PIC24FJ64GB406T-I/MR - 16-bit XLP MCU 64KB Flash USB LCD 64-QFN | Microchip
MPN: PIC24FJ64GB406T-I/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.82 | $6.82 |
| 10 | $6.13 | $61.30 |
| 100 | $5.32 | $532.00 |
| 500 | $4.68 | $2,340.00 |
| 1,000 | $4.15 | $4,150.00 |
| 3,300 | $3.78 | $12,474.00 |
PIC24FJ64GB406T-I/MR Overview
What is a 16-bit PIC microcontroller? A PIC microcontroller (MCU) is a self-contained computing device integrating a CPU core, Flash program memory, RAM, peripherals, and I/O onto one silicon die. The 16-bit PIC24F family sits between 8-bit PIC16/18 devices and 32-bit PIC32 parts in the Microchip taxonomy, delivering more compute headroom than 8-bit cores while retaining the PIC ecosystem's deterministic peripheral set. The PIC24FJ64GB406 family specifically targets secure, low-power, USB-connected embedded designs.
Key features include 64 KB (22K x 24) Flash program memory, 8 KB RAM, hardware AES/DES/SHA crypto acceleration, full-speed USB 2.0 device/host/OTG, segmented LCD driver (up to 128 segments), 12-bit ADC, multiple UART/SPI/I2C peripherals, and XLP nanoWatt sleep modes that draw sub-microamp currents for battery-powered operation.
Architecturally, the device uses a 16-bit Modified Harvard core with separate program and data buses, 24-bit instruction words for compact code density, and a wide peripheral bus supporting DMA to RAM. The hardware crypto engine offloads AES, DES, 3DES and SHA hashes from the CPU, enabling secure data-at-rest applications without software overhead.
Typical applications include low-power embedded security (secure token/authenticator), USB-connected smart sensors, portable medical devices, e-metering/data loggers with segmented LCD, secure wearables, and consumer devices requiring hardware crypto. Battery-powered designs benefit from XLP modes; wired designs benefit from integrated USB.
When designing with this part, plan PCB layout for the exposed thermal pad of the 64-QFN package to manage thermal dissipation. Verify the LCD segment count and pin map against your glass, and ensure your USB DP/DM traces are 90-ohm differential with proper impedance.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes that complement the manufacturer datasheet for engineers evaluating PIC24FJ64GB406 variants.
Drop-in alternatives for PIC24FJ64GB406T-I/MR — 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 PIC24FJ64GB406T-I/MR (same form factor and footprint) — differing in Package, ADC, USB, Core, Program Flash.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ128GB406-I/MR
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →PIC24FJ256GB406T-I/MR
✅ Drop-In✓ In Stock
$5.4 / Unit
View Datasheet →PIC24FJ128GB606-I/MR
✅ Drop-In✓ In Stock
$3.62 / Unit
View Datasheet →PIC24FJ128GB606T-I/MR
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →PIC24FJ256GB606T-I/MR
✅ Drop-In✓ In Stock
$2.92 / Unit
View Datasheet →PIC24FJ128GU406-I/MR
✅ Drop-In✓ In Stock
$4.42 / Unit
View Datasheet →PIC24FJ64GB406T-I/MR Maximum Ratings & Electrical Characteristics
| Core | PIC24F (16-bit Modified Harvard) |
| CPU Speed | 32 MHz / 16 MIPS |
| Program Memory (Flash) | 64 KB (22K x 24 instruction words) |
| RAM | 8 KB |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| Crypto Hardware | Integrated AES/DES/SHA accelerator |
| Package | 64-QFN (MR) 9x9 mm with exposed thermal pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial, '-I' suffix) |
| RoHS Status | Compliant |
| XLP Sleep Current | Sub-microamp nanoWatt modes (per family datasheet) |
PIC24FJ64GB406T-I/MR 64-qfn (mr) 9x9 mm with exposed thermal pad Pin Configuration Guide
Pin configuration for PIC24FJ64GB406T-I/MR (64-qfn (mr) 9x9 mm with exposed thermal pad 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 PIC24FJ64GB406T-I/MR.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC24FJ64GB406T-I/MR is suitable for 6 applications: Low-Power Secure Token / Authenticator, USB-Connected Smart Sensors, Portable Medical Devices, Smart E-Metering / Data Loggers, Secure Wearables / Fitness Devices, USB HID / Consumer Peripherals.
Low-Power Secure Token / Authenticator
The PIC24FJ64GB406T-I/MR's hardware AES/SHA engine and XLP nanoWatt sleep modes make it ideal for battery-powered secure authenticators. The integrated crypto module offloads AES-128/256 and SHA-256 hashes from the 16 MIPS CPU, while XLP sleep current below 1 uA extends coin-cell life to multiple years. Designers can use the 8 KB RAM for USB CDC stacks or NFC transponder buffers, and the 64 KB Flash fits complete TLS-lite client firmware. Versus software crypto on competing Cortex-M0+ MCUs, the hardware engine runs SHA-256 in microseconds, enabling real-time authentication without CPU stalls.
Recommended
USB-Connected Smart Sensors
The PIC24FJ64GB406T-I/MR integrates USB 2.0 full-speed Device/Host/OTG, eliminating the need for an external PHY or companion interface chip. The on-chip 12-bit ADC and segmented LCD driver support smart sensor hubs that display readings on glass while streaming data over USB CDC or vendor-class endpoints. With 16 MIPS of compute, designers can run local filtering algorithms before transmitting. The 64-QFN (MR) package keeps the BOM small, and the XLP sleep modes reduce quiescent draw when the USB host suspends the device per USB 2.0 spec.
Recommended
Portable Medical Devices
Medical wearables and portable diagnostic tools benefit from the PIC24FJ64GB406T-I/MR's eXtreme Low Power modes, hardware crypto for HIPAA-compliant data protection, and segmented LCD for direct on-glass readouts. The 16-bit PIC24F core provides enough MIPS for basic DSP filtering of biosignals, while the integrated crypto accelerator secures patient-identifiable data at rest. The 64-QFN (MR) package with exposed thermal pad handles continuous operation in body-worn enclosures without thermal throttling.
Recommended
Smart E-Metering / Data Loggers
The PIC24FJ64GB406T-I/MR's segmented LCD driver supports multi-digit glass displays common in residential and industrial meters, while the hardware crypto module protects tamper-detection logs and billing data. With 64 KB Flash and 8 KB RAM, designers can store rolling consumption buffers and secure signed event logs. The XLP sleep currents below 1 uA enable multi-year battery operation in pulse-metering or remote telemetry units. Compared to discrete LCD driver + MCU solutions, the integrated design cuts BOM cost and PCB area by approximately 30 percent.
Recommended
Secure Wearables / Fitness Devices
Wearable fitness bands and medical wearables benefit from the PIC24FJ64GB406T-I/MR's combination of sub-microamp sleep currents, hardware AES for health-data protection, USB for charging/data sync, and segmented LCD for visible readouts on small glass. The 64-QFN (MR) 9x9 mm package fits slim wristbands, while the 16 MIPS CPU supports heart-rate and step-count algorithms in real time. Battery life extends to multiple weeks thanks to the XLP nanoWatt Technology and selective peripheral gating.
Recommended
USB HID / Consumer Peripherals
USB Human Interface Devices such as custom keyboards, pointer devices, and consumer peripherals leverage the PIC24FJ64GB406T-I/MR's integrated USB 2.0 full-speed controller, eliminating external PHY chips. The 64 KB Flash fits USB HID stacks plus custom vendor protocols, while 8 KB RAM handles HID report buffers and CDC ACM endpoints. The hardware crypto module secures vendor-specific authentication with the host, enabling anti-counterfeiting features for OEM peripherals.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GB406T-I/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ128GB406-I/MR | PIC24FJ256GB406T-I/MR | PIC24FJ128GB606-I/MR | PIC24FJ128GU406-I/MR |
|---|---|---|---|---|---|
| Package | 64-QFN (MR) 9x9 mm | 64-QFN (MR) - same | 64-QFN (MR) - same | 64-QFN (MR) - same | 64-QFN (MR) - same |
| Brand | 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 |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| Flash Memory | 64 KB | 128 KB | 256 KB | 128 KB | 128 KB |
| Hardware Crypto | Yes (AES/DES/SHA) | Yes (AES/DES/SHA) | Yes (AES/DES/SHA) | Yes (AES/DES/SHA) | No |
| USB 2.0 FS | Yes (Device/Host/OTG) | Yes (Device/Host/OTG) | Yes (Device/Host/OTG) | Yes (Device/Host/OTG) | Yes (Device/Host/OTG) |
| Segmented LCD Driver | Yes | Yes | Yes | Yes (more segments) | Yes |
Key Differentiators
- Integrated hardware crypto module (vs PIC24FJ64GA006T-I/PT)
- Full-speed USB 2.0 with OTG (vs PIC24FJ64GA004T-I/PT)
- Drop-in upgrade path to 128 KB and 256 KB variants (vs PIC24FJ64GB002T-I/SS)
Design Notes
The 64-QFN (MR, 9x9 mm) package has an exposed thermal pad that MUST be soldered to a continuous ground plane on the PCB. Without proper pad soldering, the junction-to-ambient thermal resistance increases dramatically, potentially causing thermal shutdown under sustained USB + LCD + crypto workloads. Use thermal vias under the exposed pad to sink heat into inner copper layers.
Route USB DP/DM as a 90-ohm differential pair with matched length and continuous reference ground plane. Place the USB series resistors and ESD protection diode within 5 mm of the MCU pins. For segmented LCD, route segment and common lines with adequate spacing to avoid crosstalk, and place charge-pump capacitors close to the LCD pins per the family datasheet reference design.
Use a 10 uF bulk + 0.1 uF ceramic decoupling pair within 2 mm of each VDD pin, plus a 1 uF tantalum or ceramic on the AVDD analog supply if ADC accuracy is critical. XLP nanoWatt sleep modes drop the regulator current below 1 uA, so add a low-Iq LDO or verify your supply rail can sustain operation during long sleep intervals without sagging.
Do not confuse the 'T' suffix (Tape & Reel packaging) with a different operating temperature. The '-I' suffix denotes the industrial -40C to +85C range. Programming voltage requirements: this part supports low-voltage ICSP, so ensure your programmer is configured for the correct Vpp levels. Crypto module key storage must be configured in OTP Flash or locked Flash regions per the family datasheet.
Compliance Information
RoHS compliant per Microchip product page. Industrial-grade (-40C to +85C) only; AEC-Q100 variants exist in the PIC24FJ family but this exact MPN is not automotive-grade.
