LPC1857 Datasheet PDF

●Overview

●The LPC185x/3x/2x/1x are ARM Cortex-M3 based microcontrollers for embedded applications. The ARM Cortex-M3 is a next generation core that offers system enhancements such as low power consumption, enhanced debug features, and a high level of support block integration.

●The LPC185x/3x/2x/1x operate at CPU frequencies of up to 180 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 LPC185x/3x/2x/1x include up to 1 MB of flash and 136 kB of on-chip SRAM, 16 kB of EEPROM memory, a quad SPI Flash Interface (SPIFI), a State Configurable Timer (SCT) subsystem, two High-speed USB controllers, Ethernet, LCD, an external memory controller, and multiple digital and analog peripherals.

●MoreLess

●## Features

● Processor core

● ARM Cortex-M3 processor, running at CPU frequencies of up to 180 MHz

● ARM Cortex-M3 built-in Memory Protection Unit (MPU) supporting eight regions

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

● Non-maskable Interrupt (NMI) input

● JTAG and Serial Wire Debug, serial trace, eight breakpoints, and four watch points

● Enhanced Trace Module (ETM) and Enhanced Trace Buffer (ETB) support

● System tick timer

● On-chip memory

● Up to 1 MB on-chip dual bank flash memory with flash accelerator

● 16 kB on-chip EEPROM data memory

● 136 kB SRAM for code and data use

● Multiple SRAM blocks with separate bus access

● 64 kB ROM containing boot code and on-chip software drivers

● 64 bit of One-Time Programmable (OTP) memory for general-purpose use

● Clock generation unit

● Crystal oscillator with an operating range of 1 MHz to 25 MHz

● 12 MHz internal RC oscillator trimmed to 2 % accuracy over temperature and voltage (1 % accuracy for Tamb = 0 °C to 85 °C)

● Ultra-low power RTC crystal oscillator

● Three PLLs allow CPU operation up to the maximum CPU rate without the need for a high-frequency crystal. The second PLL can be used with the High-speed USB, the third PLL can be used as audio PLL

● Clock output

● Configurable digital peripherals

● State Configurable Timer (SCT) subsystem on AHB

● Global Input Multiplexer Array (GIMA) allows to cross-connect multiple inputs and outputs to event driven peripherals like timers, SCT, and ADC0/1

● Serial interfaces

● Quad SPI Flash Interface (SPIFI) with 1-, 2-, or 4-bit data at rates of up to 52 MB per second

● 10/100T Ethernet MAC with RMII and MII interfaces and DMA support for high throughput at low CPU load. Support for IEEE 1588 time stamping/advanced time stamping (IEEE 1588-2008 v2)

● One High-speed USB 2.0 Host/Device/OTG interface with DMA support and on-chip high-speed PHY (USB0)

● One High-speed USB 2.0 Host/Device interface with DMA support, on-chip full-speed PHY and ULPI interface to an external high-speed PHY (USB1)

● USB interface electrical test software included in ROM USB stack

● Four 550 UARTs with DMA support: one UART with full modem interface; one UART with IrDA interface; three USARTs support UART synchronous mode and a smart card interface conforming to ISO7816 specification

● Up to two C_CAN 2.0B controllers with one channel each. Use of C_CAN controller excludes operation of all other peripherals connected to the same bus bridge

● Two SSP controllers with FIFO and multi-protocol support. Both SSPs with DMA support

● One Fast-mode Plus I²C-bus interface with monitor mode and with open-drain I/O pins conforming to the full I²C-bus specification. Supports data rates of up to 1 Mbit/s

● One standard I²C-bus interface with monitor mode and standard I/O pins

● Two I²S interfaces with DMA support, each with one input and one output

● Digital peripherals

● External Memory Controller (EMC) supporting external SRAM, ROM, NOR flash, and SDRAM devices

● LCD controller with DMA support and a programmable display resolution of up to 1024H x 768V. Supports monochrome and color STN panels and TFT color panels; supports 1/2/4/8 bpp Color Look-Up Table (CLUT) and 16/24-bit direct pixel mapping

● SD/MMC card interface

● Eight-channel General-Purpose DMA controller can access all memories on the AHB and all DMA-capable AHB slaves

● Up to 164 General-Purpose Input/Output (GPIO) pins with configurable pull-up/pull-down resistors

● GPIO registers are located on the AHB for fast access. GPIO ports have DMA support

● Up to eight GPIO pins can be selected from all GPIO pins as edge and level sensitive interrupt sources

● Two GPIO group interrupt modules enable an interrupt based on a programmable pattern of input states of a group of GPIO pins

● Four general-purpose timer/counters with capture and match capabilities

● One motor control PWM for three-phase motor control

● One Quadrature Encoder Interface (QEI)

● Repetitive Interrupt timer (RI timer)

● Windowed watchdog timer

● Ultra-low power Real-Time Clock (RTC) on separate power domain with 256 bytes of battery powered backup registers

● Event recorder with three inputs to record event identification and event time; can be battery powered

● Alarm timer; can be battery powered

● Analog peripherals

● One 10-bit DAC with DMA support and a data conversion rate of 400 kSamples/s

● Two 10-bit ADCs with DMA support and a data conversion rate of 400 kSamples/s. Up to eight analog channels total. Each analog input is connected to both ADCs

● Unique ID for each device

● Power

● Single 3.3 V (2.2 V to 3.6 V) power supply with on-chip internal voltage regulator for the core supply and the RTC power domain

● RTC power domain can be powered separately by a 3 V battery supply

● Four reduced power modes: Sleep, Deep-sleep, Power-down, and Deep power-down

● Processor wake-up from Sleep mode via wake-up interrupts from various peripherals

● Wake-up from Deep-sleep, Power-down, and Deep power-down modes via external interrupts and interrupts generated by battery powered blocks in the RTC power domain

● Brownout detect with four separate thresholds for interrupt and forced reset

● Power-On Reset (POR)

● Available in LQFP208, LBGA256, LQFP144, and TFBGA100 packages

●## Target Applications

● Industrial

● Consumer

● White goods

● RFID readers

● e-Metering

●## Features