參數(shù)資料
型號(hào)： LPC2939FBD208
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： ARM9 microcontroller with CAN, LIN, and USB
中文描述： 32-BIT, FLASH, 125 MHz, RISC MICROCONTROLLER, PQFP208
封裝： 28 X 28 MM, 1.40 MM HEIGHT, PLASTIC, SOT-459, MS-026, LQFP-208
文件頁數(shù)： 62/99頁
文件大?。?/td> 1945K
代理商： LPC2939FBD208
LPC2939_3
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 03 — 7 April 2010
62 of 99
NXP Semiconductors
LPC2939
ARM9 microcontroller with CAN, LIN, and USB
6.17.1
Functional description
The Vectored Interrupt Controller routes incoming interrupt requests to the ARM
processor. The interrupt target is configured for each interrupt request input of the VIC.
The targets are defined as follows:
Target 0 is ARM processor FIQ (fast interrupt service)
Target 1 is ARM processor IRQ (standard interrupt service)
Interrupt-request masking is performed individually per interrupt target by comparing the
priority level assigned to a specific interrupt request with a target-specific priority
threshold. The priority levels are defined as follows:
Priority level 0 corresponds to ‘masked’ (i.e. interrupt requests with priority 0 never
lead to an interrupt)
Priority 1 corresponds to the lowest priority
Priority 15 corresponds to the highest priority
Software interrupt support is provided and can be supplied for:
Testing RTOS (Real-Time Operating System) interrupt handling without using
device-specific interrupt service routines
Software emulation of an interrupt-requesting device, including interrupts
6.17.2
Clock description
The VIC is clocked by CLK_SYS_VIC, see
Section 6.7.2
.
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