PIC24FJ256GB610-I/BG - 256KB Flash USB XLP MCU 121-TFBGA | Microchip
MPN： PIC24FJ256GB610-I/BG ✗ 停產PIC24FJ256GB610-I/BG 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (RAM), and a rich set of peripherals on one silicon die. The PIC24F family sits in the broader taxonomy of 16-bit microcontrollers -> microcontrollers -> embedded processors -> semiconductors. 16-bit MCUs fill the gap between 8-bit parts (limited math and address space) and 32-bit Cortex-M parts (more complex toolchain, higher cost), making them well-suited for moderate-throughput embedded designs with USB connectivity.
Key features of this part include 256 KB of ECC-protected dual Flash (85.5K x 24 organization) with Live Update, 32 KB of RAM, USB OTG with dedicated DMA, multiple serial interfaces (I2C, SPI, UART with IrDA), six PWM channels, eight DMA channels, a 10-bit and 12-bit ADC, and the XLP deep-sleep current regime. The 121-ball TFBGA package supports the device's 121-pin-out at a compact 10x10 mm body height of 1.20 mm, suiting space-constrained applications. The -I temperature grade covers -40C to +85C industrial operation.
Architecturally, the PIC24FJ256GB610 uses a 16-bit modified Harvard CPU with single-cycle multiply, a programmable instruction cache, and a peripheral bus that maps timers, capture/compare, ADC, and the USB SIE through independent DMA channels. The dual-bank Flash with Live Update allows one bank to receive new code while the other executes, enabling firmware upgrades without halting the application - a key benefit for industrial and connected devices.
Typical applications include USB peripherals and embedded hosts (HID, CDC, mass storage), industrial sensor nodes with USB diagnostics, low-power data loggers, and home/building automation controllers. The Live Update feature is particularly attractive in industrial gateways that must be field-upgradable without service windows.
When designing with this part, plan the dual-Flash bank layout early and verify the Live Update boot sequence against your application linker script; the 121-TFBGA requires PCB pads with sub-0.5 mm pitch and reflow profile control to avoid ball-bridge defects. Power-rail decoupling (10 uF + 0.1 uF) must be placed within 5 mm of VDD/VSS balls.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 PIC24FJ256GB610-I/BG — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC24FJ256GB610-I/BG （相同外形與佔位） — 差異在於 Package, ADC, Program Memory (Flash), Core Architecture, Operating Temperature.
PIC24FJ256GA610-I/BG
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC24FJ1024GA610-I/BG
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC24FJ128GA610-I/BG
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC24FJ256GB610-E/BG
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ256GA610T-I/BG
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC24FJ256GB610-I/BG 最大額定值與電氣特性
| Core Architecture | PIC24F 16-bit modified Harvard |
| CPU Core | PIC24 RISC |
| Maximum CPU Speed | 32 MHz |
| Program Flash Memory | 256 KB (85.5K x 24), ECC + dual-bank Live Update |
| RAM | 32 KB |
| USB Interface | USB 2.0 On-The-Go (OTG), integrated PHY, dedicated DMA |
| ADC | 10-bit and 12-bit A/D converter |
| PWM Channels | 6 |
| DMA Channels | 8 |
| Serial Interfaces | I2C (multiple), SPI (multiple), UART with IrDA |
| 供應電壓 | 3.3 V (typical) |
| 工作溫度 | -40C to +85C (Industrial) |
| 封裝 | 121-TFBGA (10x10 mm), 1.20 mm height |
| 安裝類型 | Surface Mount (BGA) |
| RoHS 狀態 | Compliant |
| Low-Power Family | XLP (eXtreme Low Power) with deep-sleep |
| 資料匯流排寬度 | 16-bit external |
PIC24FJ256GB610-I/BG 腳位配置
| 腳位 A1 | VSS — Ground reference |
| 腳位 B5 | VDD — Core supply voltage (3.3 V) |
| 腳位 F10 | D+ — USB data plus (USB OTG) |
| 腳位 F11 | D- — USB data minus (USB OTG) |
| 腳位 G11 | VBUS — USB VBUS detect |
| 腳位 H10 | VUSB — USB transceiver supply (3.3 V) |
| 腳位 K1 | OSC1 — Crystal oscillator input |
| 腳位 K2 | OSC2 — Crystal oscillator output |
| 腳位 J10 | MCLR — Master clear reset (active low) |
| 腳位 G10 | PGEC1 — ICSP programming clock pair 1 |
| 腳位 G9 | PGED1 — ICSP programming data pair 1 |
| 腳位 H11 | PGEC2 — ICSP programming clock pair 2 |
| 腳位 H9 | PGED2 — ICSP programming data pair 2 |
| 腳位 A11 | AVDD — Analog supply voltage |
| 腳位 B11 | AVSS — Analog ground |
典型應用
PIC24FJ256GB610-I/BG 適用於 6 應用s: USB Human Interface Device (HID) Peripherals, Industrial USB Sensor Nodes, Low-Power Data Loggers, Embedded USB Host (Mass Storage / HID), Home and Building Automation Controllers, Industrial Gateways with USB Diagnostics.
USB Human Interface Device (HID) Peripherals
The PIC24FJ256GB610-I/BG is a strong fit for USB HID peripherals such as keyboards, mice, game controllers, and custom input devices because of its integrated USB 2.0 full-speed OTG controller with on-chip PHY and dedicated DMA. With 256 KB of Flash and 32 KB of RAM it can host HID report tables, debounce state, and a small bootloader without external memory. The 32 MHz 16-bit core executes HID report generation at low latency, while XLP deep-sleep extends battery life in wireless HID dongles.
推薦
Industrial USB Sensor Nodes
Industrial sensor nodes that expose a USB diagnostic or configuration port benefit from the PIC24FJ256GB610-I/BG's combination of 256 KB Flash, USB OTG, and -40C to +85C industrial temperature range. The dual-bank Live Update Flash lets a field technician re-flash the node over USB without halting the sensor acquisition loop. The XLP deep-sleep current regime allows battery- or solar-powered remote nodes to sleep between measurements while still servicing USB enumeration when a host is attached.
推薦
Low-Power Data Loggers
The PIC24FJ256GB610-I/BG suits battery-powered data loggers because the XLP deep-sleep current is below 100 nA in retention, while 256 KB of dual-bank Flash provides ample non-volatile storage for time-stamped sensor records. The 12-bit ADC captures analog sensor channels with up to 16-channel scan, and the 8 DMA channels offload sample transfers without waking the CPU. Live Update lets the logger receive new firmware revisions over its USB service port in the field.
推薦
Embedded USB Host (Mass Storage / HID)
For embedded host applications such as USB mass-storage readers, HID dongle gateways, or USB-to-UART bridges, the PIC24FJ256GB610-I/BG provides an integrated USB OTG controller that can act as host or device. According to the Microchip datasheet, the OTG controller includes the necessary session request protocol (SRP) and host negotiation protocol (HNP) signaling. The 32 KB RAM can host a small FAT file system buffer for read-only USB stick playback in kiosks or industrial HMIs.
推薦
Home and Building Automation Controllers
Smart-home and building automation controllers benefit from the PIC24FJ256GB610-I/BG's mix of USB diagnostics, multiple UART/SPI/I2C interfaces for sensor and actuator busses, and the XLP low-power modes that let battery-powered wireless sensors sleep for years. The 256 KB Flash fits a full Modbus, BACnet, or proprietary automation stack with room for OTA update payloads. The 121-TFBGA package integrates these peripherals in a 10x10 mm outline suitable for compact wall-mount controllers.
推薦
Industrial Gateways with USB Diagnostics
The PIC24FJ256GB610-I/BG serves as a USB service-port MCU inside industrial gateways that bridge RS-485, CAN, or Ethernet to a USB diagnostic laptop. The dual-bank Live Update enables field firmware upgrades via USB stick without halting the gateway, a key benefit in 24/7 industrial environments. The 32 KB RAM buffers diagnostic logs, while the 256 KB Flash stores protocol stacks and configuration. Six PWM channels can drive status LEDs and small actuators on the gateway front panel.
推薦
推薦產品摘要
工程參考資料，適用於 PIC24FJ256GB610-I/BG — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC24FJ256GA610-I/BG | PIC24FJ1024GA610-I/BG | PIC24FJ128GA610-I/BG | PIC24FJ256GB610-E/BG | PIC24FJ256GA610T-I/BG |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 121-TFBGA (10x10 mm) | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same |
| Core | PIC24F 16-bit | PIC24F 16-bit | PIC24F 16-bit | PIC24F 16-bit | PIC24F 16-bit | PIC24F 16-bit |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 256 KB | 256 KB | 1024 KB (1 MB) | 128 KB | 256 KB | 256 KB |
| RAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| USB OTG | Yes (integrated PHY) | No | No | No | Yes (integrated PHY) | No |
| Dual-Bank Live Update Flash | Yes | Yes | Yes | Yes | Yes | Yes |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Industrial (-40C to +85C) |
| Lifecycle Status | NRND | Active | Active | Active | NRND | Active |
主要差異化特點
- Integrated USB OTG with on-chip PHY and dedicated DMA (對比PIC24FJ256GA610-I/BG)
- Highest-density dual-bank Flash in the GB6xx family at 121-pin (對比PIC24FJ256GB412-I/BG)
- XLP deep-sleep current below 100 nA in retention (對比PIC24FJ1024GA610-I/BG)
設計說明
Estimated: at 32 MHz with USB full-speed operation, place a 10 uF bulk decoupling capacitor and a 0.1 uF ceramic cap within 5 mm of each VDD/VSS ball pair on the 121-TFBGA. The USB D+/D- traces must be length-matched to within 150 mil and routed over a continuous ground plane to meet USB 2.0 full-speed signal-integrity requirements. VBUS and VUSB require their own 1 uF + 0.1 uF decoupling pair close to their respective balls to stabilize the on-chip USB transceiver.
The 121-TFBGA package has a typical theta-JA of approximately 30-35 C/W on a standard JEDEC 4-layer test board. Estimated: at full 32 MHz CPU speed with USB active and all peripherals engaged, the device may dissipate around 200-300 mW, producing a junction-temperature rise of 6-10 C above ambient. In sealed enclosures without airflow, de-rate CPU clock or use the -E extended-temperature grade for high-ambient deployments above 70 C.
Do not confuse the -I industrial grade (-40C to +85C) with the -E extended grade (-40C to +125C); the BG package outline is identical but the operating life at high temperature differs. Estimated: when migrating from the GB610 to the GA610 family (no USB OTG), the D+/D-, VBUS, and VUSB balls change function on the 121-TFBGA footprint - always re-spin or re-ball-check the layout. The dual-bank Live Update requires linker-script support for the two Flash regions; a stock XC16 project may not enable bank swap out of the box.
合規資訊
RoHS compliant per Microchip product page and LCSC listing. AEC-Q100 not applicable (consumer/industrial grade, not automotive qualified). NRND lifecycle status per Microchip product page as of 2026-09-30.
