Nxp Semiconductors LPC2194HBD64,151 ARM7 Microcontroller 16kB LQFP 64 LPC2194HBD64,151 数据表

LPC2194_4

© Koninklijke Philips Electronics N.V. 2006. All rights reserved.

 

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.

AHB PERIPHERALS

VPB PERIPHERALS

RESERVED ADDRESS SPACE

BOOT BLOCK (RE-MAPPED FROM

ON-CHIP FLASH MEMORY

RESERVED ADDRESS SPACE

16 KBYTE ON-CHIP STATIC RAM

RESERVED ADDRESS SPACE

256 KBYTE ON-CHIP FLASH MEMORY

0xFFFF FFFF

0xF000 0000
0xEFFF FFFF

0xE000 0000

0xC000 0000

0xDFFF FFFF

0x8000 0000
0x7FFF FFFF

0x7FFF E000
0x7FFF DFFF

0x4001 0000
0x4000 3FFF

0x4000 0000
0x3FFF FFFF

0x0004 0000
0x0003 FFFF

4.0 GB

3.75 GB

3.5 GB

3.0 GB

2.0 GB

1.0 GB

0.0 GB

0x0000 0000

002aaa757