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NAND04GA3C2A датащи(PDF) 20 Page - STMicroelectronics |
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NAND04GA3C2A датащи(HTML) 20 Page - STMicroelectronics |
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20 / 51 page ![]() 6 Device operations NAND04GA3C2A, NAND04GW3C2A 20/51 Figure 6. Random Data Output 6.4 Cache Read The Cache Read operation is used to improve the read throughput by reading data using the Cache Register. As soon as the user starts to read one page, the device automatically loads the next page into the Cache Register. An Cache Read operation consists of three steps (see Table 8): 1. One bus cycle is required to setup the Cache Read command (the same as the standard Read command). 2. Five bus cycles are then required to input the Start Address (refer to Table 6). 3. One bus cycle is required to issue the Cache Read confirm command to start the P/E/R Controller. The Start Address must be at the beginning of a page (Column Address = 000h, see Table 7.). This allows the data to be output uninterrupted after the latency time (tBLBH1), see Figure 7. I/O RB Address Inputs ai08658b Data Output Busy tBLBH1 (Read Busy time) 000h Cmd Code 30h Address Inputs Data Output 05h E0h 5 Add cycles Main Area Spare Area Col Add 1,2 Row Add 1,2,3 Cmd Code Cmd Code Cmd Code 2Add cycles Main Area Spare Area Col Add 1,2 R |
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