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S3C4510B 参数 Datasheet PDF下载

S3C4510B图片预览
型号: S3C4510B
PDF下载: 下载PDF文件 查看货源
内容描述: 三星S3C4510B的16位/ 32位RISC微控制器是一款高性价比,高性能的基于以太网的系统微控制器解决方案。 [Samsungs S3C4510B 16/32-bit RISC microcontroller is a cost-effective, high-performance microcontroller solution for Ethernet-based systems.]
分类和应用: 微控制器以太网
文件页数/大小: 422 页 / 2160 K
品牌: SAMSUNG [ SAMSUNG ]
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S3C4510B  
SYSTEM MANAGER  
SCLK  
MCLKO  
nECS  
tNECS  
tCOH  
tNECS  
tACC  
tACS  
tNROE  
tNROE  
nOE  
Address  
Data  
tCOS  
tADDRd  
Addr  
Data  
tWs  
tWh  
nEWAIT  
Data Read Point  
(tCOH = 1)  
tACS = 1 (1 cycle)  
tCOS = 1 (1 cycle)  
tACC = 1 (2 cycles)  
tCOH = 1 (1 cycle)  
Figure 4-13. External I/O Read Timing with nEWAIT  
The nEWAIT should be valid at the first SCLK falling edge after nOE active. In this case, tCOS and tCOH need  
to have a minimum of one cycle, and by the setting of tCOS value slower device can be supported. Naimly,  
nEWAIT valid time depends on tCOS value. Deassertion timing depends on the applied Ext. I/O devices.  
When the nEWAIT de-assert, it must be synchronized with MCLKO rising edge.(Because we can not detect  
SCLK falling edge.) If not, memory state machine can go into the wrong state.  
4-29  
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