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LC01707PLF Datasheet(PDF) 9 Page - Sanyo Semicon Device |
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LC01707PLF Datasheet(HTML) 9 Page - Sanyo Semicon Device |
9 / 18 page LC01707PLF No.A1928-9/18 Communication specification Communication specifications are indicated as below: Serial Interface (I 2C-bus); Sending and receiving data through I 2C-bus that consists of two bus lines of a serial data line (SDA) and a serial clock line (SCL). This bus enables 8-bit bi-directional serial data to transmit at the maximum speed of 400kbits (fast mode). This is not compatible with Hs mode. Terms used in I 2C The following terms are used in I 2C Terms Description Transmitter Device to send data to the bus Receiver Device to receive from the bus Master Device to start data transmission, generate signal, and terminate data transmission Slave Device of which address is designated master [Start] and [Stop] conditions [Start] condition is required at the start of data communication and [Stop] condition at the end of data communication. The condition in which the SDA line changes from [H] to [L] with SCL at [H] is called the [Start] condition. The condition in which the SDA line changes from [L] to [H] with SCL at [H] is called the [Start] condition. Data transmission The length of each byte which is output to SDA line is always 8 bits. An acknowledge bit is needed after each byte. Data is transmitted sequentially from the most significant bit (MSB). During the data transfer, the slave address is transmitted after the [Start] condition (S). Data transfer is always ended by the [Stop] condition (P) generated by the master. D7 D6 D1 D0 P Sr 1 2 7 Sr or P S or Sr 8 9 12 3-8 9 SDA SCL ACK:acknowledgement MSB START or repeated START condition ACK signal from slave Byte complate, interrupt within slave Clock line held low while interrrupts are serviced Clock pulse for ACK Clock pulse for ACK ACK signal from receiver STOP or repeated START condition SDA SCL S P SDA SCL START condition STOP condition |
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