PIC24FJ256GA406-I/PT - 256KB Flash 16-bit XLP MCU | Microchip
MPN: PIC24FJ256GA406-I/PT ✓ نشطPIC24FJ256GA406-I/PT نظرة عامة
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.
بدائل مباشرة لـ PIC24FJ256GA406-I/PT — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC24FJ256GA406-I/PT (نفس عامل الشكل والبصمة) — يختلف في Package, Core Architecture, Operating Temperature, ADC, Program Memory (Flash).
PIC24FJ256GA406T-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC24FJ256GA406-I/MR
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC24FJ256GA106-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC24FJ128GA006-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←DSPIC33EV64GM006-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←DSPIC33EP256MU810-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC24FJ256GA406-I/PT الحدود القصوى والخصائص الكهربائية
| 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) |
| العلبة | 64-pin TQFP (10x10 mm) |
| درجة حرارة التشغيل | -40 C to +85 C (Industrial) |
| نوع التركيب | Surface Mount |
| Packing Media | Tray (160 per tray) |
| حالة RoHS | Compliant |
تكوين أطراف PIC24FJ256GA406-I/PT
| دبوس 1 | RG15 — I/O port RG15 |
| دبوس 2 | RP20/RD4 — Remappable I/O RD4 |
| دبوس 3 | RP21/RD5 — Remappable I/O RD5 |
| دبوس 4 | RP22/RD6 — Remappable I/O RD6 |
| دبوس 5 | RP23/RD7 — Remappable I/O RD7 |
| دبوس 6 | RC12 — I/O port RC12 |
| دبوس 7 | RC13 — I/O port RC13 |
| دبوس 8 | RC14 — I/O port RC14 |
| دبوس 9 | RC15 — I/O port RC15 |
| دبوس 10 | RB0 — I/O port RB0 |
| دبوس 11 | RB1 — I/O port RB1 |
| دبوس 12 | RB2 — I/O port RB2 |
| دبوس 13 | RB3 — I/O port RB3 |
| دبوس 14 | RB4 — I/O port RB4 |
| دبوس 15 | RB5 — I/O port RB5 |
| دبوس 16 | RB6 — I/O port RB6 / ICSPCLK |
| دبوس 17 | RB7 — I/O port RB7 / ICSPDAT |
| دبوس 18 | RB8 — I/O port RB8 |
| دبوس 19 | RB9 — I/O port RB9 |
| دبوس 20 | RB10 — I/O port RB10 |
| دبوس 21 | RB11 — I/O port RB11 |
| دبوس 22 | D+ — USB D+ data line |
| دبوس 23 | D- — USB D- data line |
| دبوس 24 | VBUS — USB VBUS sense |
| دبوس 25 | VUSB3V3 — USB internal transceiver supply |
| دبوس 26 | RA0 — I/O port RA0 |
| دبوس 27 | VSS — Ground reference |
| دبوس 28 | VDD — Positive supply voltage (2.0-3.6 V) |
| دبوس 29 | RA1 — I/O port RA1 |
| دبوس 30 | RA2 — I/O port RA2 |
| دبوس 31 | VSS — Ground reference |
| دبوس 32 | RA3 — I/O port RA3 |
| دبوس 33 | RA4 — I/O port RA4 |
| دبوس 34 | RA5 — I/O port RA5 |
| دبوس 35 | RA6 — I/O port RA6 |
| دبوس 36 | RA7 — I/O port RA7 |
| دبوس 37 | RC0 — I/O port RC0 |
| دبوس 38 | RC1 — I/O port RC1 |
| دبوس 39 | RC2 — I/O port RC2 |
| دبوس 40 | RC3 — I/O port RC3 |
| دبوس 41 | RC4 — I/O port RC4 |
| دبوس 42 | RC5 — I/O port RC5 |
| دبوس 43 | RC6 — I/O port RC6 |
| دبوس 44 | RC7 — I/O port RC7 |
| دبوس 45 | RC8 — I/O port RC8 |
| دبوس 46 | RC9 — I/O port RC9 |
| دبوس 47 | RD0 — I/O port RD0 |
| دبوس 48 | RD1 — I/O port RD1 |
| دبوس 49 | RD2 — I/O port RD2 |
| دبوس 50 | RD3 — I/O port RD3 |
| دبوس 51 | RD8 — I/O port RD8 |
| دبوس 52 | RD9 — I/O port RD9 |
| دبوس 53 | RD10 — I/O port RD10 |
| دبوس 54 | RD11 — I/O port RD11 |
| دبوس 55 | RD12 — I/O port RD12 |
| دبوس 56 | RD13 — I/O port RD13 |
| دبوس 57 | RD14 — I/O port RD14 |
| دبوس 58 | RD15 — I/O port RD15 |
| دبوس 59 | RE0 — I/O port RE0 |
| دبوس 60 | VDD — Positive supply voltage (2.0-3.6 V) |
| دبوس 61 | VSS — Ground reference |
| دبوس 62 | RE1 — I/O port RE1 |
| دبوس 63 | RE2 — I/O port RE2 |
| دبوس 64 | RE3 — I/O port RE3 |
التطبيقات النموذجية
PIC24FJ256GA406-I/PT مناسب لـ 7 التطبيقs: 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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC24FJ256GA406-I/PT — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | 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% |
أبرز الفروقات
- Integrated AES-128 hardware crypto engine (مقابلPIC24FJ256GA106-I/PT)
- Segmented LCD driver with charge pump (مقابلDSPIC33EP256MU810-I/PT)
- XLP nanoWatt sleep down to 20 nA (مقابلDSPIC33EV64GM006-I/PT)
ملاحظات التصميم
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.
معلومات الامتثال
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.
