MC56F8322VFAE Freescale Semiconductor, MC56F8322VFAE Datasheet - Page 28

• Manufacturer Part Number: MC56F8322VFAE
• Description: IC DSP 16BIT 60MHZ 48-LQFP
• Manufacturer: Freescale Semiconductor
• Series: 56F8xxxr

Specifications of MC56F8322VFAE

• Core Processor: 56800
• Core Size: 16-Bit
• Speed: 60MHz
• Connectivity: CAN, SCI, SPI
• Peripherals: POR, PWM, Temp Sensor, WDT
• Number Of I /o: 21
• Program Memory Size: 40KB (20K x 16)
• Program Memory Type: FLASH
• Ram Size: 6K 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: MC56F83xx
• Core: 56800E
• Numeric And Arithmetic Format: Fixed-Point
• Device Million Instructions Per Second: 40 MIPs
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 21
• Data Ram Size: 4 KB
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Interface Type: SCI, SPI, CAN
• Minimum Operating Temperature: - 40 C
• For Use With: MC56F8323EVME - BOARD EVALUATION MC56F8323
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Part 3 On-Chip Clock Synthesis (OCCS)
3.1 Introduction
Refer to the OCCS chapter of the 56F8300 Peripheral User Manual for a full description of the OCCS.
The material contained here identifies the specific features of the OCCS design.
3.2 External Clock Operation
The system clock can be derived from an external crystal, ceramic resonator or an external system clock
signal. To generate a reference frequency using the internal oscillator, a reference crystal or ceramic
resonator must be connected between the EXTAL and XTAL pins.
3.2.1
The internal oscillator is designed to interface with a parallel-resonant crystal resonator in the frequency
range specified for the external crystal in
in
parameters determine the component values required to provide maximum stability and reliable start-up.
The crystal and associated components should be mounted as near as possible to the EXTAL and XTAL
pins to minimize output distortion and start-up stabilization time.
Note:
28
Figure
CLKMODE = 0
3-1. Follow the crystal supplier’s recommendations when selecting a crystal, since crystal
Crystal Oscillator
The OCCS_COHL bit should be set to 1 when a crystal oscillator 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.
CL1
EXTAL XTAL
R
Figure 3-1 Connecting to a Crystal Oscillator
z
Crystal Frequency = 4 - 8MHz (optimized for 8MHz)
CL2
EXTAL XTAL
56F8322 Techncial Data, Rev. 16
Table
R
z
10-15. A recommended crystal oscillator circuit is shown
Sample External Crystal Parameters:
R
Note: If the operating temperature range is limited to
below 85
z
= 750 KΩ
o
C (105
o
C junction), then R
Freescale Semiconductor
z
= 10 Meg Ω
Preliminary