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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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AT89C5122DS-RDRUM 데이터시트(PDF) 56 Page - ATMEL Corporation |
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AT89C5122DS-RDRUM 데이터시트(HTML) 56 Page - ATMEL Corporation |
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56 / 208 page  56 AT83R5122, AT8xC5122/23 4202F–SCR–07/2008 The “Port51” is described in Figure 23. Figure 23. Quasi Bi-directional Port Push-pull Output Configuration The push-pull output configuration has the same pull-down structure as both the open drain and the quasi-bi-directional output modes, but provides a continuous strong pull- up when the port latch contains a logic 1. The push-pull mode may be used when more source current is needed from a port output. The Push-pull port configuration is shown in Figure 24. Figure 24. Push-pull Output Input with Medium or Weak Pull-up Configuration The input with pull-up (Input MPU and Input WPU) configuration is shown in Figure 25. 2 CPU Input Pin Strong Weak Medium N P P P CLOCK DELAY Port Latch Data Data DPU (AUXR.7) Vss vcc vcc vcc Pin Strong N P Port latch Data PMOS NMOS |
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