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ST10F296 датащи(PDF) 163 Page - STMicroelectronics |
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ST10F296 датащи(HTML) 163 Page - STMicroelectronics |
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163 / 346 page ![]() Obsolete Product(s) - Obsolete Product(s) ST10F296E Parallel ports 163/346 13.10 Port 8 This is an 8-bit port. If it is used for general purpose I/O, the direction of each line can be configured via the corresponding direction register DP8. Each port line can be switched into push-pull or open-drain mode via the open-drain control register ODP8. In the ST10F296E, XASC (or ASC1) is implemented on pins P8.6 and P8.7. When the module is enabled through the XPERCON register, the corresponding bits P8, DP8 and ODP8 are overwritten by the new XS1PORT register (mapped on the XBus). This allows the user to program pins P8.6 and P8.7 according to the ASC1 configuration. 13.10.1 Port 8 registers P8 register DP8 register P8 (FFD4h/EAh) SFR Reset value: --00h 15 14 13 12 11 10 987 65432 10 --- ----- P8.7 P8.6 P8.5 P8.4 P8.3 P8.2 P8.1 P8.0 --- ----- RW RW RW RW RW RW RW RW Table 97. P8 register description Bit Bit name Function 7-0 P8.y Port data register P8 bit y DP8 (FFD6h/EBh) SFR Reset value: --00h 15 14 13 12 11 10 987 65432 10 --- ----- DP8 .7 DP8 .6 DP8 .5 DP8 .4 DP8 .3 DP8 .2 DP8 .1 DP8 .0 --- ----- RW RW RW RW RW RW RW RW Table 98. DP8 register description Bit Bit name Function 7-0 DP8.y Port direction register DP8 bit y 0: Port line P8.y is an input (high impedance) 1: Port line P8.y is an output Obsolete Product(s) - Obsolete Product(s) |
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