LPC4350 datasheet(76/145 Pages) NXP

76 / 145 page

LPC4350_30_20_10

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Objective data sheet

Rev. 2.1 — 23 September 2011

76 of 145

NXP Semiconductors

LPC4350/30/20/10

32-bit ARM Cortex-M4/M0 microcontroller

7.17.4.1

Features

• Dynamic memory interface support including single data rate SDRAM.

• Asynchronous static memory device support including RAM, ROM, and 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.

• 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

• Four chip selects for synchronous memory and four chip selects for static memory

devices.

• Power-saving modes dynamically control EMC_CKEOUT and EMC_CLK signals to

SDRAMs.

• Dynamic memory self-refresh mode controlled by software.

• Controller supports 2048 (A0 to A10), 4096 (A0 to A11), and 8192 (A0 to A12) row

address synchronous memory parts. That is typical 512 MB, 256 MB, and 128 MB

parts, with 4, 8, 16, or 32 data bits per device.

• Separate reset domains allow the for auto-refresh through a chip reset if desired.

Note: Synchronous static memory devices (synchronous burst mode) are not supported.

7.17.5 High-speed USB Host/Device/OTG interface (USB0)

Remark: The USB0 controller is available on parts LPC4350/30/20. See Table 2.

The USB OTG module allows the LPC4350/30/20/10 to connect directly to a USB Host

such as a PC (in device mode) or to a USB Device in host mode.

7.17.5.1

Features

• Complies with Universal Serial Bus specification 2.0.

• Complies with USB On-The-Go supplement.

• Complies with Enhanced Host Controller Interface Specification.

• Supports auto USB 2.0 mode discovery.

• Supports all high-speed USB-compliant peripherals.

• Supports all full-speed USB-compliant peripherals.

• Supports software Host Negotiation Protocol (HNP) and Session Request Protocol

(SRP) for OTG peripherals.

• Contains UTMI+ compliant transceiver (PHY).

• Supports interrupts.

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