MC68HC908GR8CDW Freescale Semiconductor, MC68HC908GR8CDW Datasheet - Page 112

• 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: -

Clock Generator Module (CGMC)
7.5 I/O Signals
7.5.1 Crystal Amplifier Input Pin (OSC1)
7.5.2 Crystal Amplifier Output Pin (OSC2)
7.5.3 External Filter Capacitor Pin (CGMXFC)
7.5.4 PLL Analog Power Pin (V
7.5.5 PLL Analog Ground Pin (V
Technical Data
112
NOTE:
NOTE:
NOTE:
The following paragraphs describe the CGMC I/O signals.
The OSC1 pin is an input to the crystal oscillator amplifier.
The OSC2 pin is the output of the crystal oscillator inverting amplifier.
The CGMXFC pin is required by the loop filter to filter out phase
corrections. An external filter network is connected to this pin. (See
Figure
To prevent noise problems, the filter network should be placed as close
to the CGMXFC pin as possible, with minimum routing distances and no
routing of other signals across the network.
V
V
Route V
capacitors as close as possible to the package.
V
the V
Route V
capacitors as close as possible to the package.
DDA
DDA
SSA
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SSA
is a ground pin used by the analog portions of the PLL. Connect
is a power pin used by the analog portions of the PLL. Connect the
pin to the same voltage potential as the V
7-2.)
DDA
SSA
pin to the same voltage potential as the V
DDA
Clock Generator Module (CGMC)
SSA
carefully for maximum noise immunity and place bypass
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carefully for maximum noise immunity and place bypass
)
)
MC68HC908GR8 — Rev 4.0
DD
pin.
SS
pin.
MOTOROLA