PIC24F32KA304-I/ML - 32KB Flash XLP 16-bit MCU | Microchip
料号： PIC24F32KA304-I/ML ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.88 | $48.80 |
| 100 | $4.12 | $412.00 |
| 500 | $3.65 | $1,825.00 |
| 1,000 | $3.21 | $3,210.00 |
PIC24F32KA304-I/ML 概述
A 16-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals on a single silicon die. The PIC24F family sits in the hierarchy: MCU -> 16-bit MCU -> PIC24F family -> microcontroller -> embedded processor -> semiconductor. The 16-bit architecture provides enhanced computational performance and C-compiler efficiency over 8-bit PIC MCUs, while the XLP (eXtreme Low Power) technology extends battery life in power-constrained applications through nanoWatt features.
Key features include a 32 MHz internal oscillator, 17 general-purpose I/O pins, multiple communication peripherals (UART, SPI, I2C), a 12-bit ADC with 200 ksps conversion rate, and multiple 16-bit timers. The device operates from 1.8V to 3.6V supply voltage, with a maximum operating temperature range of -40C to +85C in the industrial grade (-I suffix). The 44-QFN package provides a compact footprint with exposed thermal pad.
Technically, the PIC24F32KA304 uses a modified Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and data access. The integrated nanoWatt XLP technology achieves deep-sleep currents below 20 nA with RTCC running, while the peripheral pin select (PPS) feature allows flexible remapping of digital peripherals to I/O pins.
Typical applications include battery-powered IoT sensor nodes, wearable health monitors, remote controls, low-power wireless sensor networks, energy harvesting devices, and consumer electronics requiring extended battery life. The combination of high computational performance, multiple communication interfaces, and ultra-low-power modes makes this MCU particularly suitable for edge computing and connected IoT endpoints.
When designing with this device, ensure decoupling capacitors (100 nF + 10 uF) are placed close to the VDD pins, and that unused I/O pins are configured as outputs to minimize current consumption. The PPS feature requires careful configuration in MPLAB X IDE to avoid peripheral conflicts.
This page synthesizes distributor pricing from DigiKey, drop-in alternatives from Microchip's PIC24F family, and practical design notes not found in the manufacturer datasheet alone.
直接替换替代料： PIC24F32KA304-I/ML ——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： PIC24F32KA304-I/ML （相同外形与封装尺寸） ——差异在于 Core Architecture, Family, Operating Temperature, Package, Timers.
快速对比工具——选择替代料号进行并排对比：
PIC24F32KA304-E/ML
✅ 直接替换✓ 有现货
$2.95 / 个
查看数据手册 →PIC24FV32KA304-I/ML
✅ 直接替换📋 参考替代料（不在目录中）
PIC24F32KA302-I/ML
✅ 直接替换✓ 有现货
$3.2 / 个
查看数据手册 →PIC24F16KA304-I/ML
✅ 直接替换✓ 有现货
$1.85 / 个
查看数据手册 →PIC24F32KA301-I/ML
✅ 直接替换📋 参考替代料（不在目录中）
PIC24F08KM204-I/ML
✅ 直接替换✓ 有现货
$2.31 / 个
查看数据手册 →PIC24F32KA304-I/ML 最大额定值与电气特性
| Core Architecture | PIC24F (16-bit modified Harvard) |
| Family | PIC24F XLP 24F |
| Program Memory (Flash) | 32 KB (11K x 24 words) |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 17 |
| 封装 | 44-QFN (8x8 mm) |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (industrial grade) |
| Communication Peripherals | UART, SPI, I2C |
| Timers | Multiple 16-bit timers |
| XLP Technology | Yes (eXtreme Low Power) |
| RoHS 状态 | Compliant |
| MSL 等级 | 1 |
PIC24F32KA304-I/ML 引脚配置
| 引脚 1 | RP5/RB5 — I/O port pin / remappable peripheral |
| 引脚 2 | VSS — Ground reference |
| 引脚 3 | RP6/RB6/PGEC2 — I/O port pin / ICD clock |
| 引脚 4 | RP7/RB7/PGED2 — I/O port pin / ICD data |
| 引脚 5 | RP8/RB8 — I/O port pin |
| 引脚 6 | RP9/RB9 — I/O port pin |
| 引脚 7 | VDD — Positive supply voltage (1.8V to 3.6V) |
| 引脚 8 | VSS — Ground reference |
| 引脚 9 | OSC1/CLKI/RA1 — Oscillator input / general I/O |
| 引脚 10 | OSC2/CLKO/RA2 — Oscillator output / general I/O |
| 引脚 11 | VREF+/CVREF+/AN0/RA0 — ADC reference positive / analog input |
| 引脚 12 | VREF-/CVREF-/AN1/RA1 — ADC reference negative / analog input |
| 引脚 13 | AN2/RA2 — Analog input 2 / general I/O |
| 引脚 14 | AN3/RA3 — Analog input 3 / general I/O |
| 引脚 15 | RA4 — General purpose I/O |
| 引脚 16 | RA5 — General purpose I/O |
| 引脚 17 | RA6 — General purpose I/O |
| 引脚 18 | RA7 — General purpose I/O |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | VDD — Positive supply voltage (1.8V to 3.6V) |
| 引脚 21 | RC0 — I/O port pin |
| 引脚 22 | RC1 — I/O port pin |
| 引脚 23 | RC2 — I/O port pin |
| 引脚 24 | RC3 — I/O port pin |
| 引脚 25 | RC4 — I/O port pin |
| 引脚 26 | RC5 — I/O port pin |
| 引脚 27 | RC6 — I/O port pin |
| 引脚 28 | RC7 — I/O port pin |
| 引脚 29 | RD0 — I/O port pin |
| 引脚 30 | RD1 — I/O port pin |
| 引脚 31 | RD2 — I/O port pin |
| 引脚 32 | RD3 — I/O port pin |
| 引脚 33 | RD4 — I/O port pin |
| 引脚 34 | RD5 — I/O port pin |
| 引脚 35 | VSS — Ground reference |
| 引脚 36 | VDD — Positive supply voltage (1.8V to 3.6V) |
| 引脚 37 | RB0/PGEC1 — I/O port pin / programming clock |
| 引脚 38 | RB1/PGED1 — I/O port pin / programming data |
| 引脚 39 | RB2 — I/O port pin |
| 引脚 40 | RB3 — I/O port pin |
| 引脚 41 | RP4/RB4 — I/O port pin / remappable peripheral |
| 引脚 42 | RP3/RB3 — I/O port pin / remappable peripheral |
| 引脚 43 | RP2/RB2 — I/O port pin / remappable peripheral |
| 引脚 44 | RP1/RB1 — I/O port pin / remappable peripheral |
典型应用
PIC24F32KA304-I/ML 适用于 7 应用s: Battery-Powered IoT Sensor Nodes, Wearable Health Monitors, Remote Controls and Consumer Electronics, Low-Power Wireless Sensor Networks, Energy Harvesting Devices, Industrial Sensor Modules, Smart Home Edge Devices.
Battery-Powered IoT Sensor Nodes
The PIC24F32KA304-I/ML's XLP technology and 32 KB Flash make it well-suited for battery-powered IoT sensor nodes operating from coin cells or 2xAA batteries. The 32 MHz CPU speed supports on-device sensor data processing and edge analytics, while deep-sleep currents below 1 uA extend battery life to years. Place decoupling capacitors (100 nF + 10 uF) close to the VDD pins, and configure unused I/O as outputs to minimize quiescent draw.
推荐
Wearable Health Monitors
The PIC24F32KA304-I/ML's compact 44-QFN (8x8 mm) package and XLP features are ideal for wearable health monitors such as fitness bands, smartwatches, and continuous glucose monitors. The 32 KB Flash accommodates BLE stack firmware and sensor processing algorithms, while 17 I/O pins support multiple sensor interfaces (accelerometer, heart rate, SpO2). The 1.8V to 3.6V VDD range is compatible with single-cell lithium-ion battery systems.
推荐
Remote Controls and Consumer Electronics
The PIC24F32KA304-I/ML supports remote control applications including TV remotes, smart home controllers, and wireless keyboard receivers. Its 32 MHz speed handles IR protocol encoding/decoding and RF communication stacks, while XLP deep-sleep modes preserve battery life over years of standby. The integrated peripherals (UART, SPI, I2C) interface directly with RF transceivers and IR LED drivers without external glue logic.
推荐
Low-Power Wireless Sensor Networks
The PIC24F32KA304-I/ML is well-suited for wireless sensor network end nodes using protocols like Zigbee, LoRa, or proprietary Sub-GHz. The 32 KB Flash fits networking protocol stacks, while 32 MHz CPU processes sensor data before transmission. Combined with nanoWatt XLP sleep modes, end nodes can operate for 5-10 years on a single battery, per Microchip's typical XLP application examples.
推荐
Energy Harvesting Devices
The PIC24F32KA304-I/ML's ultra-low deep-sleep current and 1.8V minimum VDD are ideal for energy harvesting applications including self-powered wireless switches, solar-powered environmental sensors, and vibration-energy nodes. The device operates from harvested sources down to 1.8V, while deep-sleep with RTCC running keeps total system current under 1 uA, ensuring reliable operation even with intermittent energy availability.
推荐
Industrial Sensor Modules
The PIC24F32KA304-I/ML's industrial temperature grade (-40C to +85C) and robust 16-bit architecture suit industrial sensor modules for process control, HVAC monitoring, and factory automation. The 12-bit ADC with 200 ksps handles analog sensor inputs (4-20 mA loops, thermistors, pressure transducers), while XLP modes reduce thermal dissipation in sealed enclosures. The 44-QFN package fits within compact DIN-rail or panel-mount form factors.
推荐
Smart Home Edge Devices
The PIC24F32KA304-I/ML fits smart home edge devices including smart door locks, occupancy sensors, and HVAC controllers. Its 32 KB Flash stores Zigbee or Thread protocol stacks plus application firmware, while the 32 MHz CPU handles on-device processing to reduce cloud round-trips. The peripheral pin select (PPS) feature allows flexible routing of UART/SPI/I2C to physical pins, simplifying PCB layout for compact smart home form factors.
推荐
推荐产品汇总
工程参考数据： PIC24F32KA304-I/ML ——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 | PIC24F32KA304-E/ML | PIC24FV32KA304-I/ML | PIC24F32KA302-I/ML | PIC24F16KA304-I/ML | PIC24F32KA301-I/ML |
|---|---|---|---|---|---|---|
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB | 32 KB |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.0 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| 5V Tolerant I/O | No | No | Yes | No | No | No |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40C to +85C (industrial) | -40C to +125C (extended) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| I/O Pins | 17 | 17 | 17 | 14 | 17 | 13 |
| XLP Technology | Yes | Yes | Yes | Yes | Yes | Yes |
关键差异点
- Wide operating voltage range with 5V-tolerant option （对比 PIC24F32KA304-E/ML)
- Higher memory density in same QFN package （对比 PIC24F16KA304-I/ML)
- Maximum I/O count in 44-QFN family （对比 PIC24F32KA301-I/ML)
设计说明
Place a 100 nF ceramic decoupling capacitor as close as possible to each VDD pin (multiple VDD pins on the 44-QFN package). Add a single 10 uF bulk capacitor near the device for transient load handling. For battery-powered designs, configure unused I/O pins as outputs low to minimize quiescent current, and use Sleep mode aggressively between sensor readings to leverage XLP technology's sub-1 uA deep-sleep currents.
The 44-QFN (8x8 mm) package has an exposed thermal pad (EP) on the underside that must be soldered to a PCB pad of at least equal size for mechanical reliability and thermal dissipation. Connect this EP to the ground plane through multiple thermal vias to improve heat spreading. Keep analog and digital traces separated, and route the OSC1/OSC2 traces short and symmetric to minimize EMI.
PIC24F device pins have a maximum voltage of 3.6V and are NOT 5V tolerant per the datasheet. Do not connect 5V signals directly to any I/O pin. For 5V systems, use the PIC24FV32KA304 variant (5V tolerant) or external level shifters. Also, ensure the MCLR pin (if present) is pulled high through a 10 kOhm resistor for normal operation; leaving it floating prevents code execution.
Estimated: At 32 MHz CPU clock and full peripheral operation, the device consumes approximately 15 mA. With the 44-QFN package thermal resistance of theta_JA around 28 C/W, the junction temperature rise is roughly 12C above ambient at full active load. No heatsink is needed for typical embedded applications, but ensure adequate PCB copper area under the EP for thermal relief in sealed enclosures.
合规信息
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified; for automotive applications consider PIC24F automotive-grade variants.