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Specifications
| Parameter | Value |
|---|---|
| Series | LPC17xx |
| Mounting type | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 2.4V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 100MHz |
| Package | Bulk |
| RAM size | 64K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, Motor Control PWM, POR, PWM, WDT |
| Connectivity | CANbus, Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART, USB OTG |
| Number of i (O) | 70 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 8x12b; D/A 1x10b |
| Program memory size | 256KB (256K x 8) |
Frequently asked questions
Is the LPC1766FBD100 pin-compatible with the LPC1765 or LPC1764?
The three parts share the same 100-LQFP (14x14 mm) mechanical footprint, so the land pattern is compatible. However, Flash (256KB vs 128KB vs 64KB) and RAM sizes differ — a firmware image built for one variant will not run on another without a rebuild and I/O address remap in the IDE. A blind swap on the board requires re-validation of the memory map, not just a part replacement.
What supply voltage does the LPC1766FBD100 need?
2.4V to 3.6V, 3.3V nominal. The 2.4V floor is tight — check your rail under worst-case load before committing the BOM, especially in field deployments with long cable runs or shared supplies.
Does the LPC1766FBD100 need an external crystal for Ethernet or USB?
The internal oscillator is present, but at approximately ±1% frequency tolerance it may not meet USB full-speed or Ethernet PHY reference clock accuracy requirements. Budget for an external crystal on the dedicated oscillator pins for designs using USB OTG or EtherNet/IP at full speed.