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UPSD325X 数据表(PDF) 48 Page - STMicroelectronics |
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UPSD325X 数据表(HTML) 48 Page - STMicroelectronics |
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48 / 176 page  µPSD325X DEVICES 48/176 Figure 18. PORT Type and Description (Part 2) AI06654 Symbol Circuit Function In/ Out PORT1 <3:0>, PORT3, PORT4<7:3,1:0> PORT2 I/O PORT4.2 Bidirectional I/O port with internal pull-ups Schmitt input Sink current : 5mA CMOS compatible interface Source current =5mA when push-pull output mode. Bidirectional I/O port with internal pull-ups Schmitt input. Sink current : 5mA TTL compatible interface Pull-up when reset Address Latch Enable Program Strobe Enable Source current =5mA PORT1 < 7:4 > I/O Bidirectional I/O port with internal pull-ups Schmitt input Sink current : 5mA CMOS compatible interface Analog input option Source current =5mA I/O an_enb USB - , USB + Bidirectional I/O port Schmitt input TTL compatible interface I/O + - |
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