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NXP-LPC1857JET256

原廠/品牌：	NXP	上架日期：	02/28
供應商：	NXP	產品類別：	MCU

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.

零件編號	封裝	規格說明	單價	庫存	最小量	購量
LPC1857JET256,551	SOT360-1	32-bit ARM Cortex-M3 MCU; up to 1 MB flash and 136 kB SRAM; Ethernet, two High-speed USB, LCD, EMC	洽詢	0 週	1	洽詢

功能和優勢

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

應用

■ Industrial
■ Consumer
■ White goods
■ RFID readers
■ e-Metering

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