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ST25R3916 数据表(PDF) 58 Page - STMicroelectronics |
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ST25R3916 数据表(HTML) 58 Page - STMicroelectronics |
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58 / 157 page ![]() Application information ST25R3916/7 58/157 DS12484 Rev 4 I2C: master reads slave immediately after the first byte If the I2C master omits the mode byte and reads the ST25R3916/7 immediately after the slave address, then, as shown in Figure 27, it will first output the byte FFh, followed by a register dump starting at addres 01h. This mode is incorporated for an easier the detection of I2C devices, but is not intended to be used in normal operation. Figure 27. I2C master reads slave immediately after the first byte S Slave address R A Data FFh A Data register 01h A ... Data register n N P Legend: S: Start, A: ACK, N: NAK, P: Stop. |
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