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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MICRF507 датащи(PDF) 13 Page - Micrel Semiconductor |
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MICRF507 датащи(HTML) 13 Page - Micrel Semiconductor |
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13 / 47 page  Micrel, Inc. MICRF507 October 2, 2013 13 Revision 2.2 Reading Any number of registers with consecutive addresses, from one up to all 23, can be read. Procedure: • Bring CS active (high). IO is initially an input. • Clock in a byte consisting of the address bits and the R/W bit. The first seven bits are the address (starting with MSB) of the register, or the first register if more than one, to be read. The eighth bit is the R/W bit, which is 1 as this is a read operation. After the R/W bit is clocked in (falling edge of SCLK), the next rising edge on SCLK will enable IO as an output for the duration of the transaction. • Clock out 8 bits per register (one or more) to be read through IO, MSB first. Rising edges of SCLK bring each bit to IO. The user can then conveniently sample the bit at the next falling edge of SCLK. • Bring CS low to end the transaction. IO reverts to being an input. Figure 3 shows how to read one register. To read more registers at consecutive addresses, continue pulsing SCLK eight times for each register to be read before de-asserting CS. Figure 3. Reading a Byte from a Register Figure 4. Definitions of Control Interface Timing Parameters |
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