On-chip sram – NXP Semiconductors LPC24XX UM10237 User Manual
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© NXP B.V. 2009. All rights reserved.
User manual
Rev. 04 — 26 August 2009
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NXP Semiconductors
UM10237
Chapter 1: LPC24XX Introductory information
8.
On-chip SRAM
The LPC2400 includes a SRAM memory of 64 kB reserved for the ARM processor
exclusive use. This RAM may be used for code and/or data storage and may be accessed
as 8 bits, 16 bits, and 32 bits.
A 16 kB SRAM block serving as a buffer for the Ethernet controller and a 16 kB SRAM
associated with the second AHB bus can be used both for data and code storage, too.
Remaining SRAM such as a 4 kB USB FIFO and a 2 kB RTC SRAM can be used for data
storage only. The RTC SRAM is battery powered and retains the content in the absence of
the main power supply.