AT89LS51-16JU

Product Overview

Category

AT89LS51-16JU belongs to the category of microcontrollers.

Use

This microcontroller is commonly used in various electronic applications that require embedded control systems.

Characteristics

• Low-power consumption
• High-performance 8-bit CPU
• Flash memory for program storage
• In-system programmable
• 4KB of on-chip Flash memory
• 128 bytes of RAM
• 32 programmable I/O lines
• Two 16-bit timer/counters
• Full-duplex UART serial channel
• Low-voltage programming capability
• Power-on reset and programmable brown-out detection
• Six interrupt sources with two priority levels
• Programmable watchdog timer

Package

AT89LS51-16JU is available in a 44-pin PLCC (Plastic Leaded Chip Carrier) package.

Essence

The essence of AT89LS51-16JU lies in its ability to provide a cost-effective solution for embedded control applications, offering high performance and low power consumption.

Packaging/Quantity

AT89LS51-16JU is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Operating Voltage: 2.7V to 6V
• Maximum Clock Frequency: 16 MHz
• Flash Memory Size: 4KB
• RAM Size: 128 bytes
• Number of I/O Lines: 32
• Timer/Counter: Two 16-bit
• Serial Communication: Full-duplex UART
• Interrupt Sources: Six with two priority levels
• Watchdog Timer: Programmable

Detailed Pin Configuration

The AT89LS51-16JU microcontroller has a total of 44 pins. The pin configuration is as follows:

1. P1.0
2. P1.1
3. P1.2
4. P1.3
5. P1.4
6. P1.5
7. P1.6
8. P1.7
9. RST
10. P3.0
11. P3.1
12. P3.2
13. P3.3
14. P3.4
15. P3.5
16. P3.6
17. P3.7
18. XTAL2
19. XTAL1
20. GND
21. VCC
22. ALE/PROG
23. PSEN
24. EA/VPP
25. P2.0
26. P2.1
27. P2.2
28. P2.3
29. P2.4
30. P2.5
31. P2.6
32. P2.7
33. AVCC
34. ADC0
35. ADC1
36. ADC2
37. ADC3
38. ADC4
39. ADC5
40. ADC6
41. ADC7
42. P0.0
43. P0.1
44. P0.2

Functional Features

• Low-power consumption allows for extended battery life in portable applications.
• High-performance 8-bit CPU enables efficient execution of instructions.
• In-system programmability allows for easy updates of the program memory.
• Flash memory provides non-volatile storage for the program code.
• Programmable I/O lines offer flexibility in interfacing with external devices.
• Timer/counters facilitate time-sensitive operations and event counting.
• UART serial channel enables communication with other devices.
• Power-on reset and brown-out detection ensure reliable operation.
• Interrupt sources allow for efficient handling of external events.
• Watchdog timer provides a mechanism for system reset in case of software failures.

Advantages and Disadvantages

Advantages

• Low-power consumption extends battery life.
• In-system programmability allows for easy updates.
• Flash memory provides non-volatile storage.
• High-performance CPU enables efficient execution.
• Programmable I/O lines offer flexibility.

Disadvantages

• Limited program memory size (4KB).
• Limited RAM size (128 bytes).
• Limited number of I/O lines (32).

Working Principles

AT89LS51-16JU operates based on the principles of microcontroller architecture. It executes instructions stored in its flash memory, interacts with external devices through its I/O lines, and utilizes various peripherals to perform specific tasks. The CPU fetches instructions from memory, decodes them, and executes them sequentially. Interrupts can be used to handle time-critical events or external inputs. The microcontroller's working principle revolves around executing instructions and responding to external stimuli to achieve the desired functionality.

Detailed Application Field Plans

AT89LS51-16JU finds