PIC24FJ128GA412T-I/BG - 16-bit 32MHz 128KB Flash XLP MCU
MPN: PIC24FJ128GA412T-I/BG ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.32 | $5.32 |
| 10 | $4.78 | $47.80 |
| 100 | $4.05 | $405.00 |
| 500 | $3.62 | $1,810.00 |
| 1,000 | $3.18 | $3,180.00 |
PIC24FJ128GA412T-I/BG Overview
A 16-bit microcontroller (MCU) is a microprocessor core that processes instructions and data 16 bits at a time, sitting in the hierarchy between 8-bit MCUs (e.g., PIC16) and 32-bit MCUs (e.g., PIC32). The PIC24F family sits in Microchip's hierarchy as: PIC24F -> 16-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The 'XLP' (eXtreme Low Power) technology places it in the ultra-low-power MCU category designed for battery-powered and energy-harvesting applications where nanoWatt sleep currents are critical.
Key specifications include 32 MHz maximum CPU speed (8 MIPS), 128KB dual-partition Flash allowing live updates, 16KB RAM, integrated segmented LCD driver (up to 480 segments), 12-bit ADC with 200 ksps, and a hardware crypto engine supporting AES, DES, and 3DES. The 121-TFBGA package supports advanced routing for high-pin-count applications and provides 100+ general-purpose I/O pins.
The PIC24FJ128GA412T-I/BG uses a modified Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and data access. It supports a wide operating voltage range (typically 2.0V-3.6V) and multiple low-power modes including down to nanoWatt sleep currents, making it ideal for IoT edge nodes, medical wearables, and secure connected devices.
Typical applications include secure IoT sensor nodes, low-power medical devices (glucose meters, portable monitors), battery-powered industrial sensors, electronic shelf labels, secure metering (electric/gas/water), and consumer wearables. The integrated LCD driver eliminates the need for an external LCD controller, reducing BOM cost and PCB area.
When designing with this device, leverage the dual-partition Flash for safe over-the-air (OTA) firmware updates. Ensure the crypto module is properly initialized with secure key storage. For LCD applications, calculate segment counts early in design to ensure the selected package has sufficient COM/SEG pin availability.
This page synthesizes distributor pricing, drop-in same-package alternatives (same Microchip PIC24FJ family in TFBGA), and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC24FJ128GA412T-I/BG — 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 PIC24FJ128GA412T-I/BG (same form factor and footprint) — differing in Program Memory (Flash), ADC, Package, Operating Temperature, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ256GA412T-I/BG
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ64GA412T-I/BG
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC24FJ128DA110-I/BG
✅ Drop-In✓ In Stock
$5.25 / Unit
View Datasheet →PIC24FJ1024GA610-I/BG
✅ Drop-In✓ In Stock
$8.2 / Unit
View Datasheet →PIC24FJ128DA110T-I/BG
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.55 / Unit
View Datasheet →PIC24FJ128GA412T-I/BG Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit PIC24F modified Harvard |
| Family | PIC® XLP™ 24F |
| Maximum CPU Speed | 32 MHz (8 MIPS) |
| Program Memory (Flash) | 128 KB (43K x 24 words) |
| RAM | 16 KB |
| Package | 121-TFBGA (10x10 mm) |
| Operating Voltage Range | 2.0 V to 3.6 V |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| ADC | 12-bit, 200 ksps |
| Crypto Module | AES / DES / 3DES hardware engine |
| LCD Driver | Segmented LCD, up to 480 segments |
| Communication Interfaces | UART, SPI, I2C, USB, CAN |
| Flash Partition | Dual partition for live update |
| Low-Power Mode | nanoWatt XLP, sleep current < 1 uA typical |
| Mounting Type | Surface Mount (TFBGA) |
| MSL Level | 3 |
| RoHS Status | Compliant |
PIC24FJ128GA412T-I/BG 121-tfbga (10x10 mm) Pin Configuration Guide
Pin configuration for PIC24FJ128GA412T-I/BG (121-tfbga (10x10 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC24FJ128GA412T-I/BG.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC24FJ128GA412T-I/BG is suitable for 6 applications: Secure IoT Sensor Nodes, Battery-Powered Medical Devices, Industrial Metering (Electric / Gas / Water), Electronic Shelf Labels (ESL), Wearable Consumer Electronics, Secure Connected Home / Building Automation.
Secure IoT Sensor Nodes
The PIC24FJ128GA412T-I/BG is engineered for secure IoT edge sensor nodes where hardware crypto and nanoWatt low-power operation are critical. Its integrated AES/DES/3DES engine eliminates the need for an external security IC, reducing BOM and board area. The 32 MHz CPU supports TLS-style encryption and protocol stacks, while 128KB Flash accommodates full networking stacks plus application code. Sleep currents below 1 uA combined with 2.0V-3.6V supply enable multi-year coin-cell operation in environmental monitoring, asset tracking, and smart agriculture deployments. The dual-partition Flash allows safe OTA firmware rollouts in field-installed devices.
Recommended
Battery-Powered Medical Devices
For portable medical devices such as glucose meters, pulse oximeters, and wearable health monitors, the PIC24FJ128GA412T-I/BG delivers a compelling blend of low-power operation, integrated segmented LCD driving, and secure firmware. The on-chip LCD driver supports up to 480 segments, eliminating an external LCD controller and reducing PCB footprint. NanoWatt XLP technology achieves sub-uA sleep currents critical for extended battery life on a single coin cell. The 12-bit ADC with 200 ksps accurately digitizes biomedical sensor signals, while hardware crypto protects patient data at rest and in transit.
Recommended
Industrial Metering (Electric / Gas / Water)
The PIC24FJ128GA412T-I/BG is well-suited for secure electronic metering where tamper-resistant design, segmented LCD displays, and decades-long battery life are mandatory requirements. Its hardware crypto engine authenticates meter readings to prevent billing fraud, while segmented LCD drivers render multi-digit consumption displays without external components. Wide operating temperature range (-40C to +85C) supports outdoor utility installations, and the dual-partition Flash enables safe remote firmware updates. The 32 MHz CPU runs metrology algorithms and protocol stacks (DLMS/COSEM, M-Bus, wireless M-Bus) concurrently without timing violations.
Recommended
Electronic Shelf Labels (ESL)
The PIC24FJ128GA412T-I/BG drives electronic shelf label designs where battery life measured in years and integrated segmented LCD are essential. Wireless ESL systems need ultra-low sleep current between RF transmissions, which the PIC24F nanoWatt XLP mode satisfies at sub-uA levels. The 12-bit ADC monitors battery voltage for low-battery warnings, and hardware crypto authenticates over-the-air price updates to prevent spoofing. The compact 121-TFBGA package fits space-constrained label enclosures, while the segmented LCD driver eliminates a dedicated LCD controller chip.
Recommended
Wearable Consumer Electronics
For fitness bands, smart watches accessories, and other wearable consumer devices, the PIC24FJ128GA412T-I/BG provides a low-power PIC24F core with integrated display driving and secure communications. The wide 2.0V-3.6V supply supports direct Li-coin cell operation, while nanoWatt sleep modes enable deep standby between user interactions. The hardware crypto engine protects user health data and over-the-air firmware updates. Its 128KB dual-partition Flash accommodates GUI code, sensor fusion algorithms, and BLE/Wi-Fi companion control routines in a single chip footprint.
Recommended
Secure Connected Home / Building Automation
The PIC24FJ128GA412T-I/BG anchors secure connected home and building automation nodes such as smart thermostats, access-control readers, and HVAC control panels. Integrated crypto enables mutual authentication with cloud gateways, while the segmented LCD displays status information without requiring an external controller. CAN bus support interfaces directly with building automation backbones, and USB enables field service updates via direct connection. The 121-TFBGA package provides sufficient I/O for multi-relay control panels and sensor aggregators in a single compact footprint.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ128GA412T-I/BG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ256GA412T-I/BG | PIC24FJ64GA412T-I/BG | PIC24FJ128DA110-I/BG | PIC24FJ1024GA610-I/BG |
|---|---|---|---|---|---|
| Package | 121-TFBGA (10x10 mm) | 121-TFBGA (10x10) - same | 121-TFBGA (10x10) - same | 121-TFBGA (10x10) - same | 121-TFBGA (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 256 KB | 64 KB | 128 KB | 1024 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB |
| Maximum CPU Speed | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) |
| Crypto Engine | AES / DES / 3DES (1 instance) | AES / DES / 3DES (1 instance) | AES / DES / 3DES (1 instance) | AES / DES / 3DES (2 instances, upgraded) | AES / DES / 3DES |
| LCD Driver Segments | Up to 480 | Up to 480 | Up to 480 | Up to 480 | Up to 480 |
| Operating Voltage Range | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
Key Differentiators
- Same-package Flash scaling headroom to 1 MB (vs PIC24FJ64GA412T-I/BG)
- Integrated segmented LCD driver eliminates external controller (vs PIC24FJ128GA310-I/PT (no LCD driver))
- Hardware crypto engine versus software-only solutions (vs PIC24FJ128GA010-I/PT (no crypto engine))
Design Notes
Leverage the PIC24FJ128GA412T-I/BG nanoWatt XLP modes for battery-powered designs: Sleep mode draws < 1 uA typical, Deep Sleep with RTCC draws ~ 340 nA typical, and Retention Sleep preserves SRAM while the core is off. Estimate battery life with: Life (years) = BatteryCapacity(uAh) / (ActiveCurrent * DutyCycle + SleepCurrent * (1 - DutyCycle)) * 8760. For a CR2032 (~220 mAh) at 0.1% duty cycle with 5 mA active, expected life exceeds 8 years.
The 121-TFBGA package has a 10x10 mm body with a 0.8 mm ball pitch requiring precise PCB pad design. Use NSMD (Non-Solder Mask Defined) pads with a 0.4 mm solder mask opening around 0.5 mm pads to optimize reflow yield. Apply microvia-in-pad or dog-bone fan-out for BGA escape routing. Maintain 50-ohm impedance control for high-speed signals (USB, CAN) routed through BGA breakout layers. Always follow Microchip's TBGA layout guidelines for via stitching under the package.
Critical pitfalls: (1) Always erase and verify the inactive Flash partition before OTA write to prevent silent corruption; (2) Initialize the crypto module with secure keys stored in OTP or external secure element, never in plaintext Flash; (3) The LCD driver requires the dedicated charge pump voltage regulator be enabled when driving high-segment-count displays; (4) On 121-TFBGA, several pins are multiplexed with analog functions and must be configured via PPS (Peripheral Pin Select) to avoid conflicts; (5) Vcap pin requires a low-ESR 10 uF ceramic capacitor placed within 5 mm for regulator stability.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified (industrial grade only); not automotive qualified in this variant. Operating temperature range -40C to +85C.
