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LPC2290 数据表(PDF) 15 Page - NXP Semiconductors

部件名 LPC2290
功能描述  16/32-bit ARM microcontroller with CAN, 10-bit ADC and external memory interface
Download  41 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

LPC2290 数据表(HTML) 15 Page - NXP Semiconductors

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LPC2290_3
© NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 03 — 16 November 2006
15 of 41
NXP Semiconductors
LPC2290
16/32-bit ARM microcontroller with external memory interface
6.4 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.
LPC2290 and LPC2290/01 memory map
AHB PERIPHERALS
VPB PERIPHERALS
RESERVED ADDRESS SPACE
RESERVED ADDRESS SPACE
16 KBYTE ON-CHIP STATIC RAM
64 KBYTE ON-CHIP STATIC RAM (/01 ONLY)
RESERVED ADDRESS SPACE
0xFFFF FFFF
0xF000 0000
0xEFFF FFFF
0xE000 0000
0xDFFF FFFF
0x4000 4000
0x4000 3FFF
0x4001 0000
0x4000 FFFF
0x4000 0000
0x3FFF FFFF
4.0 GB
3.75 GB
3.5 GB
3.0 GB
2.0 GB
1.0 GB
0.0 GB
0x0000 0000
002aaa798
0x8400 0000
0x7FFF FFFF
EXTERNAL MEMORY BANK3
0x83FF FFFF
0x8300 0000
EXTERNAL MEMORY BANK2
0x82FF FFFF
0x8200 0000
EXTERNAL MEMORY BANK1
0x81FF FFFF
0x8100 0000
EXTERNAL MEMORY BANK0
0x80FF FFFF
0x8000 0000
BOOT BLOCK (RE-MAPPED FROM
ON-CHIP ROM MEMORY
0x7FFF E000
0x7FFF DFFF


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