LPC2290 datasheet(15/41 Pages) NXP

15 / 41 page

LPC2290_3

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

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

LPC2290 Datasheet(PDF) 15 Page - NXP Semiconductors

LPC2290 Datasheet(HTML) 15 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41

Datasheet Download

Link URL