ADC081C021 datasheet(21/46 Pages) TI2

21 / 46 page

ADC121C021, ADC121C021Q, ADC121C027

www.ti.com

SNAS415F – JANUARY 2008 – REVISED MARCH 2013

VHIGH -- Alert Limit Register - Over Range

This register holds the upper limit threshold used to determine the alert condition. If the conversion moves higher

than this limit, a VHIGH alert is generated.

Pointer Address 04h (Read/Write)

Default Value: 0FFFh

D15

D14

D13

D12

D11

D10

Reserved

VHIGH Limit [11:8]

VHIGH Limit [7:0]

Bits

Name

Description

15:12

Reserved

Always reads zeros. Zeros must be written to these bits.

11:0

VHIGH Limit

Upper limit threshold. D11 is MSB.

VHYST -- Alert Hysteresis Register

This register holds the hysteresis value used to determine the alert condition. After a VHIGH or VLOW alert occurs,

the conversion result must move within the VHIGH or VLOW limit by more than this value to clear the alert

condition. Note: If the Alert Hold bit is set in the configuration register, alert conditions will not self-clear.

Pointer Address 05h (Read/Write)

Default Value: 0000h

D15

D14

D13

D12

D11

D10

Reserved

Hysteresis [11:8]

Hysteresis [7:0]

Bits

Name

Description

15:12

Reserved

Always reads zeros. Zeros must be written to these bits.

11:0

Hysteresis

Hysteresis value. D11 is MSB.

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Product Folder Links: ADC121C021 ADC121C021Q ADC121C027

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