mc9s08ac16 Freescale Semiconductor, Inc, mc9s08ac16 Datasheet - Page 252

• Manufacturer Part Number: mc9s08ac16
• Description: Hcs08 Microcontrollers 8-bit Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 14 Analog-to-Digital Converter (S08ADC10V1)
14.2.3
The ADC1 module includes a temperature sensor whose output is connected to one of the ADC analog
channel inputs.
where:
For temperature calculations, use the V
In application code, the user reads the temperature sensor channel, calculates V
V
less than V
For more information on using the temperature sensor, consult AN3031.
252
TEMP25
— V
— V
— m is the hot or cold voltage versus temperature slope in V/°C.
. If V
TEMP25
Temperature Sensor
TEMP
TEMP25
TEMP
Equation 14-1
is the voltage of the temperature sensor channel at the ambient temperature.
the hot slope value is applied in
is greater than V
is the voltage of the temperature sensor channel at 25°C.
provides an approximate transfer function of the temperature sensor.
Temp = 25 - ((V
MC9S08AC16 Series Data Sheet, Rev. 0
TEMP25
TEMP25
the cold slope value is applied in
TEMP
PRELIMINARY
and m values from the ADC Electricals table.
-V
Equation
TEMP25
) ÷ m)
14-1.
Equation
TEMP
Freescale Semiconductor
, and compares to
14-1. If V
Eqn. 14-1
TEMP
is