参数资料
型号: AT89C51SND2C-7FTUL
厂商: Atmel
文件页数: 46/160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
DS785UM1
6-11
Copyright 2007 Cirrus Logic
Vectored Interrupt Controller
EP93xx User’s Guide
6
Definition:
The VICxRawIntr register provides the status of the source interrupts (and
software interrupts) to the interrupt controller.
Bit Descriptions:
RawIntr:
Shows the status of the interrupts before masking by the
enable registers. A “1” indicates that the corresponding
interrupt request is active before masking.
VICxIntSelect
Address:
VIC1IntSelect: 0x800B_000C - Read/Write
VIC2IntSelect: 0x800C_000C - Read/Write
Definition:
Interrupt Select Register. The VICxIntSelect register selects whether the
corresponding interrupt source generates an FIQ or an IRQ interrupt.
Bit Descriptions:
IntSelect:
Selects type of interrupt for interrupt request:
1 = FIQ interrupt
0 = IRQ interrupt.
VICxIntEnable
Address:
VIC1IntEnable: 0x800B_0010 - Read/Write
VIC2IntEnable: 0x800C_0010 - Read/Write
Default: 0x0000_0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
IntSelect
15
14
13
12
11
10
987654
3210
IntSelect
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
IntEnable
15
14
13
12
11
10
987654
3210
IntEnable
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