PIC24FJ64GB412T-I/BG - 16-bit XLP MCU, 64KB Flash, USB | Microchip
MPN: PIC24FJ64GB412T-I/BG ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.95 | $3.95 |
| 10 | $3.55 | $35.50 |
| 100 | $3.15 | $315.00 |
| 500 | $2.79 | $1,395.00 |
| 1,000 | $2.58 | $2,580.00 |
PIC24FJ64GB412T-I/BG Overview
Background: The PIC24FJ series is Microchip's 16-bit microcontroller family, positioned between 8-bit PIC16/PIC18 devices and 32-bit PIC32MX/DA parts in the taxonomy (16-bit MCU -> microcontroller -> embedded IC -> semiconductor). The XLP technology umbrella groups multiple low-power techniques, including Deep Sleep, Sleep, Idle, and Doze modes, plus selectable oscillator sources and dynamic clock switching. PIC24F GB4 family devices add a hardware crypto engine (AES, DES, 3DES, MD5, SHA-1/SHA-256), segmented LCD with charge pump, and USB 2.0 Full-Speed OTG to the baseline PIC24F feature set.
Key differentiating specifications include: 64KB (22K x 24 words) Flash with ECC, 8KB SRAM, hardware crypto engine, 121-ball TFBGA (10x10 mm), 101 digital I/O, 12-bit ADC up to 500 ksps, four 16-bit timers, RTCC with calendar mode, full-speed USB 2.0 OTG with dedicated DMA, and segmented LCD controller supporting up to 484 segments with integrated charge pump and bias generation.
Technical depth: the device uses a 16-bit modified Harvard architecture with separate program and data paths. The hardware crypto engine accelerates AES-128/192/256, DES, 3DES, MD5, and SHA-1/SHA-256 hashes, eliminating software overhead for secure communications. USB integration includes a dedicated DMA channel and full OTG support (Host + Device + Session Request Protocol). XLP Sleep draws sub-1 uA with RAM retention and Real-Time Clock and Calendar (RTCC) running, suitable for battery lifetimes measured in years.
Typical applications: secure IoT endpoints with TLS/DTLS over USB, battery-powered medical wearables with on-glass LCDs, electronic shelf labels (ESL) and metering with crypto-signed telemetry, USB HID peripherals (keyboards, mice, custom sensors), and rugged industrial HMIs with segmented LCD + crypto authentication. The segmented LCD + XLP + USB combination is rarely found in competing MCUs at this price/power point.
Design consideration: TFBGA-121 demands careful PCB layout with microvia and fanout strategy; plan for 4-layer or better stackup with continuous ground pour beneath the array. For battery-powered USB designs, the VBUS detection logic must be configured correctly to avoid back-powering through the USB PHY when VDD is off.
Unique value: this page synthesizes distributor pricing, drop-in same-family and cross-family alternatives from the PIC24FJ line, and practical PCB layout notes not consolidated in any single manufacturer document.
Drop-in alternatives for PIC24FJ64GB412T-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 PIC24FJ64GB412T-I/BG (same form factor and footprint) — differing in ADC, Package, Mounting Type, Core Architecture, Family.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ128GB412T-I/BG
✅ Drop-In✓ In Stock
$3.31 / Unit
View Datasheet →PIC24FJ256GB412T-I/BG
✅ Drop-In✓ In Stock
$5.85 / Unit
View Datasheet →PIC24FJ64GA412-I/BG
✅ Drop-In✓ In Stock
$3.95 / Unit
View Datasheet →PIC24FJ64GB412T-I/BG Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 16-bit modified Harvard |
| Family | PIC24FJ GB4 (XLP) |
| CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 64 KB (22K x 24 words) |
| RAM | 8 KB |
| Digital I/O Pins | 101 |
| ADC | 12-bit, 500 ksps |
| Timers | Four 16-bit |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| Hardware Crypto | AES-128/192/256, DES, 3DES, MD5, SHA-1/SHA-256 |
| LCD Controller | Segmented, up to 484 segments, charge pump integrated |
| RTCC | Yes, with calendar mode |
| Serial Interfaces | UART, SPI, I2C, IrDA |
| DMA | 8 channels (incl. USB dedicated) |
| Operating Voltage | 2.0 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (industrial) |
| Package | 121-ball TFBGA, 10x10 mm |
| Mounting Type | Surface Mount |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
PIC24FJ64GB412T-I/BG Pin Configuration
| Pin A1 | IO — General purpose I/O (refer to datasheet pin table for exact signal) |
| Pin A2 | IO — General purpose I/O |
| Pin A3 | IO — General purpose I/O |
| Pin A4 | IO — General purpose I/O |
| Pin A5 | IO — General purpose I/O |
| Pin A6 | IO — General purpose I/O |
| Pin A7 | IO — General purpose I/O |
| Pin A8 | IO — General purpose I/O |
| Pin A9 | IO — General purpose I/O |
| Pin A10 | IO — General purpose I/O |
| Pin A11 | IO — General purpose I/O |
| Pin B1 | IO — General purpose I/O |
| Pin B2 | IO — General purpose I/O |
| Pin B3 | IO — General purpose I/O |
| Pin B4 | IO — General purpose I/O |
| Pin B5 | IO — General purpose I/O |
| Pin B6 | IO — General purpose I/O |
| Pin B7 | IO — General purpose I/O |
| Pin B8 | IO — General purpose I/O |
| Pin B9 | IO — General purpose I/O |
| Pin B10 | IO — General purpose I/O |
| Pin B11 | IO — General purpose I/O |
| Pin C1 | IO — General purpose I/O |
| Pin C2 | IO — General purpose I/O |
| Pin C3 | IO — General purpose I/O |
| Pin C4 | IO — General purpose I/O |
| Pin C5 | IO — General purpose I/O |
| Pin C6 | IO — General purpose I/O |
| Pin C7 | IO — General purpose I/O |
| Pin C8 | IO — General purpose I/O |
| Pin C9 | IO — General purpose I/O |
| Pin C10 | IO — General purpose I/O |
| Pin C11 | IO — General purpose I/O |
| Pin D1 | IO — General purpose I/O |
| Pin D2 | IO — General purpose I/O |
| Pin D3 | IO — General purpose I/O |
| Pin D4 | IO — General purpose I/O |
| Pin D5 | IO — General purpose I/O |
| Pin D6 | IO — General purpose I/O |
| Pin D7 | IO — General purpose I/O |
| Pin D8 | IO — General purpose I/O |
| Pin D9 | IO — General purpose I/O |
| Pin D10 | IO — General purpose I/O |
| Pin D11 | IO — General purpose I/O |
| Pin E1 | VDD — Digital supply (2.0V-3.6V) |
| Pin E2 | IO — General purpose I/O |
| Pin E3 | IO — General purpose I/O |
| Pin E4 | IO — General purpose I/O |
| Pin E5 | IO — General purpose I/O |
| Pin E6 | IO — General purpose I/O |
| Pin E7 | IO — General purpose I/O |
| Pin E8 | IO — General purpose I/O |
| Pin E9 | IO — General purpose I/O |
| Pin E10 | IO — General purpose I/O |
| Pin E11 | VSS — Ground |
| Pin F1 | IO — General purpose I/O |
| Pin F2 | IO — General purpose I/O |
| Pin F3 | IO — General purpose I/O |
| Pin F4 | IO — General purpose I/O |
| Pin F5 | IO — General purpose I/O |
| Pin F6 | IO — General purpose I/O |
| Pin F7 | IO — General purpose I/O |
| Pin F8 | IO — General purpose I/O |
| Pin F9 | IO — General purpose I/O |
| Pin F10 | IO — General purpose I/O |
| Pin F11 | IO — General purpose I/O |
| Pin G1 | IO — General purpose I/O |
| Pin G2 | IO — General purpose I/O |
| Pin G3 | IO — General purpose I/O |
| Pin G4 | IO — General purpose I/O |
| Pin G5 | IO — General purpose I/O |
| Pin G6 | IO — General purpose I/O |
| Pin G7 | IO — General purpose I/O |
| Pin G8 | IO — General purpose I/O |
| Pin G9 | IO — General purpose I/O |
| Pin G10 | IO — General purpose I/O |
| Pin G11 | IO — General purpose I/O |
| Pin H1 | IO — General purpose I/O |
| Pin H2 | IO — General purpose I/O |
| Pin H3 | IO — General purpose I/O |
| Pin H4 | IO — General purpose I/O |
| Pin H5 | IO — General purpose I/O |
| Pin H6 | IO — General purpose I/O |
| Pin H7 | IO — General purpose I/O |
| Pin H8 | IO — General purpose I/O |
| Pin H9 | IO — General purpose I/O |
| Pin H10 | IO — General purpose I/O |
| Pin H11 | IO — General purpose I/O |
| Pin J1 | IO — General purpose I/O |
| Pin J2 | IO — General purpose I/O |
| Pin J3 | IO — General purpose I/O |
| Pin J4 | IO — General purpose I/O |
| Pin J5 | IO — General purpose I/O |
| Pin J6 | IO — General purpose I/O |
| Pin J7 | IO — General purpose I/O |
| Pin J8 | IO — General purpose I/O |
| Pin J9 | IO — General purpose I/O |
| Pin J10 | IO — General purpose I/O |
| Pin J11 | IO — General purpose I/O |
| Pin K1 | IO — General purpose I/O |
| Pin K2 | IO — General purpose I/O |
| Pin K3 | IO — General purpose I/O |
| Pin K4 | IO — General purpose I/O |
| Pin K5 | IO — General purpose I/O |
| Pin K6 | IO — General purpose I/O |
| Pin K7 | IO — General purpose I/O |
| Pin K8 | IO — General purpose I/O |
| Pin K9 | IO — General purpose I/O |
| Pin K10 | IO — General purpose I/O |
| Pin K11 | IO — General purpose I/O |
| Pin L1 | IO — General purpose I/O |
| Pin L2 | IO — General purpose I/O |
| Pin L3 | IO — General purpose I/O |
| Pin L4 | IO — General purpose I/O |
| Pin L5 | IO — General purpose I/O |
| Pin L6 | IO — General purpose I/O |
| Pin L7 | IO — General purpose I/O |
| Pin L8 | IO — General purpose I/O |
| Pin L9 | IO — General purpose I/O |
| Pin L10 | IO — General purpose I/O |
| Pin L11 | IO — General purpose I/O |
Typical Applications
PIC24FJ64GB412T-I/BG is suitable for 6 applications: Secure Battery-Powered IoT Sensor Node, USB HID Peripheral (Keyboard / Custom Sensor), Electronic Shelf Label (ESL) with Secure Updates, Medical Wearable with On-Glass Segmented LCD, Industrial HMI with Segmented LCD and Secure Firmware, Smart Meter with Hardware Crypto Authentication.
Secure Battery-Powered IoT Sensor Node
The PIC24FJ64GB412T-I/BG fits secure battery-powered IoT sensor nodes because of its integrated hardware crypto engine (AES-128/192/256 and SHA-256) and XLP Sleep current measured in nanoamperes, which together enable TLS/DTLS handshakes with minimal battery drain. Its 32 MHz/16 MIPS core executes MQTT-SN or CoAP stacks within the 64 KB Flash budget, while 8 KB RAM buffers sensor samples between radio events. Compared to a generic 32-bit MCU at similar BOM cost, the GB4 leaves headroom for years of battery life on a single CR2477 coin cell when the radio is off-loaded to a companion module.
Recommended
USB HID Peripheral (Keyboard / Custom Sensor)
The PIC24FJ64GB412T-I/BG is well suited to USB Human Interface Device peripherals because the integrated full-speed USB 2.0 controller with dedicated DMA offloads packet handling from the CPU. Its 101 GPIO can scan matrices of up to 12x8 keys with room for status LEDs and backlight PWM. The XLP architecture keeps idle power low so an externally powered USB device consumes negligible bus current when not active. Compared to a discrete USB-serial bridge plus 8-bit MCU, the GB4 eliminates a chip and reduces BOM cost by ~$0.80.
Recommended
Electronic Shelf Label (ESL) with Secure Updates
The PIC24FJ64GB412T-I/BG drives segmented LCD ESL displays up to 484 segments with its integrated charge pump and bias generation, eliminating external LCD voltage rails. The hardware crypto engine signs and verifies firmware updates with AES-128/SHA-256 in microseconds, essential for anti-tampering in retail deployments. XLP Sleep current in the nA range means a CR2032 can power a label for 5+ years. Compared to ESL chips without crypto, the GB4 protects against price-tag spoofing attacks.
Recommended
Medical Wearable with On-Glass Segmented LCD
Medical wearables (glucose meters, pulse oximeters, pill dispensers) benefit from the PIC24FJ64GB412T-I/BG combination of integrated segmented LCD (up to 484 segments), hardware AES for HIPAA-compliant data logging, and XLP Sleep in the nA range. Its 12-bit ADC at 500 ksps is precise enough for photoplethysmography (PPG) front-ends. Compared to an 8-bit MCU plus external crypto co-processor, the GB4 reduces PCB area and BOM cost while keeping active power in the single-digit mA range.
Recommended
Industrial HMI with Segmented LCD and Secure Firmware
The PIC24FJ64GB412T-I/BG powers industrial HMIs that need a segmented LCD user interface (up to 484 segments) plus cryptographically signed firmware to prevent field-tampering. The 32 MHz CPU runs menus, sensor processing, and Modbus RTU over UART without an RTOS, while 64 KB Flash comfortably holds application code plus a bootloader. Compared to a 32-bit ARM Cortex-M0+ at the same price, the GB4 adds the segmented LCD and crypto engine on-die, removing two external chips.
Recommended
Smart Meter with Hardware Crypto Authentication
The PIC24FJ64GB412T-I/BG serves as the secure MCU in electricity, gas, and water meters because it combines hardware AES/SHA engines for anti-tamper authentication, segmented LCD for kWh display, and XLP Sleep with RTCC running for 10+ year battery backup. Its 101 GPIO can interface with multiple metrology ADCs and communication modules (LoRa, NB-IoT, M-Bus). Compared to legacy metering MCUs without hardware crypto, the GB4 meets modern smart-grid security requirements without external secure elements.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GB412T-I/BG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ128GB412T-I/BG | PIC24FJ256GB412T-I/BG | PIC24FJ64GA412-I/BG |
|---|---|---|---|---|
| Package | 121-ball TFBGA (10x10) | 121-ball TFBGA (10x10) - same | 121-ball TFBGA (10x10) - same | 121-ball TFBGA (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 128 KB (+100%) | 256 KB (+300%) | 64 KB (same) |
| RAM | 8 KB | 16 KB (+100%) | 16 KB (+100%) | 8 KB (same) |
| Hardware Crypto | Yes (AES, DES, SHA) | Yes (same) | Yes (same) | No (absent) |
| USB | Full-Speed OTG | Full-Speed OTG (same) | Full-Speed OTG (same) | No USB (absent) |
| LCD Segments | Up to 484 | Up to 484 (same) | Up to 484 (same) | Up to 484 (same) |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS (same) | 32 MHz / 16 MIPS (same) | 32 MHz / 16 MIPS (same) |
| Digital I/O | 101 | 101 (same) | 101 (same) | 101 (same) |
| Operating Voltage | 2.0V - 3.6V | 2.0V - 3.6V (same) | 2.0V - 3.6V (same) | 2.0V - 3.6V (same) |
Key Differentiators
- Higher Flash and RAM in pin-compatible upgrade (vs PIC24FJ128GB412T-I/BG)
- Quadruples Flash for OTA-heavy applications (vs PIC24FJ256GB412T-I/BG)
- Lowest-cost drop-in if crypto and USB-OTG are not needed (vs PIC24FJ64GA412-I/BG)
Design Notes
The 121-ball TFBGA at 0.8 mm pitch demands a 4-layer PCB minimum with laser-drilled or staggered microvias to fan out the inner balls. Place a continuous ground pour on layer 2 beneath the package to provide a low-impedance return path for USB and segmented LCD signals. Use length-matched differential routing for the USB D+/D- pair to within 150 mil tolerance; route over an unbroken ground plane and avoid splits under the BGA. Decoupling: place 100 nF X7R as close as possible to every VDD/VSS pair, with one 4.7 uF X5R bulk capacitor within 5 mm of the package.
Configure the integrated voltage regulator (VDDCORE) before switching to high clock speeds. The on-die 1.2V regulator requires a 1 uF X7R capacitor on the VCAP pin. For USB applications, ensure VBUS detection logic is configured to prevent back-powering through the USB PHY when the main VDD rail is off; the USB internal regulator can otherwise source current into the rest of the chip. Use Sleep mode with RTCC for battery-backed RTC applications to achieve nanoampere-level quiescent current.
Do not exceed 3.6V on any I/O when the device is unpowered - the ESD diodes will forward-conduct and latch up. For segmented LCD designs, verify the charge pump output voltage under all temperature conditions; segmented LCD contrast drift is a common field failure if the bias is not temperature-compensated. When migrating from PIC24FJ64GA412 to PIC24FJ64GB412T-I/BG, ensure your firmware initializes the USB module and crypto engine clock, otherwise USB enumeration will fail silently.
The USB Full-Speed D+/D- pair requires 90-ohm differential impedance with traces no longer than 50 mm on the main board; use a USB connector with integrated shielding and chassis ground stitching vias every 100 mil along the edge. The segmented LCD outputs (COM and SEG) can drive up to 484 segments, but capacitive loading on long PCB traces causes ghosting; keep LCD trace lengths below 100 mm and balance the layout to equalize capacitive load on each COM line.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified; not intended for automotive safety-critical applications.
