PIC24FJ64GA704-I/PT - 32MHz 64KB Flash MCU | Microchip
MPN： PIC24FJ64GA704-I/PT ✓ 啟用中PIC24FJ64GA704-I/PT 概覽
A microcontroller is a programmable semiconductor that integrates a processor core, memory, and peripherals on one device. PIC24F devices occupy the 16-bit embedded-control segment between simpler 8-bit controllers and more computationally intensive 32-bit microprocessors. They are commonly used when a design requires deterministic control, mixed analog and digital operation, low-power behavior, and a broad selection of I/O without a separate system-on-chip platform.
The PIC24FJ64GA704-I/PT provides up to 64 KB of ECC flash and 16 KB of RAM. Its 12-bit ADC performs conversions at up to 200 ksps and supports as many as 14 analog inputs. Three comparators support threshold and system-monitoring functions, while the CTMU peripheral assists with capacitive-touch sensing. The 32 MHz maximum clock rate provides 16 MIPS, as identified in the distributor product listing.
This ordering code identifies the industrial-temperature variant in a 44-pin TQFP package. The “I” designator denotes the extended-temperature grade, while “/PT” identifies the TQFP package and its orderable package variant. The device combines up to 36 I/O positions with integrated analog functions, reducing the need for external converters, comparators, and touch-sensing circuitry in suitable designs.
Typical uses include industrial control panels, environmental monitoring equipment, sensor interfaces, touch controls, compact data-acquisition systems, and low-power embedded products. The 12-bit ADC is particularly useful when measurements must cover a wider dynamic range than an 8-bit converter, while the CTMU can simplify touch-sensitive user interfaces. The 64 KB memory footprint supports more capable firmware than many entry-level 8-bit controllers.
Designers should account for the ADC acquisition time, comparator latency, and the device's low-power operating modes when planning signal paths and duty cycles. Use the manufacturer’s pin-description table, electrical characteristics, and reference design guidance when assigning analog inputs, debugger connections, programming pins, and decoupling. The exposed package construction also requires attention to PCB thermal relief and soldering profile.
This product overview combines the manufacturer's device description, distributor technical summaries, package information, application guidance, and a strict same-footprint replacement review. It focuses on the engineering characteristics that distinguish the PIC24FJ64GA704-I/PT from lower-memory variants and devices in different package configurations.
直接替換替代品，適用於 PIC24FJ64GA704-I/PT — 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： PIC24FJ64GA704-I/PT （相同外形與佔位） — 差異在於 Package, ADC, Comparators, Core Architecture, Family.
PIC24FJ64GA704T-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ64GA004-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ64GA704-I/PT 最大額定值與電氣特性
| Product Type | 16-bit PIC24F general-purpose microcontroller |
| Maximum CPU Frequency | 32 MHz |
| Instruction Throughput | 16 MIPS |
| Program Flash Memory | 64 KB |
| Flash Organization | 22K x 24 bits |
| Flash Memory Type | ECC flash |
| RAM Memory | 16 KB |
| ADC Resolution | 12 bits |
| ADC Sampling Rate | 200 ksps |
| Analog Input Count | Up to 14 |
| Comparator Count | 3 |
| I/O Count | 36 |
| Operating Voltage Range | 2 V to 3.6 V |
| 工作溫度範圍 | -40°C to +85°C |
| 封裝 | 44-pin TQFP, 10 mm x 10 mm |
| 安裝類型 | Surface mount |
| Program Memory Type | Flash |
| Peripheral Support | DMA, CTMU, ADC, and comparators |
| Low-Power Feature | eXtreme Low Power |
| RoHS 狀態 | Compliant |
PIC24FJ64GA704-I/PT 44-pin tqfp, 10 mm x 10 mm 腳位配置指南
PIC24FJ64GA704-I/PT（44-pin tqfp, 10 mm x 10 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： PIC24FJ64GA704-I/PT.
請參閱 資料表 以查看完整腳位配置。
典型應用
PIC24FJ64GA704-I/PT 適用於 6 應用s: Industrial Sensor Acquisition, Capacitive Touch Control Panel, Environmental Monitoring Terminal, Compact Data Acquisition System, Programmable Control Panel, Low-Power Embedded Controller.
Industrial Sensor Acquisition
The PIC24FJ64GA704-I/PT fits industrial sensor-acquisition equipment that requires more measurement resolution than an 8-bit ADC without moving to a larger processor platform. Its 12-bit ADC operates at up to 200 ksps and supports as many as 14 analog inputs, allowing temperature, pressure, level, and current signals to be sampled through a shared analog front end. The 32 MHz CPU rate and 16 KB of RAM support acquisition scheduling, filtering, and control logic. In an industrial controller, the MCU can capture sensor channels, apply calibration, supervise thresholds with three comparators, and communicate results over an available serial interface. The -40°C to +85°C ordering option suits equipment deployed across temperature-controlled industrial environments, subject to the complete product's qualification requirements.
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Capacitive Touch Control Panel
The PIC24FJ64GA704-I/PT is appropriate for compact capacitive-touch control panels because its CTMU peripheral supports capacitive measurement and its 12-bit ADC provides a shared acquisition resource. At a maximum frequency of 32 MHz, the controller can scan electrodes, apply calibration and filtering, update a display, and monitor panel state. The 16 KB of RAM allows more working space than an 8 KB variant for touch baselines, debounce state, and communication buffers. In a human-machine interface, CTMU-driven measurements can help reduce the component count compared with a design using dedicated touch controllers. PCB implementation should follow the manufacturer's electrode and grounding guidance, with filtering and shielding considered for cables, display lines, and high-noise power systems.
推薦
Environmental Monitoring Terminal
The PIC24FJ64GA704-I/PT can serve as the central controller in an environmental monitoring terminal combining slow-changing sensor measurements with local indication and communications. Up to 14 analog inputs support temperature, humidity, light, and air-quality sensor stages, while the 12-bit ADC's 200 ksps capability provides additional bandwidth when a faster sampled channel is required. The 64 KB of ECC flash accommodates application firmware and parameter storage, and the 16 KB RAM provides space for calibration data and communication buffers. Three comparators can provide threshold detection independent of regular sampling tasks. For battery- or field-powered equipment, the manufacturer's low-power modes should be evaluated against the required sampling interval and communications schedule to balance responsiveness with average energy consumption.
推薦
Compact Data Acquisition System
The PIC24FJ64GA704-I/PT is well matched to a compact 16-bit data-acquisition system requiring more processing capability than an 8-bit controller but not the overhead of a complex 32-bit processor. Its 12-bit ADC supports conversion rates up to 200 ksps, enabling acquisition from multiple analog channels while the 32 MHz CPU performs scaling, filtering, status tracking, and data packing. The 64 KB ECC flash provides nonvolatile program storage, and the 16 KB RAM can support sample buffers and protocol handling. Three comparators are useful for immediate threshold events or out-of-range conditions. In an instrument, analog input conditioning remains essential; use suitable impedance, anti-alias filtering, grounding, and reference arrangements based on the manufacturer electrical-characteristics guidance.
推薦
Programmable Control Panel
The PIC24FJ64GA704-I/PT can implement a programmable machine or equipment control panel that combines digital inputs, analog monitoring, local feedback, and communications. Its 36 I/O positions provide connectivity for switches, indicators, encoders, and external control signals, while the 12-bit ADC expands monitoring capability to sensors and potentiometer-style feedback. Three comparators support simple limit detection, and CTMU can add touch controls without requiring a separate sensing controller. The 64 KB of ECC flash supports panel firmware, while 16 KB of RAM accommodates debouncing, display updates, and short protocol buffers. In a harsh industrial enclosure, keep analog and communication routes separated from switching nodes and follow the manufacturer's decoupling and layout guidance to preserve measurement quality.
推薦
Low-Power Embedded Controller
The PIC24FJ64GA704-I/PT is appropriate for a low-power embedded controller that must combine sensor monitoring with limited local processing. Its eXtreme Low Power positioning supports designs that spend substantial time in reduced-activity states and wake to perform scheduled measurements. The 16-bit architecture operates at up to 32 MHz and provides 16 MIPS, while 64 KB of ECC flash and 16 KB of RAM are sufficient for compact control firmware and modest working sets. The ADC, comparators, and CTMU can reduce the number of discrete components in a design that performs sensing, thresholding, and touch detection. The practical energy benefit depends on the selected operating mode, peripheral activity, and wake source, so evaluate the device's power modes and the timing of analog conversions in the finished firmware rather than relying on CPU frequency alone.
推薦
推薦產品摘要
工程參考資料，適用於 PIC24FJ64GA704-I/PT — 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 | PIC24FJ64GA704T-I/PT | PIC24FJ64GA004-I/PT |
|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (10 mm x 10 mm) | 44-pin TQFP (10 mm x 10 mm) | 44-pin TQFP (10 mm x 10 mm) |
| CPU Architecture | 16-bit PIC24F | 16-bit PIC24F | 16-bit PIC24F |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz |
| Instruction Throughput | 16 MIPS | 16 MIPS | 16 MIPS |
| Program Flash Memory | 64 KB ECC flash | 64 KB | 64 KB |
| RAM Memory | 16 KB | 16 KB | 8 KB, 50% less than the target |
主要差異化特點
- Larger RAM than the GA004 alternative (對比PIC24FJ64GA004-I/PT)
- Matches the closest documented GA704 alternative on principal ratings (對比PIC24FJ64GA704T-I/PT)
- Combines control and mixed-signal resources in one device (對比PIC24FJ64GA004-I/PT)
設計說明
Place the MCU's required input and output bypass capacitors close to their corresponding power and ground pins, following the Microchip Technology reference schematic and layout guidance. Keep analog inputs away from high-current switching paths and route them over a continuous ground plane when possible. The TQFP-44 footprint requires careful land-pattern alignment and adequate solder-paste volume; verify the package drawing against the chosen PCB library before fabrication.
Treat analog and digital return currents as separate considerations even though the device uses a common ground reference. Place the analog front end near the assigned ADC or CTMU pins, keep sensor traces short, and add filtering appropriate to the sensor bandwidth and measurement accuracy. The 200 ksps ADC capability is a maximum conversion rate, not a guarantee of useful full-rate accuracy without suitable source impedance, acquisition timing, reference stability, and layout.
Design the 2 V to 3.6 V supply with enough margin for all operating conditions and peripheral loading. Use the manufacturer electrical-characteristics tables to select the regulator topology, verify the analog voltage-reference requirements, and account for current consumed by the ADC, comparators, communication interfaces, and I/O pins. Low-power operation should be validated against wake sources and the scheduled duty cycle because average consumption depends on firmware-controlled peripheral activity.
Do not substitute PIC24FJ64GA004-I/PT without auditing RAM usage. Its 8 KB RAM is 50% lower than the target's 16 KB, which can affect DMA buffers, stacked context, communication frames, and data acquisition storage. Before adopting either listed alternative, compare package pins, peripheral assignments, interrupt vectors, startup behavior, programming configuration, and low-power functions in the manufacturer data sheet and migrate the firmware under realistic load.
合規資訊
The JLCPCB product record identifies the device as RoHS compliant. No verified REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification declaration was identified.