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PCA9554ADB 数据表(PDF) 9 Page - NXP Semiconductors |
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PCA9554ADB 数据表(HTML) 9 Page - NXP Semiconductors |
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9 / 20 page  Philips Semiconductors Product data sheet PCA9554/PCA9554A 8-bit I2C and SMBus I/O port with interrupt 2004 Sep 30 9 TYPICAL APPLICATION SW2288 I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 VDD VDD SCL SDA INT RESET MASTER CONTROLLER GND PCA9554/ PCA9554A A2 A1 A0 VSS VDD SUBSYSTEM 3 (e.g. alarm system) SUBSYSTEM 2 (e.g. counter) INT VDD ALARM Controlled Switch (e.g. CBT device) ENABLE 10 k Ω 10 k Ω 10 k Ω 2 k Ω NOTE: Device address configured as 0100100 for this example I/O0, I/O1, I/O2, configured as outputs I/O3, I/O4, I/O5, configured as inputs I/O06, I/O7, are not used and have to be configured as outputs A B 10 k Ω INT (5 V) Figure 11. Typcial application. |
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