... integrated, and a separate power supply, low-power, 8-bit CMOS data acquisition devices. The PCF8591 has the ... A2 can be used in hardware address programmed 8 PCF8591 device allows access to the same I2C ... to VDD PCF8591 built-in track-and-hold circuit 8-bit successive approximation A / D converter 1 analog ... higher the voltage, the more obvious indicator brightness; 8 module PCB size: 3.6cm * 2.3cm 9 ...