LPC2157_09 Datasheet, PDF (16/45 Pages) NXP Semiconductors – Single-chip 16-bit/32-bit microcontrollers; 512 kB flash, with 32 segment x 4 LCD driver

NXP Semiconductors
LPC2157/2158
Single-chip 16-bit/32-bit microcontrollers
In case of LPC2158 only, an 8 kB SRAM block intended to be utilized mainly by the USB
can also be used as a general purpose RAM for data storage and code storage and
execution.
6.4 Memory map
The LPC2157/2158 memory map incorporates several distinct regions, as shown in
Figure 6.
In addition, the CPU interrupt vectors may be remapped to allow them to reside in either
flash memory (the default) or on-chip static RAM. This is described in Section 6.19
“System control”.
4.0 GB
3.75 GB
3.5 GB
AHB PERIPHERALS
APB PERIPHERALS
0xFFFF FFFF
0xF000 0000
0xE000 0000
3.0 GB
RESERVED ADDRESS SPACE
0xC000 0000
2.0 GB
1.0 GB
BOOT BLOCK (RE-MAPPED FROM
ON-CHIP FLASH MEMORY
RESERVED ADDRESS SPACE
32 kB ON-CHIP STATIC RAM (LPC2157/2158)
RESERVED ADDRESS SPACE
512 kB ON-CHIP NON-VOLATILE MEMORY
(LPC2157/2158)
0x8000 0000
0x7FFF FFFF
0x7FFF D000
0x7FFF CFFF
0x4001 8000
0x4000 7FFF
0x4000 4000
0x0008 0000
0x0007 FFFF
0.0 GB
0x0001 0000
002aad402
Fig 6. LPC2157/2158 memory map
6.5 Interrupt controller
The Vectored Interrupt Controller (VIC) accepts all of the interrupt request inputs and
categorizes them as Fast Interrupt Request (FIQ), vectored Interrupt Request (IRQ), and
non-vectored IRQ as defined by programmable settings. The programmable assignment
scheme means that priorities of interrupts from the various peripherals can be dynamically
assigned and adjusted.
LPC2157_2158_2
Product data sheet
Rev. 02 — 9 February 2009
© NXP B.V. 2009. All rights reserved.
16 of 45