Details

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BUY P87C51SFPN,112 https://www.utsource.net/itm/p/12591215.html

Parameter	Description	Value
Device Name	Microcontroller	P87C51SFPN,112
Package Type	Package type	SSOP-20
Operating Voltage	Supply voltage range	2.4V to 3.6V
Clock Frequency	Maximum clock frequency	24 MHz
Flash Memory Size	On-chip Flash memory size	8 KB
RAM Size	Internal RAM	256 bytes
Programmable I/O	Number of programmable I/O lines	32
Interrupt Sources	Number of interrupt sources	5
Timer/Counters	Number of timer/counters	3
Serial Communication Interface (SCI)	Serial communication interface availability	Yes
Watchdog Timer	Watchdog timer availability	Yes
Power-down Mode	Power-down mode availability	Yes
Operating Temperature Range	Temperature range for operation	-40°C to +85°C

Instructions for Use:

1. Power Supply Setup:

   • Ensure the supply voltage is within the specified range of 2.4V to 3.6V.
   • Connect a bypass capacitor between VCC and GND close to the device for stable operation.

2. Clock Configuration:

   • The device can operate with an external crystal or ceramic resonator up to 24 MHz.
   • Configure the oscillator circuit as per the application requirements.

3. Programming Flash Memory:

   • Use an appropriate programmer that supports the P87C51SFPN,112.
   • Follow the programming algorithm provided in the datasheet for reliable code upload.

4. I/O Pin Configuration:

   • Set the direction of I/O pins using internal registers.
   • Be cautious not to exceed the maximum ratings for input/output voltages.

5. Interrupt Handling:

   • Program the interrupt vectors and enable interrupts in the program to handle asynchronous events.

6. Timer/Counter Setup:

   • Initialize the timers/counters with desired modes and prescaler values.
   • Use them for timing delays, event counting, or PWM generation as needed.

7. Serial Communication:

   • Configure the SCI settings such as baud rate, data format, etc., for serial data exchange.
   • Ensure proper connection to external devices through UART interface.

8. Watchdog Timer:

   • Enable the watchdog timer if necessary to prevent system lockup.
   • Periodically reset the watchdog timer in the main loop to keep it active.

9. Power Management:

   • Utilize power-down mode to conserve energy during periods of inactivity.
   • Ensure all necessary conditions are met before entering power-down mode.

10. Temperature Considerations:

    • Operate the device within the specified temperature range to ensure reliability.
    • Implement thermal management techniques if operating near the upper limit.

(For reference only)