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9202 Datasheet(PDF) 49 Page - STMicroelectronics |
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9202 Datasheet(HTML) 49 Page - STMicroelectronics |
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49 / 175 page  49/175 UPSD3254A, UPSD3254BV, UPSD3253B, UPSD3253BV 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 CMOS compatible interface Bidirectional I/O port with internal pull-ups Schmitt input. TTL compatible interface Pull-up when reset Address Latch Enable Program Strobe Enable PORT1 < 7:4 > I/O Bidirectional I/O port with internal pull-ups Schmitt input CMOS compatible interface Analog input option I/O an_enb USB - , USB + Bidirectional I/O port Schmitt input TTL compatible interface I/O + – |
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