aHARTslaveusingDS8500circuitry
shows a HART slave using DS8500 circuitry and the top-level blocks necessary for an intelligent process transmitter. A temperature process transmitter serves as an example for this circuit. The sensor height=371 alt="Figure 7. DS8500 width=648>
Figure 7. DS8500 on the slave side of HART communication. D_IN receives data from the microcontroller's UART. D_OUT transmits data to the UART. Active-low RST is the DS8500 reset. OCD is a carrier-detect signal that determines a FSK signal with a valid amplitude at the input of the demodulator.
Figure 7. DS8500 on the slave side of HART communication. D_IN receives data from the microcontroller's UART. D_OUT transmits data to the UART. Active-low RST is the DS8500 reset. OCD is a carrier-detect signal that determines a FSK signal with a valid amplitude at the input of the demodulator.
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