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PSD813F1A Datasheet(PDF) 46 Page - STMicroelectronics |
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PSD813F1A Datasheet(HTML) 46 Page - STMicroelectronics |
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46 / 111 page  Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s) PSD813F1A 46/111 PSD Interface to a Non-Multiplexed 8-Bit Bus Figure 22 shows an example of a system using a microcontroller with an 8-bit non-multiplexed bus and a PSD. The address bus is connected to the ADIO Port, and the data bus is connected to Port A. Port A is in tri-state mode when the PSD is not accessed by the microcontroller. Should the sys- tem address bus exceed sixteen bits, Ports B, C, or D may be used for additional address inputs. Figure 22. An Example of a Typical 8-bit Non-Multiplexed Bus Interface MCU WR RD BHE ALE RESET D [ 7:0] A[ 15:0] A[ 23:16] D [ 7:0] ADIO PORT PORT A PORT B PORT C WR (CNTRL0) RD (CNTRL1) BHE (CNTRL2) RST ALE (PD0) PORT D (OPTIONAL) PSD AI02879C |
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