LPC1765FBD100K - 100MHz Cortex-M3 256KB Flash 64KB SRAM MCU | NXP
MPN: LPC1765FBD100K ✓ Hoạt độngLPC1765FBD100K Tóm tắt
An MCU (microcontroller unit) is a single integrated circuit that bundles a CPU core, program memory, data memory and peripherals into one package. The Cortex-M3 core is a 32-bit ARM architecture with a Harvard-style design, a 3-stage pipeline and deterministic interrupt latency, used inside the wider hierarchy of microcontrollers -> embedded processors -> semiconductors. LPC17xx devices sit between simple 8-bit controllers and higher-end application processors, adding USB, CAN and Ethernet-class connectivity without requiring an external host CPU.
Key features of this part include USB 2.0 Device, Host and OTG support, an 8-channel DMA controller for low-CPU-overhead data movement, four UARTs, two CAN controllers, three SSP/SPI interfaces, three I2C interfaces, I2S, an 8-channel 12-bit ADC, a 10-bit DAC, motor-control PWM, a quadrature encoder interface and four general-purpose timers. A 100 MHz core plus 64 kB SRAM allows protocol stacks, graphics touch handling and real-time control to run from one device.
Architecturally the LPC1765 pairs a 32-bit Cortex-M3 core running from an internal PLL-multiplied clock with a large set of on-chip AMBA peripherals, all reachable over AHB/APB buses. The on-chip DMA engine moves ADC samples, USB traffic and display data without involving the CPU, which is what keeps real-time loops deterministic. Power management supports low-power sleep and deep-sleep states for battery-backed designs.
Typical applications include industrial data acquisition and PLC-type controllers, USB-to-serial bridges and protocol converters, CAN-based automotive and machine-control nodes, HMI panels with touch and display interfaces, USB-connected test and measurement equipment, and networked embedded gateways using an external Ethernet PHY.
When designing around this MCU, match crystal and decoupling requirements to the NXP reference design, keep USB impedance-controlled traces at 90 ohm differential and provide a clean 3.3 V rail with bulk plus high-frequency decoupling. Check the maximum I/O current per port pin before driving relays or LED strings.
This page brings together the manufacturer feature set, drop-in alternatives within the same LQFP-100 footprint, and practical layout and power guidance that a datasheet alone does not present in one place.
Bộ thay thế dễ dàng lắp đặt cho LPC1765FBD100K — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với LPC1765FBD100K (cùng hình factor và footprint) — khác nhau ở Package, Quadrature Encoder Interface, Flash Memory, Product Type, DAC.
LPC1766FBD100
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LPC1763FBD100Y
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LPC1768FBD100K
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →LPC1764FBD100K
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →LPC1758FBD100
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LPC1765FBD100K Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M3, 32-bit |
| Maximum CPU Frequency | 100 MHz |
| Flash Memory | 256 kB |
| SRAM | 64 kB |
| Hộp | LQFP-100 (14 x 14 mm) |
| Number of I/O | 70 |
| Điện áp cung cấp | 3.3 V |
| Nhiệt độ hoạt động | -40 C to +85 C |
| USB | USB 2.0 Device, Host and OTG |
| DMA Channels | 8 |
| UART | 4 |
| CAN Controllers | 2 |
| SSP / SPI Interfaces | 3 |
| I2C Interfaces | 3 |
| ADC | 8-channel, 12-bit |
| DAC | 10-bit |
| I2S Interface | Yes |
| Timers | 4 general-purpose timers plus motor-control PWM |
| Quadrature Encoder Interface | Yes |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Hướng dẫn cấu hình chân LPC1765FBD100K lqfp-100 (14 x 14 mm)
Cấu hình chân cho LPC1765FBD100K (lqfp-100 (14 x 14 mm) gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho LPC1765FBD100K.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
LPC1765FBD100K phù hợp cho 6 Áp dụngs: Industrial Data Acquisition and Control Node, USB-to-Serial Bridge and Protocol Converter, CAN-Based Automotive and Machine Control, Human-Machine Interface with Touch and Display, USB-Connected Test and Measurement Equipment, Connected Embedded Gateway with Ethernet.
Industrial Data Acquisition and Control Node
The LPC1765FBD100K suits measurement and control nodes that must combine fast analog sampling with several fieldbus links. Its 8-channel 12-bit ADC can be triggered by timers and moved by the 8-channel DMA engine without loading the CPU, while two CAN controllers and four UARTs cover bus segmentation on the same board. At 100 MHz the Cortex-M3 core has ample headroom for filtering, unit conversion and a supervisory loop. The -40 C to +85 C rating and 70 GPIO in LQFP-100 fit typical industrial control cabinet environments where a small package and long availability are valued.
Được đề xuất
USB-to-Serial Bridge and Protocol Converter
A USB Device, Host and OTG capable Cortex-M3 with 64 kB of SRAM makes the LPC1765FBD100K a natural fit for USB-to-UART, USB-to-RS-485 and USB-to-CAN gateways. The dedicated USB controller plus DMA support sustained data rates while the four UARTs and two CAN channels expose legacy industrial ports to a single USB connection. Firmware can enumerate as CDC-ACM, HID or a vendor-specific class, and the 256 kB of flash accommodates protocol translation tables. The LQFP-100 package also leaves room for galvanic isolation components alongside the transceiver.
Được đề xuất
CAN-Based Automotive and Machine Control
Two integrated CAN controllers, motor-control PWM with position capture and a quadrature encoder interface give the LPC1765FBD100K the control primitives needed for machine and vehicle subsystems. The 100 MHz Cortex-M3 core handles the higher-level control algorithm while the PWM and encoder blocks deliver deterministic timing in hardware. With -40 C to +85 C operation and a 14 x 14 mm LQFP-100 footprint, the part fits space-constrained control electronics. Adding a standalone Ethernet PHY option also allows the same hardware platform to report diagnostics upward.
Được đề xuất
Human-Machine Interface with Touch and Display
The LPC1765FBD100K powers compact HMI panels that combine a display, capacitive or resistive touch controller and a few sensors. Three I2C ports and three SSP/SPI ports address touch controllers, SPI displays and external flash simultaneously, while I2S supports digital audio codecs for status tones or voice prompts. The 8-channel 12-bit ADC and 10-bit DAC can serve analog sensor inputs and a reference or control output. The 8-channel DMA engine refreshes display and touch buffers with minimal CPU intervention, which keeps the interface responsive under multitasked operation.
Được đề xuất
USB-Connected Test and Measurement Equipment
The combination of a 100 MHz Cortex-M3 core, USB 2.0 and an 8-channel 12-bit ADC makes the LPC1765FBD100K well suited to handheld or benchtop instruments that stream samples to a host PC. DMA transfers captured ADC data straight from the peripheral into SRAM buffers while the core formats packets, and the four UARTs and three SSP/SPI ports drive external front-end components, relays or reference sources. The 64 kB of SRAM accommodates double buffering, and the 256 kB of flash holds calibration tables and USB descriptors.
Được đề xuất
Connected Embedded Gateway with Ethernet
For gateways that bridge field buses to a network, the LPC1765FBD100K provides the local processing and USB capability while an external PHY adds Ethernet. The Cortex-M3 handles protocol translation between two CAN or UART links and the network stack, and the on-chip DMA keeps Ethernet traffic from stalling the real-time control loop. The 256 kB flash and 64 kB SRAM are adequate for a lightweight TCP/IP stack plus buffering, and the LQFP-100 package keeps the board compact. The same platform can also serve as a USB-to-Ethernet adapter during commissioning.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LPC1765FBD100K — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | LPC1766FBD100 | LPC1763FBD100Y | LPC1768FBD100 | LPC1764FBD100 | LPC1758FBD100 |
|---|---|---|---|---|---|---|
| Package | LQFP-100 (14 x 14 mm) | LQFP-100 (14 x 14 mm) - same | LQFP-100 (14 x 14 mm) - same | LQFP-100 (14 x 14 mm) - same | LQFP-100 (14 x 14 mm) - same | LQFP-100 (14 x 14 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | ARM Cortex-M3, 32-bit | ARM Cortex-M3, 32-bit | ARM Cortex-M3, 32-bit | ARM Cortex-M3, 32-bit | ARM Cortex-M3, 32-bit | ARM Cortex-M3, 32-bit |
| Maximum CPU Frequency | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
| Flash Memory | 256 kB | 512 kB | 256 kB | 512 kB | 256 kB | 256 kB |
| SRAM | 64 kB | 64 kB | 64 kB | 64 kB | 64 kB | 32 kB |
| USB Support | USB 2.0 Device, Host and OTG | USB 2.0 Device, Host and OTG | USB present, reduced feature set | USB 2.0 Device, Host and OTG | Reduced USB/CAN feature set | No USB, fewer peripherals |
| CAN Controllers | 2 | 2 | Reduced CAN feature set | 2 | Reduced CAN feature set | Reduced CAN feature set |
| Ethernet MAC | No (external PHY required) | No (external PHY required) | No | Yes, on-chip Ethernet MAC | No | No |
| Number of I/O | 70 | 70 | Reduced | 70 | Reduced | Reduced |
Bảo phân biệt quan trọng
- Balanced memory and peripheral set at 256 kB flash with USB, dual CAN and 64 kB SRAM (vsLPC1758FBD100)
- Straightforward memory upgrade path without a PCB change (vsLPC1766FBD100)
- Adds Ethernet MAC in the same socket when networking is required (vsLPC1764FBD100)
- Larger general-purpose peripheral complement than the reduced-variant parts (vsLPC1763FBD100Y)
Ghi chú thiết kế
Decoupling is the single highest-leverage layout decision for a 100 MHz Cortex-M3 design. Place a 100 nF ceramic capacitor at every VDD pin with the shortest possible via connection to the ground plane, and add a bulk 4.7 uF to 10 uF ceramic capacitor near the regulator output. Keep the supply loop area minimal because the internal PLL multiplies the crystal reference and supply noise at 100 MHz translates directly into clock jitter and jitter-induced EMI.
Route USB D+ and D- as a 90 ohm differential pair with continuous reference plane underneath, matched length within 0.5 mm, and no stubs or test pads on the pair. The LQFP-100 footprint leaves only 0.5 mm pitch, so consider a fine-pitch PCB with filled and capped vias directly beneath the device. Keep the crystal loop small, guard it with ground on three sides, and keep switching regulators and their inductors away from the oscillator and ADC input traces.
The 8-channel 12-bit ADC is fed by the same supply rail as the 100 MHz core, so analog inputs will pick up switching and digital crosstalk unless the layout separates them. Route analog traces on a quiet inner layer referenced to a solid ground plane, place an RC anti-alias filter at the pin, and connect the ADC reference pin to a local bypass capacitor. If the application measures microvolt-level signals, add an external instrumentation amplifier instead of relying on the on-chip converter.
Two mistakes account for most first-board failures with this MCU. First, the 3.3 V rail must reach the specified tolerance during the PLL lock sequence, so allow for startup current steps and provide bulk capacitance. Second, several pins are multifunction, and using a pin for its secondary function without checking the pin connect table can silently disable the primary function such as a timer capture or debug output. Always reconcile the schematic against the pin description table before layout release.
Thông tin tuân thủ
RoHS compliance is indicated for the LPC1765FBD100 part listing. The manufacturer publishes environmental quality and shipping information for the LPC1765FBD100 product page; REACH, halogen-free status and conflict-minerals declarations are not stated in the available product information.
