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TMP93CS41 датащи(PDF) 77 Page - Toshiba Semiconductor |
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TMP93CS41 датащи(HTML) 77 Page - Toshiba Semiconductor |
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77 / 248 page ![]() TMP93CS40/TMP93CS41 2004-02-10 93CS40-75 3.5.9 Port 8 (P80 to P87) Port 8 is an 8-bit general-purpose I/O port. I/O can be set on a bit basis. Resetting sets port 8 as an input port and connects a pull-up resistor. It also sets all bits of the output latch register P8 to 1. In addition to functioning as a general-purpose I/O port, port 8 also functions as an input for 16-bit timer 4 and 5 clocks, an output for 16-bit timer F/F 4, 5, and 6 output, and an input for INT0. Writing “1” in the corresponding bit of the port 8 function register (P8FC) enables those functions. Resetting resets the function register P8CR, P8FC value to “0” and sets all bits to input ports. (1) P80 to P86 Figure 3.5.18 Port 8 (P80 to P86) Direction control (on bit basis) Reset P8CR write P82 (TO4) P83 (TO5) P86 (TO6) P8 write P8 read Selector A B S Function control (on bit basis) P8FC write Selector B A S P-ch Programmable pull up S Output latch Timer F/F out TO4: Timer 4 TO5: Timer 4 TO6: Timer 5 Programmable pull up P-ch Reset S Output latch P8 write P8 read Direction control (on bit basis) P8CR write Selector A B S TI4, TI5 TI6, TI7 P80 (TI4/INT4) P81 (TI5/INT5) P84 (TI6/INT6) P85 (TI7/INT7) |
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