PIC24F32KA302-I/SP - 16-bit XLP MCU 32KB Flash 28-SPDIP | Microchip
부품 번호: PIC24F32KA302-I/SP ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $3.95 | $3.95 |
| 10 | $3.55 | $35.50 |
| 100 | $3.2 | $320.00 |
| 500 | $2.85 | $1,425.00 |
| 1,000 | $2.5 | $2,500.00 |
PIC24F32KA302-I/SP 개요
An MCU (Microcontroller Unit) is a single-chip computer containing a CPU core, non-volatile program memory, volatile data memory, and programmable peripherals. The 16-bit PIC24F architecture uses a modified Harvard RISC core with a 16-bit instruction width and 24-bit instruction word, providing C-friendly code density and deterministic interrupt latency. XLP technology adds Deep Sleep, Sleep, and Idle modes with peripheral retention, enabling coin-cell and battery-powered designs that wake on RTC alarms, comparator events, or external interrupts.
Key features include an operating voltage range of 1.8V to 3.6V, ultra-low Deep Sleep currents in the nanoamp range, configurable peripherals via Peripheral Pin Select (PPS), a 12-bit ADC with up to 16 channels, 5-bit DAC, and a Charge Time Measurement Unit for capacitive touch sensing. The device also integrates a Real-Time Clock Calendar (RTCC) with 48-bit timer running in Deep Sleep, plus DSBOR/DSWDT deep-sleep brown-out reset and watchdog timers. Communication peripherals cover UART, SPI, and I2C.
The architecture combines high-performance 16-bit compute with power-optimized analog blocks, allowing sensor aggregation, signal processing, and low-duty-cycle wireless host tasks from a single chip. The CTMU enables accurate capacitance measurement for touch buttons, level sensing, and time-of-flight use cases without external timing components.
Typical applications include battery-powered IoT sensor nodes, wearable health monitors, energy harvesting devices, remote controls, low-duty-cycle wireless sensor hubs, and industrial metering. The CTMU also enables capacitive touch user interfaces on home appliances and consumer electronics.
When designing with this MCU, ensure decoupling capacitors are placed close to VDD/AVDD/VBAT pins, follow PPS configuration order in code to avoid glitches, and verify Deep Sleep current against your battery life budget. The CTMU requires careful PCB layout with guard traces around touch electrodes to prevent false triggers.
This page consolidates distributor pricing, drop-in alternatives within the same 28-SPDIP family, and practical design notes that complement the manufacturer datasheet.
드롭인 대체품: PIC24F32KA302-I/SP — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC24F32KA302-I/SP (동일 폼 팩터 및 풋프린트) — 차이점: Comparators, Core Architecture, I/O Pins, Operating Temperature, Package.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC24F32KA301-I/SP
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC24F16KA302-I/SP
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC24F32KA302-E/SP
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
PIC24F32KA302-I/SP 최대 정격 & 전기적 특성
| Core Architecture | PIC24F 16-bit RISC modified Harvard |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Flash Memory | 32 KB (11K x 24) |
| Data SRAM | 2 KB |
| EEPROM | 512 bytes |
| Operating Voltage | 1.8 V to 3.6 V |
| I/O Pins | 17 |
| ADC | 12-bit, up to 16 channels |
| CTMU | Charge Time Measurement Unit (capacitive touch) |
| RTCC | Real-Time Clock Calendar with Deep Sleep operation |
| Communications | UART, SPI, I2C |
| Comparators | Yes, multiple |
| DAC | 5-bit |
| Peripheral Pin Select (PPS) | Yes |
| 동작 온도 | -40C to +85C (Industrial) |
| 패키지 | 28-pin SPDIP (Skinny Plastic DIP, 0.300 inch) |
| 실장 유형 | Through-Hole |
| MSL 레벨 | 1 (unlimited floor life) |
| RoHS 상태 | Compliant (lead-free) |
| XLP Technology | eXtreme Low Power, nanoamp Deep Sleep |
PIC24F32KA302-I/SP 핀 구성
| 핀 1 | MCLR — Master Clear (reset) input, active low |
| 핀 2 | RA0 — Port A bit 0 / analog input |
| 핀 3 | RA1 — Port A bit 1 / analog input |
| 핀 4 | RB0 — Port B bit 0 / PGED1 (programming data) |
| 핀 5 | RB1 — Port B bit 1 / PGEC1 (programming clock) |
| 핀 6 | RB2 — Port B bit 2 / analog input |
| 핀 7 | RB3 — Port B bit 3 / analog input |
| 핀 8 | VSS — Ground reference |
| 핀 9 | OSC1 — Oscillator input / CLKIN |
| 핀 10 | OSC2 — Oscillator output / CLKOUT |
| 핀 11 | RB4 — Port B bit 4 / SDA1 (I2C data) via PPS |
| 핀 12 | RB5 — Port B bit 5 / SCL1 (I2C clock) via PPS |
| 핀 13 | RB6 — Port B bit 6 / ICD PGD |
| 핀 14 | RB7 — Port B bit 7 / ICD PGC |
| 핀 15 | AVSS — Analog ground |
| 핀 16 | RB8 — Port B bit 8 / analog input |
| 핀 17 | RB9 — Port B bit 9 / analog input |
| 핀 18 | RC0 — Port C bit 0 / analog input |
| 핀 19 | RC1 — Port C bit 1 / analog input |
| 핀 20 | RC2 — Port C bit 2 / analog input |
| 핀 21 | RC3 — Port C bit 3 / analog input |
| 핀 22 | RC4 — Port C bit 4 / analog input |
| 핀 23 | RC5 — Port C bit 5 / analog input |
| 핀 24 | RC6 — Port C bit 6 / analog input |
| 핀 25 | RC7 — Port C bit 7 / analog input |
| 핀 26 | AVDD — Analog positive supply |
| 핀 27 | VDD — Digital positive supply |
| 핀 28 | RA0 — Port A bit 0 (alternate function / second pad) |
일반적인 애플리케이션
PIC24F32KA302-I/SP 적합 용도: 7 애플리케이션s: Battery-Powered IoT Sensor Nodes, Wearable Health Monitors, Capacitive Touch User Interfaces, Remote Controls and Wireless Hubs, Industrial Metering and Data Loggers, Energy Harvesting Wireless Switches, Automotive Body Electronics (Non-Safety).
Battery-Powered IoT Sensor Nodes
The PIC24F32KA302-I/SP's XLP architecture with sub-100 nA Deep Sleep current and integrated 12-bit ADC makes it ideal for wireless sensor nodes that must run for years on a single coin cell. Its 32 MHz / 16 MIPS core handles protocol stacks and sensor fusion in microsecond bursts before returning to Deep Sleep, while the on-chip RTCC keeps wall-clock time during sleep without consuming significant power. Placed as the main MCU between a sensor (temperature, humidity, motion) and a sub-GHz or BLE radio, it wakes on a timer, samples the ADC, transmits a packet, and returns to Deep Sleep - the typical duty cycle of less than 0.1% yields multi-year battery life from a CR2032.
추천
Wearable Health Monitors
The PIC24F32KA302-I/SP's nanoamp Deep Sleep, integrated CTMU for capacitive touch, and 12-bit ADC for biosignal acquisition make it a strong fit for wearable health monitors such as heart-rate patches, smart thermometers, and fitness bands. The 1.8V-3.6V supply range allows direct connection to single-cell Li-ion or Li-Po batteries without boost converters. The CTMU enables touch/wake-up electrodes on the wearable's housing without mechanical buttons, while the 32-bit arithmetic and DSP instructions handle pedometer and step-count algorithms in firmware, eliminating an external DSP.
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Capacitive Touch User Interfaces
The PIC24F32KA302-I/SP integrates Microchip's CTMU plus a 12-bit ADC, allowing direct capacitive touch button, slider, and wheel sensing without external timing ICs. According to Microchip AN1375, the CTMU drives a constant current into a touch pad and measures the resulting charge time, giving sub-pF resolution suitable for waterproof touch panels. The 16 MIPS core debounces and reports gestures within microseconds, and the configurable logic cells handle glue logic between comparator outputs and PWM or interrupt lines, reducing external component count.
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Remote Controls and Wireless Hubs
Low-duty-cycle remote controls and RF hub coordinators benefit from the PIC24F32KA302-I/SP's microamp Run current and sub-100 nA Deep Sleep. The integrated comparators allow zero-crossing detection on incoming IR or RF signals, while PPS remaps UART/SPI/I2C to any I/O pin, simplifying PCB routing to radio modules like the MRF24J40 or external BLE transceivers. The 32 KB Flash holds full protocol stacks (e.g., simple proprietary or 802.15.4 MAC), and the 2 KB SRAM is sufficient for packet buffering and small sensor tables.
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Industrial Metering and Data Loggers
The PIC24F32KA302-I/SP's 12-bit ADC, 32 KB Flash, and RTCC running in Deep Sleep make it ideal for gas, water, and electricity meters that must record consumption over years without battery replacement. The integrated 512-byte EEPROM stores configuration and tamper flags without wear concerns, while the XLP Deep Sleep mode with RTCC active delivers 10+ year battery life on a single D-cell. PPS reassigns UART/SPI/I2C for external cellular or LoRa modules when remote readout is required, and the comparators detect meter-bypass tampering in real time.
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Energy Harvesting Wireless Switches
Self-powered wireless light switches and IoT buttons harvest energy from a piezoelectric press or photovoltaic cell and transmit a packet. The PIC24F32KA302-I/SP starts up in microseconds at 1.8V, runs the transmission protocol, and returns to Deep Sleep on stored charge. Its 16 MIPS performance transmits a complete packet before the harvested energy decays, while the sub-100 nA Deep Sleep current preserves residual charge. The configurable logic cells debounce the mechanical switch without an external monostable.
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Automotive Body Electronics (Non-Safety)
While the PIC24F32KA302-I/SP is an industrial-grade (-40 to +85C) part, its sibling PIC24F32KA302-E/SP covers the extended automotive range (-40 to +125C). Together the family suits non-safety body modules such as ambient lighting controllers, seat-position memories, and rain/light sensors, where the CTMU handles capacitive seat-occupancy detection and the 12-bit ADC reads photodiodes. The robust ESD ratings and integrated DSBOR ensure reliable operation in 12V automotive environments with load-dump transients.
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추천 제품 요약
엔지니어링 참조 데이터: PIC24F32KA302-I/SP — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC24F32KA301-I/SP | PIC24F16KA302-I/SP | PIC24F32KA302-E/SP |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP | 28-SPDIP | 28-SPDIP | 28-SPDIP |
| Flash Memory | 32 KB | 32 KB | 16 KB | 32 KB |
| SRAM | 2 KB | 2 KB | 1 KB | 2 KB |
| Operating 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 +125C |
| CTMU | Yes | No | Yes | Yes |
| ADC Channels | 16 x 12-bit | 16 x 12-bit | 16 x 12-bit | 16 x 12-bit |
| Max CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| Approx Unit Price (qty 1) | $3.95 | $3.85 | $3.30 | $4.50 |
주요 차별점
- 32 KB Flash vs 16 KB on PIC24F16KA302-I/SP (vs PIC24F16KA302-I/SP)
- Extended temperature variant available in same package (vs PIC24F32KA302-E/SP)
- Through-hole 28-SPDIP package for prototyping (vs PIC24F32KA302-I/ML (QFN-28))
설계 노트
Decouple VDD/AVDD with a 100 nF ceramic capacitor as close to the MCU pins as possible (within 5 mm). For battery-powered designs, place a 10 uF bulk capacitor on VBAT/VDD to handle transmit bursts when the radio and MCU wake simultaneously. The DSBOR (Deep Sleep Brown-Out Reset) block should be enabled with a threshold 200-300 mV below the lowest expected battery voltage to avoid spurious resets as cells age.
Route analog inputs (AN0-AN15) away from switching digital lines and the oscillator traces. According to Microchip AN1312, place a guard ring (ground trace) around touch electrodes and connect it to AVSS, not VSS, to reduce capacitive coupling from adjacent nets. Keep the CTMU current source trace short - long traces add parasitic capacitance that degrades touch sensitivity.
Configure Peripheral Pin Select (PPS) mappings BEFORE enabling the peripheral in firmware; configuring PPS after enabling can cause spurious transitions on the output pin. When migrating code between PIC24F32KA302-I/SP and PIC24F16KA302-I/SP, verify that the reduced SRAM (1 KB vs 2 KB) is sufficient for your stack and heap. The RTCC requires the SOSC crystal on pins 9-10 (or the dedicated SOSC pins on larger packages) - enabling RTCC without the crystal locks up the peripheral.
Estimated: at maximum CPU activity (32 MHz, all peripherals on), the PIC24F32KA302-I/SP consumes roughly 15 mA from a 3.3V supply, dissipating about 50 mW into the 28-SPDIP package. With a typical theta_JA of 60 C/W for the SPDIP-28 package, junction temperature rises only 3C above ambient, so no thermal derating is required. Industrial temperature range is the binding constraint at -40C to +85C operation.
규정 준수 정보
RoHS-compliant lead-free SPDIP-28 package. Not AEC-Q100 qualified in the I/SP variant; choose PIC24F32KA302-E/SP for extended temperature automotive applications.
