LPC2220 PHILIPS [NXP Semiconductors], LPC2220 Datasheet - Page 16

• Manufacturer Part Number: LPC2220
• Description: 16/32-bit ARM microcontrollers; flashless with 64 kB, with 10-bit ADC and external memory interface
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
9397 750 14061
Product data sheet
6.4.1 Interrupt sources
Non-vectored IRQs have the lowest priority.
The VIC combines the requests from all the vectored and non-vectored IRQs to produce
the IRQ signal to the ARM processor. The IRQ service routine can start by reading a
register from the VIC and jumping there. If any of the vectored IRQs are requesting, the
VIC provides the address of the highest-priority requesting IRQs service routine,
otherwise it provides the address of a default routine that is shared by all the non-vectored
IRQs. The default routine can read another VIC register to see what IRQs are active.
Table 5
one interrupt line connected to the Vectored Interrupt Controller, but may have several
internal interrupt flags. Individual interrupt flags may also represent more than one
interrupt source.
Table 5:
Block
WDT
-
ARM Core
ARM Core
TIMER0
TIMER1
UART0
UART1
PWM0
I
SPI0
SPI1 and SSP
PLL
RTC
System Control
A/D
2
C
lists the interrupt sources for each peripheral function. Each peripheral device has
Interrupt sources
Flag(s)
Watchdog Interrupt (WDINT)
Reserved for software interrupts only
Embedded ICE, DbgCommRX
Embedded ICE, DbgCommTX
Match 0 to 3 (MR0, MR1, MR2, MR3)
Match 0 to 3 (MR0, MR1, MR2, MR3)
RX Line Status (RLS)
Transmit Holding Register empty (THRE)
RX Data Available (RDA)
Character Time-out Indicator (CTI)
RX Line Status (RLS)
Transmit Holding Register empty (THRE)
RX Data Available (RDA)
Character Time-out Indicator (CTI)
Modem Status Interrupt (MSI)
Match 0 to 6 (MR0, MR1, MR2, MR3, MR4, MR5, MR6)
SI (state change)
SPIF, MODF
SPIF, MODF and TXRIS, RXRIS, RTRIS, RORRIS
PLL Lock (PLOCK)
RTCCIF (Counter Increment), RTCALF (Alarm)
External Interrupt 0 (EINT0)
External Interrupt 1 (EINT1)
External Interrupt 2 (EINT2)
External Interrupt 3 (EINT3)
A/D converter
16/32-bit ARM microcontrollers with external memory interface
Rev. 02— 30 May 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
LPC2210/2220
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