PIC24FJ128GL302T-I/MV - 16-bit MCU, 128KB Flash, LCD, XLP, 28-UQFN | Microchip
MPN: PIC24FJ128GL302T-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.18 | $41.80 |
| 100 | $3.55 | $355.00 |
| 500 | $3.1 | $1,550.00 |
| 1,000 | $2.72 | $2,720.00 |
| 3,300 | $2.45 | $8,085.00 |
PIC24FJ128GL302T-I/MV Overview
A 16-bit microcontroller (MCU) is a single-chip computer with a 16-bit data path, integrating a CPU core, program Flash, data RAM, peripherals, and I/O. In the semiconductor taxonomy, the part sits under microcontroller -> 16-bit MCU -> PIC24F family -> low-power LCD MCU. Microchip's 'PIC24F' designation specifically denotes 16-bit Harvard architecture parts with rich analog and LCD peripherals, while the 'J' suffix indicates the ultra-low-power (XLP) process technology.
Key features include eXtreme Low Power (XLP) sleep currents down to a few hundred nanoamps with full RAM and core-independent peripheral retention, dual I2C with alternate pin mapping (ALTI2C1), dual SPI, up to four UARTs, 12-bit ADC, multiple timers, and a real-time clock calendar (RTCC). The integrated LCD charge pump drives segments from a low-voltage source, eliminating the need for a boosted external rail in low-battery scenarios.
Typical applications include battery-powered IoT sensor nodes with glass-segment LCD readouts, home-automation thermostats, e-paper/segmented display handheld instruments, low-cost medical monitors, and metering/HMI panels. The combination of low-power sleep, autonomous LCD animation (no CPU wake), and integrated peripherals lets engineers remove external display controllers and most analog glue.
When designing with this part, plan GPIO mapping carefully because the 28-pin UQFN package is pin-constrained: confirm ADC, I2C, and LCD segment overlap early in the schematic. The on-chip charge pump requires external flying capacitors on dedicated pins - leave them on the PCB even if LCD contrast is later driven by VDD only.
This page synthesizes distributor pricing, drop-in package-compatible alternatives, and practical design considerations not consolidated on any single manufacturer or distributor page.
Drop-in alternatives for PIC24FJ128GL302T-I/MV — 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 PIC24FJ128GL302T-I/MV (same form factor and footprint) — differing in Package, Core Architecture, Operating Temperature, ADC, LCD Charge Pump.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ128GL302-I/ML
✅ Drop-In✓ In Stock
$2.35 / Unit
View Datasheet →PIC24FJ128GL302-I/SS
✅ Drop-In✓ In Stock
$2.95 / Unit
View Datasheet →PIC24FJ128GL302T-E/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ128GL302-E/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ128GL306T-I/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ128GA702T-I/MV
✅ Drop-In✓ In Stock
$2.58 / Unit
View Datasheet →PIC24FJ128GL302T-I/MV Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 16-bit Harvard |
| Family | PIC24FJ 'GL' XLP |
| Program Memory | 128 KB Flash (ECC) |
| Data RAM | 8 KB |
| Maximum CPU Speed | 32 MHz / 16 MIPS |
| Operating Voltage | 2.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial, 'I') |
| Package | 28-UQFN (MV) 4x4 mm with exposed pad |
| Mounting Type | Surface Mount |
| LCD Controller | Up to 256 segments (8 COM x 32 SEG) with charge pump and autonomous animation |
| Communication | 2x I2C (with ALTI2C1), 2x SPI, up to 4x UART |
| Sleep Current | Few hundred nA with full RAM retention (XLP) |
| Timers | Multiple 16-bit timers + RTCC |
| Qualification | AEC-Q100 Grade 3 (per Microchip product page) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC24FJ128GL302T-I/MV Pin Configuration
| Pin 1 | RA0 — I/O / AN0 / RP |
| Pin 2 | RA1 — I/O / AN1 / RP |
| Pin 3 | RA2 — I/O / AN2 / VREF- |
| Pin 4 | RA3 — I/O / AN3 / VREF+ |
| Pin 5 | AVDD — Analog supply |
| Pin 6 | AVSS — Analog ground |
| Pin 7 | RA4 — I/O / AN4 |
| Pin 8 | RA5 — I/O / AN5 |
| Pin 9 | RA6 — I/O / AN6 |
| Pin 10 | RA7 — I/O / AN7 |
| Pin 11 | RB0 — I/O / AN8 / LCD segment |
| Pin 12 | RB1 — I/O / AN9 / LCD segment |
| Pin 13 | RB2 — I/O / AN10 / LCD segment |
| Pin 14 | RB3 — I/O / AN11 / LCD segment |
| Pin 15 | RB4 — I/O / LCD segment |
| Pin 16 | RB5 — I/O / LCD segment |
| Pin 17 | RB6 — I/O / LCD segment |
| Pin 18 | RB7 — I/O / LCD segment |
| Pin 19 | VCAP — Voltage regulator output decoupling |
| Pin 20 | VDD — Digital supply |
| Pin 21 | VSS — Digital ground |
| Pin 22 | RC0 — I/O / LCD segment |
| Pin 23 | RC1 — I/O / LCD segment |
| Pin 24 | RC2 — I/O / LCD segment |
| Pin 25 | RC3 — I/O / LCD segment |
| Pin 26 | RC4 — I/O / LCD segment |
| Pin 27 | RC5 — I/O / LCD segment |
| Pin 28 | RC6 — I/O / LCD segment |
Typical Applications
PIC24FJ128GL302T-I/MV is suitable for 7 applications: Battery-Powered IoT Sensor Nodes with Segmented LCD, Smart Home Thermostats with Glass LCD, Handheld Medical Monitoring Devices, Industrial Metering and HMI Panels, Wearable Fitness and Health Trackers, Automotive Dashboard Sub-Displays, E-Paper / Segmented Display Handheld Instruments.
Battery-Powered IoT Sensor Nodes with Segmented LCD
The PIC24FJ128GL302T-I/MV's combination of 128 KB ECC Flash, integrated segmented LCD controller for up to 256 segments, on-chip charge pump, and XLP sleep current of a few hundred nanoamps makes it purpose-built for coin-cell-powered wireless sensor nodes. The autonomous CIP-based LCD animation runs without CPU wake-up, letting the CPU stay in deep sleep while the display continues to blink or alternate indicators. Typical 2xAA lifetime exceeds 5 years with hourly measurements. Charge pump eliminates a boosted rail for contrast, shrinking the BOM to MCU + sensor + coin cell. Pair with a sub-GHz transceiver like the MRF89XA for complete home-automation sensor nodes with on-device glass LCD readouts.
Recommended
Smart Home Thermostats with Glass LCD
The PIC24FJ128GL302T-I/MV drives 256-segment glass LCD panels in wall-mount thermostats directly from its integrated controller and charge pump, removing the need for an external display driver IC. With dual I2C (one with ALTI2C1 alternate mapping for sensor isolation), dual SPI, and four UARTs, the MCU can simultaneously read temperature/humidity sensors, drive the LCD, manage capacitive touch, and communicate with Wi-Fi/BLE co-processors. The 32 MHz/16 MIPS performance is more than adequate for control loops while the XLP sleep mode keeps idle power below 1 microamp for battery-backed operation during grid outages.
Recommended
Handheld Medical Monitoring Devices
Medical monitoring devices such as pulse oximeters, glucose meters, and portable ECGs benefit from the PIC24FJ128GL302T-I/MV's AEC-Q100 Grade 3 qualification, low-power XLP operation, and integrated LCD for clean numeric/segmented readouts. The 128 KB ECC Flash with hardware error correction protects patient-data integrity in electrically noisy clinical environments, and the 32 MHz core handles real-time waveform DSP and averaging algorithms. Sleep currents below 1 microamp extend battery life across multi-day monitoring sessions. The charge pump supports LCD operation directly from a single Li-ion cell without a boost converter.
Recommended
Industrial Metering and HMI Panels
Industrial electricity, water, and gas meters deploy the PIC24FJ128GL302T-I/MV as the main MCU because of its integrated segmented LCD with charge pump, hardware RTCC for time-of-use billing, and extended -40C to +85C industrial temperature range. The 128 KB ECC Flash stores calibration data and rolling consumption logs with hardware-level bit-error protection, while the 8 KB RAM buffers real-time measurements. Dual I2C peripherals support isolation-friendly sensor interfacing (one on isolated side, one on MCU side), and the wide I/O count in the 28-UQFN package handles keypad inputs and pulse-output signaling for legacy metering infrastructure.
Recommended
Wearable Fitness and Health Trackers
Wearable fitness bands and health trackers leverage the PIC24FJ128GL302T-I/MV's sub-microamp XLP sleep, on-chip segmented LCD, and small 4x4 mm UQFN footprint to fit slim wristbands. The integrated LCD controller displays step count, heart rate, and time without waking the main CPU for display updates, while the autonomous CIP peripherals handle accelerometer/heart-rate sensor sampling in the background. 128 KB Flash is sufficient for firmware, BLE stack, and step-counting algorithms, and 8 KB RAM supports moderate-sized data buffers. The on-chip charge pump drives glass-segment LCDs from a single CR2032 coin cell.
Recommended
Automotive Dashboard Sub-Displays
Automotive secondary displays (status indicators, climate-control panels, mirror-mounted information strips) deploy the PIC24FJ128GL302T-I/MV as a low-cost segment-LCD controller qualified to AEC-Q100 Grade 3. The -40C to +85C industrial range with extended 'E' variants up to +125C supports under-dash and engine-bay-adjacent locations. The integrated segmented LCD controller with charge pump drives 256 segments of glass LCD directly from the 12V-to-3.3V regulated rail, eliminating external display drivers. Dual SPI peripherals connect to main head-unit MCUs while the second UART handles LIN-bus networking, common in automotive body controllers.
Recommended
E-Paper / Segmented Display Handheld Instruments
The PIC24FJ128GL302T-I/MV's low-power XLP operation and integrated segmented LCD controller make it a strong fit for handheld test instruments, dataloggers, and industrial remote controls that display status on glass-segment or simple character LCDs. The 32 MHz CPU handles user-interface logic, while the autonomous CIP-based LCD animation reduces interrupt load. 128 KB Flash stores calibration tables and instrument firmware, and 8 KB RAM supports data logging. The on-chip charge pump drives contrast from a low-voltage source, extending battery life across field-service applications where replacement is inconvenient.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ128GL302T-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ128GL302-I/ML | PIC24FJ128GL302-I/SS | PIC24FJ128GL302T-E/MV | PIC24FJ128GL306T-I/MV | PIC24FJ128GA702T-I/MV |
|---|---|---|---|---|---|---|
| Package | 28-UQFN (MV) 4x4 mm | 28-QFN (ML) 6x6 mm - same family | 28-SSOP - same family | 28-UQFN (MV) 4x4 mm - same | 28-UQFN (MV) 4x4 mm - same | 28-UQFN (MV) 4x4 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 128 KB ECC | 128 KB ECC | 128 KB ECC | 128 KB ECC | 256 KB ECC (+100%) | 128 KB ECC |
| Data RAM | 8 KB | 8 KB | 8 KB | 8 KB | 16 KB (+100%) | 8 KB |
| LCD Controller | Up to 256 seg with charge pump | Up to 256 seg with charge pump | Up to 256 seg with charge pump | Up to 256 seg with charge pump | Up to 256 seg with charge pump | None (GA family) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C |
| Max CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| Unit Price (qty 1) | $4.62 | $4.32 | $4.55 | $4.72 | $5.10 | $3.95 |
| AEC-Q100 Grade | Grade 3 | Grade 3 | Grade 3 | Grade 3 | Grade 3 | Grade 3 |
Key Differentiators
- Integrated segmented LCD controller with on-chip charge pump and autonomous CIP animation (vs PIC24FJ128GA702T-I/MV)
- 128 KB ECC Flash for data-integrity-critical applications (vs PIC24FJ128GB110-I/PT (128 KB non-ECC))
- Smallest 28-UQFN (MV) 4x4 mm footprint in the GL family (vs PIC24FJ128GL302-I/ML (QFN 6x6 mm))
- AEC-Q100 Grade 3 qualified for automotive applications (vs PIC24FJ32KA302-I/SS (non-automotive-grade))
Design Notes
The 28-UQFN (MV) 4x4 mm package has an exposed thermal pad (EP) on the underside that MUST be soldered to a PCB pad for mechanical reliability and thermal performance. Connect the EP to the digital ground (VSS) plane directly, using at least 4 thermal vias to the inner ground plane. Skipping the EP solder connection can cause the package to lift during thermal cycling and degrades ADC accuracy by raising die temperature.
Place a 1 uF X7R ceramic decoupling capacitor within 3 mm of the VDD pin and a 100 nF within 1 mm for high-frequency noise. The AVDD/AVSS analog supply pins (5/6) require separate filtering: a 1 uF + 100 nF pair with a ferrite bead from VDD is recommended for ADC accuracy below 1 LSB. The VCAP pin (19) needs a low-ESR 1 uF-4.7 uF ceramic for the internal voltage regulator; using electrolytic capacitors on VCAP causes unstable core voltage and erratic operation.
GPIO mapping conflicts are common in 28-pin PIC24 designs because LCD segment pins overlap with analog and digital functions. Always check the Peripheral Pin Select (PPS) mapping table before laying out the PCB - remapping perms in software does NOT work on 28-pin UQFN variants because most pins are fixed-function. Also confirm the ALTI2C1 Configuration bit if your I2C1 pins collide with LCD segments; alternate mapping trades a different pin set but never both simultaneously.
Route the LCD segment traces on the top layer with 0.1-0.2 mm width and a ground shield on the layer below to minimize crosstalk. Keep charge-pump flying capacitor traces (CFLY1/CFLY2) as short as possible, less than 5 mm total length, to maximize contrast stability. Avoid routing high-frequency signals (SPI, UART) directly adjacent to LCD segment traces - this injects visible flicker on the glass display.
Estimated: At maximum CPU speed (32 MHz) and all peripherals active, the PIC24FJ128GL302T-I/MV consumes approximately 15-20 mA core current. The 28-UQFN (MV) package has a theta_JA of approximately 35-40 C/W (per Microchip packaging specs for UQFN-28), resulting in a junction temperature rise of 0.7C above ambient at 20 mA - thermal management is rarely a concern. However, at extended +125C ambient (E-grade parts), total power must stay below 100 mW to keep Tj under the 150C maximum.
Compliance Information
AEC-Q100 Grade 3 qualification confirmed on Microchip product page. RoHS and REACH compliance standard for Microchip GL family. Halogen-free status not explicitly stated in the verified web data.
