LPC2104 Philips Semiconductors (Acquired by NXP), LPC2104 Datasheet - Page 11

• Manufacturer Part Number: LPC2104
• Description: LPC2104/2105/2106; Single-chip 32-bit Microcontrollers; 128 KB Isp/iap Flash With 64 KB/32 KB/16 KB RAM;; Package: SOT313-2 (LQFP48)
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
9397 750 11499
Product data
6.5 Interrupt controller
The Vectored Interrupt Controller (VIC) accepts all of the interrupt request inputs and
categorizes, them as FIQ, vectored 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.
Fast Interrupt reQuest (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 5. LPC2106 memory map.
3.75 GB
4.0 GB
3.5 GB
3.0 GB
2.0 GB
1.0 GB
0.0 GB
Rev. 02 — 11 June 2003
128 KBYTE ON-CHIP FLASH MEMORY
BOOT BLOCK (RE-MAPPED FROM
64 KBYTE ON-CHIP STATIC RAM
RESERVED ADDRESS SPACE
RESERVED ADDRESS SPACE
RESERVED ADDRESS SPACE
ON-CHIP FLASH MEMORY
AHB PERIPHERALS
VPB PERIPHERALS
LPC2104/2105/2106
Single-chip 32-bit microcontrollers
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
002aaa413
0xFFFF FFFF
0xF000 0000
0xEFFF FFFF
0xE000 0000
0xDFFF FFFF
0xC000 0000
0x8000 0000
0x7FFF FFFF
0x7FFF E000
0x7FFF DFFF
0x4001 0000
0x4000 FFFF
0x4000 0000
0x3FFF FFFF
0x0002 0000
0x0001 FFFF
0x0000 0000
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