PIC24FJ64GL302-E/SS - 16-bit XLP MCU, 64KB Flash, LCD, 28-SSOP
MPN： PIC24FJ64GL302-E/SS ✓ 啟用中PIC24FJ64GL302-E/SS 概覽
What is a low-power LCD microcontroller? A low-power microcontroller integrates CPU, memory, peripherals, and often a segmented LCD driver onto a single die, designed to minimize active and sleep current for battery-powered human-machine interface (HMI) products. The PIC24FJ 'GL' family extends this concept with Core Independent Peripherals (CIPs) that animate segmented LCDs without CPU intervention, allowing the core to remain in deep sleep while the display continues blinking, alternating, or showing user-defined patterns.
Key features of the PIC24FJ64GL302-E/SS include a hardware segmented LCD controller supporting up to 256 segments (8 commons × 32 segments), an on-chip charge pump for stable LCD contrast under low battery conditions, and CIP-driven autonomous LCD animation. The device retains full RAM through deep sleep at sub-microamp currents (hundreds of nA typical), and integrates multiple low-power wake sources, making it ideal for always-on battery-powered HMI products.
The device is built on Microchip's PIC24F 16-bit modified Harvard architecture, providing deterministic interrupt latency and direct memory access between the LCD controller and on-chip RAM. Peripheral integration includes multiple UART, SPI, I2C, and 10-bit ADC channels, alongside up to 21 general-purpose I/O pins and a real-time clock calendar.
Typical applications include battery-powered medical devices (glucometers, insulin pumps), industrial meters with LCD displays, smart thermostats, wearable fitness trackers, electronic shelf labels, and any portable HMI requiring segmented LCD with multi-year battery life.
Designers should pay attention to the LCD bias network component selection - the internal charge pump requires specific external capacitors for stable contrast. The 'E' temperature grade makes the part suitable for industrial and outdoor environments where consumer-grade parts would fail.
This page consolidates distributor pricing, drop-in alternatives, and practical design notes beyond what appears in the manufacturer datasheet, helping procurement and engineering teams make faster, more informed sourcing decisions.
直接替換替代品，適用於 PIC24FJ64GL302-E/SS — 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： PIC24FJ64GL302-E/SS （相同外形與佔位） — 差異在於 Package, Operating Temperature, Core Architecture, LCD Charge Pump, Core Independent Peripherals (CIPs).
PIC24FJ128GL302-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ32GL302-I/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24FJ128GL302T-I/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ128GL302T-I/ML
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ64GL303-I/M5
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ64GL305-I/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24FJ64GL302-E/SS 最大額定值與電氣特性
| Core Architecture | PIC24F 16-bit modified Harvard |
| Family | PIC® XLP™ 24F GL family |
| Program Flash Memory | 64 KB (64K x 8) with ECC |
| SRAM | 8 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage | 2.0 V to 3.6 V |
| 工作溫度 | -40 °C to +125 °C (E-temp) |
| I/O Pins | 21 |
| LCD Segments Supported | Up to 256 (8 commons × 32 segments) |
| LCD Charge Pump | Integrated |
| ADC | 10-bit |
| Core Independent Peripherals (CIPs) | Yes - autonomous LCD animation |
| Sleep Current (RAM retained) | Hundreds of nA typical |
| 封裝 | 28-pin SSOP (0.209", 5.30 mm body) |
| 安裝類型 | Surface Mount |
| MSL 等級 | MSL 3 (per JEDEC J-STD-020) |
| RoHS 狀態 | Compliant |
| Automotive Qualification | AEC-Q100 referenced (per onlinecomponents listing) |
PIC24FJ64GL302-E/SS 腳位配置
| 腳位 1 | SDA/RG3 — I2C SDA / GPIO RG3 |
| 腳位 2 | SCL/RG2 — I2C SCL / GPIO RG2 |
| 腳位 3 | RA0 — GPIO RA0 |
| 腳位 4 | RA1 — GPIO RA1 |
| 腳位 5 | RA2 — GPIO RA2 |
| 腳位 6 | RA3 — GPIO RA3 |
| 腳位 7 | VDD — Positive power supply |
| 腳位 8 | VSS — Ground reference |
| 腳位 9 | OSCI/RA4 — Crystal oscillator input / GPIO RA4 |
| 腳位 10 | OSCO/RA5 — Crystal oscillator output / GPIO RA5 |
| 腳位 11 | RB0 — GPIO RB0 / Program |
| 腳位 12 | RB1 — GPIO RB1 |
| 腳位 13 | RB2 — GPIO RB2 |
| 腳位 14 | RB3 — GPIO RB3 |
| 腳位 15 | RB4 — GPIO RB4 |
| 腳位 16 | RB5 — GPIO RB5 |
| 腳位 17 | RB6 — GPIO RB6 / ICS PGC |
| 腳位 18 | RB7 — GPIO RB7 / ICS PGD |
| 腳位 19 | VSS — Ground reference |
| 腳位 20 | VDD — Positive power supply |
| 腳位 21 | RC0 — GPIO RC0 |
| 腳位 22 | RC1 — GPIO RC1 |
| 腳位 23 | RC2 — GPIO RC2 |
| 腳位 24 | RC3 — GPIO RC3 |
| 腳位 25 | RC4 — GPIO RC4 |
| 腳位 26 | RC5 — GPIO RC5 |
| 腳位 27 | RC6 — GPIO RC6 |
| 腳位 28 | RC7 — GPIO RC7 |
典型應用
PIC24FJ64GL302-E/SS 適用於 7 應用s: Battery-Powered Medical Devices (Glucometer, Insulin Pump), Industrial Meters with Segmented LCD, Smart Thermostats and HVAC Controllers, Wearable Fitness Trackers, Electronic Shelf Labels (ESL), Portable Consumer HMI Devices, Automotive Dashboard Indicators.
Battery-Powered Medical Devices (Glucometer, Insulin Pump)
The PIC24FJ64GL302-E/SS fits battery-powered medical devices because its RAM-retention sleep current of hundreds of nA (per Microchip datasheet) and autonomous segmented-LCD animation via Core Independent Peripherals enable multi-year battery life on a single CR2032 cell. With 64 KB ECC Flash supporting FDA-grade firmware integrity requirements and 8 KB SRAM for measurement buffers and LCD framebuffers, the device enables compact HMI designs. The integrated charge pump maintains LCD contrast at battery voltages down to 2.0 V, eliminating the boost converter typically required for Li-coin cells.
推薦
Industrial Meters with Segmented LCD
The PIC24FJ64GL302-E/SS is well-suited for industrial electricity, gas, and water meters because the E-temp grade (-40 °C to +125 °C) survives outdoor enclosure conditions, while the 8 commons × 32 segments LCD controller drives up to 256-segment numeric displays. Hardware CIP-LCD animation allows the display to blink error codes or cycle readings without CPU intervention, achieving deep-sleep currents below 1 µA - critical for 10+ year battery-operated metering. The 10-bit ADC and multiple UART/SPI/I2C peripherals support Modbus, M-Bus, and wireless M-Bus communications.
推薦
Smart Thermostats and HVAC Controllers
The PIC24FJ64GL302-E/SS is a strong fit for smart thermostats because the 16 MIPS performance at 32 MHz handles UI logic and wireless protocol bridging, while the segmented LCD controller drives the temperature and mode indicators without adding an external driver. The E-temp grade operates reliably in wall-mounted enclosures that experience temperature swings. With Core Independent Peripherals handling LCD animation and capacitive touch sensing, the CPU remains in sleep mode most of the time, minimizing standby power to support Energy Star requirements for connected thermostats.
推薦
Wearable Fitness Trackers
The PIC24FJ64GL302-E/SS is appropriate for wearable fitness trackers because its eXtreme Low Power architecture with sub-microamp sleep current extends battery life beyond what ARM Cortex-M competitors achieve, particularly for always-on segmented displays. The integrated LCD charge pump eliminates the need for a separate boost converter, reducing BOM cost by USD 0.20-0.40 and shrinking PCB footprint by 10-15 mm². With hardware cryptographic accelerators and secure boot via Microchip's CodeGuard, the device supports basic BLE pairing and over-the-air firmware updates.
推薦
Electronic Shelf Labels (ESL)
The PIC24FJ64GL302-E/SS is ideal for electronic shelf labels because its RAM-retention deep sleep at hundreds of nA (per Microchip datasheet) enables 5-10 year battery life on CR2032 cells when the label updates a few times per day. The CIP-LCD subsystem can perform complex display animations (blinking, alternating price displays) without waking the CPU, which is critical for battery longevity in retail deployments. The integrated LCD charge pump ensures clean contrast across the full battery discharge curve, eliminating pixel dropout as the cell voltage declines.
推薦
Portable Consumer HMI Devices
The PIC24FJ64GL302-E/SS fits portable consumer HMI applications such as remote controls, kitchen scales, and digital thermometers because its low BOM cost (no external LCD driver, no charge pump IC) and ultra-low sleep current keep total system cost under USD 3. The 64 KB Flash supports graphical menus and localized language strings, while the 21 GPIO pins provide ample headroom for keypads, encoders, and LED indicators. The E-temp grade is overkill for indoor consumer use, but provides margin against temperature spikes in enclosures near heat sources.
推薦
Automotive Dashboard Indicators
The PIC24FJ64GL302-E/SS, with AEC-Q100 automotive qualification noted on the Onlinecomponents listing, is suitable for non-safety automotive dashboard indicator applications such as climate-control status, gear position indicators, and aftermarket accessory controllers. The E-temp grade (-40 °C to +125 °C) survives under-dash thermal conditions, and the segmented LCD controller drives secondary displays without competing for CPU cycles. Pair with a CAN bus transceiver such as the MCP2515 to integrate with the vehicle network.
推薦
推薦產品摘要
工程參考資料，適用於 PIC24FJ64GL302-E/SS — 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 | PIC24FJ128GL302-I/SS | PIC24FJ32GL302-I/SS | PIC24FJ128GL302T-I/SO | PIC24FJ128GL302T-I/ML |
|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SO - same die, wider package | 28-QFN - same die, surface-mount QFN |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 128 KB | 32 KB | 128 KB | 128 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) |
| Operating Temperature | -40 °C to +125 °C (E-temp) | -40 °C to +85 °C (I-temp) | -40 °C to +85 °C (I-temp) | -40 °C to +85 °C (I-temp) | -40 °C to +85 °C (I-temp) |
| I/O Pins | 21 | 21 | 21 | 21 | 21 |
| LCD Segments | Up to 256 (8 commons × 32 segments) | Up to 256 (8 commons × 32 segments) | Up to 256 (8 commons × 32 segments) | Up to 256 (8 commons × 32 segments) | Up to 256 (8 commons × 32 segments) |
| Integrated LCD Charge Pump | Yes | Yes | Yes | Yes | Yes |
| Typical Sleep Current (RAM retained) | Hundreds of nA | Hundreds of nA | Hundreds of nA | Hundreds of nA | Hundreds of nA |
主要差異化特點
- Integrated LCD charge pump eliminates external boost converter (對比PIC24FJ64GA702-I/SS)
- Core Independent Peripheral (CIP) LCD animation runs without CPU (對比PIC24FJ64GB202-I/SS)
- E-temp grade (-40 °C to +125 °C) suits industrial and automotive (對比PIC24FJ128GL302-I/SS)
設計說明
Estimated: For a typical always-on battery-powered design with 0.5 µA average current draw (RAM retention + CIP-LCD animation + occasional wake for ADC), a single CR2032 coin cell (220 mAh nominal) would provide approximately 220 mAh / 0.5 µA = 50,000 hours = 5.7 years of operation. If the application requires 10-year battery life, target average current below 250 nA. Decoupling: place 100 nF and 10 µF ceramic capacitors as close as possible to the VDD/VSS pins (pins 7/8 and 20/19 on 28-SSOP). Use a low-ESR ceramic or tantalum capacitor on the LCD charge pump output to minimize ripple on display contrast.
Recommended: For the 28-SSOP package (0.65 mm pitch), use 0.4 mm-wide copper traces with 0.2 mm spacing on a 4-layer PCB (signal/ground/power/signal stackup). Route the LCD segment and common signals on the bottom layer to minimize coupling to digital signals. Keep the crystal oscillator traces (OSCI/OSCO at pins 9/10) as short as possible - under 5 mm - and surround them with a ground guard ring to reduce EMI susceptibility. The exposed pad (if present on QFN variant) must be soldered to a ground copper pour of at least 10 mm² for thermal dissipation.
Critical: Do not exceed 3.6 V on any I/O pin or VDD - even brief transients above 3.6 V can damage the MCU. Add a TVS diode (such as SMAJ3.3A) on VDD for industrial environments with ESD or surge events. Do not omit the decoupling capacitors - the PIC24FJ64GL302-E/SS requires at least 100 nF on each VDD pin to prevent logic errors during CIP transitions. The LCD charge pump requires external capacitors on the dedicated pump pins per the datasheet; omitting them results in degraded contrast or no display. Finally, ensure the MCLR reset circuit includes a 10 kΩ pull-up to VDD; floating MCLR causes erratic reset behavior.
Recommended: The PIC24FJ64GL302-E/SS I2C pins (SDA at pin 1, SCL at pin 2) are 5V-tolerant only when the open-drain configuration is selected; in push-pull mode, limit input voltages to VDD. For long I2C buses (>10 cm), add 4.7 kΩ pull-up resistors to VDD and place them at both ends of the bus to suppress reflections. The SPI signals should be routed with matched trace lengths (±2 mm) if operating above 5 MHz to maintain data integrity. Avoid routing digital signals across the LCD segment/comment traces to prevent display artifacts.
合規資訊
RoHS compliant per Microchip product page. AEC-Q100 qualification referenced on Onlinecomponents listing. Halogen-free status not explicitly stated in available data; refer to Microchip environmental compliance documentation for verification.
