MC56F8122VFAE Freescale Semiconductor, MC56F8122VFAE Datasheet - Page 29

• Manufacturer Part Number: MC56F8122VFAE
• Description: IC DSP 16BIT 40MHZ 48-LQFP
• Manufacturer: Freescale Semiconductor
• Series: 56F8xxxr

Specifications of MC56F8122VFAE

• Core Processor: 56800
• Core Size: 16-Bit
• Speed: 40MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 21
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Ram Size: 4K x 16
• Voltage - Supply (vcc/vdd): 2.25 V ~ 3.6 V
• Data Converters: A/D 6x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 48-LQFP
• Data Bus Width: 16 bit
• Processor Series: MC56F81xx
• Core: 56800E
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 21
• Data Ram Size: 8 KB
• Operating Supply Voltage: - 0.3 V to + 4 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Data Rom Size: 8 KB
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

3.2.2
It is also possible to drive the internal oscillator with a ceramic resonator, assuming the overall system
design can tolerate the reduced signal integrity. A typical ceramic resonator circuit is shown in
Refer to the supplier’s recommendations when selecting a ceramic resonator and associated components.
The resonator and components should be mounted as near as possible to the EXTAL and XTAL pins.
Note:
3.2.3
The recommended method of connecting an external clock is illustrated in
source is connected to XTAL and the EXTAL pin is grounded.
Freescale Semiconductor
Preliminary
2 Terminal
CL1
Ceramic Resonator (Default)
The OCCS_COHL bit must be set to 0 when a crystal resonator is used. The reset condition on the
OCCS_COHL bit is 0. Please see the COHL bit in the Oscillator Control (OSCTL) register, discussed
in the 56F8300 Peripheral User Manual.
External Clock Source
EXTAL XTAL
R
z
Figure 3-3 Connecting an External Clock Register
CL2
Figure 3-2 Connecting a Ceramic Resonator
Resonator Frequency = 4 - 8MHz (optimized for 8MHz)
External
XTAL
Clock
C1
3 Terminal
EXTAL XTAL
56F8322 Technical Data, Rev. 16
or GPIO
EXTAL
R
V
z
SS
C2
Note: when using an external clocking
source with this configuration, the
CLKMODE and COHL bits
of the OSCTL register should be set to 1.
Sample External Ceramic Resonator Parameters:
R
z
= 750 KΩ
CLKMODE = 0
Figure
3-3. The external clock
External Clock Operation
Figure
3-2.
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