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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PCA8574ATS датащи(PDF) 5 Page - NXP Semiconductors |
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PCA8574ATS датащи(HTML) 5 Page - NXP Semiconductors |
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5 / 27 page  PCA8574_PCA8574A_2 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 02 — 14 May 2007 5 of 27 NXP Semiconductors PCA8574/74A Remote 8-bit I/O expander for I2C-bus with interrupt Table 3. Pin description for SSOP20 Symbol Pin Description INT 1 interrupt output (active LOW) SCL 2 serial clock line n.c. 3 not connected SDA 4 serial data line VDD 5 supply voltage AD0 6 address input 0 AD1 7 address input 1 n.c. 8 not connected AD2 9 address input 2 P0 10 quasi-bidirectional I/O 0 P1 11 quasi-bidirectional I/O 1 P2 12 quasi-bidirectional I/O 2 n.c. 13 not connected P3 14 quasi-bidirectional I/O 3 VSS 15 supply ground P4 16 quasi-bidirectional I/O 4 P5 17 quasi-bidirectional I/O 5 n.c. 18 not connected P6 19 quasi-bidirectional I/O 6 P7 20 quasi-bidirectional I/O 7 |
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