参数资料
型号: EP7311-IV
厂商: Cirrus Logic Inc
文件页数: 32/42页
文件大小: 0K
描述: IC ARM720T MCU 74MHZ 208-LQFP
标准包装: 36
系列: EP7
核心处理器: ARM7
芯体尺寸: 32-位
速度: 74MHz
连通性: 编解码器,EBI/EMI,IrDA,键盘,多媒体编解码器,SPI/Microwire1,UART/USART
外围设备: LCD,LED,MaverickKey,PWM
输入/输出数: 27
程序存储器类型: ROMless
RAM 容量: 56K x 8
电压 - 电源 (Vcc/Vdd): 2.3 V ~ 2.7 V
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 208-LQFP
包装: 托盘
其它名称: 598-1230
38
4341H–MP3–10/07
AT8xC51SND2C/MP3B
Table 9-2.
Priority Levels
A low-priority interrupt is always interrupted by a higher priority interrupt but not by another inter-
rupt of lower or equal priority. Higher priority interrupts are serviced before lower priority
interrupts. The response to simultaneous occurrence of equal priority interrupts is determined by
an internal hardware polling sequence detailed in Table 9-3. Thus, within each priority level
there is a second priority structure determined by the polling sequence. The interrupt control
system is shown in Figure 9-1.
Table 9-3.
Priority within Same Level
IPHxx
IPLxx
Priority Level
0
0 Lowest
0
1
0
2
1
3 Highest
Interrupt Name
Priority Number
Interrupt Address Vectors
Interrupt Request Flag
Cleared by Hardware (H)
or by Software (S)
INT0
0 (Highest Priority)
C:0003h
H if edge, S if level
Timer 0
1
C:000Bh
H
INT1
2
C:0013h
H if edge, S if level
Timer 1
3
C:001Bh
H
Serial Port
4
C:0023h
S
MP3 Decoder
5
C:002Bh
S
Audio Interface
6
C:0033h
S
MMC Interface
7
C:003Bh
S
Two Wire Controller
8
C:0043h
S
SPI Controller
9
C:004Bh
S
A to D Converter
10
C:0053h
S
Keyboard
11
C:005Bh
S
Reserved
12
C:0063h
-
USB
13
C:006Bh
S
Reserved
14 (Lowest Priority)
C:0073h
-
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