PIC24F16KA302-I/ML - 16KB Flash XLP MCU 32MHz 28-QFN | Microchip
MPN: PIC24F16KA302-I/ML ✓ Hoạt độngPIC24F16KA302-I/ML Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC24F16KA302-I/ML — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC24F16KA302-I/ML (cùng hình factor và footprint) — khác nhau ở Package, ADC, Operating Temperature, Core Architecture, Maximum CPU Speed.
PIC24F16KA302T-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24F16KA302-I/MQ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC24F16KA301T-I/ML
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC24F08KM202-I/ML
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC24F16KA302-I/ML Tỷ lệ tối đa & tính chất điện
| 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 |
| Điện áp cung cấp | 1.8 V to 3.6 V |
| Nhiệt độ hoạt động | -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 |
| Hộp | 28-pin QFN (6x6 mm) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC24F16KA302-I/ML
| Chân 1 | RA0 — GPIO / analog input AN0 |
| Chân 2 | RA1 — GPIO / analog input AN1 |
| Chân 3 | RA2 — GPIO / analog input AN2 |
| Chân 4 | RA3 — GPIO / analog input AN3 |
| Chân 5 | RA4 — GPIO / analog input AN4 |
| Chân 6 | AVDD — Analog supply voltage |
| Chân 7 | AVSS — Analog ground |
| Chân 8 | RA7 — GPIO / analog input AN7 |
| Chân 9 | RA8 — GPIO / analog input AN8 |
| Chân 10 | RA9 — GPIO / analog input AN9 |
| Chân 11 | VDD — Digital supply voltage |
| Chân 12 | VSS — Digital ground |
| Chân 13 | RB0 — GPIO / analog input AN12 |
| Chân 14 | RB1 — GPIO / analog input AN10 |
| Chân 15 | RB2 — GPIO / analog input AN8 (alt) |
| Chân 16 | RB3 — GPIO / analog input AN9 (alt) |
| Chân 17 | RB4 — GPIO |
| Chân 18 | RB5 — GPIO |
| Chân 19 | RB6 — GPIO |
| Chân 20 | RB7 — GPIO |
| Chân 21 | RB8 — GPIO |
| Chân 22 | RB9 — GPIO |
| Chân 23 | RC0 — GPIO |
| Chân 24 | RC1 — GPIO |
| Chân 25 | RC2 — GPIO |
| Chân 26 | RC3 — GPIO |
| Chân 27 | RC4 — GPIO |
| Chân 28 | RC5 — GPIO |
Ứng dụng tiêu biểu
PIC24F16KA302-I/ML phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC24F16KA302-I/ML — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Larger SRAM versus PIC24F16KA301 family (vsPIC24F16KA301T-I/ML)
- CTMU capacitive touch peripheral included (vsPIC24F08KM202-I/ML)
- Nanoamp-class deep-sleep current (XLP) (vsPIC24EP128GP204-I/PT)
Ghi chú thiết kế
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.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C); not AEC-Q100 qualified. Not designed for automotive applications.
