Datasheet

LPC2109_2119_2129 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 7 — 14 June 2011 12 of 46
NXP Semiconductors
LPC2109/2119/2129
Single-chip 16/32-bit microcontrollers
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.
FIQ has the highest priority. If more than one request is assigned to FIQ, the VIC
combines the requests to produce the FIQ signal to the ARM processor. The fastest
possible FIQ latency is achieved when only one request is classified as FIQ because then
the FIQ service routine can simply start dealing with that device. But if more than one
request is assigned to the FIQ class, the FIQ service routine can read a word from the VIC
that identifies which FIQ source(s) is (are) requesting an interrupt.
Fig 3. LPC2109/2119/2129 memory map
AHB PERIPHERALS
APB PERIPHERALS
RESERVED ADDRESS SPACE
BOOT BLOCK (RE-MAPPED FROM
ON-CHIP FLASH MEMORY)
RESERVED ADDRESS SPACE
16 kB ON-CHIP STATIC RAM (LPC2119/2129)
8 kB ON-CHIP STATIC RAM (LPC2109)
RESERVED ADDRESS SPACE
256 kB ON-CHIP FLASH MEMORY (LPC2129)
0xFFFF FFFF
0xF000 0000
0xEFFF FFFF
0xE000 0000
0xC000 0000
0xDFFF FFFF
0x8000 0000
0x7FFF FFFF
0x7FFF E000
0x7FFF DFFF
0x4000 4000
0x4000 3FFF
0x4000 0000
0x4000 1FFF
0x3FFF FFFF
0x0004 0000
0x0003 FFFF
0x0002 0000
0x0001 0000
4.0 GB
3.75 GB
3.5 GB
3.0 GB
2.0 GB
1.0 GB
0.0 GB
128 kB ON-CHIP FLASH MEMORY (LPC2119)
64 kB ON-CHIP FLASH MEMORY (LPC2109)
0x0001 FFFF
0x0000 0000
0x0000 FFFF
002aad174