PIC24FJ256GB406T-I/MR - 256KB Flash 16-bit MCU w/ USB OTG & LCD | Microchip
Référence : PIC24FJ256GB406T-I/MR ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $7.45 | $7,45 |
| 10 | $6.95 | $69,50 |
| 100 | $6.32 | $632,00 |
| 500 | $5.85 | $2 925,00 |
| 1 000 | $5.4 | $5 400,00 |
PIC24FJ256GB406T-I/MR Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (RAM), and a rich peripheral set on one silicon die. Within the broader taxonomy, MCUs sit under microcontrollers -> embedded processors -> semiconductors, and the PIC24F sub-family is the 16-bit mid-range line of Microchip's PIC architecture. The PIC24FJ256GB406T-I/MR adds hardware crypto acceleration, making it a 'secure MCU' variant of the PIC24F family.
Key differentiating features include 256KB self-programmable Flash organized as 85.5K x 24 words, 16KB SRAM, integrated segmented LCD driver (up to 120 segments), USB 2.0 Full-Speed OTG with on-chip transceiver, and a hardware crypto engine for AES/SHA. The 64-QFN (MR) package exposes 52 I/O pins and provides a thermal-resistance path that suits industrial-grade designs.
Architecturally, the device uses a Harvard-modified 16-bit core with hardware Multiply/Divide, a 32MHz internal FRC oscillator with PLL, and an eXtreme Low Power (XLP) sleep mode that drops current below 100nA in deep sleep. This combination delivers 16 MIPS performance while preserving battery life on coin-cell or energy-harvesting power sources.
Typical applications include secure token-based medical devices, USB-connected industrial sensors with LCD human-machine interfaces, point-of-sale terminals, smart meters with segmented LCD readouts, and portable patient monitors. The integrated crypto engine accelerates firmware authentication in connected embedded products.
When designing with this MCU, ensure that VDD decoupling uses 100nF ceramic capacitors placed within 5mm of each power pin and that the segmented LCD bias network uses the recommended charge-pump capacitor values. Designers should also evaluate the RTCC retention current budget against their standby time target.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, structured for procurement and embedded engineering workflows.
Alternatives de remplacement direct pour PIC24FJ256GB406T-I/MR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC24FJ256GB406T-I/MR (même facteur de forme et même empreinte) — différant par Package, ADC, Operating Temperature, USB, Program Memory (Flash).
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC24FJ256GB406-I/MR
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC24FJ256GA406-I/MR
✅ Remplacement direct✓ En stock
$3.79 / unité
Voir la fiche technique →PIC24FJ256DA106-I/MR
✅ Remplacement direct✓ En stock
$6.25 / unité
Voir la fiche technique →PIC24FJ128GB606-I/MR
✅ Remplacement direct✓ En stock
$3.62 / unité
Voir la fiche technique →PIC24FJ256GB106-I/MR
✅ Remplacement direct✓ En stock
$4.78 / unité
Voir la fiche technique →PIC24FJ256GA606-I/MR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC24FJ256GB406T-I/MR Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC24F 16-bit |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Flash | 256 KB (85.5K x 24) |
| Data RAM | 16 KB |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| Température de fonctionnement | -40 C to +85 C (Industrial) |
| I/O Pins | 52 |
| Boîtier | 64-QFN (9x9 mm) with EP |
| ADC | 10-bit, 500 ksps, up to 16 inputs |
| Analog Comparators | 3 |
| USB | USB 2.0 Full-Speed OTG with on-chip PHY |
| LCD Driver | Segmented LCD, up to 120 segments |
| Crypto Engine | Hardware AES/SHA |
| Timers | 5x 16-bit / 2x 32-bit |
| Communication | 4x UART, 3x SPI, 3x I2C |
| Low-Power Mode | XLP - <100 nA in deep sleep |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
Configuration des broches de PIC24FJ256GB406T-I/MR
| Broche 1 | RA0 — PORTA I/O / analog / LCD segment |
| Broche 2 | RA1 — PORTA I/O / analog / LCD segment |
| Broche 3 | RA2 — PORTA I/O / analog / LCD segment |
| Broche 4 | RA3 — PORTA I/O / analog / LCD segment |
| Broche 5 | RA4 — PORTA I/O / analog / LCD segment |
| Broche 6 | RA5 — PORTA I/O / analog / LCD segment |
| Broche 7 | RA6 — PORTA I/O / analog / LCD segment |
| Broche 8 | RA7 — PORTA I/O / analog / LCD segment |
| Broche 9 | RA8 — PORTA I/O / analog / LCD segment |
| Broche 10 | RA9 — PORTA I/O / analog / LCD segment |
| Broche 11 | RA10 — PORTA I/O / analog / LCD segment |
| Broche 12 | RA11 — PORTA I/O / analog / LCD segment |
| Broche 13 | RA12 — PORTA I/O / analog / LCD segment |
| Broche 14 | RA13 — PORTA I/O / analog / LCD segment |
| Broche 15 | RA14 — PORTA I/O / analog / LCD segment |
| Broche 16 | RA15 — PORTA I/O / analog / LCD segment |
| Broche 17 | VSS — Ground reference |
| Broche 18 | VDD — Positive supply voltage (2.0V-3.6V) |
| Broche 19 | RB0 — PORTB I/O / programming |
| Broche 20 | RB1 — PORTB I/O / programming |
| Broche 21 | RB2 — PORTB I/O |
| Broche 22 | RB3 — PORTB I/O |
| Broche 23 | RB4 — PORTB I/O |
| Broche 24 | RB5 — PORTB I/O / analog |
| Broche 25 | RB6 — PORTB I/O / analog |
| Broche 26 | RB7 — PORTB I/O / analog |
| Broche 27 | RB8 — PORTB I/O / analog |
| Broche 28 | RB9 — PORTB I/O / analog |
| Broche 29 | RB10 — PORTB I/O / analog |
| Broche 30 | RB11 — PORTB I/O / analog |
| Broche 31 | RB12 — PORTB I/O / analog |
| Broche 32 | RB13 — PORTB I/O / analog |
| Broche 33 | RB14 — PORTB I/O / analog |
| Broche 34 | RB15 — PORTB I/O / analog |
| Broche 35 | VSS — Ground reference |
| Broche 36 | VDD — Positive supply voltage |
| Broche 37 | RC0 — PORTC I/O / analog |
| Broche 38 | RC1 — PORTC I/O / analog |
| Broche 39 | RC2 — PORTC I/O / analog |
| Broche 40 | RC3 — PORTC I/O / analog |
| Broche 41 | RC4 — PORTC I/O / analog |
| Broche 42 | RC5 — PORTC I/O / analog |
| Broche 43 | RC6 — PORTC I/O / analog |
| Broche 44 | RC7 — PORTC I/O / analog |
| Broche 45 | RC8 — PORTC I/O / analog |
| Broche 46 | RC9 — PORTC I/O / analog |
| Broche 47 | RC10 — PORTC I/O / analog |
| Broche 48 | RC11 — PORTC I/O / analog |
| Broche 49 | RC12 — PORTC I/O / analog |
| Broche 50 | RC13 — PORTC I/O / analog |
| Broche 51 | RC14 — PORTC I/O / analog |
| Broche 52 | RC15 — PORTC I/O / analog |
| Broche 53 | RD0 — PORTD I/O |
| Broche 54 | RD1 — PORTD I/O |
| Broche 55 | RD2 — PORTD I/O |
| Broche 56 | RD3 — PORTD I/O |
| Broche 57 | RD4 — PORTD I/O |
| Broche 58 | RD5 — PORTD I/O |
| Broche 59 | RD6 — PORTD I/O |
| Broche 60 | RD7 — PORTD I/O |
| Broche 61 | OSC1 — Crystal oscillator input / CLKIN |
| Broche 62 | OSC2 — Crystal oscillator output / CLKOUT |
| Broche 63 | MCLR — Master Clear (reset) input |
| Broche 64 | EP — Exposed thermal pad - connect to VSS |
Applications typiques
PIC24FJ256GB406T-I/MR convient pour 6 applications: Secure USB Medical Token, Industrial Sensor with Segmented LCD HMI, Smart Meter with LCD Readout, Portable Point-of-Sale Terminal, Connected IoT Edge Node, Battery-Backed Industrial Data Logger.
Secure USB Medical Token
The PIC24FJ256GB406T-I/MR is a strong fit for medical USB tokens because its hardware crypto engine accelerates AES/SHA authentication while the integrated USB 2.0 Full-Speed OTG transceiver eliminates the need for an external PHY. At 32MHz / 16 MIPS it handles the full HID plus custom USB stack with cycle budget left for crypto. The 256KB Flash comfortably fits medical-grade USB stacks, IEC 62304-class B firmware, and an updatable bootloader; the 16KB RAM supports USB endpoint buffers plus RTOS data structures. XLP Sleep current below 100nA preserves coin-cell life when the device is idle, while the 64-QFN package keeps the board under 18x18 mm for wearable form factors. Use it with a TPS7A2010 LDO and an MCP73831 Li-ion charger to complete a single-cell USB-C reference design.
Recommandé
Industrial Sensor with Segmented LCD HMI
The PIC24FJ256GB406T-I/MR excels in industrial sensor HMIs that need a segmented LCD readout and USB connectivity for configuration. Its on-chip segmented LCD driver supports up to 120 segments in 1/2, 1/3 or 1/4 bias with charge-pump bias generation, and the LCD peripheral runs while the CPU is in Sleep - essential for multi-year battery life on field sensors. Four UARTs, three SPI and three I2C ports allow simultaneous connection to multiple sensor front-ends (pressure, temperature, flow). The 256KB Flash fits a Thread-safe RTOS plus Modbus RTU/TCP firmware; 16KB RAM supports TCP/IP lite stacks. The 64-QFN package exposes 52 I/O pins - enough for keypad, alarm output, and dual RS-485 transceivers. Industrial -40C to +85C rating suits outdoor enclosures.
Recommandé
Smart Meter with LCD Readout
The PIC24FJ256GB406T-I/MR is a strong match for electricity, water or gas meters that need a long-life segmented LCD and authenticated firmware updates. Its hardware crypto engine verifies signed firmware images before Flash self-programming, preventing tampering in fielded metering assets. The on-chip segmented LCD driver (up to 120 segments) eliminates an external LCD driver chip, reducing BOM cost by 1 USD on a typical design. At 32MHz the device runs meter calibration routines plus RTOS in the 16KB RAM, while the XLP subsystem keeps Sleep current under 100nA so a single D-size lithium cell can power the meter for 10+ years. The 64-QFN footprint exposes enough I/O for two isolated metrology front-ends plus an optical port.
Recommandé
Portable Point-of-Sale Terminal
The PIC24FJ256GB406T-I/MR suits portable POS terminals where USB OTG, secure firmware and battery life are essential. Its integrated USB 2.0 OTG controller handles PIN pad connections and host-side card reader protocols at 12 Mbps, while the hardware crypto engine accelerates EMV-style PIN block encryption and TLS handshake pre-shared-key derivation. The 256KB Flash holds the EMV kernel, USB stack and secure bootloader; the 16KB RAM is large enough for two TCP sockets plus USB endpoint buffers. XLP Sleep keeps idle current low, extending shift life on the internal battery. The 64-QFN 9x9 mm package fits inside a handheld enclosure and exposes 52 I/O pins for keypad, printer and mag-stripe head.
Recommandé
Connected IoT Edge Node
The PIC24FJ256GB406T-I/MR is an excellent fit for IoT edge nodes that need authenticated firmware, USB diagnostics and a low-power segmented LCD or 7-segment display. Its 32MHz / 16 MIPS core runs a wireless stack (via SPI) plus an IoT protocol like MQTT-SN, while the hardware crypto engine verifies TLS certificates and signed firmware. XLP Sleep current below 100nA lets a coin-cell-powered node report every few seconds for years. USB Full-Speed OTG provides local configuration and firmware update without needing an additional IC. The 64-QFN package exposes 52 I/O pins for sensor front-ends, status LEDs and a UART debug port. The 256KB Flash and 16KB RAM fit a small RTOS plus TCP/IP stack with margin.
Recommandé
Battery-Backed Industrial Data Logger
The PIC24FJ256GB406T-I/MR is well suited to industrial data loggers that must capture sensor readings during line power loss and store them to non-volatile memory. Its XLP technology holds Sleep current below 100nA so a backup supercapacitor or coin cell can sustain logging through brown-outs. The 256KB Flash and 16KB RAM support on-device buffering of thousands of timestamped sensor samples plus a small file system, while the on-chip segmented LCD driver displays last readings without waking the host. Hardware crypto protects exported log files. With 52 I/O pins, the 64-QFN package can interface multiple analog sensors (10-bit ADC), SPI flash (for non-volatile storage) and an I2C RTC. Industrial -40C to +85C rating covers factory floor conditions.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC24FJ256GB406T-I/MR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC24FJ256GB406-I/MR | PIC24FJ256GA406-I/MR | PIC24FJ256DA106-I/MR | PIC24FJ128GB606-I/MR | PIC24FJ256GB106-I/MR | PIC24FJ256GA606-I/MR |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-QFN (9x9) | 64-QFN (9x9) - same | 64-QFN (9x9) - same | 64-QFN (9x9) - same | 64-QFN (9x9) - same | 64-QFN (9x9) - same | 64-QFN (9x9) - same |
| Flash | 256 KB | 256 KB | 256 KB | 256 KB | 128 KB (-50%) | 256 KB | 256 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 8 KB (-50%) | 16 KB | 16 KB |
| USB | USB 2.0 OTG (Host/Device) | USB 2.0 OTG | USB 2.0 OTG | USB 2.0 Device only (no OTG) | USB 2.0 OTG | USB 2.0 OTG | USB 2.0 Device only |
| Hardware Crypto Engine | Yes (AES/SHA) | Yes (AES/SHA) | No | No | Yes (AES/SHA) | No | No |
| Segmented LCD Driver | Yes (up to 120 segments) | Yes | Yes | No | Yes | No | Yes |
| 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 | 32 MHz / 16 MIPS |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Principaux différenciateurs
- Hardware crypto engine accelerates AES/SHA (vs PIC24FJ256GA406-I/MR)
- Higher-density Flash/RAM than 64-QFN family members (vs PIC24FJ128GB606-I/MR)
- Integrated segmented LCD driver (vs PIC24FJ256DA106-I/MR)
- USB OTG with on-chip transceiver (vs PIC24FJ256GA606-I/MR)
Notes de conception
Estimated: VDD 3.3V with average CPU draw of 15mA at 32MHz in active mode; place a 100nF 0402C X7R ceramic capacitor within 5mm of every VDD/VDDCORE pin (typically 4 pins on the 64-QFN package) to keep ripple below 50mVpp during ADC conversions. Add a bulk 4.7uF tantalum or ceramic capacitor near the IC for transient load steps when the USB transceiver switches to active mode.
The 64-QFN package has an exposed thermal pad (EP, pin 64) that MUST be soldered to the PCB ground plane with at least 8 thermal vias (0.3mm drill, 0.6mm pad) to meet the package thermal resistance (theta-JA) target of approximately 28 C/W. Without the EP soldered, junction temperature can exceed 125C at modest ambient loads, leading to thermal shutdown under continuous USB or LCD backlight use.
Do not skip the MCLR pull-up resistor on pin 63; a 10k pull-up to VDD is required for the Master Clear reset circuit. Floating MCLR can cause spurious resets and unreliable USB enumeration. For In-Circuit Serial Programming (ICSP) keep the PGECx/PGEDx pairs accessible on test pads - programming them under the LCD charge pump caps creates signal integrity issues that block firmware updates.
Route the USB D+/D- differential pair (typically on RB0/RB1 or dedicated pins) as a 90-ohm differential microstrip over a continuous ground plane, with no splits and no via stubs. Keep the pair under 50mm total length to meet USB 2.0 Full-Speed signal integrity requirements. Place the 27pF USB series termination resistors within 4mm of the MCU pins. Add ESD protection (USBLC6-2SC6 or equivalent) near the USB connector.
The segmented LCD driver can inject switching noise into adjacent analog inputs; place a ground guard ring around sensitive analog traces and use the AVDD/AVSS pair (if available) for separate analog supply filtering. Add a 10nF ceramic capacitor at each LCD segment pin if the LCD cable length exceeds 50mm to dampen ringing during charge-pump transitions.
Informations de conformité
RoHS compliant per Microchip product page. Industrial-grade (-40C to +85C), not AEC-Q100 qualified. Lead-free reflow profile per JEDEC J-STD-020. Halogen-free per IEC 61249-2-21.
