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PCF8591P 数据表(PDF) 8 Page - NXP Semiconductors |
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PCF8591P 数据表(HTML) 8 Page - NXP Semiconductors |
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8 / 28 page ![]() 2003 Jan 27 8 Philips Semiconductors Product specification 8-bit A/D and D/A converter PCF8591 handbook, full pagewidth D7 msb lsb D6 D5 D4 D3 D2 D1 D0 VAOUT VDD VREF 00 VAGND VSS 01 02 03 04 FE FF HEX code DAC data register VAOUT = VAGND + Di × 2i VREF - VAGND 256 MBL827 ∑ 7 i = 0 Fig.7 DAC data and DC conversion characteristics. handbook, full pagewidth MBL828 S 0 A A A A ADDRESS DATA BYTE 1 DATA BYTE 2 CONTROL BYTE 12 9 81 91 91 high impedance state or previous value held in DAC register previous value held in DAC register value of data byte 1 PROTOCOL SCL SDA VAOUT time Fig.8 D/A conversion sequence. |
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