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H8/3021 Datasheet(PDF) 175 Page - Renesas Technology Corp |
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H8/3021 Datasheet(HTML) 175 Page - Renesas Technology Corp |
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175 / 712 page  7. I/O Ports Rev.2.00 Mar. 22, 2007 Page 151 of 684 REJ09B0352-0200 7.6 Port 6 7.6.1 Overview Port 6 is a 4-bit input/output port that is also used for input and output of bus control signals ( WR, RD, AS, and WAIT). Figure 7.16 shows the pin configuration of port 6. In modes 1, 3, 5, and 6 the pin functions are WR, RD, AS, and P6 0/WAIT. In mode 7, port 6 is a generic input/output port. Pins in port 6 can drive one TTL load and a 90-pF capacitive load. They can also drive a Darlington transistor pair. Port 6 P6 / P6 / P6 / P6 / 5 4 3 0 WR RD AS WAIT Port 6 pins WR RD AS P60 Modes 1, 3, 5 and 6 P6 P6 P6 P6 5 4 3 0 Mode 7 (input/output) (input/output) (input/output) (input/output) (output) (output) (output) (input/output)/ WAIT (input) Figure 7.16 Port 6 Pin Configuration 7.6.2 Register Descriptions Table 7.8 summarizes the registers of port 6. |
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