MC9S08QG8CDNER Freescale Semiconductor, MC9S08QG8CDNER Datasheet - Page 120

• Manufacturer Part Number: MC9S08QG8CDNER
• Description: IC MCU 8K FLASH 8-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HCS08r

Specifications of MC9S08QG8CDNER

• Core Processor: HCS08
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 4
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (3.9mm Width)
• For Use With: DEMO9S08QG8E - BOARD DEMO FOR MC9S08QG8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: MC9S08QG8CDNERTR

Chapter 9 Analog-to-Digital Converter (S08ADC10V1)
9.1.1.3
The ADC is capable of performing conversions using the MCU bus clock, the bus clock divided by two,
or the local asynchronous clock (ADACK) within the module. The alternate clock, ALTCLK, input for the
MC9S08QG8/4 MCU devices is not implemented.
9.1.1.4
The ADC hardware trigger, ADHWT, is output from the real-time interrupt (RTI) counter. The RTI counter
can be clocked by either ICSERCLK or a nominal 1-kHz clock source within the RTI block.
The period of the RTI is determined by the input clock frequency and the RTIS bits. The RTI counter is a
free running counter that generates an overflow at the RTI rate determined by the RTIS bits. When the
ADC hardware trigger is enabled, a conversion is initiated upon an RTI counter overflow.
The RTI can be configured to cause a hardware trigger in MCU run, wait, and stop3.
9.1.1.5
The ADC on MC9S08QG8 devices contains only one analog pin enable register, APCTL1.
9.1.1.6
The ADC 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
In application code, the user reads the temperature sensor channel, calculates V
V
less than V
9.1.1.7
The ADC is capable of running in stop3 mode but requires LVDSE and LVDE in SPMSC1 to be set.
118
TEMP25
Appendix A, “Electrical
— V
— V
— m is the hot or cold voltage versus temperature slope in V/°C.
. If V
TEMP25
TEMP
TEMP25
Alternate Clock
Hardware Trigger
Analog Pin Enables
Temperature Sensor
Low-Power Mode Operation
TEMP
Equation 9-1
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.
Characteristics.”
provides an approximate transfer function of the temperature sensor.
MC9S08QG8 and MC9S08QG4 Data Sheet, Rev. 5
Temp = 25 - ((V
TEMP25
TEMP25
, the cold slope value is applied in
TEMP
and m values from
-V
Equation
TEMP25
) ÷ m)
9-1.
Section A.10, “ADC
Equation
TEMP
Freescale Semiconductor
, and compares to
Characteristics,”
9-1. If V
Eqn. 9-1
TEMP
is