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ST10F166BQ1 bảng dữ liệu(PDF) 5 Page - STMicroelectronics |
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ST10F166BQ1 bảng dữ liệu(HTML) 5 Page - STMicroelectronics |
5 / 62 page ST10F166 5/62 Table 1. Pin Definition and Function Symbol Pin Number Input (I) Output (O) Function P4.0 – P4.1 16 - 17 16 17 I/O O O Port 4 is a 2-bit bidirectional I/O port. It is bit-wise programmable for input or output via direction bits. For a pin configured as input, the output driver is put into high-impedance state. In case of an external bus configuration, Port 4 can be used to output the segment address lines: P4.0A16Least Significant Segment Addr. Line P4.1A17Most Significant Segment Addr. Line XTAL1 XTAL2 20 19 I O XTAL1:Input to the oscillator amplifier and input to the internal clock generator XTAL2:Output of the oscillator amplifier circuit. To clock the device from an external source, drive XTAL1, while leaving XTAL2 unconnected. Minimum and maximum high/low and rise/fall times specified in the AC Characteristics must be ob- served. BUSACT, EBC1, EBC0 VPP 22 23 24 23 I I I External Bus Configuration selection inputs. These pins are sam- pled during reset and select either the single chip mode or one of the four external bus configurations: BUSACTEBC1EBC0Mode/Bus Configuration 00 0 8-bit demultiplexed bus 00 1 8-bit multiplexed bus 01 0 16-bit muliplexed bus 01 1 16-bit demultiplexed bus 10 0 Single chip mode 10 1 Reserved. 11 0 Reserved. 11 1 Reserved. After reset pin EBC1 accepts the programming voltage for the Flash Memory as an “alternate function”: Flash Memory Programming Voltage VPP =12 V. RSTIN 27 I Reset Input with Schmitt-Trigger characteristics. A low level at this pin for a specified duration while the oscillator is running re- sets the ST10R165. An internal pullup resistor permits power-on reset using only a capacitor connected to V SS. RSTOUT 28 O Internal Reset Indication Output. This pin is set to a low level when the part is executing either a hardware-, a software- or a watchdog timer reset. RSTOUT remains low until the EINIT (end of initialization) instruction is executed. |
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