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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MCP4716 датащи(PDF) 57 Page - Microchip Technology |
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MCP4716 датащи(HTML) 57 Page - Microchip Technology |
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57 / 86 page  © 2011 Microchip Technology Inc. DS22272A-page 57 MCP4706/4716/4726 6.6.2 GENERAL CALL WAKE-UP If the second byte is “00001001” (09h), the device forces the volatile power-down bits to ‘00’. The nonvolatile (EEPROM) power-down bit values are not affected by this command. This command allows multiple MCP47X6 devices to wake-up synchronously. FIGURE 6-8: General Call Wake-Up Command. Note: This command does not adhere to the I2C specification where if the LSb of the 2nd byte is a ‘1’, it is a ‘Hardware General Call’ (see the NXP I2C Specification). General Call Address Note 1: At the falling edge of the SCL, at the end of this ACK pulse, the volatile PD1:PD0 bits are forced to ‘00’. Note 1 2: The 2nd byte can be repeated after the 2nd by continued clocking before issuing Stop bit. General Call Wake-Up 3: ACK bit generated by MCP47X6. Note 2 SDA SCL 00 0 0 0 00 00 00 0 Start bit ACK bit (3) Read/Write bit (Write) Stop bit S A R/W A ACK bit (3) 0 P 01 0 0 1 Command |
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