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ST10F280 Datasheet(PDF) 104 Page - STMicroelectronics |
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ST10F280 Datasheet(HTML) 104 Page - STMicroelectronics |
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104 / 239 page ![]() Parallel ports ST10F280 104/239 Doc ID 8673 Rev. 3 P1H Address: 0xFF06h / 83h SFR Reset: 0x--00h Type: R/W DP1L Address: 0xF104h / 82h ESFR Reset: 0x--00h Type: R/W DP1H Address: 0xF106h / 83h ESFR Reset: 0x--00h Type: R/W 12.3.1 Alternate functions of Port 1 When a de-multiplexed external bus is enabled, PORT1 is used as address bus. Note that de-multiplexed bus modes use PORT1 as a 16-bit port. Otherwise all 16 port lines can be used for general purpose I/O. The upper four pins of PORT1 (P1H.7...P1H.4) also serve as capture input lines for the CAPCOM2 unit (CC27IO...CC24IO). 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 --- -- --- P1H.7 P1H.6 P1H.5 P1H.4 P1L.3 P1H.2 P1H.1 P1H.0 R/W R/W R/W R/W R/W R/W R/W R/W P1X.y Port data register P1H or P1L bit y 15 14 13 12 11 10 9 8 7 65432 10 -------- DP1L.7 DP1L.6 DP1L.5 DP1L.4 DP1L.3 DP1L.2 DP1L.1 DP1L.0 R/W R/W R/W R/W R/W R/W R/W R/W 15 14 13 12 11 10 9 8 7 65432 10 -------- R/W R/W R/W R/W R/W R/W R/W R/W DP1X.y Port direction register DP1H or DP1L bit y DP1X.y = 0: Port line P1X.y is an input (high-impedance) DP1X.y = 1: Port line P1X.y is an output |
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