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SC73C1402 Datasheet(PDF) 4 Page - Silan Microelectronics Joint-stock |
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SC73C1402 Datasheet(HTML) 4 Page - Silan Microelectronics Joint-stock |
4 / 19 page SC73C1402 HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.1 2005.12.19 Http: www.silan.com.cn Page 4 of 20 SOP-20/SSOP-20 project 3 P00 P01 P02 P03 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 20 19 18 17 P13 RSTN GND XT2 XT1 VDD P53 P52 P23 P51 P22 P11 P12 P20 P21 P10 PIN DESCRIPTION Symbol Description VDD GND Power supply (2.0V~4.0V) RSTN Reset active low P50 P-channel open-drain output XT1 Crystal oscillator output XT2 Crystal oscillator input P00~P03 4-bit input pin (with internal pull-down resistor). This pin is used for keyboard scan and to control internal circuit. P10~P13 4-bit I/O port (It can be set to input or output by program, with internal pull-down resistor). In input mode, it can be used for keyboard scan. In output mode, used for keyboard scan output. P20~P23 4-bit I/O port (It can be set to input or output by program, with internal pull-down resistor). In input mode, it can be used for keyboard scan. In output mode, can be used for keyboard scan output. P30~P33 4-bit output pin can be used for keyboard scan output. P52 It can be set input/output mode by mask option. In output mode, have large current when output high level(can be used to drive LED). In input mode, it can be used for keyboard scan input. P53 Outputs remote signal with carrier. P51 It can be set input/output mode by mask option. In output mode, it can be used for keyboard scan output. In input mode, it can be used for keyboard scan input. |
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