DS89C387TMEA

Product Overview

• Category: Microcontroller
• Use: Embedded systems, industrial automation, consumer electronics
• Characteristics: High-performance, low-power consumption, integrated peripherals
• Package: TQFP-44
• Essence: 8-bit microcontroller with advanced features
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Architecture: 8051
• CPU Speed: 33 MHz
• Program Memory: 64 KB Flash
• Data Memory: 2 KB RAM
• I/O Pins: 32
• Timers/Counters: 3
• Serial Communication: UART, SPI, I2C
• Analog-to-Digital Converter: 8 channels, 10-bit resolution
• Operating Voltage: 2.7V to 5.5V
• Operating Temperature: -40°C to +85°C

Pin Configuration

The DS89C387TMEA microcontroller has a total of 44 pins. The pin configuration is as follows:

1. P0.0
2. P0.1
3. P0.2
4. P0.3
5. P0.4
6. P0.5
7. P0.6
8. P0.7
9. RST
10. P1.0
11. P1.1
12. P1.2
13. P1.3
14. P1.4
15. P1.5
16. P1.6
17. P1.7
18. XTAL1
19. XTAL2
20. AVSS
21. VDD
22. P2.0
23. P2.1
24. P2.2
25. P2.3
26. P2.4
27. P2.5
28. P2.6
29. P2.7
30. ALE/PROG
31. PSEN
32. EA/VPP
33. P3.0/RXD
34. P3.1/TXD
35. P3.2/INT0
36. P3.3/INT1
37. P3.4/T0
38. P3.5/T1
39. P3.6/WR
40. P3.7/RD
41. VSS
42. XTAL2
43. XTAL1
44. AVDD

Functional Features

• High-performance 8-bit microcontroller with an advanced 8051 architecture.
• Integrated peripherals such as UART, SPI, and I2C for serial communication.
• On-chip analog-to-digital converter with 8 channels and 10-bit resolution.
• Low-power consumption design for energy-efficient applications.
• Three timers/counters for precise timing and event counting.
• Wide operating voltage range of 2.7V to 5.5V for versatile power supply options.

Advantages and Disadvantages

Advantages: - Powerful 8051 architecture provides a wide range of features and capabilities. - Integrated peripherals reduce the need for external components, saving cost and board space. - Low-power consumption extends battery life in portable applications. - High-performance CPU speed of 33 MHz enables fast execution of instructions. - Wide operating temperature range allows reliable operation in harsh environments.

Disadvantages: - Limited program memory (64 KB) and data memory (2 KB) may restrict the complexity of applications. - 8-bit architecture may not be suitable for certain high-performance applications. - Limited number of I/O pins (32) may limit the connectivity options in complex systems.

Working Principles

The DS89C387TMEA microcontroller is based on the 8051 architecture, which utilizes an 8-bit CPU. It executes instructions stored in its program memory and interacts with external devices through its I/O pins and integrated peripherals. The microcontroller operates at a clock speed of 33 MHz, allowing for fast execution of instructions and efficient processing of data. It can communicate with other devices using UART, SPI, and I2C protocols. The on-chip analog-to-digital converter enables the microcontroller to interface with analog sensors and convert their readings into digital values. The low-power consumption design ensures energy efficiency, making it suitable for battery-powered applications.

Detailed Application Field Plans

The DS89C387TMEA microcontroller finds applications in various fields, including:

1. Embedded Systems: Used in industrial automation, home automation, and automotive systems for control and monitoring purposes.
2. Consumer Electronics: Integrated into smart appliances, remote controls, and wearable devices for user interface and data processing.