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ST10F296 数据表(PDF) 135 Page - STMicroelectronics |
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ST10F296 数据表(HTML) 135 Page - STMicroelectronics |
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135 / 346 page  Obsolete Product(s) - Obsolete Product(s) ST10F296E Parallel ports 135/346 The capture input function of pins P2.7 to P2.0 can be used for external interrupt inputs with a sample rate of eight CPU clock cycles. For pins P2.15 to P2.8, the sampling rate is eight CPU clock cycles when used as capture input, and one CPU clock cycle if used as fast external input. The upper eight Port 2 lines (P2.15 to P2.8) also support fast external interrupt inputs (EX7IN to EX0IN). In addition, P2.15 is the input for CAPCOM2 timer T7 (T7IN). Table 74 summarizes the alternate functions of Port 2. The pins of this port combine internal capture input bus data with compare output alternate data which is output before the port latch input. Figure 36. Port 2 I/O and alternate functions Table 74. Alternate functions of Port 2 P2 pin Alternate function (a) Alternate function (b) Alternate function (c) P2.0 P2.1 P2.2 P2.3 P2.4 P2.5 P2.6 P2.7 P2.8 P2.9 P2.10 P2.11 P2.12 P2.13 P2.14 P2.15 CC0IO CC1IO CC2IO CC3IO CC4IO CC5IO CC6IO CC7IO CC8IO CC9IO CC10IO CC11IO CC12IO CC13IO CC14IO CC15IO - - - - - - - - EX0IN Fast External Interrupt 0 Input EX1IN Fast External Interrupt 1 Input EX2IN Fast External Interrupt 2 Input EX3IN Fast External Interrupt 3 Input EX4IN Fast External Interrupt 4 Input EX5IN Fast External Interrupt 5 Input EX6IN Fast External Interrupt 6 Input EX7IN Fast External Interrupt 7 Input - - - - - - - - - - - - - - - T7IN Timer T7 external count input Port 2 Alternate functions (a) General purpose input/output CAPCOM1 capture input/compare output (b) Fast external interrupt input (c) CAPCOM2 timer T7 input CC7IO CC6IO CC5IO CC4IO CC3IO CC2IO CC1IO CC0IO CC15IO CC14IO CC13IO CC12IO CC11IO CC10IO CC9IO CC8IO EX7IN EX6IN EX5IN EX4IN EX3IN EX2IN EX1IN EX0IN T7IN P2.7 P2.6 P2.5 P2.4 P2.3 P2.2 P2.1 P2.0 P2.15 P2.14 P2.13 P2.12 P2.11 P2.10 P2.9 P2.8 Obsolete Product(s) - Obsolete Product(s) |
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