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ST2189 数据表(PDF) 2 Page - STMicroelectronics |
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ST2189 数据表(HTML) 2 Page - STMicroelectronics |
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2 / 21 page  Pin settings ST2189 2/21 Doc ID 15918 Rev 1 1 Pin settings 1.1 Pin connection Figure 1. Pin connection (top through view) 1.2 Pin description Table 2. Pin description Pin number Type Side Symbol Name and function 1 I/O VCCA A1 Input/output 1. Referenced to VCCA 2 I/O VCCA A2 Input/output 2. Referenced to VCCA 3 I/O VCCA A3 Input/output 3. Referenced to VCCA 4 I/O VCCA A4 Input/output 4. Referenced to VCCA 5- VCCA OE Output enabled. Pull OE low to put all output to tri-state mode. Referenced to VCCA 6- VCCA VCCA A port supply voltage. VCCA ≤ VCCB or VCCA ≥ VCCB 7 I/O VCCA A5 Input/output 5. Referenced to VCCA |
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