MC9S08DN32AVLF Freescale Semiconductor, MC9S08DN32AVLF Datasheet - Page 169
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MC9S08DN32AVLF
Manufacturer Part Number
MC9S08DN32AVLF
Description
MCU 8BIT 32K FLASH 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HCS08r
Specifications of MC9S08DN32AVLF
Core Processor
HCS08
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, LIN, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
39
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 16x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 105°C
Package / Case
48-LQFP
Processor Series
S08DN
Core
HCS08
Data Bus Width
8 bit
Mounting Style
SMD/SMT
3rd Party Development Tools
EWS08
Development Tools By Supplier
DEMO9S08DZ60
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC9S08DN32AVLF
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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10.1.5
To use the on-chip temperature sensor, the user must perform the following:
Equation 10-1
where:
For temperature calculations, use the V
In application code, the user reads the temperature sensor channel, calculates V
V
less than V
calibrate the bandgap voltage reference and temperature sensor.
Calibrating at 25°C will improve accuracy to
Calibration at three points, -40°C, 25°C, and 125°C will improve accuracy to ± 2.5°C. Once calibration
has been completed, the user will need to calculate the slope for both hot and cold. In application code, the
user would then calculate the temperature using
temperature is above or below 25°C. Once determined if the temperature is above or below 25°C, the user
can recalculate the temperature using the hot or cold slope value obtained during calibration.
Freescale Semiconductor
TEMP25
•
•
•
Configure ADC for long sample with a maximum of 1 MHz clock
Convert the bandgap voltage reference channel (AD27)
— By converting the digital value of the bandgap voltage reference channel using the value of
Convert the temperature sensor channel (AD26)
— By using the calculated value of V
— V
— V
— m is the hot or cold voltage versus temperature slope in V/°C.
. If V
TEMP25
V
Characteristics”.
Temperature Sensor
BG
TEMP
TEMP25
TEMP
provides an approximate transfer function of the temperature sensor.
the user can determine V
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.
Temp = 25 - ((V
MC9S08DN60 Series Data Sheet, Rev 3
TEMP25
TEMP25
DD
. For value of bandgap voltage, see
the cold slope value is applied in
±
TEMP
DD
4.5°C.
and m values from the ADC Electricals table.
Equation 10-1
, convert the digital value of AD26 into a voltage,
-V
Equation
TEMP25
) ÷ m)
10-1. To improve accuracy the user should
Chapter 10 Analog-to-Digital Converter (S08ADC12V1)
as detailed above and then determine if the
Equation
TEMP
Section A.6, “DC
, and compares to
10-1. If V
Eqn. 10-1
TEMP
V
TEMP
169
is
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