LPC2470 NXP Semiconductors, LPC2470 Datasheet - Page 27

• Manufacturer Part Number: LPC2470
• Description: NXP Semiconductors designed the LPC2470 microcontroller, powered by theARM7TDMI-S core, to be a highly integrated microcontroller for a wide range ofapplications that require advanced communications and high quality graphic displays
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC2470
Product data sheet
7.2 On-chip SRAM
7.3 Memory map
The Thumb set’s 16-bit instruction length allows it to approach higher density compared to
standard ARM code while retaining most of the ARM’s performance.
The LPC2470 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 can be used both for data and code storage, too. The
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.
The LPC2470 memory map incorporates several distinct regions as shown in
Figure
In addition, the CPU interrupt vectors may be remapped to allow them to reside in either
boot ROM or SRAM (see
Table 5.
Address range General use
0xF000 0000 to
0xFFFF FFFF
0x0000 0000 to
0x3FFF FFFF
0x4000 0000 to
0x7FFF FFFF
0x8000 0000 to
0xDFFF FFFF
0xE000 0000 to
0xEFFF FFFF
4.
LPC2470 memory usage and details
All information provided in this document is subject to legal disclaimers.
On-chip RAM
Off-Chip Memory
APB Peripherals
AHB peripherals
Fast I/O
Rev. 4 — 8 September 2011
Section
7.26.6).
Address range details and description
0x3FFF C000 - 0x3FFF FFFF
0x4000 0000 - 0x4000 FFFF
0x7FE0 0000 - 0x7FE0 3FFF
0x7FD0 0000 - 0x7FD0 3FFF
Four static memory banks, 16 MB each
0x8000 0000 - 0x80FF FFFF
0x8100 0000 - 0x81FF FFFF
0x8200 0000 - 0x82FF FFFF
0x8300 0000 - 0x83FF FFFF
Four dynamic memory banks, 256 MB each
0xA000 0000 - 0xAFFF FFFF
0xB000 0000 - 0xBFFF FFFF
0xC000 0000 - 0xCFFF FFFF
0xD000 0000 - 0xDFFF FFFF
36 peripheral blocks, 16 kB each
Flashless 16-bit/32-bit microcontroller
RAM (64 kB)
USB RAM (16 kB)
Fast GPIO registers
Ethernet RAM (16 kB)
Static memory bank 0
Static memory bank 1
Static memory bank 2
Static memory bank 3
Dynamic memory bank 0
Dynamic memory bank 1
Dynamic memory bank 2
Dynamic memory bank 3
LPC2470
© NXP B.V. 2011. All rights reserved.
Table 5
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and