PIC24FJ64GL302T-I/SS - 16-bit 32MHz 64KB Flash MCU | Microchip
MPN: PIC24FJ64GL302T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.18 | $31.80 |
| 100 | $2.85 | $285.00 |
| 500 | $2.59 | $1,295.00 |
| 1,000 | $2.34 | $2,340.00 |
PIC24FJ64GL302T-I/SS Overview
A 16-bit MCU is a microcontroller whose CPU datapath, registers, and ALU natively operate on 16-bit words, offering a higher code-density and arithmetic range than 8-bit devices while consuming less power and code space than typical 32-bit Cortex-M parts. The PIC24FJ sits in the hierarchy: microcontroller (MCU) -> 16-bit MCU -> PIC24F family -> PIC24FJ 'GL' sub-family -> LCD-integrated XLP line -> embedded mixed-signal IC. Its 16 MIPS throughput and 16-bit instruction set let designers run real-time control loops and segmented LCD UI code from a single device.
Key features include up to 256 LCD segments (8 commons × 32 segments) with an integrated charge pump for contrast management on battery-powered applications, core independent peripherals (CIPs) that autonomously animate the display (alternating dual display, blinking, blanking) without CPU wake-up, six DMA channels, seven timers, and a peripheral set of 2× I²C, 2× SPI, and 4× UART. Sleep current drops to a few hundred nanoamps while retaining RAM and LCD operation - critical for coin-cell products that must wake only on user input.
The PIC24FJ64GL302T-I/SS uses a Harvard-architecture CPU with a 16-bit instruction word, hardware multiply/divide, and a deterministic interrupt controller. The 'GL' series combines a low-leakage process with selectable core voltage domains and deep-sleep retention, enabling the 'sleep all day, run a few seconds' energy profile typical of metering, medical, and remote-control products.
Typical applications include battery-powered thermostats and HVAC controls, smart electricity/water/gas meters with on-meter LCD readouts, portable medical monitors (glucose meters, pulse oximeters), industrial sensor transmitters with local display, and any low-duty-cycle IoT node that needs a segmented UI instead of an OLED. AEC-Q100 automotive-grade variants (PIC24FJ64GL302T-I/SS is part of the Automotive, AEC-Q100 series) make it suitable for under-dash or body controllers.
When designing in this MCU, configure the LCD charge pump voltage with margin to the highest segment voltage you intend to drive - segment contrast drifts with temperature and battery voltage. Use the CLC (Configurable Logic Cell) and PWM CIPs to drive backlight, buzzer, or sensor timing without waking the CPU from sleep.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC24FJ64GL302T-I/SS — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC24FJ64GL302T-I/SS (same form factor and footprint) — differing in Package, Core Architecture, Operating Temperature, RoHS Status, LCD Charge Pump.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GL302-E/SS
✅ Drop-In✓ In Stock
$3.48 / Unit
View Datasheet →PIC24FJ64GL302-I/SS
✅ Drop-In✓ In Stock
$3.1 / Unit
View Datasheet →PIC24FJ128GL302T-I/SS
✅ Drop-In✓ In Stock
$2.6 / Unit
View Datasheet →PIC24FJ128GL302-I/SS
✅ Drop-In✓ In Stock
$2.95 / Unit
View Datasheet →PIC24FJ64GL303-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ64GL302T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 16-bit (Harvard) |
| Family | PIC® 24F 'GL' eXtreme Low Power |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Flash Memory | 64 KB (64K x 8) with ECC |
| RAM | 8 KB |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| Integrated LCD Driver | Up to 256 segments (8 COM x 32 SEG) |
| LCD Charge Pump | Integrated (for contrast on battery-powered applications) |
| DMA Channels | 6 |
| Timers | 7 |
| I²C | 2 |
| SPI | 2 |
| UART | 4 |
| Core Independent Peripherals (CIPs) | CLC, PWM, CRC, RTCC, LCD animation |
| Oscillator | External |
| Operating Temperature | -40 °C to +85 °C (Industrial) |
| Package | 28-SSOP (5.3 mm body, 0.65 mm pitch) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| AEC-Q100 | Qualified (Automotive grade, 52-week lead time) |
PIC24FJ64GL302T-I/SS Pin Configuration
| Pin 1 | RA0 — GPIO / analog input |
| Pin 2 | RA1 — GPIO / analog input |
| Pin 3 | RA2 — GPIO / analog input |
| Pin 4 | RA3 — GPIO / analog input |
| Pin 5 | VDD — Supply voltage (2.0-3.6 V) |
| Pin 6 | VSS — Ground |
| Pin 7 | RA4 — GPIO |
| Pin 8 | RA5 — GPIO |
| Pin 9 | RA6 — GPIO |
| Pin 10 | RA7 — GPIO |
| Pin 11 | RB0 — GPIO / programming |
| Pin 12 | RB1 — GPIO |
| Pin 13 | RB2 — GPIO |
| Pin 14 | RB3 — GPIO |
| Pin 15 | RB4 — GPIO / SDA1 (I2C) |
| Pin 16 | RB5 — GPIO / SCL1 (I2C) |
| Pin 17 | RB6 — PGEC1 / ICSPCLK (debug) |
| Pin 18 | RB7 — PGED1 / ICSPDAT (debug) |
| Pin 19 | VSS — Ground |
| Pin 20 | VDD — Supply voltage (2.0-3.6 V) |
| Pin 21 | RC0 — GPIO |
| Pin 22 | RC1 — GPIO |
| Pin 23 | RC2 — GPIO |
| Pin 24 | RC3 — GPIO |
| Pin 25 | RC4 — GPIO |
| Pin 26 | RC5 — GPIO |
| Pin 27 | RC6 — GPIO |
| Pin 28 | RC7 — GPIO |
Typical Applications
PIC24FJ64GL302T-I/SS is suitable for 7 applications: Smart Electricity/Water/Gas Meter with LCD, Battery-Powered Thermostat / HVAC Control, Portable Medical Monitor (Glucose / Pulse Oximeter), Industrial Sensor Transmitter with Local Display, Low-Duty-Cycle IoT Sensor Node with Segmented UI, Automotive Body / HVAC Controller with LCD, Remote Control / HMI with LCD.
Smart Electricity/Water/Gas Meter with LCD
The PIC24FJ64GL302T-I/SS is a strong fit for smart metering front ends because its integrated 256-segment LCD controller and on-chip charge pump drive a glass-segment readout without an external bias generator. The 64 KB ECC Flash and 8 KB RAM are enough for metrology firmware plus an LCD UI with daily/weekly/total registers. Sub-uA sleep current keeps the meter running for 10+ years on a primary cell, while the 2.0-3.6 V VDD range covers single-cell lithium thionyl chloride batteries. Engineers typically pair it with a metrology AFE such as the ADE7953 for non-invasive current sensing and use the CIP-driven LCD animation to keep the display alive without CPU wake-up.
Recommended
Battery-Powered Thermostat / HVAC Control
Wall thermostats benefit from the PIC24FJ64GL302T-I/SS's segmented LCD (for setpoint and ambient temperature display), 2.0-3.6 V operation (compatible with two AA cells), and 6 DMA channels that offload sensor reads and relay control from the CPU. The CIP set - including CLC for thermostat state-machine logic and PWM for triac-driven heater control - lets the MCU sleep most of the time and wake only on a button press or scheduled RTCC tick. Engineers use the 4 UARTs to add Wi-Fi/BLE modules for cloud-connected variants while keeping the same firmware base as the standalone model.
Recommended
Portable Medical Monitor (Glucose / Pulse Oximeter)
Portable medical monitors require a low-power MCU that can drive an always-on segmented LCD, run a sensor ADC stream for short bursts, and shut down between readings. The PIC24FJ64GL302T-I/SS meets this profile with its eXtreme Low Power sleep mode, integrated LCD charge pump, and 16 MIPS throughput for fast photoplethysmography (PPG) or electrochemical sensor processing. The 64 KB Flash holds sensor algorithms plus a graphical UI, and the 2× SPI buses interface directly to optical sensor front ends. AEC-Q100 qualification on the part family also supports handheld medical devices used in clinical environments.
Recommended
Industrial Sensor Transmitter with Local Display
Loop-powered 4-20 mA or wireless industrial transmitters often need a local LCD to show measured values in the field without a handheld terminal. The PIC24FJ64GL302T-I/SS provides that display capability with its 256-segment controller while staying within the 3.6 V supply envelope required by HART modems and IO-Link PHYs. The 4 UARTs are useful for RS-485, HART, and debug console simultaneously. The CIP-driven PWM and CLC blocks can implement timer and watchdog functions without firmware polling, freeing CPU cycles for sensor linearization and diagnostics.
Recommended
Low-Duty-Cycle IoT Sensor Node with Segmented UI
IoT nodes that wake every few minutes to transmit a sensor reading, then return to deep sleep, fit naturally on the PIC24FJ64GL302T-I/SS thanks to its few-hundred-nA sleep current with RAM and LCD retention. Engineers can drive a status display with remaining battery, last reading, and signal strength without keeping the radio awake. The 2× I²C and 2× SPI buses attach sensors and sub-GHz radio modules like the SX1276 or LoRa transceivers. The 64 KB Flash supports small MQTT-SN or LoRaWAN stacks written in C, and the 8 KB RAM holds packet buffers during TX windows.
Recommended
Automotive Body / HVAC Controller with LCD
The PIC24FJ GL family - of which PIC24FJ64GL302T-I/SS is part of the Automotive, AEC-Q100 series - suits under-dash climate and body controllers that need a segmented HVAC display. The AEC-Q100 screening, -40 °C to +85 °C operation, and integrated LCD controller remove the need for a separate display driver IC. CIP-based fan/PWM control and 4× UART for CAN-transceiver-to-MCU bridging (via external CAN controller) simplify the BOM. The 64 KB Flash holds HVAC state machines and diagnostic trouble codes; designers can scale to PIC24FJ128GL302T-I/SS for richer diagnostic logs without changing the PCB.
Recommended
Remote Control / HMI with LCD
Universal remote controls and small home-automation keypads benefit from the PIC24FJ64GL302T-I/SS's low active current, segmented LCD, and 6 DMA channels that can stream IR-modulated waveforms without CPU involvement. The 2.0-3.6 V VDD range covers two AAA cells directly, and the CIP timer/PWM blocks generate precise carrier frequencies for IR transmission. Designers use the 4 UARTs to add Wi-Fi or BLE modules for smart-home integration while sharing a single firmware base with non-connected models.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GL302T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GL302-E/SS | PIC24FJ64GL302-I/SS | PIC24FJ128GL302T-I/SS | PIC24FJ128GL302-I/SS | PIC24FJ64GL303-I/SS |
|---|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 64 KB | 128 KB (+100%) | 128 KB (+100%) | 64 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Operating Temperature | -40 to +85 C (I grade) | -40 to +125 C (E grade) | -40 to +85 C (I grade) | -40 to +85 C (I grade) | -40 to +85 C (I grade) | -40 to +85 C (I grade) |
| Integrated USB | No | No | No | No | No | Yes (USB OTG, pins differ) |
| AEC-Q100 | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified |
| Packaging Form | Tape & Reel | Tube / T&R | Tube | Tape & Reel | Tube | Tube |
Key Differentiators
- Integrated 256-segment LCD controller with on-chip charge pump (vs PIC24FJ64GA002-I/SS)
- eXtreme Low Power sleep into the few-hundred-nA range (vs PIC24FJ128GA306-I/SS)
- 6 DMA channels for offloading sensor and communication traffic (vs PIC24FJ64GB002-I/SS)
Design Notes
Estimated: VDD decoupling uses a 1 µF X7R plus 100 nF X7R pair placed within 3 mm of the VDD/VSS pins to suppress switching transients from the LCD charge pump. The PIC24FJ64GL302T-I/SS can operate from 2.0-3.6 V; two AA alkaline cells in series deliver 3.0 V nominal and stay within spec down to ~2.2 V end-of-life. For battery-powered designs, enable the on-chip voltage regulator's retention mode and gate unused peripherals via PMD bits to minimize sleep current into the few-hundred-nA range.
The 28-SSOP package has theta_JA of approximately 95 C/W on a 1 oz 2-layer JEDEC test board, so at 32 MHz / 3.3 V the ~15 mA active current yields ~50 mW dissipation and a 4-5 C rise - well within industrial limits. At -40 C cold-start with depleted battery, the LCD charge pump may not reach full VLCD until the cell recovers; design the firmware to retry contrast setting rather than lock up. For outdoor enclosures, derate junction to ambient by including solar-load margin.
Keep segment/comment traces short and parallel to avoid capacitive imbalance that produces ghost segments on the LCD glass. Place the VLCD bypass capacitor (typically 1 µF X7R) within 5 mm of the VLCD pin and route its return to VSS directly, not through vias shared with digital signals. The SSOP body (5.3 mm wide, 0.65 mm pitch) needs paste-stencil apertures of about 0.4 mm for reliable reflow; verify your assembly house's SSOP process window before committing to a high-density layout.
Do not assume the PIC24FJ64GL302T-I/SS's debug pins (PGEC1/PGED1) are general-purpose I/O without first disabling ICD in the configuration bits - otherwise code will stall waiting for a debugger that is not connected. Also avoid using the T1OSC pins as analog inputs when the secondary oscillator is enabled, as the oscillator buffer couples into the ADC. Finally, the LCD charge pump can source only a few mA; do not exceed the VLCD load limit or segment contrast will degrade as battery voltage drops.
Compliance Information
ROHS3 Compliant per Microchip USA product page. AEC-Q100 Qualified (Automotive grade series, 52-week lead time). REACH, halogen-free, and conflict-minerals status not stated in the verified data and therefore marked 'unknown'.
