LPC1788FBD208K

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Full model: LPC1788FBD208K

Manufacturer: NXP Semiconductors

Core architecture: ARM Cortex-M3 (32-bit microcontroller)

Package: LQFP-208 (208-pin, low-power quad flat package)

Operating temperature: -40°C ~ +85°C (industrial grade)

Operating voltage: 2.4V ~ 3.6V (single power supply)

CPU main frequency: 120 MHz (maximum)

Flash memory: 512 KB (supports ISP/IAP programming)

SRAM: 96 KB (including 64 KB local SRAM + 32 KB USB dedicated RAM)

Peripheral interface: USB 2.0 OTG, 10/100 Ethernet MAC, CAN 2.0B, 8x UART, 4x I²C, 4x SPI/SSP

ADC/DAC: 12-bit ADC (8 channels, 1 MHz sampling rate) / 10-bit DAC

Timer: 4x 32-bit timer, PWM output, RTC

GPIO number: 160 (supports 5V tolerant input)

Description

The LPC1788FBD208K is an ARM Cortex-M3 based microcontroller for embedded applications requiring a high level of integration and low power dissipation. The ARM Cortex-M3 is a next generation core that offers better performance than the ARM7 at the same clock rate and other system enhancements such as modernized debug features and a higher level of support block integration. The ARM Cortex-M3 CPU incorporates a 3-stage pipeline and has a Harvard architecture with separate local instruction and data buses, as well as a third bus with slightly lower performance for peripherals. The ARM Cortex-M3 CPU also includes an internal prefetch unit that supports speculative branches. The LPC1788FBD208K adds a specialized flash memory accelerator to accomplish optimal performance when executing code from flash. The LPC1788FBD208K operates at up to 120 MHz CPU frequency. The peripheral complement of the LPC1788FBD208K includes up to 512 kB of flash program memory, up to 96 kB of SRAM data memory, up to 4032 byte of EEPROM data memory, External Memory Controller (EMC), LCD (LPC178x only), Ethernet, USB Device/Host/OTG, a General Purpose DMA controller, five UARTs, three SSP controllers, three I2C-bus interfaces, a Quadrature Encoder Interface, four general purpose timers, two general purpose PWMs with six outputs each and one motor control PWM, an ultra-low power RTC with separate battery supply and event recorder, a windowed watchdog timer, a CRC calculation engine, up to 165 general purpose I/O pins, and more. The analog peripherals include one eight-channel 12-bit ADC and a 10-bit DAC.

Features

   1. High-performance Cortex-M3 core:

       - Supports Thumb-2 instruction set with hardware divider and single-cycle multiplier.

       - MPU (memory protection unit) enhances system security.

   2. Rich peripheral integration:

       - LCD controller (supports up to 1024×768 resolution, TFT/STN screen).

       - EMC (external memory controller): supports SRAM/ROM/Flash/SDRAM (16-bit/32-bit bus).

   3. Low-power design:

       - Multiple power saving modes (sleep/deep sleep/power-down mode), deep sleep current as low as 50μA.

   4. Industrial-grade reliability:

       - Complies with IEC 60730 (home appliance safety standard) and IEC 61508 (functional safety).

Applications

   1. Communications:

       - Point-of-sale terminals, web servers, multi-protocol bridges

   2. Industrial/Medical:

       - Automation controllers, application control, robotics control, HVAC, PLC, inverters, circuit breakers, medical scanning, security monitoring, motor drive, video intercom

   3. Consumer/Appliance:

       - Audio, MP3 decoders, alarm systems, displays, printers, scanners, small appliances, fitness equipment

   4. Automotive:

       - After-market, car alarms, GPS/fleet monitors

Pin Function (LQFP-208 Package Pin)

Development Support

   1. Development Tool Chain

       - IDE: Keil MDK, IAR Embedded Workbench, NXP MCUXpresso.

       - Debug interface: JTAG/SWD (through standard 20-pin interface).

   2. Evaluation board

       - Official development board: LPC1788-EVB (including LCD interface, Ethernet, USB and other peripherals).

   3. Software library

       - LPCOpen: Free peripheral driver library provided by NXP (supports CMSIS standard).

Design considerations

   1. Power management:

       - An independent 3.3V analog power supply (pin AVDD) is required for the analog part (ADC/DAC).

       - It is recommended to connect a 0.1μF + 10μF capacitor in parallel to the VDD pin for decoupling.

   2. EMC interface wiring:

       - The external memory bus (EMC_D[0:15]) needs to be routed with equal length to reduce signal delay differences.

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