Details

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BUY AT89LV52-12PI https://www.utsource.net/itm/p/11624488.html
IC MCU 8BIT 8KB FLASH 40DIP

Parameter	Description	Value
Part Number	Microcontroller	AT89LV52-12PI
Package Type	Package Type	PDIP (40-Pin)
Operating Voltage	Supply Voltage Range	2.7V to 6.0V
Clock Frequency	Maximum Clock Frequency	33 MHz
Flash Memory	Program Memory Size	8KB
EEPROM	EEPROM Size	None
RAM	Internal RAM Size	256B
Data Flash	Data Flash Size	None
I/O Pins	Number of I/O Pins	32
Timers/Counters	Number of Timers/Counters	3
Serial Communication	UART, SPI, I2C	1 UART
Interrupt Sources	Number of Interrupt Sources	5
Watchdog Timer	Watchdog Timer Available	Yes
Power Consumption	Active Mode Power Consumption (Typical @ 5V, 12MHz)	2.5mA
Operating Temperature	Operating Temperature Range	-40°C to 85°C
Programming Method	In-System Programming (ISP)	Yes
Package Dimensions	Package Dimensions (L x W x H)	600 x 9.25 x 1.75 mm

Instructions for Use

1. Power Supply:

   • Connect the VCC pin (pin 40) to a power supply within the range of 2.7V to 6.0V.
   • Connect the GND pin (pin 20) to ground.

2. Clock Configuration:

   • Use an external crystal oscillator or ceramic resonator connected between XTAL1 (pin 19) and XTAL2 (pin 18) for clock generation.
   • For a 12MHz crystal, typical capacitors of 30pF are used.

3. Reset Circuit:

   • Connect a reset switch or circuit to the RST pin (pin 9). A typical reset circuit includes a 10kΩ pull-up resistor and a 10μF capacitor to ground.

4. Program Memory:

   • The AT89LV52 supports in-system programming (ISP). Use an ISP programmer to write code to the flash memory.

5. I/O Configuration:

   • Configure the I/O pins as inputs or outputs using the appropriate register settings in your program.
   • Use internal pull-up resistors by setting the corresponding bit in the P0, P1, P2, or P3 registers.

6. Serial Communication:

   • Use the UART interface for serial communication. Configure the baud rate and other settings in the SCON register.

7. Interrupts:

   • Enable interrupts by setting the appropriate bits in the IE register. Service interrupt requests in the corresponding interrupt service routines.

8. Timers/Counters:

   • Configure the timers/counters using the TMOD and TCON registers. Use them for timing or counting tasks.

9. Watchdog Timer:

   • Enable the watchdog timer by setting the WDTEN bit in the WDTCON register. Clear the watchdog timer periodically to prevent a reset.

10. Power Management:

    • To reduce power consumption, use the idle mode by setting the IDL bit in the PCON register. For deeper power savings, use the power-down mode by setting the PD bit in the PCON register.

11. Programming:

    • Use a C compiler or assembly language to write your program. Flash the program into the microcontroller using an ISP programmer.

12. Testing:

    • After programming, test the microcontroller to ensure it operates correctly. Verify the functionality of all I/O pins, timers, and communication interfaces.

(For reference only)