AS6200 datasheet(9/35 Pages) AMSCO

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[v1-01] 2016-Jun-17

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AS6200 − Detailed Descriptions

Data Width, Bit D4

For AS6200 only the 12 bit mode is supported by the device,

which means that the DW should always be set to 0.

Alert, Bit D5

The alert bit can be used to easily compare the current

temperature reading to the thresholds that can be set in the

TLOW and THIGH registers.

If the polarity bit is set to 0, the AL bit is read as 1 until the

converted temperature value exceeds the defined value in the

high temperature threshold register THIGH for the number of

defined consecutive faults (bits CF). Such an event causes the

AL bit to toggle to 0 and the value is kept until the converted

temperature value falls below the defined value in the low

temperature threshold register TLOW for the number of defined

consecutive faults. If this condition is met, the AL bit is reset to 1.

The polarity bit (POL) defines the active state of the alert bit as

depicted in the following figure.

The alert bit has the same setting as the alert output as long as

the device is configured for the comparator mode.

Figure 13:

State Diagram of the Alert Bit

Conversion Rate, Bit D6-D7

The conversion rate bits define the number of executed

temperature conversions per time unit. Additional readouts of

the temperature register between conversion is possible but

not recommended because the value is changed only after a

conversion is finished.

Values of 125ms, 250ms, 1s and 4s per conversion can be

configured while the default rate is set to 250ms. This

corresponds to a value of 4 conversions per second.

AL = 1

AL = 0

T > THIGH

for N consecutive

cycles

T < TLOW

for N consecutive

cycles

POL = 0:

AL = 0

AL = 1

T > THIGH

for N consecutive

cycles

T < TLOW

for N consecutive

cycles

POL = 1:

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