MC68HC908GR8CDW

Product Overview

• Category: Microcontroller
• Use: Embedded systems, control applications
• Characteristics: Low power consumption, high performance, small size
• Package: CDIP (Ceramic Dual In-line Package)
• Essence: 8-bit microcontroller with integrated peripherals
• Packaging/Quantity: Tray packaging, quantity varies

Specifications

• Architecture: 8-bit
• CPU Speed: Up to 8 MHz
• Program Memory Size: 8 KB
• RAM Size: 512 bytes
• Data EEPROM Size: 128 bytes
• I/O Pins: 28
• Timers: 2 x 8-bit, 1 x 16-bit
• Communication Interfaces: SPI, SCI, I2C
• Operating Voltage Range: 2.7V to 5.5V
• Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MC68HC908GR8CDW has a total of 28 pins. The pin configuration is as follows:

1. VDD - Power supply voltage
2. VSS - Ground
3. RESET - Reset input
4. IRQ - Interrupt request input
5. PTB0 - Port B, bit 0
6. PTB1 - Port B, bit 1
7. PTB2 - Port B, bit 2
8. PTB3 - Port B, bit 3
9. PTB4 - Port B, bit 4
10. PTB5 - Port B, bit 5
11. PTB6 - Port B, bit 6
12. PTB7 - Port B, bit 7
13. PTC0 - Port C, bit 0
14. PTC1 - Port C, bit 1
15. PTC2 - Port C, bit 2
16. PTC3 - Port C, bit 3
17. PTC4 - Port C, bit 4
18. PTC5 - Port C, bit 5
19. PTC6 - Port C, bit 6
20. PTC7 - Port C, bit 7
21. VCAP - External capacitor connection for the internal voltage regulator
22. VDDA - Analog power supply voltage
23. ADC0 - Analog-to-digital converter input channel 0
24. ADC1 - Analog-to-digital converter input channel 1
25. ADREF - Analog reference voltage input
26. VSSA - Analog ground
27. OSCIN - Oscillator input
28. OSCOUT - Oscillator output

Functional Features

• Integrated 8-bit CPU with a wide range of instructions
• On-chip memory (program memory, RAM, EEPROM)
• Multiple communication interfaces for data transfer
• Timers for precise timing control
• Interrupt capability for handling external events
• Low power consumption for energy-efficient applications
• Small form factor suitable for space-constrained designs

Advantages and Disadvantages

Advantages: - High performance and low power consumption - Compact size allows for integration in various applications - Integrated peripherals reduce external component count - Wide operating voltage range enables flexibility in power supply - Support for multiple communication interfaces enhances connectivity

Disadvantages: - Limited program memory size may restrict complex applications - Limited RAM size may limit data storage capacity - Limited I/O pins may require additional external components for larger systems - Temperature range may not be suitable for extreme environments

Working Principles

The MC68HC908GR8CDW operates based on an 8-bit architecture. It executes instructions stored in its program memory to perform various tasks. The integrated peripherals, such as timers and communication interfaces, enable the microcontroller to interact with external devices. The CPU processes data and controls the flow of information within the system. Interrupts can be used to handle time-critical events or external triggers. The microcontroller operates within a specified voltage and temperature range to ensure reliable performance.

Detailed Application Field Plans

The MC68HC908GR8CDW is widely used in various embedded systems and control applications, including but not limited to: - Home automation systems - Industrial automation - Automotive electronics - Medical devices - Consumer electronics - Internet of Things (IoT) devices

Its small size, low power consumption, and integrated peripherals make it suitable for applications where space and energy efficiency are crucial. The microcontroller's ability to communicate with external devices via different interfaces enhances its versatility in different application fields.

Detailed and Complete Alternative Models

Some alternative models to the MC68HC908GR8CDW that offer similar functionality include: - ATmega328P by Microchip Technology - PIC16F877A by Microchip Technology - STM32F103C8T6 by STMicro