Details

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BUY MC68HC11F1CPU4 https://www.utsource.net/itm/p/11646570.html
IC MCU 8BIT ROMLESS 80LQFP

Parameter	Description	Value/Range
Part Number	Part number of the microcontroller	MC68HC11F1CPU4
Manufacturer	Manufacturer of the microcontroller	Motorola (now NXP)
Package Type	Type of package	40-pin DIP (Dual Inline Package)
Operating Voltage	Range of supply voltage for operation	5.0 V ± 5%
Operating Temperature	Range of temperature for reliable operation	-40°C to +85°C
Clock Frequency	Maximum clock frequency	2 MHz
Program Memory	Size of on-chip program memory	8 KB EEPROM
Data Memory	Size of on-chip data memory	512 B RAM
I/O Ports	Number of general-purpose input/output pins	32
Timers	Number and type of timers	2 x 16-bit timers
Serial Communication	Types of serial communication interfaces	SPI, SCI, I2C
Interrupts	Number of interrupt sources	16
Watchdog Timer	Presence of watchdog timer	Yes
Power Consumption	Typical power consumption at maximum clock frequency and operating voltage	150 mW
Programming Interface	Method for programming the on-chip EEPROM	In-Circuit Serial Programming (ICSP)

Instructions for Using MC68HC11F1CPU4

1. Power Supply:

   • Connect the Vcc pin to a 5.0 V ± 5% power supply.
   • Connect the GND pin to ground.

2. Clock Configuration:

   • Connect an external crystal or oscillator to the XTAL1 and XTAL2 pins for the desired clock frequency.
   • Alternatively, use the internal RC oscillator by configuring the appropriate registers.

3. Reset Circuit:

   • Connect a reset circuit to the RESET pin to ensure proper initialization.
   • The reset circuit should provide a low signal for at least 100 μs after power-up.

4. Programming:

   • Use an In-Circuit Serial Programming (ICSP) tool to program the on-chip EEPROM.
   • Ensure the programming voltage (Vpp) is applied to the appropriate pin during programming.

5. I/O Configuration:

   • Configure the I/O ports using the Data Direction Registers (DDRs).
   • Set the direction of each port pin as input or output.

6. Serial Communication:

   • Initialize the SPI, SCI, or I2C interfaces by configuring the corresponding control registers.
   • Use the appropriate pins for data transmission and reception.

7. Interrupt Handling:

   • Enable interrupts by setting the appropriate bits in the interrupt control registers.
   • Write interrupt service routines (ISRs) to handle specific interrupt sources.

8. Watchdog Timer:

   • Enable the watchdog timer by setting the appropriate register bits.
   • Periodically reset the watchdog timer to prevent a system reset.

9. Power Management:

   • Use the power-down mode to reduce power consumption when the microcontroller is idle.
   • Re-enable the microcontroller by generating a reset or an interrupt.

10. Testing and Debugging:

    • Use an in-circuit debugger to test and debug the microcontroller.
    • Monitor the I/O pins and internal registers to ensure correct operation.

For detailed information and specific register configurations, refer to the official datasheet and application notes provided by NXP.

(For reference only)