PIC24FJ256GA406-I/PT - 256KB Flash 16-bit XLP MCU | Microchip
N.º de pieza: PIC24FJ256GA406-I/PT ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $8.62 | $8,62 |
| 10 | $7.75 | $77,50 |
| 100 | $6.93 | $693,00 |
| 500 | $6.2 | $3.100,00 |
| 1.000 | $5.55 | $5.550,00 |
PIC24FJ256GA406-I/PT Descripción general
What is a 16-bit MCU with XLP? A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and peripherals. The "16-bit" designation indicates the data path width, giving it 2x the data throughput of an 8-bit MCU while remaining simpler and lower-power than 32-bit Cortex-M parts. PIC24F microcontrollers sit in the hierarchy: 16-bit MCU -> PIC24 family -> XLP 24F series -> PIC24FJ256GA406 sub-family. The "XLP" (eXtreme Low Power) branding refers to Microchip's nanoWatt XLP technology that enables deep sleep currents below 1 µA, making these parts ideal for battery-powered and energy-harvesting designs.
Key features include the integrated crypto engine with AES-128 and code-guard security, 256 KB self-programmable Flash with ECC, segmented LCD driver supporting up to 100 segments, and on-chip USB 2.0 full-speed OTG. The Peripheral Pin Select (PPS) remapping system allows flexible I/O assignments, while the 24-channel 10-bit ADC and dual analog comparators serve sensor-rich applications. XLP technology provides 9 deep-power-down modes with currents as low as 20 nA in deep sleep, which is critical for wearables and metering.
Architecturally, the device uses a Harvard RISC core with modified instruction sets and a 16-element by 16-bit working register array, achieving 16 MIPS at 32 MHz. The 256 KB Flash is dual-partitioned to support live firmware updates, and 16 KB SRAM supports data-intensive segments. Integrated DMA enables peripheral-to-memory transfers without CPU intervention, freeing cycles for application logic. The crypto engine offloads AES encryption tasks, while the segmented LCD controller with integrated charge pump drives resistive LCD glass from a 2.0-3.6 V supply.
Typical applications include industrial metering (electricity, gas, water), portable medical devices, secure IoT edge nodes with over-the-air firmware updates, building automation panels with LCD keypads, and USB-based data loggers. The wide 2.0 V to 3.6 V operating range and 1.8 V minimum Flash programming voltage support single-cell Li-ion and two-AA battery topologies.
When designing with this part, allocate PCB area for an external 12 MHz or 16 MHz crystal and the segmented LCD bias capacitors; the integrated charge pump simplifies low-temperature LCD contrast but requires proper bulk decoupling. The PPS system should be configured early in firmware since remapping after peripheral initialization can cause transient glitches. For low-power modes, verify the brown-out reset threshold matches the battery discharge curve to avoid spurious resets in deep sleep.
This page synthesizes distributor pricing, drop-in alternatives within the same 64-pin TQFP footprint, and practical design notes not found in the manufacturer datasheet alone.
Alternativas directas para PIC24FJ256GA406-I/PT — 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 PIC24FJ256GA406-I/PT (mismo factor de forma y huella) — difiere en Package, Core Architecture, Operating Temperature, ADC, Program Memory (Flash).
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC24FJ256GA406T-I/PT
✅ Sustitución directa✓ En stock
$3.65 / unidad
Ver hoja de datos →PIC24FJ256GA406-I/MR
✅ Sustitución directa✓ En stock
$3.79 / unidad
Ver hoja de datos →PIC24FJ256GA106-I/PT
✅ Sustitución directa✓ En stock
$4.3 / unidad
Ver hoja de datos →PIC24FJ128GA006-I/PT
✅ Sustitución directa✓ En stock
$4.95 / unidad
Ver hoja de datos →DSPIC33EV64GM006-I/PT
✅ Sustitución directa✓ En stock
$4.65 / unidad
Ver hoja de datos →DSPIC33EP256MU810-I/PT
✅ Sustitución directa✓ En stock
$10.2 / unidad
Ver hoja de datos →PIC24FJ256GA406-I/PT Valores máximos y características eléctricas
| Core Architecture | PIC24F 16-bit Harvard RISC |
| Family | PIC® XLP™ 24F |
| Maximum CPU Speed | 32 MHz / 16 MIPS |
| Program Flash Memory | 256 KB (85.5K x 24) |
| RAM | 16 KB |
| Operating Voltage Range | 2.0 V to 3.6 V |
| ADC | 24-channel 10-bit |
| USB | USB 2.0 Full-Speed OTG |
| LCD Segments | Up to 100 segments with charge pump |
| Crypto Engine | AES-128, Code-Guard security |
| CCP Modules | 5 (MCCP/SCCP) |
| Serial Communication | UART, SPI, I²C with PPS remapping |
| DMA Channels | Yes (peripheral-to-memory) |
| Encapsulado | 64-pin TQFP (10x10 mm) |
| Temperatura de funcionamiento | -40 C to +85 C (Industrial) |
| Tipo de montaje | Surface Mount |
| Packing Media | Tray (160 per tray) |
| Estado RoHS | Compliant |
Configuración de pines de PIC24FJ256GA406-I/PT
| Pin 1 | RG15 — I/O port RG15 |
| Pin 2 | RP20/RD4 — Remappable I/O RD4 |
| Pin 3 | RP21/RD5 — Remappable I/O RD5 |
| Pin 4 | RP22/RD6 — Remappable I/O RD6 |
| Pin 5 | RP23/RD7 — Remappable I/O RD7 |
| Pin 6 | RC12 — I/O port RC12 |
| Pin 7 | RC13 — I/O port RC13 |
| Pin 8 | RC14 — I/O port RC14 |
| Pin 9 | RC15 — I/O port RC15 |
| Pin 10 | RB0 — I/O port RB0 |
| Pin 11 | RB1 — I/O port RB1 |
| Pin 12 | RB2 — I/O port RB2 |
| Pin 13 | RB3 — I/O port RB3 |
| Pin 14 | RB4 — I/O port RB4 |
| Pin 15 | RB5 — I/O port RB5 |
| Pin 16 | RB6 — I/O port RB6 / ICSPCLK |
| Pin 17 | RB7 — I/O port RB7 / ICSPDAT |
| Pin 18 | RB8 — I/O port RB8 |
| Pin 19 | RB9 — I/O port RB9 |
| Pin 20 | RB10 — I/O port RB10 |
| Pin 21 | RB11 — I/O port RB11 |
| Pin 22 | D+ — USB D+ data line |
| Pin 23 | D- — USB D- data line |
| Pin 24 | VBUS — USB VBUS sense |
| Pin 25 | VUSB3V3 — USB internal transceiver supply |
| Pin 26 | RA0 — I/O port RA0 |
| Pin 27 | VSS — Ground reference |
| Pin 28 | VDD — Positive supply voltage (2.0-3.6 V) |
| Pin 29 | RA1 — I/O port RA1 |
| Pin 30 | RA2 — I/O port RA2 |
| Pin 31 | VSS — Ground reference |
| Pin 32 | RA3 — I/O port RA3 |
| Pin 33 | RA4 — I/O port RA4 |
| Pin 34 | RA5 — I/O port RA5 |
| Pin 35 | RA6 — I/O port RA6 |
| Pin 36 | RA7 — I/O port RA7 |
| Pin 37 | RC0 — I/O port RC0 |
| Pin 38 | RC1 — I/O port RC1 |
| Pin 39 | RC2 — I/O port RC2 |
| Pin 40 | RC3 — I/O port RC3 |
| Pin 41 | RC4 — I/O port RC4 |
| Pin 42 | RC5 — I/O port RC5 |
| Pin 43 | RC6 — I/O port RC6 |
| Pin 44 | RC7 — I/O port RC7 |
| Pin 45 | RC8 — I/O port RC8 |
| Pin 46 | RC9 — I/O port RC9 |
| Pin 47 | RD0 — I/O port RD0 |
| Pin 48 | RD1 — I/O port RD1 |
| Pin 49 | RD2 — I/O port RD2 |
| Pin 50 | RD3 — I/O port RD3 |
| Pin 51 | RD8 — I/O port RD8 |
| Pin 52 | RD9 — I/O port RD9 |
| Pin 53 | RD10 — I/O port RD10 |
| Pin 54 | RD11 — I/O port RD11 |
| Pin 55 | RD12 — I/O port RD12 |
| Pin 56 | RD13 — I/O port RD13 |
| Pin 57 | RD14 — I/O port RD14 |
| Pin 58 | RD15 — I/O port RD15 |
| Pin 59 | RE0 — I/O port RE0 |
| Pin 60 | VDD — Positive supply voltage (2.0-3.6 V) |
| Pin 61 | VSS — Ground reference |
| Pin 62 | RE1 — I/O port RE1 |
| Pin 63 | RE2 — I/O port RE2 |
| Pin 64 | RE3 — I/O port RE3 |
Aplicaciones típicas
PIC24FJ256GA406-I/PT es adecuado para 7 aplicacións: Industrial Electricity Metering with LCD, Secure IoT Edge Node with OTA Updates, Portable Medical Glucose / Patient Monitor, Building Automation HMI with LCD Keypad, USB Data Logger / Tethered Sensor, Automotive Dashboard Sub-Display, Wearables with Segmented OLED/LCD Display.
Industrial Electricity Metering with LCD
The PIC24FJ256GA406-I/PT is purpose-built for single-phase and polyphase electricity meters, integrating a segmented LCD controller capable of driving up to 100 segments from a 2.0 V to 3.6 V supply. The integrated charge pump maintains LCD contrast down to -40 C, eliminating the need for an external bias generator. With 16 KB RAM and 256 KB Flash, the device can store calibration constants, rolling demand logs, and TOU tariff schedules directly on-chip. AES-128 hardware encryption secures AMI (Advanced Metering Infrastructure) communication against tampering, while XLP nanoWatt technology reduces sleep current to 20 nA typical, allowing battery-backed metering to operate for over 10 years on a single cell.
Recomendado
Secure IoT Edge Node with OTA Updates
The PIC24FJ256GA406-I/PT's dual-partition 256 KB Flash enables fail-safe over-the-air firmware updates without an external SPI flash chip, reducing BOM cost in connected sensor nodes. The hardware AES-128 engine accelerates TLS handshake and secures LoRaWAN/Wi-Fi payloads at the edge without burdening the CPU. Peripheral Pin Select (PPS) allows flexible assignment of UART/SPI/I²C to any I/O pin, simplifying PCB routing for multi-radio IoT modules. USB 2.0 full-speed OTG provides local provisioning and firmware recovery interfaces. The XLP deep-sleep modes below 1 µA enable years of battery life on coin-cell-powered environmental sensors.
Recomendado
Portable Medical Glucose / Patient Monitor
Battery-powered medical devices benefit from the PIC24FJ256GA406-I/PT's XLP technology, which delivers sleep currents below 1 µA while preserving RTC operation for time-stamped patient records. The 24-channel 10-bit ADC multiplexes multiple biosensors (glucose strips, temperature, pulse oximetry) through a single MCU, while the segmented LCD driver displays readings directly on the meter housing. Hardware AES-128 encryption meets HIPAA data-at-rest requirements for stored patient logs in Flash. The 2.0-3.6 V wide operating range accepts direct connection to a single CR2032 coin cell or a 2xAA alkaline pack, eliminating external boost regulators.
Recomendado
Building Automation HMI with LCD Keypad
HVAC controllers, access panels, and security keypads leverage the PIC24FJ256GA406-I/PT's segmented LCD driver to display multi-line status messages, time, and temperature without an external LCD controller chip. The on-chip AES engine authenticates BACnet or Modbus commands between panels and the central BMS, preventing unauthorized control access. Five CCP modules generate PWM for damper motors, valve actuators, and LED backlight dimming without additional timer ICs. The 64-pin TQFP package provides ample I/O for keypad scanning matrices up to 8x8, while PPS remapping lets PCB designers optimize trace routing under the LCD glass.
Recomendado
USB Data Logger / Tethered Sensor
The PIC24FJ256GA406-I/PT's integrated USB 2.0 full-speed OTG transceiver eliminates an external PHY chip in tethered data loggers, directly connecting to a host PC for high-speed log retrieval. With 16 MIPS performance and 16 KB RAM, the MCU can sample multiple sensors at 100 kHz aggregate rates, buffer bursts in SRAM, and stream over USB in real time. The 256 KB dual-partition Flash stores bootloaders and application code with field-upgradeable firmware via USB. PPS flexibility allows the same firmware to support USB, UART, or SPI host connections by remapping pins at runtime without hardware redesign.
Recomendado
Automotive Dashboard Sub-Display
While the PIC24FJ256GA406-I/PT is industrial-temperature graded (-40 C to +85 C), its segmented LCD driver and CAN-friendly peripherals make it suitable for aftermarket motorcycle, marine, and powersports dashboards where automotive-grade qualification is not required. The integrated charge pump keeps LCD contrast stable across the wide temperature range encountered in motorcycle gauge clusters. Five CCP modules drive tachometer, speedometer, and fuel gauge stepper motors simultaneously, while the 24-channel ADC reads multiple analog sender inputs. PPS pin mapping simplifies routing in space-constrained dashboard enclosures.
Recomendado
Wearables with Segmented OLED/LCD Display
Fitness bands and smart watches benefit from the PIC24FJ256GA406-I/PT's XLP nanoWatt technology, providing 20 nA deep-sleep current to extend coin-cell battery life beyond one year. The segmented LCD driver directly interfaces with low-power reflective displays, drawing zero current when the screen content is static, unlike OLED displays that require constant refresh. Hardware AES-128 secures Bluetooth pairing and over-the-air health data syncs to mobile apps. The compact 64-pin TQFP (10x10 mm) package fits inside small wearable enclosures while exposing enough I/O for heart-rate sensor I²C buses and accelerometer SPI interfaces via PPS remapping.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC24FJ256GA406-I/PT — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC24FJ256GA406T-I/PT | PIC24FJ256GA106-I/PT | PIC24FJ128GA006-I/PT | DSPIC33EV64GM006-I/PT | DSPIC33EP256MU810-I/PT |
|---|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - identical | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 256 KB | 256 KB | 256 KB | 128 KB | 64 KB | 256 KB |
| RAM | 16 KB | 16 KB | 16 KB | 8 KB | 8 KB | 20 KB |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 70 MIPS (DSP) | 70 MIPS (DSP) |
| AES-128 Crypto Engine | Yes | Yes | No | No | No | No |
| USB 2.0 OTG | Yes (integrated PHY) | Yes (integrated PHY) | No | No | No | Yes (integrated PHY) |
| Segmented LCD Driver | Yes (up to 100 segments) | Yes (up to 100 segments) | No | No | No | No |
| XLP NanoWatt Sleep | Yes (down to 20 nA) | Yes (down to 20 nA) | Yes | Yes | Partial | No |
| 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 | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Param Match Percentage | 100% | 100% | 80% | 70% | 70% | 80% |
Diferenciadores clave
- Integrated AES-128 hardware crypto engine (frente a PIC24FJ256GA106-I/PT)
- Segmented LCD driver with charge pump (frente a DSPIC33EP256MU810-I/PT)
- XLP nanoWatt sleep down to 20 nA (frente a DSPIC33EV64GM006-I/PT)
Notas de diseño
Estimated: at VDD=3.3 V and 32 MHz active mode, the PIC24FJ256GA406-I/PT draws approximately 15 mA typical (per Microchip datasheet DC characteristics). For battery-powered designs, leverage the XLP deep-sleep mode with the on-chip RTCC to achieve 20 nA standby current while maintaining calendar time. Place a 10 µF tantalum plus 100 nF ceramic decoupling capacitor pair within 5 mm of each VDD pin (28, 60) to suppress switching transients during peripheral wake-up events.
Route the segmented LCD bias lines (SEG/COM) away from high-frequency digital traces to minimize coupling into the analog charge-pump output. Per Microchip application note AN587, keep LCD traces short and shielded with a ground guard ring to reduce ghosting. The USB D+/D- traces (pins 22, 23) must be 90-ohm differential and length-matched within 2 mm to meet USB 2.0 full-speed compliance. The 12 MHz or 16 MHz crystal traces to OSCI/OSCO should be < 5 mm and guarded by a ground pour.
Do not skip the external 10 µF bulk capacitor on VUSB3V3 (pin 25) - the internal USB transceiver requires this for stable DP/DN signalling. Per the Microchip datasheet 70000575B, peripheral pin select (PPS) registers must be configured immediately after Reset and before any peripheral initialization; remapping later causes transient glitches on remapped I/O. The CONFIG words must be programmed with the correct IESO and FNOSC bits to ensure fail-safe clock switching from the internal FRC to the external crystal after startup.
Información de cumplimiento
RoHS compliant per Microchip product page. Industrial temperature grade (-40 C to +85 C). Not AEC-Q100 qualified - this is a non-automotive part. Halogen-free status not explicitly stated in provided data.
