MCHC908GR8AVFAE Freescale Semiconductor, MCHC908GR8AVFAE Datasheet - Page 49

• Manufacturer Part Number: MCHC908GR8AVFAE
• Description: IC MCU 8K FLASH 8MHZ 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MCHC908GR8AVFAE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 21
• Program Memory Size: 7.5KB (7.5K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

3.3.2 Voltage Conversion
When the input voltage to the ADC equals V
input voltage equals V
straight-line linear conversion.
Freescale Semiconductor
INTERNAL DATA BUS
The ADC input voltage must always be greater than V
V
Connect the V
connect the V
V
AIEN
DDA
DDA
INTERRUPT
LOGIC
. V
pin should be routed carefully for maximum noise immunity.
COCO
READ DDRBx
WRITE DDRBx
WRITE PTBx
READ PTBx
REFL
REFH
CONVERSION
,
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
BUS CLOCK
COMPLETE
the ADC converts it to $00. Input voltages between V
RESET
CGMXCLK
must always be greater than or equal to V
SSA
DDA
pin to the same voltage potential as the V
pin to the same voltage potential as the V
ADIV2–ADIV0
Figure 3-2. ADC Block Diagram
ADC DATA REGISTER
GENERATOR
DDRBx
REFH
PTBx
CLOCK
ADC
ADC CLOCK
NOTE
NOTE
, the ADC converts the signal to $FF (full scale). If the
ADICLK
VOLTAGE IN
(V
ADC
ADIN
V
V
REFH
REFL
DISABLE
)
DISABLE
SSA
CHANNEL
REFL
SELECT
and less than
SS
ADC CHANNEL x
.
DD
PTBx
pin. The
pin, and
ADCH4–ADCH0
REFH
Functional Description
and V
REFL
are a
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