MC912DG128ACPV Freescale Semiconductor, MC912DG128ACPV Datasheet - Page 159

• Manufacturer Part Number: MC912DG128ACPV
• Description: IC MCU 128K FLASH 8MHZ 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC912DG128ACPV

• Core Processor: CPU12
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: CAN, I²C, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 16x8/10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 112-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

12.4 Phase-Locked Loop (PLL)
MC68HC912DT128A — Rev 4.0
MOTOROLA
INT ECLK
CANCLK
T1CLK
T2CLK
T3CLK
T4CLK
PCLK
XCLK
NOTE:
The phase-locked loop (PLL) of the MC68HC912DT128A is designed for
robust operation in an Automotive environment. The allowed PLL crystal
or ceramic resonator reference of 0.5 to 8MHz is selected for the wide
availability of components with good stability over the automotive
temperature range. Please refer to
Chains
When selecting a crystal, it is recommended to use one with the lowest
possible frequency in order to minimise EMC emissions.
An oscillator design with reduced power consumption allows for slow
wait operation with a typical power supply current less than a milli-
ampere. The PLL circuitry can be bypassed when the VDDPLL supply is
at VSS level. In this case, the PLL module is powered down and the
oscillator output transistor has a stronger transconductance for improved
drive of higher frequency resonators (as the crystal frequency needs to
be twice the maximum bus frequency). Refer to
Signal
Figure 12-1. Internal Clock Relationships
Freescale Semiconductor, Inc.
For More Information On This Product,
Descriptions.
for an overview of system clocks.
Go to: www.freescale.com
Clock Functions
Figure 12-6
Figure 3-4
in section
Phase-Locked Loop (PLL)
Clock Divider
Clock Functions
in
Technical Data
Pinout and
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