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H8/3003 Datasheet(PDF) 268 Page - Renesas Technology Corp |
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H8/3003 Datasheet(HTML) 268 Page - Renesas Technology Corp |
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268 / 715 page  9.4 Port 6 9.4.1 Overview Port 6 is a 3-bit input/output port that is also used for input and output of bus control signals ( BACK, BREQ, and WAIT). Port 6 has the same set of pin functions in all operating modes. Figure 9-7 shows the pin configuration of port 6. Pins in port 6 can drive one TTL load and a 90-pF capacitive load. They can also drive a darlington transistor pair. Figure 9-7 Port 6 Pin Configuration 9.4.2 Register Descriptions Table 9-6 summarizes the registers of port 6. Table 9-6 Port 6 Registers Address* Name Abbreviation R/W Initial Value H'FFC9 Port 6 data direction register P6DDR W H'80 H'FFCB Port 6 data register P6DR R/W H'80 Note: * Lower 16 bits of the address. Port 6 P6 (input/output)/ P6 (input/output)/ P6 (input/output)/ 2 1 0 BACK BREQ WAIT (output) (input) (input) Port 6 pins 250 |
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