ADS1283IRHFR.B datasheet(45/67 Pages) TI2

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DIN

SCLK

0000001X

(STANDBY)

Operating

StandbyMode

Operating

0000000X

(WAKEUP)

ADS1283

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SBAS565C – JANUARY 2014 – REVISED AUGUST 2019

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8.5.1.2 WAKEUP: Wake-Up From Standby Mode

The WAKEUP command is used to exit the standby mode. After sending this command, the time for the first data

to be ready is illustrated in Figure 48 and Table 16. Sending this command during normal operation has no

effect; for example, reading data by the read-data-continuous mode with DIN held low.

8.5.1.3 STANDBY: Standby Mode

The STANDBY command places the ADS1283 into standby mode. In standby, the device enters a reduced

power state where a low quiescent current remains to keep the register settings and serial interface active. The

ADC remains in standby mode until CS is taken high or the WAKEUP command is sent. For complete device

shutdown, take the PWDN pin low (register settings are not saved). The operation of standby mode is shown in

Figure 59.

Figure 59. STANDBY Command Sequence

8.5.1.4 SYNC: Synchronize the Analog-to-Digital Conversion

The SYNC command synchronizes the analog-to-digital conversion. Upon receiving the command, the reading in

progress is cancelled and the conversion process is restarted. In order to synchronize multiple ADS1283s, the

command must be sent simultaneously to all devices. The SYNC pin must be held high during this command.

8.5.1.5 RESET: Reset the Device

The RESET command resets the registers to default values, enables read-data-continuous mode, and restarts

the conversion process. The RESET command is functionally equivalent to taking the RESET pin low. See

Figure 47 for the RESET command timing.

8.5.1.6 RDATAC: Read Data Continuous

The RDATAC command enables read-data-continuous mode (default mode). In this mode, conversion data is

read from the device directly without the need to supply a data read command. Each time DRDY falls low, new

data are available to read. See the Read-Data-Continuous Mode section for more details.

8.5.1.7 SDATAC: Stop Read Data Continuous

The SDATAC command stops read-data-continuous mode. Exit read-data-continuous mode before sending

continues conversions. Take CS high to cancel SDATAC mode.

ADS1283IRHFR.B Datasheet(PDF) 45 Page - Texas Instruments