PIC24FJ256GB412T-I/BG - 256KB Flash 16-bit XLP USB MCU | Microchip
MPN: PIC24FJ256GB412T-I/BG ✓ NakahandaPIC24FJ256GB412T-I/BG Ulas
What is a PIC24FJ 16-bit microcontroller? The PIC24FJ is Microchip's 16-bit modified-Harvard MCU family that sits between 8-bit PIC MCUs and 32-bit ARM Cortex-M parts in the broader microcontroller hierarchy (MCU -> 16-bit MCU -> microcontroller -> embedded IC -> semiconductor). Devices in this family combine deterministic interrupt latency with low-power operation and rich peripherals, making them well suited to battery-powered IoT and human-interface products.
Key features include 256 KB dual-partition Flash (allowing live firmware updates), 16 KB SRAM, hardware AES/SHA cryptographic acceleration, USB 2.0 On-The-Go with PHY, segmented LCD driver (up to 512 segments depending on package), eXtreme Low Power modes with nanoWatt technology, multiple timers, 12-bit ADC, and peripheral pin select. The 121-pin TFBGA package exposes the maximum peripheral count and pin count for this family.
Architecturally, the device uses a modified Harvard core with separate program and data paths, hardware multiply/divide, and a 16-bit wide instruction set. Dual-partition Flash supports a bootloader plus live application update, while the cryptographic engine accelerates AES, DES, SHA and HMAC operations without CPU overhead, offloading security-critical work and reducing time spent in active mode.
Typical applications include secure IoT edge nodes, USB peripherals (HID, CDC, mass storage, audio), battery-powered metering and wearables with LCD displays, secure payment terminals, and home appliances needing crypto-authenticated firmware updates. The integrated USB OTG eliminates external PHY cost in dongle-style designs.
When designing with this device, budget for decoupling capacitors on every VDD/VSS pair and follow Microchip's TFBGA PCB layout guidelines for proper BGA fanout and via-in-pad or microvia escape routing. Operating voltage is 2.0 V to 3.6 V; verify your LCD charge-pump and USB signal integrity with the family data sheet DS30010089E.
This page synthesizes distributor pricing, parametric comparisons, and practical design notes for engineers evaluating the PIC24FJ256GB412T-I/BG, complementing the official Microchip data sheet.
Mga alternatibo na pwedeng ilagay na PIC24FJ256GB412T-I/BG — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok PIC24FJ256GB412T-I/BG (parehas na form factor at footprint) — pagkakaiba sa Package, ADC, Core Architecture, Program Memory (Flash), Operating Temperature.
PIC24FJ256GB412-I/BG
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC24FJ128GB412T-I/BG
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC24FJ256GA610T-I/BG
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC24FJ1024GB610-I/BG
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC24FJ256GB610T-I/BG
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
PIC24FJ128GA610T-I/BG
✅ Drop-In ⚠️ Mga Talaan Hindi NaiwerikmoMagkontak para sa presyo
Tingnan ang Datasheet →PIC24FJ256GB412T-I/BG Mga Pinakamataas na Rating at Electrical Characteristics
| Core Architecture | PIC24F 16-bit modified Harvard |
| Program Flash Memory | 256 KB (dual partition) |
| SRAM | 16 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage | 2.0 V to 3.6 V |
| Cryptographic Engine | Hardware AES/DES/SHA/HMAC |
| USB Interface | USB 2.0 On-The-Go with PHY |
| LCD Driver | Segmented LCD, up to 512 segments (package dependent) |
| ADC | 12-bit A/D converter |
| Timers | Multiple 16-bit and 32-bit timers |
| Packhaging | 121-pin TFBGA (10x10x1.20 mm) |
| Uri ng Pagpapasok | Surface Mount (Tape and Reel, "T" suffix) |
| Temperature na Operasyon | -40 C to +85 C (Industrial, "I") |
| Low-Power Technology | eXtreme Low Power (XLP), nanoWatt |
| Peripheral Pin Select | Yes (PPS) |
| Tindminan RoHS | Compliant |
Gabay sa Pin Configuration ng PIC24FJ256GB412T-I/BG 121-pin tfbga (10x10x1.20 mm)
Pin configuration para sa PIC24FJ256GB412T-I/BG (121-pin tfbga (10x10x1.20 mm) package). Kasama sa digital IC na ito ang GPIO, mga communication interface (UART, SPI, I2C), at mga power pin. Sumangguni sa datasheet ng manufacturer para sa mga alternatibong function ng pin at mga opsyon sa configuration. Mahalaga para sa disenyo ng embedded system at PCB layout.
Wala ng detalyadong pinout data na magagamit para sa PIC24FJ256GB412T-I/BG.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
PIC24FJ256GB412T-I/BG ay nararapat para sa 6 aplikasyons: Secure IoT Edge Nodes, USB Human Interface Devices, Battery-Powered Metering with LCD, Secure Payment Terminals, Medical Wearables, Home Appliance HMI with Crypto.
Secure IoT Edge Nodes
The PIC24FJ256GB412T-I/BG fits secure IoT edge nodes through its integrated hardware cryptographic engine (AES, DES, SHA, HMAC) which offloads TLS handshakes from the CPU. Its 256 KB dual-partition Flash supports OTA firmware updates while one partition remains active, eliminating downtime during secure firmware rollout. XLP nanoWatt technology reduces sleep current to microamp levels, enabling multi-year coin-cell operation for connected sensors.
Inirekomenda
USB Human Interface Devices
USB 2.0 On-The-Go with on-chip PHY allows the PIC24FJ256GB412T-I/BG to implement HID, CDC, mass storage, and audio-class USB peripherals without an external ULPI chip. The 16 MIPS core runs Microchip's USB stack with low interrupt latency, while 16 KB SRAM buffers USB packets comfortably. Active current stays low enough for bus-powered peripherals that meet USB suspend requirements.
Inirekomenda
Battery-Powered Metering with LCD
The integrated segmented LCD driver eliminates external charge-pump and segment-driver ICs in metering designs, while XLP sleep currents below 1 microamp extend battery life across multi-year deployments. 256 KB Flash stores calibration tables and rolling interval logs. PPS remaps analog and digital peripherals to avoid LCD segment pin conflicts during PCB layout.
Inirekomenda
Secure Payment Terminals
Hardware AES/SHA acceleration on the PIC24FJ256GB412T-I/BG performs PIN-block encryption and MAC computation without exposing keys in software, supporting PCI PTS payment-terminal architectures. Segmented LCD directly drives transaction prompts without an auxiliary display controller. The 121-pin BGA exposes USB, secure smart-card UART, and tamper inputs on a compact board.
Inirekomenda
Medical Wearables
XLP technology drives the PIC24FJ256GB412T-I/BG into nanoamp sleep between sensor samples, enabling continuous health monitoring for days on small Li-ion batteries. The 12-bit ADC captures bioelectric signals with adequate resolution for heart-rate and SpO2 front-ends, and segmented LCD shows real-time vitals on the wearable display without a separate graphics controller.
Inirekomenda
Home Appliance HMI with Crypto
Authenticating firmware updates for connected appliances is critical for consumer safety. The PIC24FJ256GB412T-I/BG's hardware crypto engine verifies signed firmware blobs during OTA updates, while the LCD driver renders touch-and-turn UI prompts. USB OTG enables factory provisioning via a standard micro-USB cable, and XLP idle currents keep standby power under 0.5 W for energy-star compliance.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for PIC24FJ256GB412T-I/BG — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | PIC24FJ256GB412-I/BG | PIC24FJ128GB412T-I/BG | PIC24FJ256GA610T-I/BG |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 121-TFBGA (10x10x1.20 mm) | 121-TFBGA (BG) - same | 121-TFBGA (BG) - same | 121-TFBGA (BG) - same |
| Flash Memory | 256 KB | 256 KB | 128 KB (-50%) | 256 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 32 KB (+100%) |
| USB OTG | Yes (USB 2.0 OTG with PHY) | Yes | Yes | No |
| Hardware Crypto | AES/DES/SHA/HMAC | AES/DES/SHA/HMAC | AES/DES/SHA/HMAC | AES/DES/SHA/HMAC |
| Maximum CPU Speed | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) |
| 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 |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Pricing (1pc, approx) | $8.20 | $8.20 (same die) | $7.30 (smaller Flash) | $9.10 (more RAM) |
Pangunahing mga Pagkakaiba
- Hardware cryptographic engine integrated on-chip (kumpara saPIC24FJ256GA412 (no crypto engine))
- Dual-partition Flash for live firmware updates (kumpara saSingle-partition PIC24F MCUs)
- USB 2.0 OTG with on-chip PHY (kumpara saPIC24FJ256GA610 (no USB OTG))
Talaan ng Disenyo
The 121-ball TFBGA at 0.5 mm pitch requires 4-layer PCB with 0.8 mm microvia escape or via-in-pad construction per Microchip's BGA layout guidelines. Fanout signals directly to inner layers; route the USB DP/DM differential pair as 90 ohm impedance-controlled traces no longer than 50 mm and place the ESD protection diode within 5 mm of the connector.
Place 100 nF X7R decoupling capacitors on every VDD/VSS pair as close as physically possible to the BGA balls - the 121-pin BGA has multiple supply pairs that all need local bypass. Add a single 4.7 uF bulk capacitor near the device. Keep analog AVDD and digital VDD separated by ferrite beads to prevent digital switching noise coupling into ADC measurements.
Do not exceed 3.6 V on any I/O pin - the PIC24FJ256GB412T-I/BG is a 3.3 V part and is not 5 V tolerant. USB VBUS sensing requires the internal USB regulator to be enabled via configuration bits; failing to do so causes USB enumeration failure. The crypto engine must be enabled through the CFGWORD fuse before AES instructions will execute.
USB 2.0 DP/DM traces must be 90 ohm differential with no more than one via per trace; route over a continuous ground plane with no splits. LCD segment traces are high-impedance and susceptible to coupling; keep them away from switching signals like PWM or USB and add ground shielding where segment lines cross noisy regions.
Estimated: at full 32 MHz operation the PIC24FJ256GB412T-I/BG draws around 15 mA active, dissipating roughly 50 mW at 3.3 V. The 121-ball TFBGA has adequate thermal performance for this dissipation level; no heatsink is required for industrial temperature operation. However, in sealed enclosures above +60 C ambient, derate to 16 MIPS or enable XLP idle between compute bursts.
Impormasyon ng Pagsunod sa Kautusan
ROHS3 Compliant per full-electronic.com listing. Industrial temperature grade (-40 C to +85 C). Not AEC-Q100 qualified - choose AEC-Q100 qualified PIC24 variants for automotive applications.
