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ST14C02 データシート(PDF) 8 Page - STMicroelectronics |
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ST14C02 データシート(HTML) 8 Page - STMicroelectronics |
8 / 12 page ST14C02C 8/12 Figure 9. Read Mode Sequences DEV SEL * BYTE ADDR DEV SEL DATA OUT 1 AI01942 DATA OUT N CURRENT ADDRESS READ DEV SEL DATA OUT RANDOM ADDRESS READ DEV SEL * DATA OUT SEQUENTIAL CURRENT READ DATA OUT N DEV SEL * BYTE ADDR SEQUENTIAL RANDOM READ DEV SEL * DATA OUT 1 ACK R/W NO ACK ACK R/W ACK ACK R/W ACK ACK ACK NO ACK R/W NO ACK ACK ACK R/W ACK ACK R/W ACK NO ACK Sequential Read This mode can be initiated with either a Current Address Read or a Random Address Read. How- ever, in this case the master does acknowledge the data byte output, and the memory continues to output the next byte in sequence. To terminate the stream of bytes, the master must not acknowledge the last byte output, and must generate a STOP condition. The output data comes from consecu- tive byte addresses, with the internal byte address counter automatically incremented after each byte output. After the last memory address, the address counter will ‘roll-over’ and the memory will contin- ue to output data from the start of the memory block. Acknowledge in Read Mode In all read modes the memory waits for an ac- knowledgment during the 9th bit time. If the master does not pull the SDA line low during this time, the memory device terminates the data transfer and switches to its standby state. |
同様の部品番号 - ST14C02 |
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同様の説明 - ST14C02 |
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