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ST10F280 数据表(PDF) 103 Page - STMicroelectronics |
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ST10F280 数据表(HTML) 103 Page - STMicroelectronics |
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103 / 186 page  ST10F280 103/186 12.12 - XPort 10 The XPort10 is enabled by setting XPEN bit 2 of the SYSCON register and bit 3 of the new XPERCON register. On the XBUS interface, the register are not bit-addressable. This 16-bit input port can only read data. There is no output latch and no direction register. Data written to XP10 will be lost. XP10 (C380h) Reset Value: XXXXh 12.12.1 - Alternate Functions of XPort 10 Each line of XPort 10 is also connected to one of the multiplexer of the Analog/Digital Converter. All port lines (XP10.15...XP10.0) can accept analog signals (AN31...AN16) that can be converted by the ADC. No special programming is required for pins that shall be used as analog inputs. The Table 21 summarizes the alternate functions of XPort 10. Figure 51 : PORT10 I/O and Alternate Functions 15 14 13 12 11 10 98 765 432 10 XP10 .15 XP10 .14 XP10 .13 XP10 .12 XP10 .11 XP10 .10 XP10 .9 XP10 .8 XP10 .7 XP10 .6 XP10 .5 XP10 .4 XP10 .3 XP10 .2 XP10 .1 XP10 .0 RRR RRR RR RRR RRR RR Bit Function XP10.y Port data register XP10 bit y (Read only) Table 21 : XPort 10 Alternate Functions XPort 10 Pin Alternate Function P10.0 P10.1 P10.2 P10.3 P10.4 P10.5 P10.6 P10.7 P10.8 P10.9 P10.10 P10.11 P10.12 P10.13 P10.14 P10.15 Analog Input AN16 Analog Input AN17 Analog Input AN18 Analog Input AN19 Analog Input AN20 Analog Input AN21 Analog Input AN22 Analog Input AN23 Analog Input AN24 Analog Input AN25 Analog Input AN26 Analog Input AN27 Analog Input AN28 Analog Input AN29 Analog Input AN30 Analog Input AN31 A/D Converter Input AN31 AN30 AN29 AN28 AN27 AN26 AN25 AN24 AN23 AN22 AN21 AN20 AN19 AN18 AN17 AN16 XPort 10 Alternate Function General Purpose Input XP10.15 XP10.14 XP10.13 XP10.12 XP10.11 XP10.10 XP10.9 XP10.8 XP10.7 XP10.6 XP10.5 XP10.4 XP10.3 XP10.2 XP10.1 XP10.0 |
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