Datasheet
LPC122X All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 2 — 26 August 2011 17 of 61
NXP Semiconductors
LPC122x
32-bit ARM Cortex-M0 microcontroller
7.5 Nested Vectored Interrupt Controller (NVIC)
The Nested Vectored Interrupt Controller (NVIC) is an integral part of the Cortex-M0. The
tight coupling to the CPU allows for low interrupt latency and efficient processing of late
arriving interrupts.
7.5.1 Features
• Controls system exceptions and peripheral interrupts.
Fig 4. LPC122x memory map
0x5000 0000
0x5001 0000
0x5002 0000
AHB peripherals
3 - 6 reserved
GPIO PIO1
1
0x5003 0000
GPIO PIO2
2
0x5007 0000
0x5008 0000
CRC
7
GPIO PIO0
0
APB peripherals
0x4000 4000
0x4000 8000
0x4000 C000
0x4001 0000
0x4001 8000
0x4002 0000
0x4003 8000
0x4003 C000
0x4004 0000
0x4004 4000
0x4004 8000
0x4004 C000
0x4008 0000
0x4002 4000
0x4001 C000
0x4001 4000
0x4000 0000
WDT
32-bit counter/timer 0
32-bit counter/timer 1
ADC
UART0
UART1
PMU
I
2
C-bus
9 - 13 reserved
22 - 31 reserved
0
1
2
3
4
5
6
7
8
16
15
14
17
18
reserved
reserved
0x0000 0000
0 GB
4 GB
1 GB
0x0000 C000
0x0000 8000
0x1000 1000
0x1FFF 0000
0x1FFF 2000
0x4000 0000
0x4008 0000
0x5000 0000
0x5008 0000
0xFFFF FFFF
reserved
reserved
APB peripherals
AHB peripherals
4 kB SRAM (LPC1224)
0x1000 2000
8 kB SRAM (LPC1225/6/7)
0x1FFC 0000
reserved
0x1FFC 4000
16 kB NXP library ROM
0x1FFE 0000
reserved
0x1FFE 2000
8 kB custom ROM
reserved
0x1000 0000
LPC122x
48 kB on-chip flash (LPC1224/121)
32 kB on-chip flash (LPC1224/101)
0x0001 0000
64 kB on-chip flash (LPC1225/301)
0x0001 4000
80 kB on-chip flash (LPC1225/321)
0x0001 8000
96 kB on-chip flash (LPC1226/301)
0x0002 0000
128 kB on-chip flash (LPC1227/301)
8 kB boot ROM
0x0000 0000
0x0000 00C0
active interrupt vectors
reserved
SSP
16-bit counter/timer 1
16-bit counter/timer 0
IOCONFIG
system control
0x4005 0000
19
micro DMA registers
0x4005 4000
20
RTC
0x4005 8000
21
comparator 0/1
reserved
002aaf270
0xE000 0000
0xE010 0000
private peripheral bus