参数资料
型号: AT89C51SND2C-7FTUL
厂商: Atmel
文件页数: 36/160页
文件大小: 0K
描述: IC 8051 MCU FLASH 64K MP3 100BGA
标准包装: 260
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 40MHz
连通性: I²C,IDE/ATAPI,MMC,SPI,UART/USART,USB
外围设备: 音频,I²S,MP3,PCM,POR,WDT
输入/输出数: 32
程序存储器容量: 64KB(64K x 8)
程序存储器类型: 闪存
RAM 容量: 2.25K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.3 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 100-TFBGA
包装: 托盘
其它名称: AT89C51SND2C7FTUL
6-2
DS785UM1
Copyright 2007 Cirrus Logic
Vectored Interrupt Controller
EP93xx User’s Guide
6
Figure 6-1. Vectored Interrupt Controller Block Diagram
6.1.1 Interrupt Priority
A FIQ interrupt has the highest priority (because the ARM9 core will always treat FIQ as
higher priority), followed by vectored interrupt 0 to vectored interrupt 15. Non-vectored IRQ
interrupts have the lowest priority. Any of the non-vectored Interrupts can be either FIQ or
IRQ (the interrupt type is determined by programming the appropriate register,
Vector Address and Priority
Logic
Vector Address and
Priority Logic
VIC Daisy Chain
VICINTSOURCE[63:32]
IRQ from VIC1
Vector Addr from VIC1
VICINTSOURCE[31:0]
IRQ
VIC1
VIC0
FIQ from VIC1
ARM920T
FIQ
2
1
2
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