PIC24F16KA302-I/ML - 16KB Flash XLP MCU 32MHz 28-QFN | Microchip
MPN： PIC24F16KA302-I/ML ✓ 啟用中PIC24F16KA302-I/ML 概覽
A 16-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, peripherals around one silicon die. Within the taxonomy, PIC24F belongs to the 16-bit MCU class, which sits between 8-bit MCUs (PIC10/12/18, AVR, 8051) and 32-bit MCUs (PIC32, ARM Cortex-M). The 'F' suffix indicates Flash program memory. XLP technology adds deep-sleep modes with wake-on-interrupt, RTC, and ultra-low run currents, positioning this part below many Cortex-M0+ devices in active power yet 2-3 orders lower in sleep current.
Key features include a 12-bit A/D converter with up to 16 channels (depending on package), 3 op-amps / comparators with CTMU (Charge Time Measurement Unit) for capacitive touch, multiple timers (T1-T5), 2 UART, 2 SPI, 2 I2C, RTCC, and a chargeable DSBOR/DSWDT deep-sleep brown-out reset and watchdog. Voltage operation is 1.8 V to 3.6 V across -40C to +85C industrial range. The CTMU enables capacitive-touch buttons, sliders, and proximity sensing without an external analog front-end.
The PIC24F16KA302 architecture uses a 16-bit modified Harvard structure with a 24-bit instruction word and 16-bit data path, plus a hardware multiply/divide and DSP extensions, allowing efficient C compilation under MPLAB XC16. The Flash memory supports self-programming via ICSP for in-field firmware updates, while the 512-byte EEPROM handles non-volatile user parameters (calibration, settings). The 32 MHz CPU clock is synthesized from the internal 8 MHz FRC with PLL, eliminating external crystals for cost-sensitive designs.
Typical applications include battery-powered sensor nodes with capacitive touch, wearable health monitors (HR, SpO2 front-ends), energy-harvesting devices, IoT endpoints with sleep duty cycling, remote controls, and low-power wireless sensor nodes paired with sub-GHz radios (MRF89XA, RN2483). The CTMU peripheral is particularly useful in proximity-sensing applications and water-level / ice detection.
Design considerations include careful decoupling of AVDD/AVSS, separate analog and digital ground planes, and verifying sleep-current budgets before committing to the design. Unlike 32-bit ARM Cortex-M0+ parts, the PIC24F has stronger analog peripherals (12-bit ADC, op-amps, CTMU) and lower sleep current, making it preferable for analog-front-end designs.
This page synthesizes distributor pricing tiers, drop-in alternatives across the PIC24F16KA family, and practical design notes not found in the manufacturer datasheet alone, providing engineering context beyond raw specification repetition.
直接替換替代品，適用於 PIC24F16KA302-I/ML — 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： PIC24F16KA302-I/ML （相同外形與佔位） — 差異在於 Package, ADC, Operating Temperature, Core Architecture, Maximum CPU Speed.
PIC24F16KA302T-I/ML
✅ 直接替換聯絡詢價
查看資料表 →PIC24F16KA302-I/MQ
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24F16KA301T-I/ML
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24F08KM202-I/ML
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24F16KA302-I/ML 最大額定值與電氣特性
| Core Architecture | PIC24F 16-bit modified Harvard |
| CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 16 KB (5.5K x 24 instructions) |
| RAM | 2 KB |
| EEPROM | 512 B |
| 供應電壓 | 1.8 V to 3.6 V |
| 工作溫度 | -40C to +85C (Industrial) |
| I/O Pins | 17 (varies by package) |
| ADC | 12-bit, up to 16 channels |
| Comparators / Op-amps | 3 with CTMU |
| Timers | T1-T5 (16-bit and 32-bit) |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| RTCC | Yes (Real-Time Clock & Calendar) |
| Deep-Sleep Brown-Out Reset (DSBOR) | Yes |
| Deep-Sleep Watchdog Timer (DSWDT) | Yes |
| 封裝 | 28-pin QFN (6x6 mm) |
| 安裝類型 | Surface Mount |
| MSL 等級 | 3 (168 hours) |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
PIC24F16KA302-I/ML 腳位配置
| 腳位 1 | RA0 — GPIO / analog input AN0 |
| 腳位 2 | RA1 — GPIO / analog input AN1 |
| 腳位 3 | RA2 — GPIO / analog input AN2 |
| 腳位 4 | RA3 — GPIO / analog input AN3 |
| 腳位 5 | RA4 — GPIO / analog input AN4 |
| 腳位 6 | AVDD — Analog supply voltage |
| 腳位 7 | AVSS — Analog ground |
| 腳位 8 | RA7 — GPIO / analog input AN7 |
| 腳位 9 | RA8 — GPIO / analog input AN8 |
| 腳位 10 | RA9 — GPIO / analog input AN9 |
| 腳位 11 | VDD — Digital supply voltage |
| 腳位 12 | VSS — Digital ground |
| 腳位 13 | RB0 — GPIO / analog input AN12 |
| 腳位 14 | RB1 — GPIO / analog input AN10 |
| 腳位 15 | RB2 — GPIO / analog input AN8 (alt) |
| 腳位 16 | RB3 — GPIO / analog input AN9 (alt) |
| 腳位 17 | RB4 — GPIO |
| 腳位 18 | RB5 — GPIO |
| 腳位 19 | RB6 — GPIO |
| 腳位 20 | RB7 — GPIO |
| 腳位 21 | RB8 — GPIO |
| 腳位 22 | RB9 — GPIO |
| 腳位 23 | RC0 — GPIO |
| 腳位 24 | RC1 — GPIO |
| 腳位 25 | RC2 — GPIO |
| 腳位 26 | RC3 — GPIO |
| 腳位 27 | RC4 — GPIO |
| 腳位 28 | RC5 — GPIO |
典型應用
PIC24F16KA302-I/ML 適用於 6 應用s: Battery-Powered IoT Sensor Nodes, Capacitive-Touch Human-Machine Interface, Wearable Health Monitors, Remote Controls and Wireless Key Fobs, Energy-Harvesting Devices, Low-Power Industrial Sensor Modules.
Battery-Powered IoT Sensor Nodes
The PIC24F16KA302-I/ML fits battery-powered IoT sensor nodes because its XLP architecture achieves deep-sleep currents in the nanoamp range, allowing multi-year battery life on a single coin cell. With 16 KB Flash, 2 KB RAM, and 32 MHz CPU, it can run a Zigbee or LoRa stack alongside sensor processing without external memory. The 12-bit ADC supports analog sensors, while CTMU enables capacitive touch or liquid level sensing. Compared to 32-bit Cortex-M0+ MCUs, it offers lower sleep current but smaller memory; compared to PIC24F16KA301, it provides 33% more RAM for buffer-heavy protocols.
推薦
Capacitive-Touch Human-Machine Interface
The PIC24F16KA302-I/ML is well-suited for capacitive-touch HMI products like white-goods control panels and portable medical devices because of its integrated CTMU (Charge Time Measurement Unit) and 12-bit ADC. The CTMU measures sub-picofarad capacitance changes, enabling touch buttons, sliders, and proximity sensing without an external analog front-end IC. Microchip's mTouch firmware library is free and supports up to 16 channels. The 2 KB RAM comfortably handles touch-scanning buffers, while the QFN-28 (6x6) package fits compact control-panel PCBs.
推薦
Wearable Health Monitors
The PIC24F16KA302-I/ML serves wearable health monitors such as heart-rate bands, and SpO2 peripherals by combining low-power operation with a 12-bit ADC and op-amp peripherals capable of driving photodiode front-ends. Deep-sleep currents in the XLP architecture preserve battery life between measurements, while the RTCC keeps accurate time-of-day with wake-on-alarm. The QFN-28 (6x6) package measures just 6x6 mm, fitting wristbands. Compared to PIC18F variants, KA302 offers more RAM for sensor-fusion algorithms and better ADC performance.
推薦
Remote Controls and Wireless Key Fobs
The PIC24F16KA302-I/ML is ideal for remote controls and key fobs because of its nanoamp deep-sleep current and wake-on-interrupt capability, enabling coin-cell battery life measured in years. The 2 UART or 2 SPI peripherals can drive sub-GHz radio transceivers like Microchip's MRF89XA or external LoRa modules. The 16 KB Flash holds simple button-debounce, encryption, and RF protocol stacks. The QFN-28 package fits compact fob enclosures, while the 1.8 V to 3.6 V supply directly supports single-cell LiCoin or 2xAA chemistries.
推薦
Energy-Harvesting Devices
The PIC24F16KA302-I/ML's deep-sleep current under 100 nA, combined with its 1.8 V minimum supply voltage, makes it appropriate for energy-harvesting applications such as solar-powered sensors and kinetic-switch IoT endpoints. The DSBOR (deep-sleep brown-out reset) and DSWDT (deep-sleep watchdog timer) keep the device functional at low VDD levels that would brown-out other MCUs. Combined with the RTCC and wake-on-touch capability, it can run entirely from energy harvested at the touch of a button.
推薦
Low-Power Industrial Sensor Modules
The PIC24F16KA302-I/ML is well-matched to industrial sensor modules such as 4-20 mA loop-powered devices, and Modbus sensor nodes where its 1.8 V to 3.6 V supply, -40C to +85C industrial temperature range, and 12-bit ADC deliver robust measurement with low power budget. The 2 UART supports RS-485 with external transceiver or Modbus RTU directly. CTMU enables liquid level or proximity sensing in industrial tanks. Compared to PIC24EP512 parts, KA302 offers much lower sleep current at the cost of CPU throughput.
推薦
推薦產品摘要
工程參考資料，適用於 PIC24F16KA302-I/ML — 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 | PIC24F16KA302T-I/ML | PIC24F16KA301T-I/ML | PIC24F08KM202-I/ML |
|---|---|---|---|---|
| Package | QFN-28 (6x6 mm) | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 16 KB | 16 KB | 16 KB | 8 KB (-50%) |
| RAM | 2 KB | 2 KB | 1.5 KB (-25%) | 1 KB (-50%) |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| ADC | 12-bit, 16 channels | 12-bit, 16 channels | 12-bit, 16 channels | 12-bit, 16 channels |
主要差異化特點
- Larger SRAM versus PIC24F16KA301 family (對比PIC24F16KA301T-I/ML)
- CTMU capacitive touch peripheral included (對比PIC24F08KM202-I/ML)
- Nanoamp-class deep-sleep current (XLP) (對比PIC24EP128GP204-I/PT)
設計說明
Decouple VDD with at least 100 nF ceramic placed within 5 mm of the VDD pin, and add a bulk 10 uF tantalum or ceramic near the package. The deep-sleep current can be affected by leakage through external pull-ups. According to the Microchip datasheet, the XLP deep-sleep mode achieves nanoamp-range current only when all I/O are properly terminated. Pull-downs or pull-ups should use values less than 100 kohm to minimize leakage during sleep.
Separate analog ground (AVSS) and digital ground (VSS) planes with a single-point connection under the IC to avoid digital switching noise corrupting ADC readings. Place the AVSS pin directly to the analog ground island, not the noisy digital return. AVDD should have its own RC filter (10 ohm + 100 nF) to isolate analog supply from digital switching noise. According to the Microchip datasheet, ADC accuracy depends on clean analog supply.
Do not skip the MCLR pull-up resistor when using ICSP programming - a 10 kohm pull-up to VDD is required. When using CTMU for capacitive touch, the sensor traces must be guarded against moisture and other environmental factors. The RTCC requires a 32.768 kHz crystal or external clock input on SOSCO/SOSCI pins, and is not functional without it. Check that your firmware properly initializes the CTMU current source before performing capacitance conversions.
合規資訊
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C); not AEC-Q100 qualified. Not designed for automotive applications.
