Details

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BUY TN80C51FA-2 https://www.utsource.net/itm/p/553778.html
8-Bit Microcontroller

Parameter	Description	Value
Device Type	Microcontroller	TN80C51FA-2
Core	80C51
Clock Frequency	Maximum operating frequency	33 MHz
Flash Memory	Program memory size	64 KB
RAM	Internal RAM size	256 Bytes
EEPROM	EEPROM size	Not Available
I/O Ports	Number of I/O lines	32
Timers/Counters	Number of timers/counters	3
Serial Communication	UART interfaces	1
Watchdog Timer	Watchdog timer available	Yes
Power Supply Voltage	Operating voltage range	2.7 V to 5.5 V
Operating Temperature	Temperature range	-40掳C to +85掳C
Package Type	Package style	TQFP-44

Instructions for Use:

1. Power Supply:

   • Ensure the power supply voltage is within the specified range (2.7 V to 5.5 V).
   • Connect a bypass capacitor close to the power pins to reduce noise.

2. Clock Configuration:

   • Configure the external or internal oscillator as per the application requirements.
   • For external crystal, ensure it matches the supported frequency range up to 33 MHz.

3. Programming:

   • Use an appropriate programmer compatible with the 80C51 architecture.
   • Flash memory can be programmed multiple times, but follow manufacturer guidelines for endurance and data retention.

4. I/O Initialization:

   • Initialize all I/O ports in software before use.
   • Set pull-up resistors if necessary for inputs.

5. Interrupts:

   • Configure interrupt priorities and enable interrupts as required by the application.

6. Serial Communication:

   • Set baud rate and other parameters for UART communication.
   • Ensure proper signal levels for RS-232 or TTL level communication.

7. Watchdog Timer:

   • Enable and configure the watchdog timer if needed for system reliability.
   • Reset the watchdog timer periodically in the main loop to prevent unwanted resets.

8. Debugging:

   • Use in-circuit debugging tools for troubleshooting and development.
   • Monitor serial output or LED indicators for debugging purposes.

9. Storage and Handling:

   • Store in anti-static packaging when not in use.
   • Handle with care to avoid ESD damage.

10. Environmental Considerations:

    • Operate within the temperature range specified to avoid thermal stress.
    • Protect from moisture and corrosive environments.

(For reference only)