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H8S2245 Datasheet(PDF) 282 Page - Renesas Technology Corp |
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H8S2245 Datasheet(HTML) 282 Page - Renesas Technology Corp |
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282 / 818 page  Section 8 I/O Ports Rev.3.00 Mar. 26, 2007 Page 240 of 772 REJ09B0355-0300 8.7 Port A 8.7.1 Overview Port A is an 4-bit I/O port. Port A pins also function as address bus outputs. The pin functions change according to the operating mode. Port A has a built-in MOS input pull-up function that can be controlled by software. Figure 8.6 shows the port A pin configuration. PA3/A19 PA2/A18 PA1/A17 PA0/A16 A19 A18 A17 A16 (output) (output) (output) (output) Port A pins Pin functions in modes 4 and 5 Pin functions in mode 6* PA3 PA2 PA1 PA0 (I/O) (I/O) (I/O) (I/O) Pin functions in modes 1, 2, 3, and 7* PA3 PA2 PA1 PA0 (input)/ (input)/ (input)/ (input)/ A19 A18 A17 A16 (output) (output) (output) (output) Port A Note: * Modes 2, 3, 6, and 7 cannot be used in the H8S/2240. Figure 8.6 Port A Pin Functions 8.7.2 Register Configuration Table 8.11 shows the port A register configuration. |
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