LPC1857_53 NXP Semiconductors, LPC1857_53 Datasheet - Page 69

• Manufacturer Part Number: LPC1857_53
• Description: The LPC1857/53 are ARM Cortex-M3 based microcontrollers for embedded applications
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC1857_53
Objective data sheet
7.15.3.1 Features
7.15.5.1 Features
7.15.4 SD/MMC card interface
7.15.5 External Memory Controller (EMC)
Many serial flash devices use a half-duplex command-driven SPI protocol for device setup
and initialization and then move to a half-duplex, command-driven 4-bit protocol for
normal operation. Different serial flash vendors and devices accept or require different
commands and command formats. SPIFI provides sufficient flexibility to be compatible
with common flash devices and includes extensions to help insure compatibility with future
devices.
The SD/MMC card interface supports the following modes:
The LPC1857/53 EMC is a Memory Controller peripheral offering support for
asynchronous static memory devices such as RAM, ROM, and NOR flash. In addition, it
can be used as an interface with off-chip memory-mapped devices and peripherals.
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Interfaces to serial flash memory in the main memory map.
Supports classic and 4-bit bidirectional serial protocols.
Half-duplex protocol compatible with various vendors and devices.
Quad SPI Flash Interface (SPIFI) with 1-, 2-, or 4-bit data at rates of up to 40 MB per
second.
Supports DMA access.
Secure Digital memory (SD version 3.0)
Secure Digital I/O (SDIO version 2.0)
Consumer Electronics Advanced Transport Architecture (CE-ATA version 1.1)
Multimedia Cards (MMC version 4.4)
Dynamic memory interface support including single data rate SDRAM.
Asynchronous static memory device support including RAM, ROM, and NOR flash,
with or without asynchronous page mode.
Low transaction latency.
Read and write buffers to reduce latency and to improve performance.
8/16/32 data and 24 address lines-wide static memory support. On parts LPC1820/10
only 8/16 data lines are available.
16 bit and 32 bit wide chip select SDRAM memory support.
Static memory features include:
– Asynchronous page mode read
– Programmable Wait States
– Bus turnaround delay
– Output enable and write enable delays
– Extended wait
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 14 December 2011
32-bit ARM Cortex-M3 microcontroller
LPC1857/53
© NXP B.V. 2011. All rights reserved.
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