MIC3003GML datasheet(64/75 Pages) MICREL

64 / 75 page

Micrel, Inc.

MIC3003

November 2009

M9999-111209-C

hbwhelp@micrel.com or (408) 955-1690

OEM Calibration 1 (OEMCAL1)

D[7]

reserved

read-only

D[6]

ADSTP

read/write

D[5]

ADIDL

read-only

D[4]

ONESHOT

read/write

D[3]

ADSPIN

read/write

D[2]

SPIN[2]

read/write

D[1]

SPIN[1]

read/write

D[0]

SPIN[0]

read/write

Default value

0000 0000b = 00h

Serial address

A6h

Byte address

17 = 11h

A valid OEM password is required for access to this register. This register is volatile and will not keep its value through power

cycles.

Bit

Function

Operation

D[7]

Reserved

Always write as zero; reads undefined.

D[6]

ADSTP

Stop ADC: Halts the analog to digital

converter

0 = ADC in normal operation

1 = ADC stopped

When ADSTP is set, the five-channel ADC halts and no

new ADC results are computed. Existing result registers

are not changed.

In addition, no new temperature compensation is applied

to the APC loop and fault parameters, and no

comparisons of the ADC results against the alarm and

warning limits is performed.

D[5]

ADIDL

ADC idle flag

0 = ADC is busy

1 = ADC is idle

ADIDL may be used in conjunction with ONESHOT to

determine when the single ADC conversion is complete.

After ONESHOT is set, the ADC runs until completion

and then halts. Software may poll ADIDL to detect this

completion before interrofating the result.

D[4]

ONESHOT

Triggers one-shot A/D conversion cycle

0 = Normal ADC operation

1 = ADC one-shot mode

Setting ONESHOT high starts the ADC and causes it to

stop after the next conversion is complete. After the

conversion, the ADC remains stopped until ONESHOT is

set low.

Multiple single ADC conversions may be executed by

repeatedly writing one to ONESHOT.

D[3]

ADSPIN

Selects ADC spin-on-channel mode; do

not enable ADC and FC spin-on-channel

modes simultaneously

0 = Normal ADC operation

1 = ADC spin-on-channel

D[2:0]

SPIN[2:0]

ADC and Fault Comparator (FC) channel

select for spin-on-channel mode; do not

enable ADC and FC spin-on-channel

modes simultaneously

ADC:

000 = temperature

001 = voltage

010 = VILD

011 = VMPD

100 = VRX

MIC3003GML 데이터시트(PDF) 64 Page - Micrel Semiconductor

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