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PCA9538DBRG4 Scheda tecnica(PDF) 21 Page - Texas Instruments |
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PCA9538DBRG4 Scheda tecnica(HTML) 21 Page - Texas Instruments |
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21 / 29 page  www.ti.com APPLICATION INFORMATION A1 A0 SDA SCL INT GND P6 P0 P1 P2 P3 P4 P5 P7 INT GND VCC VCC (5 V) VCC 10 kW 10 kW 10 kW 10 kW 2 kW 100 kW (y3) Master Controller PCA9538 INT RESET Subsystem 2 (e.g., counter) Subsystem 3 (e.g., alarm system) ALARM Controlled Device (e.g., CBT device) ENABLE A B VCC RESET RESET Subsystem 1 (e.g., temperature sensor) SDA SCL PCA9538 REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS SCPS126D – SEPTEMBER 2006 – REVISED MARCH 2007 Figure 14 shows an application in which the PCA9538 can be used. A. Device address is configured as 1110000 for this example. B. P0, P2, and P3 are configured as outputs. C. P1, P4, and P5 are configured as inputs. D. P6 and P7 are not used and must be configured as outputs. Figure 14. Typical Application 21 Submit Documentation Feedback |
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