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7702 Datasheet(PDF) 53 Page - Renesas Technology Corp |
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7702 Datasheet(HTML) 53 Page - Renesas Technology Corp |
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53 / 217 page  CENTRAL PROCESSING UNIT (CPU) 7702/7703 Group User’s Manual 2–27 [Precautions when selecting the processor mode] [Precautions when selecting processor mode] 1. For the products operating only in the single-chip mode, be sure to set the following: •Connect the CNVss pin with Vss. •Fix the processor mode bits (bits 1 and 0 at address 5E16) to “002.” 2. The external ROM version is only for the microprocessor mode. Accordingly, be sure to set the following: •Connect the CNVss pin with Vcc. •Fix the processor mode bits (bits 1 and 0 at address 5E16) to “102.” 3. When using the memory expansion mode or microprocessor mode, be sure to set bits 0 and 1 of the port P4 direction register to “0.” _____ _____ ____ ____ Set the above setting whether using P40/HOLD pin as HOLD pin and P41/RDY pin as RDY pin. For also the external ROM version, set the above setting. Additionally, it is not need to set the port P0 to P3 direction registers. |
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