P87C51SBPN,112

Basic Information Overview

• Category: Microcontroller
• Use: Embedded systems, control applications
• Characteristics: 8-bit microcontroller, high-performance, low-power consumption
• Package: DIP (Dual In-line Package)
• Essence: Central processing unit for controlling and managing electronic devices
• Packaging/Quantity: Individual units

Specifications

• Architecture: 8051
• Bit Size: 8-bit
• Clock Speed: Up to 33 MHz
• Program Memory Size: 4 KB
• Data Memory Size: 128 bytes
• I/O Pins: 32
• Timers/Counters: 3
• Serial Communication: UART, SPI, I2C
• Operating Voltage: 2.7V to 5.5V
• Operating Temperature: -40°C to +85°C

Detailed Pin Configuration

The P87C51SBPN,112 microcontroller has a total of 40 pins. The pin configuration is as follows:

1. VCC - Power supply voltage
2. XTAL1 - Crystal oscillator input
3. XTAL2 - Crystal oscillator output
4. RST - Reset input
5. EA/VPP - External Access/Programming Enable
6. PSEN - Program Store Enable
7. ALE/PROG - Address Latch Enable/Program Pulse
8. P0.0 - Port 0, Pin 0
9. P0.1 - Port 0, Pin 1
10. P0.2 - Port 0, Pin 2
11. P0.3 - Port 0, Pin 3
12. P0.4 - Port 0, Pin 4
13. P0.5 - Port 0, Pin 5
14. P0.6 - Port 0, Pin 6
15. P0.7 - Port 0, Pin 7
16. VSS - Ground
17. P1.0 - Port 1, Pin 0
18. P1.1 - Port 1, Pin 1
19. P1.2 - Port 1, Pin 2
20. P1.3 - Port 1, Pin 3
21. P1.4 - Port 1, Pin 4
22. P1.5 - Port 1, Pin 5
23. P1.6 - Port 1, Pin 6
24. P1.7 - Port 1, Pin 7
25. ALE/PROG - Address Latch Enable/Program Pulse
26. PSEN - Program Store Enable
27. P2.0 - Port 2, Pin 0
28. P2.1 - Port 2, Pin 1
29. P2.2 - Port 2, Pin 2
30. P2.3 - Port 2, Pin 3
31. P2.4 - Port 2, Pin 4
32. P2.5 - Port 2, Pin 5
33. P2.6 - Port 2, Pin 6
34. P2.7 - Port 2, Pin 7
35. RxD - Serial Data Receive
36. TxD - Serial Data Transmit
37. INT0 - External Interrupt 0
38. INT1 - External Interrupt 1
39. WR - External Data Memory Write
40. RD - External Data Memory Read

Functional Features

• High-performance 8-bit microcontroller based on the 8051 architecture
• Low-power consumption for energy-efficient applications
• Wide operating voltage range for flexibility in power supply
• Multiple serial communication interfaces (UART, SPI, I2C) for data exchange
• On-chip timers/counters for precise timing and event management
• External interrupt support for handling external events
• Built-in program memory and data memory for storing instructions and data

Advantages and Disadvantages

Advantages: - High-performance capabilities suitable for various control applications - Low-power consumption extends battery life in portable devices - Wide operating voltage range allows compatibility with different power sources - Multiple serial communication interfaces enable easy integration with other devices - On-chip timers/counters provide accurate timing and event management

Disadvantages: - Limited program memory size may restrict the complexity of applications - Limited data memory size may impose constraints on data storage - Lack of advanced features found in more modern microcontrollers

Working Principles

The P87C51SBPN,112 microcontroller operates based on the 8051 architecture. It executes instructions stored in its program memory to perform specific tasks. The central processing unit (CPU) fetches instructions from program memory, processes them, and controls the flow of data