MC68HC908GR4CFA Freescale Semiconductor, MC68HC908GR4CFA Datasheet - Page 81

• Manufacturer Part Number: MC68HC908GR4CFA
• Description: IC MCU 4K FLASH 8.2MHZ 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GR4CFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 21
• Program Memory Size: 4KB (4K 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 ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

5.4.1 ADC Port I/O Pins
MC68HC908GR8 — Rev 4.0
MOTOROLA
PTB5/ATD5–PTB0/ATD0 are general-purpose I/O (input/output) pins
that share with the ADC channels. The channel select bits define which
ADC channel/port pin will be used as the input signal. The ADC
overrides the port I/O logic by forcing that pin as input to the ADC. The
remaining ADC channels/port pins are controlled by the port I/O logic
and can be used as general-purpose I/O. Writes to the port register or
DDR will not have any affect on the port pin that is selected by the ADC.
Read of a port pin in use by the ADC will return a logic 0.
DATA BUS
INTERNAL
AIEN
INTERRUPT
Freescale Semiconductor, Inc.
LOGIC
For More Information On This Product,
READ DDRBx
WRITE DDRBx
WRITE PTBx
READ PTBx
COCO
Analog-to-Digital Converter (ADC)
BUS CLOCK
CONVERSION
COMPLETE
CGMXCLK
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RESET
Figure 5-1. ADC Block Diagram
ADIV2–ADIV0
ADC DATA REGISTER
GENERATOR
DDRBx
PTBx
CLOCK
ADC
ADC CLOCK
ADICLK
VOLTAGE IN
(V
Analog-to-Digital Converter (ADC)
ADC
ADIN
DISABLE
)
DISABLE
CHANNEL
SELECT
Functional Description
ADC CHANNEL x
PTBx
Technical Data
ADCH4–ADCH0
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