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DS9101 Scheda tecnica(PDF) 39 Page - Maxim Integrated Products |
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DS9101 Scheda tecnica(HTML) 39 Page - Maxim Integrated Products |
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39 / 55 page ![]() Hygrochron Temperature/Humidity Logger iButton with 8KB Data-Log Memory ______________________________________________________________________________________ 39 DS1923 Tx PRESENCE PULSE BUS MASTER Tx RESET PULSE BUS MASTER Tx ROM FUNCTION COMMAND DS1923 Tx CRC BYTE DS1923 Tx FAMILY CODE (1 BYTE) DS1923 Tx SERIAL NUMBER (6 BYTES) OD = 0 RC = 0 MASTER Tx BIT 0 RC = 0 RC = 0 RC = 0 Y OD RESET PULSE? Y Y Y Y Y Y N 33h READ ROM COMMAND? N 55h MATCH ROM COMMAND? BIT 0 MATCH? BIT 0 MATCH? N N N N N N N F0h SEARCH ROM COMMAND? N ECh CONDITIONAL SEARCH COMMAND? N Y RC = 1 MASTER Tx BIT 1 MASTER Tx BIT 63 BIT 1 MATCH? BIT 63 MATCH? Y Y RC = 1 FROM MEMORY/CONTROL FUNCTION FLOWCHART (FIGURE 9) DS1923 Tx BIT 0 DS1923 Tx BIT 0 MASTER Tx BIT 0 BIT 1 MATCH? BIT 63 MATCH? DS1923 Tx BIT 1 DS1923 Tx BIT 1 MASTER Tx BIT 1 DS1923 Tx BIT 63 DS1923 Tx BIT 63 MASTER Tx BIT 63 Y BIT 0 MATCH? N N N Y Y RC = 1 DS1923 Tx BIT 0 DS1923 Tx BIT 0 MASTER Tx BIT 0 CONDITION MET? N Y BIT 1 MATCH? BIT 63 MATCH? DS1923 Tx BIT 1 DS1923 Tx BIT 1 MASTER Tx BIT 1 DS1923 Tx BIT 63 DS1923 Tx BIT 63 MASTER Tx BIT 63 Y FROM FIGURE 11b TO FIGURE 11b TO FIGURE 11b FROM FIGURE 11b TO MEMORY/CONTROL FUNCTION FLOWCHART (FIGURE 9) Figure 11a. ROM Functions Flowchart |
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