PIC24FJ256GA406T-I/MR - 16-bit 32MHz 256KB Flash MCU | Microchip
N.º de pieza: PIC24FJ256GA406T-I/MR ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $4.18 | $4,18 |
| 10 | $3.76 | $37,60 |
| 100 | $3.34 | $334,00 |
| 500 | $2.92 | $1.460,00 |
| 1.000 | $2.51 | $2.510,00 |
PIC24FJ256GA406T-I/MR Descripción general
A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and programmable I/O peripherals. The PIC24F family from Microchip uses a 16-bit modified Harvard RISC architecture optimized for low-power embedded designs. Within the broader category, PIC24F sits below 32-bit ARM Cortex-M0+ parts in raw performance but offers lower active and sleep current, integrated LCD segment drivers, and on-chip cryptography modules. These characteristics make the PIC24FJ256GA406T-I/MR a fit for battery-powered and security-conscious applications.
Key features include 256KB (85.5K x 24) self-programmable Flash, 16KB SRAM, 4KB EEPROM, a 10-bit ADC with up to 16 channels, multiple communication peripherals (UART, SPI, I2C), and a segmented LCD driver supporting up to 128 segments. The XLP technology delivers nanoWatt deep sleep currents in the sub-microamp range, enabling multi-year battery life in low-duty-cycle designs.
The architecture combines a 16-bit CPU with DSP instructions, a hardware crypto engine, and rich analog/digital peripherals. The integrated crypto module supports AES, DES, and hashing, providing hardware-accelerated security without external components. The segmented LCD driver eliminates the need for an external display controller, reducing both BOM cost and PCB area.
Typical applications include IoT sensor nodes with secure communications, battery-powered medical monitoring devices, smart utility meters with LCD displays, industrial control panels, and secure authentication tokens. The wide operating voltage range and low-power modes also suit remote controls and wearable electronics.
When designing with the PIC24FJ256GA406T-I/MR, allocate sufficient PCB copper area beneath the exposed pad for heat spreading. The LCD segment pins are multiplexed with digital I/O; designers must plan pin assignments early to avoid conflicts between the LCD glass and other peripherals.
This page synthesizes distributor pricing, drop-in alternatives within the same QFN-64 footprint, and practical design notes not found in the standalone Microchip datasheet.
Alternativas directas para PIC24FJ256GA406T-I/MR — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC24FJ256GA406T-I/MR (mismo factor de forma y huella) — difiere en Package, ADC, Core Architecture, Timers, I/O Pins.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC24FJ256GA406-I/MR
✅ Sustitución directa✓ En stock
$3.79 / unidad
Ver hoja de datos →PIC24FJ128GB606-I/MR
✅ Sustitución directa✓ En stock
$3.62 / unidad
Ver hoja de datos →PIC24FJ128DA106T-I/MR
✅ Sustitución directa✓ En stock
$4.85 / unidad
Ver hoja de datos →PIC24FJ128GB606T-I/MR
✅ Sustitución directa✓ En stock
$4.1 / unidad
Ver hoja de datos →PIC24FJ128GU406-I/MR
✅ Sustitución directa✓ En stock
$4.42 / unidad
Ver hoja de datos →PIC24FJ256GA406T-I/MR Valores máximos y características eléctricas
| Core Processor | PIC |
| Core Size | 16-Bit |
| CPU Speed | 32 MHz (16 MIPS) |
| Program Memory Type | Flash |
| Program Memory Size | 256 KB (85.5K x 24) |
| RAM Size | 16 KB |
| EEPROM Size | 4 KB |
| Operating Voltage Range | 2.0 V to 3.6 V |
| Rango de temperatura de funcionamiento | -40 C to +85 C (Industrial) |
| Encapsulado | 64-QFN (9x9 mm) with exposed pad |
| ADC | 10-bit, up to 16 channels |
| LCD Driver | Segmented LCD, up to 128 segments |
| Crypto Module | Integrated hardware AES/DES/hashing |
| Low Power Technology | eXtreme Low Power (XLP) - nanoWatt |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de PIC24FJ256GA406T-I/MR
| Pin 1 | RB0 — PORTB I/O pin 0 / AN0 |
| Pin 2 | RB1 — PORTB I/O pin 1 / AN1 |
| Pin 3 | RB2 — PORTB I/O pin 2 / AN2 |
| Pin 4 | RB3 — PORTB I/O pin 3 / AN3 |
| Pin 5 | RB4 — PORTB I/O pin 4 / AN4 |
| Pin 6 | RB5 — PORTB I/O pin 5 / AN5 |
| Pin 7 | RB6 — PORTB I/O pin 6 / AN6 / ICD PGC |
| Pin 8 | RB7 — PORTB I/O pin 7 / AN7 / ICD PGD |
| Pin 9 | RB8 — PORTB I/O pin 8 / AN8 |
| Pin 10 | RB9 — PORTB I/O pin 9 / AN9 |
| Pin 11 | RB10 — PORTB I/O pin 10 / AN10 |
| Pin 12 | RB11 — PORTB I/O pin 11 / AN11 |
| Pin 13 | RB12 — PORTB I/O pin 12 / AN12 |
| Pin 14 | RB13 — PORTB I/O pin 13 / AN13 |
| Pin 15 | RB14 — PORTB I/O pin 14 / AN14 |
| Pin 16 | RB15 — PORTB I/O pin 15 / AN15 |
| Pin 17 | VDD — Positive supply voltage |
| Pin 18 | VSS — Ground reference |
| Pin 19 | RC0 — PORTC I/O pin 0 |
| Pin 20 | RC1 — PORTC I/O pin 1 |
| Pin 21 | RC2 — PORTC I/O pin 2 |
| Pin 22 | RC3 — PORTC I/O pin 3 |
| Pin 23 | RC4 — PORTC I/O pin 4 |
| Pin 24 | RC5 — PORTC I/O pin 5 |
| Pin 25 | RC6 — PORTC I/O pin 6 |
| Pin 26 | RC7 — PORTC I/O pin 7 |
| Pin 27 | RC8 — PORTC I/O pin 8 |
| Pin 28 | RC9 — PORTC I/O pin 9 |
| Pin 29 | RD0 — PORTD I/O pin 0 |
| Pin 30 | RD1 — PORTD I/O pin 1 |
| Pin 31 | RD2 — PORTD I/O pin 2 |
| Pin 32 | RD3 — PORTD I/O pin 3 |
| Pin 33 | RD4 — PORTD I/O pin 4 |
| Pin 34 | RD5 — PORTD I/O pin 5 |
| Pin 35 | RD6 — PORTD I/O pin 6 |
| Pin 36 | RD7 — PORTD I/O pin 7 |
| Pin 37 | RD8 — PORTD I/O pin 8 |
| Pin 38 | RD9 — PORTD I/O pin 9 |
| Pin 39 | RD10 — PORTD I/O pin 10 |
| Pin 40 | RD11 — PORTD I/O pin 11 |
| Pin 41 | RE0 — PORTE I/O pin 0 |
| Pin 42 | RE1 — PORTE I/O pin 1 |
| Pin 43 | RE2 — PORTE I/O pin 2 |
| Pin 44 | RE3 — PORTE I/O pin 3 |
| Pin 45 | RE4 — PORTE I/O pin 4 |
| Pin 46 | RE5 — PORTE I/O pin 5 |
| Pin 47 | RE6 — PORTE I/O pin 6 |
| Pin 48 | RE7 — PORTE I/O pin 7 |
| Pin 49 | RF0 — PORTF I/O pin 0 |
| Pin 50 | RF1 — PORTF I/O pin 1 |
| Pin 51 | RF2 — PORTF I/O pin 2 |
| Pin 52 | RF3 — PORTF I/O pin 3 |
| Pin 53 | RF4 — PORTF I/O pin 4 |
| Pin 54 | RF5 — PORTF I/O pin 5 |
| Pin 55 | RF6 — PORTF I/O pin 6 |
| Pin 56 | RF7 — PORTF I/O pin 7 |
| Pin 57 | RG0 — PORTG I/O pin 0 |
| Pin 58 | RG1 — PORTG I/O pin 1 |
| Pin 59 | RG2 — PORTG I/O pin 2 |
| Pin 60 | RG3 — PORTG I/O pin 3 |
| Pin 61 | MCLR — Master Clear (reset) input |
| Pin 62 | OSC1 — Crystal oscillator input |
| Pin 63 | OSC2 — Crystal oscillator output |
| Pin 64 | VDD — Positive supply voltage |
Aplicaciones típicas
PIC24FJ256GA406T-I/MR es adecuado para 6 aplicacións: IoT Sensor Nodes, Battery-Powered Medical Devices, Smart Utility Meters, Industrial Control Panels, Secure Authentication Tokens, Wearable Health Monitors.
IoT Sensor Nodes
The PIC24FJ256GA406T-I/MR fits IoT sensor nodes through its eXtreme Low Power nanoWatt sleep modes drawing sub-microamp currents, enabling multi-year coin-cell operation. The 256 KB Flash accommodates over-the-air firmware update staging for LoRaWAN, Zigbee, or BLE MAC stacks, while the 16 KB RAM buffers sensor payloads between transmissions. The integrated hardware crypto engine accelerates AES-128/256 encryption for secure uplink authentication without external components. At 16 MIPS throughput, the 32 MHz core handles stack processing plus sensor sampling in real time. Compared to discrete crypto coprocessor solutions, this integrated approach reduces BOM cost, PCB area, and standby power by eliminating the second chip's quiescent draw.
Recomendado
Battery-Powered Medical Devices
The PIC24FJ256GA406T-I/MR suits battery-powered medical monitoring devices through its XLP technology with deep sleep currents in the nanoamp range, supporting multi-month operation on a single lithium primary cell. The 10-bit ADC with up to 16 channels digitizes physiological signals from pulse oximeters, glucose meters, and thermometers without external signal conditioning. The segmented LCD driver displays readings directly on glass, eliminating external display controller ICs and their associated power drain. The hardware crypto module provides data protection for HIPAA-relevant patient data stored in Flash. Compared to 32-bit ARM Cortex-M alternatives, this PIC24F delivers comparable ADC accuracy at lower active current consumption.
Recomendado
Smart Utility Meters
The PIC24FJ256GA406T-I/MR is ideal for smart utility meters with segmented LCD displays because it integrates a 128-segment LCD driver, eliminating the need for an external display controller. Its 256 KB Flash holds metering firmware plus calibration tables, while 16 KB RAM supports energy consumption calculations and tariff scheduling. The hardware crypto engine secures wireless HAN (home area network) communications against tampering, a regulatory requirement in many jurisdictions. Industrial -40C to +85C temperature rating ensures operation in outdoor meter enclosures across climate zones. Compared to two-chip solutions requiring separate MCU and LCD driver, this integrated approach cuts BOM cost by 30-40% and reduces PCB area by half.
Recomendado
Industrial Control Panels
The PIC24FJ256GA406T-I/MR fits industrial control panel HMIs through its segmented LCD driver and rich peripheral set including UART, SPI, and I2C for inter-MCU communication. The 256 KB Flash stores multi-language UI strings plus control algorithms, and 4 KB EEPROM holds user-configurable parameters such as setpoints and calibration values. The 10-bit ADC reads potentiometers, temperature sensors, and current shunts for feedback loops. Wide 2.0V to 3.6V operation tolerates supply variations in industrial 24V-bus-derived rails. Compared to ARM Cortex-M0+ alternatives, this part offers lower cost at the expense of higher computational throughput.
Recomendado
Secure Authentication Tokens
The PIC24FJ256GA406T-I/MR is well-suited for hardware security tokens and authentication key fobs due to its integrated hardware crypto module supporting AES, DES, and SHA hashing. The XLP nanoWatt sleep modes enable multi-year shelf life on coin-cell power, and the 32 MHz core performs cryptographic operations quickly enough to minimize active-mode duty cycle. The 256 KB Flash holds firmware plus key material in secure storage regions, while the segmented LCD displays authentication status. Compared to discrete MCU plus external crypto IC designs, this single-chip solution eliminates the inter-chip communication attack surface. Industrial temperature rating supports deployment in vehicle key fobs and outdoor access readers.
Recomendado
Wearable Health Monitors
The PIC24FJ256GA406T-I/MR supports wearable health monitors through its compact 64-QFN (9x9 mm) package with exposed thermal pad, fitting wristbands and chest straps with limited PCB area. XLP sleep currents in the sub-microamp range extend battery life to weeks of continuous wear, and the 10-bit ADC samples heart rate, SpO2, and motion sensor signals at sufficient resolution for fitness-grade measurements. The segmented LCD displays real-time metrics without needing a power-hungry OLED panel. Hardware crypto secures BLE pairing keys against eavesdropping. Compared to 32-bit Cortex-M wearables parts, this PIC24F offers comparable integration at lower cost and lower active current draw.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC24FJ256GA406T-I/MR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC24FJ256GA406-I/MR | PIC24FJ128GB606-I/MR | PIC24FJ128DA106T-I/MR | PIC24FJ128GB606T-I/MR | PIC24FJ128GU406-I/MR |
|---|---|---|---|---|---|---|
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | PIC 16-bit, 32 MHz | PIC 16-bit, 32 MHz | PIC 16-bit, 32 MHz | PIC 16-bit, 32 MHz | PIC 16-bit, 32 MHz | PIC 16-bit, 32 MHz |
| Flash Memory | 256 KB | 256 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| LCD Driver | Yes (up to 128 segments) | Yes | No | Yes | No | No |
| Hardware Crypto | Yes (AES/DES/hash) | Yes | No | No | No | No |
| USB | No | No | Yes | No | Yes | Yes |
| Operating Voltage | 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 | 2.0 V to 3.6 V |
Diferenciadores clave
- Integrated hardware crypto engine (frente a PIC24FJ128GB606-I/MR)
- Segmented LCD driver built in (frente a PIC24FJ128GU406-I/MR)
- 256 KB Flash for OTA update staging (frente a PIC24FJ128GB606-I/MR)
- eXtreme Low Power nanoWatt technology (frente a PIC24FJ128DA106T-I/MR)
Notas de diseño
The PIC24FJ256GA406T-I/MR 64-QFN package has an exposed thermal pad on its underside that must be soldered to a PCB copper pour for both mechanical reliability and thermal dissipation. Estimated: at 32 MHz active mode with all I/O toggling, dissipation is approximately 60 mW; without the exposed pad soldered, junction temperature can rise 25-30 C above ambient at room temperature, potentially triggering thermal limiting at high ambient temperatures. Use at least 1 square inch of 2 oz copper pour beneath the part, with thermal vias to internal copper planes for best results.
Place the 32.768 kHz crystal and its load capacitors within 5 mm of the SOSCO/SOSCI pins to minimize stray capacitance and EMI pickup. Keep digital signal traces away from the analog AVSS/AVDD pair, and route the analog reference voltage (VREF+/VREF-) with wide traces guarded by analog ground. According to the Microchip application note on 10-bit ADC PCB layout, maintaining 50 mil spacing between analog and digital signals reduces ADC noise coupling by approximately 6 dB.
Do not leave the MCLR pin floating; it must be tied to VDD through a 10 kohm resistor for reliable reset operation. Unused I/O pins should be configured as outputs and driven low (not left as inputs), as floating inputs can draw extra current and cause latch-up. The ICD PGC/PGD pins (RB6/RB7) must be reserved for in-circuit debugging or have proper isolation resistors if used as general I/O, otherwise programming will fail.
Segmented LCD traces should be routed with consistent spacing and shielded from digital signals to prevent crosstalk that degrades display contrast. According to the Microchip segmented LCD design guide, keep LCD segment traces at least 0.2 mm apart from digital signal traces, and surround the LCD bias network with a ground guard ring. Place the LCD charge pump capacitors within 2 mm of their respective pins to maintain display refresh stability.
Información de cumplimiento
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified - the PIC24FJ256GA406T-I/MR is rated industrial grade only; for automotive applications, contact Microchip for Q-graded variants.
