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C167CS Datasheet(PDF) 160 Page - Infineon Technologies AG |
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C167CS Datasheet(HTML) 160 Page - Infineon Technologies AG |
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160 / 517 page  C167CS Derivatives Parallel Ports User’s Manual 7-33 V2.0, 2000-07 7.8 Port 4 If this 8-bit port is used for general purpose IO, the direction of each line can be configured via the corresponding direction register DP4. P4 Port 4 Data Register SFR (FFC8H/E4H) Reset Value: - - 00H 15 14 13 12 11 10 9876 543210 P4.7 P4.6 P4.5 P4.4 P4.3 P4.2 P4.1 P4.0 - - - - - - - - rw rw rw rw rw rw rw rw Bit Function P4.y Port data register P4 bit y DP4 P4 Direction Ctrl. Register SFR (FFCAH/E5H) Reset Value: - - 00H 15 14 13 12 11 10 98765 43210 DP4 .7 DP4 .6 DP4 .5 DP4 .4 DP4 .3 DP4 .2 DP4 .1 DP4 .0 - - - - - - - - rw rw rw rw rw rw rw rw Bit Function DP4.y Port direction register DP4 bit y DP4.y = 0: Port line P4.y is an input (high-impedance) DP4.y = 1: Port line P4.y is an output |
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