UM10360 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
User manual Rev. 3 — 19 December 2013 13 of 841
2.1 Memory map and peripheral addressing
The ARM Cortex-M3 processor has a single 4 GB address space. The following table
shows how this space is used on the LPC176x/5x.
2.2 Memory maps
The LPC176x/5x incorporates several distinct memory regions, shown in the following
figures. Figure 3
shows the overall map of the entire address space from the user
program viewpoint following reset. The interrupt vector area supports address remapping,
which is described later in this section.
UM10360
Chapter 2: LPC176x/5x Memory map
Rev. 3 — 19 December 2013 User manual
Table 3. LPC176x/5x memory usage and details
Address range General Use Address range details and description
0x0000 0000 to
0x1FFF FFFF
On-chip non-volatile
memory
0x0000 0000 - 0x0007 FFFF For devices with 512 kB of flash memory.
0x0000 0000 - 0x0003 FFFF For devices with 256 kB of flash memory.
0x0000 0000 - 0x0001 FFFF For devices with 128 kB of flash memory.
0x0000 0000 - 0x0000 FFFF For devices with 64 kB of flash memory.
0x0000 0000 - 0x0000 7FFF For devices with 32 kB of flash memory.
On-chip SRAM 0x1000 0000 - 0x1000 7FFF For devices with 32 kB of local SRAM.
0x1000 0000 - 0x1000 3FFF For devices with 16 kB of local SRAM.
0x1000 0000 - 0x1000 1FFF For devices with 8 kB of local SRAM.
Boot ROM 0x1FFF 0000 - 0x1FFF 1FFF 8 kB Boot ROM with flash services.
0x2000 0000 to
0x3FFF FFFF
On-chip SRAM
(typically used for
peripheral data)
0x2007 C000 - 0x2007 FFFF AHB SRAM - bank 0 (16 kB), present on
devices with 32 kB or 64 kB of total SRAM.
0x2008 0000 - 0x2008 3FFF AHB SRAM - bank 1 (16 kB), present on
devices with 64 kB of total SRAM.
GPIO 0x2009 C000 - 0x2009 FFFF GPIO.
0x4000 0000 to
0x5FFF FFFF
APB Peripherals 0x4000 0000 - 0x4007 FFFF APB0 Peripherals, up to 32 peripheral blocks,
16 kB each.
0x4008 0000 - 0x400F FFFF APB1 Peripherals, up to 32 peripheral blocks,
16 kB each.
AHB peripherals 0x5000 0000 - 0x501F FFFF DMA Controller, Ethernet interface, and USB
interface.
0xE000 0000 to
0xE00F FFFF
Cortex-M3 Private
Peripheral Bus
0xE000 0000 - 0xE00F FFFF Cortex-M3 related functions, includes the
NVIC and System Tick Timer.
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