Details

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BUY MC68302FC20C https://www.utsource.net/itm/p/886922.html
Communications Controller

Parameter	Description	Min	Typ	Max	Unit
Supply Voltage (Vcc)	Operating voltage range	4.75	-	5.25	V
Operating Temperature	Range for industrial grade	-40	-	85	°C
Clock Frequency	Maximum clock frequency	-	33	-	MHz
I/O Voltage	Input/output voltage range	4.75	-	5.25	V
Power Consumption	Typical power consumption at 33 MHz	-	2.5	-	W
Data Bus Width	Width of the data bus	-	16	-	bits
Address Bus Width	Width of the address bus	-	24	-	bits
Internal RAM	Size of internal RAM	-	256	-	KB
External Memory Interface	Supports external memory access	-	-	-	-
UARTs	Number of Universal Asynchronous Receiver-Transmitters	-	2	-	-
Timers	Number of timers	-	4	-	-
DMA Channels	Number of Direct Memory Access channels	-	4	-	-
Interrupt Sources	Number of interrupt sources	-	64	-	-
Package Type	Type of package	-	FC20C	-	-

Instructions for Using the MC68302FC20C

1. Power Supply:

   • Ensure that the supply voltage (Vcc) is within the specified range of 4.75V to 5.25V.
   • Use a stable power supply to avoid voltage fluctuations that could affect performance.

2. Clock Configuration:

   • Set the clock frequency to a maximum of 33 MHz for optimal performance.
   • Use a high-quality crystal or oscillator to generate a stable clock signal.

3. Temperature Considerations:

   • Operate the device within the temperature range of -40°C to 85°C to ensure reliable operation.
   • Avoid exposing the device to extreme temperatures outside this range.

4. I/O Connections:

   • Connect all I/O pins to the appropriate voltages (4.75V to 5.25V) to ensure proper communication.
   • Use pull-up or pull-down resistors as necessary to prevent floating inputs.

5. Memory Configuration:

   • Configure the external memory interface to access external memory if required.
   • Ensure that the data bus width is set to 16 bits and the address bus width is set to 24 bits.

6. UART Configuration:

   • Initialize the UARTs for serial communication by setting the baud rate, data format, and other parameters.
   • Use the UARTs to communicate with external devices such as modems or other microcontrollers.

7. Timer Setup:

   • Configure the timers for various timing and counting tasks.
   • Set the timer modes (e.g., one-shot, periodic) and prescalers as needed.

8. DMA Configuration:

   • Set up the DMA channels to transfer data between memory and peripherals without CPU intervention.
   • Configure the DMA channels for burst transfers or single-byte transfers as required.

9. Interrupt Handling:

   • Enable and configure the interrupt sources to handle events such as timer overflows, UART data reception, and external interrupts.
   • Write interrupt service routines (ISRs) to process these events efficiently.

10. Package Handling:

    • Handle the FC20C package with care to avoid damage to the pins and the chip.
    • Follow proper soldering techniques and use appropriate tools to mount the device on the PCB.

By following these instructions, you can ensure the proper operation and longevity of the MC68302FC20C microcontroller.

(For reference only)