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C8051F390-A-GM 参数 Datasheet PDF下载

C8051F390-A-GM图片预览
型号: C8051F390-A-GM
PDF下载: 下载PDF文件 查看货源
内容描述: 50 MIPS 16 KB的闪存, 512B EEPROM混合信号MCU [50 MIPS 16 kB Flash, 512B EEPROM Mixed-Signal MCU]
分类和应用: 闪存可编程只读存储器电动程控只读存储器电可擦编程只读存储器
文件页数/大小: 300 页 / 1709 K
品牌: SILICON [ SILICON ]
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C8051F39x/37x  
SFR Definition 17.1. EMI0CN: External Memory Interface Control  
Bit  
7
6
5
4
3
2
1
0
PGSEL  
R/W  
Name  
Type  
Reset  
R
0
R
0
R
0
R
0
R
0
R
0
0
0
SFR Address = 0xAA; SFR Page = All Pages  
Bit  
Name  
Function  
7:2  
1:0  
Unused  
PGSEL  
Read = 000000b; Write = Don’t Care  
XRAM Page Select.  
The PGSEL field provides the high byte of the 16-bit external  
data memory address when using an 8-bit MOVX command,  
effectively selecting a 256-byte page of RAM. Since the upper  
(unused) bits of the register are always zero, the PGSEL deter-  
mines which page of XRAM is accessed.  
For Example: If PGSEL = 0x01, addresses 0x0100 through  
0x01FF will be accessed.  
94  
Preliminary Rev. 0.71  
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