LPC2129 NXP Semiconductors, LPC2129 Datasheet - Page 12

• Manufacturer Part Number: LPC2129
• Description: Single-chip 16/32-bit microcontrollers; 64/128/256 kB ISP/IAP fash
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Product data sheet
LPC2109_2119_2129_6
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
3.75 GB
4.0 GB
3.5 GB
3.0 GB
2.0 GB
1.0 GB
0.0 GB
Rev. 06 — 10 December 2007
256 kB ON-CHIP FLASH MEMORY (LPC2129)
128 kB ON-CHIP FLASH MEMORY (LPC2119)
16 kB ON-CHIP STATIC RAM (LPC2119/2129)
64 kB ON-CHIP FLASH MEMORY (LPC2109)
8 kB ON-CHIP STATIC RAM (LPC2109)
BOOT BLOCK (RE-MAPPED FROM
RESERVED ADDRESS SPACE
RESERVED ADDRESS SPACE
RESERVED ADDRESS SPACE
ON-CHIP FLASH MEMORY)
AHB PERIPHERALS
APB PERIPHERALS
LPC2109/2119/2129
Single-chip 16/32-bit microcontrollers
002aad174
0xFFFF FFFF
0xF000 0000
0xEFFF FFFF
0xE000 0000
0xDFFF FFFF
0xC000 0000
0x8000 0000
0x7FFF FFFF
0x7FFF E000
0x7FFF DFFF
0x4000 4000
0x4000 3FFF
0x4000 1FFF
0x4000 0000
0x3FFF FFFF
0x0004 0000
0x0003 FFFF
0x0002 0000
0x0001 FFFF
0x0001 0000
0x0000 FFFF
0x0000 0000
© NXP B.V. 2007. All rights reserved.
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