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M37274EFSP 参数 Datasheet PDF下载

M37274EFSP图片预览
型号: M37274EFSP
PDF下载: 下载PDF文件 查看货源
内容描述: 单片8位CMOS单片机结合闭合字幕解码器和屏幕显示控制器 [SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER]
分类和应用: 解码器显示控制器微控制器和处理器外围集成电路光电二极管瞄准线计算机可编程只读存储器时钟
文件页数/大小: 148 页 / 1926 K
品牌: RENESAS [ RENESAS TECHNOLOGY CORP ]
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MITSUBISHI MICROCOMPUTERS  
M37274EFSP  
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER  
and ON-SCREEN DISPLAY CONTROLLER  
Serial I/O Mode Register  
b7b6 b5b4b3 b2b1b0  
0 0  
Serial I/O mode register (SM) [Address 021316]  
B
Name  
Functions  
R W  
R W  
After reset  
Internal synchronous  
clock selection bits  
(SM0, SM1)  
0, 1  
0
b1 b0  
0
0
1
1
0: f(XIN)/4 or f(XCIN)/4  
1: f(XIN)/16 or f(XCIN)/16  
0: f(XIN)/32 or f(XCIN)/32  
1: f(XIN)/64 or f(XCIN)/64  
Synchronous clock  
selection bit (SM2)  
0
0
R W  
R W  
2
3
0: External clock  
1: Internal clock  
Port function  
0: P1  
1, P13  
selection bit (SM3)  
1: SCL1, SDA1  
Port function  
selection bit (SM4)  
0: P1  
1: SCL2, SDA2  
2
, P1  
4
0
0
R W  
R W  
4
5
0: LSB first  
1: MSB first  
Transfer direction  
selection bit (SM5)  
Fix these bits to “0.”  
0
R W  
6, 7  
Fig. 21. Serial I/O Mode Register  
27  
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