Nxp Semiconductors UM10237 用户手册

UM10237_2

User manual

Rev. 02 — 19 December 2008

16 of 792

How to read this chapter

The memory addressing and mapping for different LPC2400 parts depends on flash size,
EMC size, and the LCD peripheral, see

Table 2–13

Memory map and peripheral addressing

ARM processors have a single 4 GB address space. The following table shows how this
space is used on NXP embedded ARM devices.

UM10237

Chapter 2: LPC24XX Memory mapping

Rev. 02 — 19 December 2008

User manual

Table 13.

LPC2400 memory options and addressing

Flash

LCD

EMC

Memory map

Table 2–19

;

Table 2–21

Figure 2–8

LPC2458

512 kB

16-bit

Table 2–14

LPC2420

flashless

32-bit

Table 2–15

LPC2460

flashless

32-bit

Table 2–15

LPC2468

512 kB

32-bit

Table 2–16

LPC2470

flashless

yes

32-bit

Table 2–15

LPC2478

512 kB

yes

32-bit

Table 2–16

Table 14.

LPC2458 memory usage and details

Address range

General use

Address range details and description

0x0000 0000 to
0x3FFF FFFF

On-chip non-volatile
memory and Fast I/O

0x0000 0000 - 0x0007 FFFF

Flash Memory (512 kB)

0x3FFF C000 - 0x3FFF FFFF

Fast GPIO registers

0x4000 0000 to
0x7FFF FFFF

On-chip RAM

0x4000 0000 - 0x4000 FFFF

RAM (64 kB)

0x7FE0 0000 - 0x7FE0 3FFF

Ethernet RAM (16 kB)

0x7FD0 0000 - 0x7FD0 3FFF

USB RAM (16 kB)

0x8000 0000 to
0xDFFF FFFF

Off-Chip Memory

Two static memory banks, 16 MB each

0x8000 0000 - 0x80FF FFFF

Static memory bank 0

0x8100 0000 - 0x81FF FFFF

Static memory bank 1

Two dynamic memory banks, 256 MB each

0xA000 0000 - 0xAFFF FFFF

Dynamic memory bank 0

0xB000 0000 - 0xBFFF FFFF

Dynamic memory bank 1

0xE000 0000 to
0xEFFF FFFF

APB Peripherals

36 peripheral blocks, 16 kB each

0xF000 0000 to
0xFFFF FFFF

AHB peripherals