Datasheet

ADC121C021, ADC121C021Q, ADC121C027

SNAS415F –JANUARY 2008–REVISED MARCH 2013

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MIN

-- Lowest Conversion Register

This register holds the Lowest Conversion result when in the automatic conversion mode. Each conversion result

is compared against the contents of this register. If the value is lower, it becomes the lowest conversion and

replaces the current value. If the value is higher, the register contents remain unchanged. The lowest conversion

value can be cleared at any time by writing 0FFFh to this register. The value of this register will update

automatically when the automatic conversion mode is enabled, but is NOT updated in the normal mode.

Pointer Address 06h (Read/Write)

Default Value: 0FFFh

D15 D14 D13 D12 D11 D10 D9 D8

Reserved Lowest Conversion [11:8]

D7 D6 D5 D4 D3 D2 D1 D0

Lowest Conversion [7:0]

Bits Name Description

15:12 Reserved Always reads zeros. Zeros must be written to these bits.

11:0 Lowest Conversion Lowest conversion result data. D11 is MSB.

MAX

-- Highest Conversion Register

This register holds the Highest Conversion result when in the Automatic mode. Each conversion result is

compared against the contents of this register. If the value is higher, it replaces the previous value. If the value is

lower, the register contents remain unchanged. The highest conversion value can be cleared at any time by

writing 0000h to this register. The value of this register will update automatically when the automatic conversion

mode is enabled, but is NOT updated in the normal mode.

Pointer Address 07h (Read/Write)

Default Value: 0000h

D15 D14 D13 D12 D11 D10 D9 D8

Reserved Highest Conversion [11:8]

D7 D6 D5 D4 D3 D2 D1 D0

Highest Conversion [7:0]

Bits Name Description

15:12 Reserved Always reads zeros. Zeros must be written to these bits.

11:0 Highest Conversion Highest conversion result data. D11 is MSB.

Product Folder Links: ADC121C021 ADC121C021Q ADC121C027