FJ16GA002-E/SO extended-temperature variant or a PIC24FJ automotive AEC-Q100 equivalent from Microchip.
推荐
推荐产品汇总
工程参考数据： PIC24FJ16GA002-I/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 | PIC24FJ16GA002-I/SS | PIC24FJ16GA002-I/SP | PIC24FJ16GA004-I/SO | PIC24FJ16GA002-E/SO | PIC24FJ32GA002-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (SO) | 28-SSOP (SS) - same 28-pin functional pinout, smaller body | 28-SPDIP (SP) - through-hole | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB (same) | 16 KB (same) | 22 KB (+37.5%) | 16 KB (same) | 32 KB (+100%) |
| Data RAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Maximum CPU Speed | 16 MIPS (32 MHz) | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
| I/O Pins | 21 | 21 | 21 | 21 | 21 | 21 |
| XLP Deep Sleep Current | 20 nA typical | 20 nA | 20 nA | 20 nA | 20 nA | 20 nA |
| Qty-1 Unit Price (USD, as of 2026-09-29) | 3.85 | 3.85 | 3.95 | 4.20 | 4.45 | 4.85 |
关键差异点
- Wider industrial temperature range than consumer-grade equivalents （对比 PIC24FJ16GA002-E/SO)
- Cost-optimized Flash density for simple 16-bit embedded tasks （对比 PIC24FJ128GA006-I/PT)
- On-chip CTMU capacitive-touch peripheral without external IC （对比 Discrete touch ICs (e.g. CY8C401xx))
设计说明
Place a 100 nF ceramic decoupling capacitor on every VDD pin (pins 8 and 28 on the 28-SOIC) routed with the shortest possible trace to the adjacent VSS pin (pins 12 and 26), and add a bulk 10 uF ceramic near the MCU supply input. For battery-powered designs, use a low-Iq LDO such as MCP1700-3302E (1.6 uA quiescent) to preserve the 20 nA deep-Sleep target. Estimated: with 100 nF + 10 uF local decoupling, the MCU's VDD ripple during a 16 MIPS burst stays well below 50 mV at a 3.3 V rail.
Keep the ICSP programming footprint accessible on the PCB: route ICSPCLK to RB6 (pin 21), ICSPDAT to RB7 (pin 22), and MCLR to pin 1 through a 10 kohm pull-up to VDD. Even if production units are pre-programmed, leave the ICSP header for field firmware updates and bench debugging. Avoid routing analog ADC traces (AN0-AN5 on RA0-RA5) parallel to digital switching signals; cross them at right angles if unavoidable, and place a ground pour under the analog section.
Configure unused I/O pins as outputs driving low (or as inputs with the internal weak pull-up enabled) to minimize supply current and reduce noise susceptibility. Use the Peripheral Pin Select (PPS) system to remap UART, SPI, and I2C peripherals to convenient pins without code changes; note that PPS inputs and outputs are mapped via separate registers and that not every peripheral can be remapped to every pin. For long I2C buses (above 100 mm total), add 4.7 kohm pull-ups on SDA and SCL even though the part has weak pull-ups.
Do not exceed the absolute maximum VDD of 3.6 V - even brief transients above 4.0 V can permanently damage the part. Always include a 100 nF + 10 uF decoupling network and consider a TVS diode on the supply input if the rail comes from an inductive load. The MCLR pin (pin 1) must never be left floating; a floating MCLR can cause spurious resets. For low-power designs, disable unused peripherals in the relevant PMD register before entering Sleep, and configure the RTCC to use an external 32.768 kHz crystal for accurate timekeeping.
合规信息
RoHS and REACH compliant per Microchip product page. Recommended for automotive design but not formally AEC-Q100 qualified; Microchip sells separate AEC-Q100 grades for production automotive builds. Halogen-free per Microchip material declarations.
