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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ATmega16HVB датащи(PDF) 64 Page - ATMEL Corporation |
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ATmega16HVB датащи(HTML) 64 Page - ATMEL Corporation |
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64 / 273 page  64 8042A–AVR–07/09 ATmega16HVB/32HVB 14.3 Overview 14.4 Alternate Port Functions The High Voltage I/O has alternate port functions in addition to being general digital I/O. Figure 14-3 shows how the port pin control signals from the simplified Figure 14-2 on page 63 can be overridden by alternate functions. Figure 14-3. High Voltage Digital I/O (1)(2) Notes: 1. WRx, RRx and RPx are common to all pins within the same port. clk I/O and SLEEP are com- mon to all ports. All other signals are unique for each pin. 2. The High Voltage Digital Input is not present on PC5. Table 14-1 on page 65 summarizes the function of the overriding signals. The pin and port indexes from Figure 14-3 are not shown in the succeeding tables. The overriding signals are generated internally in the modules having the alternate function. WRx PVOVxn PVOExn PVOExn: Pxn PORT VALUE OVERRIDE ENABLE PVOVxn: Pxn PORT VALUE OVERRIDE VALUE DIEOExn: Pxn DIGITAL INPUT-ENABLE OVERRIDE ENABLE DIEOVxn: Pxn DIGITAL INPUT-ENABLE OVERRIDE VALUE SLEEP Pxn DIEOExn DIEOVxn Q D Q PORTxn _ CLR 1 0 1 0 RRx SYNCHRONIZER Q D CLR PINxn clk I/O Q _ D L Q Q SET CLR _ RESET RPx DIxn RRx: READ PORTx REGISTER WRx: WRITE PORTx REGISTER RPx: READ PINx REGISTER clk I/O: I/O CLOCK DIxn: DIGITAL INPUT PIN n ON PORTx SLEEP: SLEEP CONTROL |
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