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ZSC31015EAG1-R 数据表(PDF) 28 Page - Renesas Technology Corp |
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ZSC31015EAG1-R 数据表(HTML) 28 Page - Renesas Technology Corp |
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28 / 53 page  © 2016 Integrated Device Technology, Inc 28 November 14, 2016 ZSC31015 Datasheet 20 DATA Byte Packet (Read EEPROM) P 7 6 5 4 3 2 1 0 P S 3 Stop S P S 7 6 5 4 3 2 1 0 7 6 5 4 5 4 3 2 1 0 ... EEPROM Byte 19 EEPROM Byte 18 EEPROM Byte 2 EEPROM Byte 1 Stop S P 1 0 1 0 0 1 0 1 Data Byte A5H Stop Figure 3.7 Read EEPROM Contents There is a variable idle time between packets. This idle time varies with the update rate setting in EEPROM. Figure 3.8 Transmission of a Number of Data Packets The table below shows the idle time between packets versus the update rate. This idle time can vary by nominal +/-15% between parts and over a temperature range of -50 to 150ºC. Table 3.2 Special Measurement/Idle Time between Packets versus Update Rate Update Rate Setting Idle Time between Packets Special Measurement 00 1ms Every 128 bridge measurements 01 4.85ms Every 64 bridge measurements 10 22.5ms Every 16 bridge measurements 11 118ms Every 8 bridge measurements Transmissions from the IC occur at one of two speeds depending on the update rate programmed in EEPROM. If the user chooses one of the two fastest update rates (1 ms or 5 ms) then the baud rate of the digital transmission will be 32 kHz (minimum 26kHz). If, however, the user chooses one of the two slower update rates (25 ms or 125 ms), then the baud rate of the digital transmission will be 8 kHz (maximum 9.6kHz). The total transmission time for both digital output configurations is shown in Table 3.3. S P PStop S P S P S IDLE Time 0 0 5 4 3 2 1 0 7 6 5 4 3 2 1 0 0 0 5 4 3 2 1 0 7 6 5 4 3 2 1 0 0 0 5 4 IDLE Time IDLE Time 1 0 P S 2 Packet Transmission (This example shows 2 DATA packets) Stop |
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