ZAMC4100GA2R datasheet(85/156 Pages) RENESAS

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ZAMC4100 Datasheet

January 26, 2016

External temperature measurement

For a basic understanding of external temperature measurement for the diode-based sensor, the equation below

provides a temperature measurement result (unsigned) within RESCODE (other additional factors apply in final

applications; contact IDT for more details using the contact information on page 155):

[V]

T[K]

RESCODE

[V]

)

(

T[K]

RESCODE

REF

∗

1538

Where: q = elementary charge (1.60217646 x 10

-19)

k = Boltzmann constant (1.3806503 x 10

-23)

Internal temperature measurement

The formula for temperature calculation in correspondence with the conversion unsigned result is

(

)

512

3072

⎟

⎠

⎞

⎜

⎝

⎛

∗

−

⎟

⎠

⎞

⎜

⎝

⎛

∗

[mV/

[V]

RESCODE

[mV/

[V]

REF

Where the parameter SVT is the voltage/temperature slope of the internal temperature sensor and Vt27 is the

output voltage at 27°C (both specified in Table 1.11).

3.12.5. ADC Configuration and ADC Status Register

ZAMC4100 ADC configurations define the conversion rate, result format (sign and justification) and continuous

conversion mode in the ADCCONF register. The mapping of bits in this register is described in Table 3.37 and the

purpose of the bits is described in the following sections.

The interrupt flags of the ADC module are allocated in the ADCSTAT register described in Table 3.39.

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