General description

The LPC15xx are ARM Cortex-M3 based microcontrollers for embedded applications featuring a rich peripheral set with very low power consumption. The ARM Cortex-M3 is a next generation core that offers system enhancements such as enhanced debug features and a higher level of support block integration.

The LPC15xx operate at CPU frequencies of up to 72 MHz. The ARM Cortex-M3 CPU incorporates a 3-stage pipeline and uses a Harvard architecture with separate local instruction and data buses as well as a third bus for peripherals. The ARM Cortex-M3 CPU also includes an internal prefetch unit that supports speculative branching.

The LPC15xx includes up to 256 kB of flash memory, 32 kB of ROM, a 4 kB EEPROM, and up to 36 kB of SRAM. The peripheral complement includes one full-speed USB 2.0 device, two SPI interfaces, three USARTs, one Fast-mode Plus I2C-bus interface, one C_CAN module, PWM/timer subsystem with four configurable, multi-purpose State Configurable Timers (SCTimer/PWM) with input pre-processing unit, a Real-time clock module with independent power supply and a dedicated oscillator, two 12-channel/12-bit, 2 Msamples/s ADCs, one 12-bit, 500 kSamples/s DAC, four voltage comparators with internal voltage reference, and a temperature sensor. A DMA engine can service most peripherals.

For additional documentation related to the LPC15xx parts, see Section 17 “References”.

Features and benefits

■ System:

◆ ARM Cortex-M3 processor (version r2p1), running at frequencies of up to 72 MHz.

◆ ARM Cortex-M3 built-in Nested Vectored Interrupt Controller (NVIC).

◆ System tick timer.

◆ Serial Wire Debug (SWD) with four breakpoints and two watchpoints.

◆ Single-cycle multiplier supported.

◆ Memory Protection Unit (MPU) included.

■ Memory:

◆ Up to 256 kB on-chip flash programming memory with 256 Byte page write and erase.

◆ Up to 36 kB SRAM.

◆ 4 kB EEPROM.

■ ROM API support:

◆ Boot loader with boot options from flash or external source via USART, C_CAN, or USB

◆ USB drivers

◆ ADC drivers

◆ SPI drivers

◆ USART drivers

◆ I2C drivers

◆ Power profiles and power mode configuration with low-power mode configuration option

◆ DMA drivers

◆ C_CAN drivers

◆ Flash In-Application Programming (IAP) and In-System Programming (ISP).

■ Digital peripherals:

◆ Simple DMA engine with 18 channels and 20 programmable input triggers.

◆ High-speed GPIO interface with up to 76 General-Purpose I/O (GPIO) pins

with configurable pull-up/pull-down resistors, open-drain mode,

input inverter, and programmable digital glitch filter.

◆ GPIO interrupt generation capability with boolean pattern-matching

feature on eight external inputs.

◆ Two GPIO grouped port interrupts.

◆ Switch matrix for flexible configuration of each I/O pin function.

◆ CRC engine.

◆ Quadrature Encoder Interface (QEI).

■ Configurable PWM/timer/motor control subsystem:

◆ Up to four 32-bit counter/timers or up to eight 16-bit counter/timers

or combinations of 16-bit and 32-bit timers.

◆ Up to 28 match outputs and 22 configurable capture inputs with input multiplexer.

◆ Up to 28 PWM outputs total.

◆ Dither engine for improved average resolution of pulse edges.

◆ Four State Configurable Timers (SCTimers) for highly flexible,

event-driven timing and PWM applications.

◆ SCT Input Pre-processor Unit (SCTIPU) for processing timer inputs

and immediate handling of abort situations.

◆ Integrated with ADC threshold compare interrupts, temperature sensor,

and analog comparator outputs for motor control feedback using analog signals.

■ Special-application and simple timers:

◆ 24-bit, four-channel, multi-rate timer (MRT) for repetitive interrupt

generation at up to four programmable, fixed rates.

◆ Repetitive interrupt timer for general purpose use.

◆ Windowed Watchdog timer (WWDT).

◆ High-resolution 32-bit Real-time clock (RTC) with selectable 1 s or 1 ms time

resolution running in the always-on power domain. RTC can be used for wake-up

from all low power modes including Deep power-down. (Continue ...)

Applications

■ Motor control

■ Motion drives

■ Digital power supplies

■ Industrial and medical

■ Solar inverters

■ Home appliances

■ Building and factory automation