COMBOSMARTMETER datasheet(52/60 Pages) TI1

52 / 60 page

Analog or Digital

Set CLKSEL Pin = 1,

Wait for Internal

Oscillator to Start Up

Set PWDN = 1

Set RESET = 1

Wait for 1 s

Issue Reset Pulse,

Wait for 18 tCLKs

Set START = 1

Write Certain

Registers,

Including Input

Set PDB_REFBUF = 1

and Wait for Internal

Reference

Send SDATAC

Command

Set CLKSEL Pin = 0

and Provide External Clock

f = 2.048 MHz

External

Reference

External

RDATAC

Capture Data

and Test Signal

Set Test Signals

Capture Data

and Check Noise

// Follow Power-Up Sequencing

// If START is tied high, after this step

// DRDY toggles at fCLK / 64

// Delay for Power-On Reset and Oscillator Start-Up

// Activate DUT

// CS can be Either Tied Permanently Low

// Or Selectively Pulled Low Before Sending

// Commands or Reading and Sending Data from or to the Device

// Device Wakes Up in RDATAC Mode, so Send

// SDATAC Command so Registers can be Written

SDATAC

// If Using Internal Reference, Send This Command

WREG CONFIG3 C0h

// Set Device for DR = fMOD / 32

WREG CONFIG1 91h

WREG CONFIG2 E0h

// Set All Channels to Input Short

WREG CHnSET 01h

// Activate Conversion

// After This Point DRDY Should Toggle at

// fCLK / 64

// Put the Device Back in RDATAC Mode

RDATAC

// Look for DRDY and Issue 24 + n u 24 SCLKs

// Activate a (1 mV / 2.4 V) Square-Wave Test Signal

// On All Channels

SDATAC

WREG CONFIG2 F0h

WREG CHnSET

05h

RDATAC

YES

// Look for DRDY and Issue 24 + n u 24 SCLKs

ADS131E04

ADS131E06

ADS131E08

SBAS561A – JUNE 2012 – REVISED APRIL 2013

www.ti.com

Figure 50. Initial Flow at Power-Up

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Product Folder Links: ADS131E04 ADS131E06 ADS131E08

COMBOSMARTMETER Datasheet(PDF) 52 Page - Texas Instruments

COMBOSMARTMETER Datasheet(HTML) 52 Page - Texas Instruments

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