MC68HC908GR8CDW Freescale Semiconductor, MC68HC908GR8CDW Datasheet - Page 88

• Manufacturer Part Number: MC68HC908GR8CDW
• Description: IC MCU 8K FLASH 8MHZ 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GR8CDW

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 17
• 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 ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Analog-to-Digital Converter (ADC)
5.8.3 ADC Clock Register
Technical Data
88
Address: $0003E
The ADC clock register (ADCLK) selects the clock frequency for the
ADC.
ADIV2–ADIV0 — ADC Clock Prescaler Bits
ADICLK — ADC Input Clock Select Bit
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
ADIV2–ADIV0 form a 3-bit field which selects the divide ratio used by
the ADC to generate the internal ADC clock.
available clock configurations. The ADC clock should be set to
approximately 1 MHz.
ADICLK selects either the bus clock or CGMXCLK as the input clock
source to generate the internal ADC clock. Reset selects CGMXCLK
as the ADC clock source.
For More Information On This Product,
ADIV2
Bit 7
Analog-to-Digital Converter (ADC)
X = don’t care
0
ADIV2
Go to: www.freescale.com
Figure 5-4. ADC Clock Register (ADCLK)
0
0
0
0
1
= Unimplemented
ADIV1
Table 5-2. ADC Clock Divide Ratio
6
0
ADIV1
0
0
1
1
X
ADIV0
5
0
ADIV0
ADICLK
X
0
1
0
1
4
0
ADC input clock
ADC input clock
ADC input clock
ADC input clock
ADC input clock
3
0
0
ADC Clock Rate
MC68HC908GR8 — Rev 4.0
Table 5-2
2
0
0
1
2
4
8
16
shows the
1
0
0
MOTOROLA
Bit 0
0
0