PIC24FJ128GL302T-I/SS - 16-bit 32MHz MCU 128KB Flash LCD | Microchip
MPN: PIC24FJ128GL302T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.94 | $1,470.00 |
| 1,000 | $2.6 | $2,600.00 |
PIC24FJ128GL302T-I/SS Overview
A 16-bit microcontroller (MCU) is an embedded computing device that processes instructions and data on a 16-bit-wide data path, providing a balanced trade-off between 8-bit simplicity and 32-bit performance. Within the broader taxonomy, the PIC24FJ belongs to the 16-bit MCU category, sits under the Flash microcontroller umbrella, and is part of the Microchip PIC24F sub-family optimized for ultra-low-power (XLP) operation. Compared to 8-bit PIC MCUs, the PIC24F doubles register width, doubles program-memory efficiency (16-bit instruction word), and adds DSP-aware instructions while retaining the deterministic interrupt model Microchip is known for.
Key features include sleep current measured in only a few hundred nanoamps while retaining complete RAM and register state, integrated segmented LCD driver with charge pump support, multiple communication interfaces (2x I2C, 2x SPI, 4x UART), and 6 Direct Memory Access (DMA) channels. The device also supports up to 16 channels of 12-bit ADC, two analog comparators, and a real-time clock/calendar with RTCC retention down to VBAT mode. These CIPs allow deterministic peripheral operation without CPU intervention, reducing active-mode power and freeing the CPU for application code.
The 'GL' family is fabricated on an ultra-low-power process and pairs a 16-bit modified Harvard architecture with on-chip voltage regulation, deep-sleep modes, and a peripheral trigger system. Code is executed from Flash via a 3-stage pipeline with single-cycle instruction fetch, and the device supports in-circuit serial programming (ICSP) plus live update of peripheral configuration.
Typical applications include battery-powered metering with LCD readout, medical glucose and patient monitors, low-cost IoT sensor nodes with displays, e-paper price tags, and industrial HMI panels. The integrated segmented LCD controller and nanoamp-level sleep currents are the primary differentiators versus general-purpose PIC24F parts.
When designing with this part, choose SSOP for moderate-density boards and route the segmented LCD pins directly to the glass with proper bias resistors. Use the XLP deep-sleep modes aggressively for battery-life optimization, and verify VBAT retention current from the manufacturer datasheet before committing to coin-cell power. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC24FJ128GL302T-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 PIC24FJ128GL302T-I/SS (same form factor and footprint) — differing in Package, Operating Temperature, MSL Level, Core Architecture, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ128GL302-I/SS
✅ Drop-In✓ In Stock
$2.95 / Unit
View Datasheet →PIC24FJ128GA202-I/SS
✅ Drop-In✓ In Stock
$2.74 / Unit
View Datasheet →PIC24FJ128GA202-E/SS
✅ Drop-In✓ In Stock
$2.6 / Unit
View Datasheet →PIC24FJ32KA302-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F16KA301T-I/SS
✅ Drop-In✓ In Stock
$1.68 / Unit
View Datasheet →PIC24FJ128GL302T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F (16-bit modified Harvard) |
| CPU Core | PIC24 RISC |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 128 KB (128K x 8) with ECC |
| RAM | 8 KB |
| ADC Channels | 9 channels, 12-bit and 10-bit capable |
| Communication Interfaces | 2x I2C, 2x SPI, 4x UART |
| DMA Channels | 6 |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 28-SSOP (5.30 mm body, 0.65 mm pitch) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Sleep Current (XLP) | A few hundred nA (with RAM retention) |
| Integrated LCD Driver | Yes, segmented LCD controller |
| Lead-Free | Yes |
PIC24FJ128GL302T-I/SS Pin Configuration
| Pin 1 | RA0 — General I/O / AN0 / SEG23 |
| Pin 2 | RA1 — General I/O / AN1 / SEG22 |
| Pin 3 | RA2 — General I/O / AN2 / VREF- |
| Pin 4 | RA3 — General I/O / AN3 / VREF+ |
| Pin 5 | RA4 — General I/O / AN4 / SEG21 |
| Pin 6 | RA5 — General I/O / AN5 / SEG20 |
| Pin 7 | RA6 — General I/O / OSC2 / CLKO |
| Pin 8 | RA7 — General I/O / OSC1 / CLKI |
| Pin 9 | VDD — Positive supply voltage |
| Pin 10 | VSS — Ground reference |
| Pin 11 | RB0 — General I/O / AN8 / SEG0 / PGED1 |
| Pin 12 | RB1 — General I/O / AN9 / SEG1 / PGEC1 |
| Pin 13 | RB2 — General I/O / AN10 / SEG2 |
| Pin 14 | RB3 — General I/O / AN11 / SEG3 |
| Pin 15 | RB4 — General I/O / AN12 / SEG4 |
| Pin 16 | RB5 — General I/O / SEG5 / PGED2 |
| Pin 17 | RB6 — General I/O / SEG6 / PGEC2 |
| Pin 18 | RB7 — General I/O / SEG7 |
| Pin 19 | RB8 — General I/O / SEG8 |
| Pin 20 | RB9 — General I/O / SEG9 |
| Pin 21 | RB10 — General I/O / SEG10 |
| Pin 22 | RB11 — General I/O / SEG11 |
| Pin 23 | RB12 — General I/O / SEG12 |
| Pin 24 | RB13 — General I/O / SEG13 |
| Pin 25 | RB14 — General I/O / SEG14 |
| Pin 26 | RB15 — General I/O / SEG15 |
| Pin 27 | AVDD — Analog positive supply |
| Pin 28 | AVSS — Analog ground reference |
Typical Applications
PIC24FJ128GL302T-I/SS is suitable for 6 applications: Battery-Powered Metering with LCD Display, Medical Glucose and Patient Monitors, IoT Sensor Nodes with Display, Industrial HMI Panels, Electronic Shelf Labels and Price Tags, Wearable Fitness and Health Bands.
Battery-Powered Metering with LCD Display
The PIC24FJ128GL302T-I/SS is purpose-built for battery-powered metering such as electricity, water, or gas meters with segmented LCD readouts. Its integrated segmented LCD controller drives up to hundreds of segments directly from the chip without an external driver, and its XLP deep-sleep current of only a few hundred nanoamps with full RAM retention enables 10+ year coin-cell life. The 128 KB ECC Flash provides ample room for tariff scheduling and calibration data, while 6 DMA channels offload sensor reads and LCD refresh from the CPU, keeping average current well below 10 uA in real-world metering profiles.
Recommended
Medical Glucose and Patient Monitors
In portable medical devices like blood-glucose meters and patient wearables, the PIC24FJ128GL302T-I/SS delivers the right mix of low power, integrated LCD, and analog precision. Its 9-channel 12-bit ADC handles strip-impedance measurement and battery voltage monitoring, while the segmented LCD driver displays results without external display hardware. Sleep currents down to a few hundred nanoamps allow weeks of standby on a single CR2032 cell. The 128 KB ECC Flash supports secure boot and on-device calibration, and 8 KB RAM is sufficient for glucose-trend logging between transmissions.
Recommended
IoT Sensor Nodes with Display
For IoT end nodes that need a local status display - such as environmental monitors, smart thermostats, and industrial wireless sensors - the PIC24FJ128GL302T-I/SS combines BLE-friendly sleep modes, a segmented LCD for at-a-glance readings, and multiple serial interfaces (2x I2C, 2x SPI, 4x UART) for sensor and radio expansion. The 16 MIPS CPU core handles Modbus, MQTT-SN, or proprietary RF stacks while DMA channels keep the LCD updated independently. Combined with the few-hundred-nA XLP sleep current, the device is well-suited for energy-harvested or multi-year-battery wireless sensor products.
Recommended
Industrial HMI Panels
Low-cost industrial HMI panels - such as HVAC controllers, security keypads, and appliance control boards - benefit from the PIC24FJ128GL302T-I/SS's integrated segmented LCD driver, multiple UART channels (4x), and Core Independent Peripherals that handle key-scanning, encoder inputs, and LCD refresh without CPU intervention. The 28-SSOP package fits on compact panel boards, while the 128 KB Flash supports multilingual UI strings and bootloader-based field updates via UART. Industrial temperature grade (-40C to +85C) ensures operation in factory-floor and outdoor-enclosure environments.
Recommended
Electronic Shelf Labels and Price Tags
Electronic shelf labels (ESL) and battery-powered price tags demand multi-year life, integrated display, and wireless duty cycle - exactly the use case for the PIC24FJ128GL302T-I/SS. The XLP deep-sleep modes with full RAM retention allow the MCU to remain in standby at nanoamp currents while a sub-GHz or 2.4 GHz radio wakes it only for price updates. The integrated segmented LCD driver supports multi-digit numeric or alphanumeric displays, and DMA-driven LCD refresh keeps the CPU asleep during display updates, minimizing average current.
Recommended
Wearable Fitness and Health Bands
For wearable fitness bands and step-counters with simple segmented displays, the PIC24FJ128GL302T-I/SS pairs a 16-bit core with 16 MIPS of performance, 128 KB Flash for activity algorithms, and a segmented LCD driver that displays steps, heart rate, and battery state without an external display chip. DMA channels continuously sample an accelerometer or PPG sensor while the LCD updates independently, and the few-hundred-nA XLP sleep current preserves battery life between user interactions. The 28-SSOP package suits slim wristband PCBs.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ128GL302T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ128GL302-I/SS | PIC24FJ128GA202-I/SS | PIC24FJ128GA202-E/SS | PIC24FJ32KA302-I/SS | PIC24F16KA301T-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 |
| Core | PIC24F 16-bit | PIC24F 16-bit | PIC24F 16-bit | PIC24F 16-bit | PIC24F 16-bit | PIC24F 16-bit |
| Maximum Frequency | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 128 KB | 128 KB | 128 KB | 128 KB | 32 KB | 16 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 2 KB |
| Integrated LCD Driver | Yes (segmented) | Yes (segmented) | No | No | No | No |
| XLP Deep-Sleep with RAM Retention | Yes (few hundred nA) | Yes (few hundred nA) | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C |
Key Differentiators
- Integrated segmented LCD driver with CIP support (vs PIC24FJ128GA202-I/SS)
- Lower deep-sleep current with RAM retention (vs PIC24FJ32KA302-I/SS)
- 4x UART, 2x I2C, 2x SPI for multi-bus sensor networking (vs PIC24F16KA301T-I/SS)
Design Notes
Estimated: at VDD = 3.3V, the PIC24FJ128GL302T-I/SS draws approximately 5-7 mA active at 32 MHz CPU clock and a few hundred nA in XLP deep-sleep mode with full RAM retention per the Microchip product page. For coin-cell designs, target less than 1% duty cycle to keep average current below 10 uA, which yields roughly 5-10 years on a CR2032 (220 mAh). Use Sleep mode + RTCC wake rather than Idle mode to minimize current draw.
Place the 28-SSOP decoupling network close to the VDD/VSS and AVDD/AVSS pin pairs: a 100 nF ceramic on each analog/digital supply, plus a bulk 1 uF-10 uF ceramic on VDD. Route AVSS directly to the ground plane with a single via to avoid ground loops in ADC measurements. The segmented LCD SEG/COM traces can be run directly under the glass connector; keep them away from switching power traces to avoid injection of switching noise into the LCD bias generation.
Do not omit the 100 nF bypass on VDD; PIC24F cores can exhibit brown-out resets or erratic ADC readings without adequate high-frequency decoupling. When migrating from PIC24FJ128GA202-I/SS to PIC24FJ128GL302T-I/SS, verify that the LCD segment pin assignments still match - the GL family reuses pins differently for the integrated LCD driver. Always check the most recent errata sheet on the Microchip product page before locking down firmware.
Compliance Information
RoHS and lead-free compliance confirmed by Microchip product page and DigiKey listing. Industrial temperature grade (-40C to +85C). AEC-Q100 qualification not applicable for this non-automotive part.
