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MC6850P
MC6850P is a Universal Asynchronous Receiver/Transmitter (UART) chip, used for serial communication in microprocessor systemsMC6850P
MC6850P is a Universal Asynchronous Receiver/Transmitter (UART) chip, used for serial communication in microprocessor systems
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MC6850P DataSheet
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Details
The MC6850P is a versatile asynchronous communications interface adapter (ACIA) chip designed by Motorola. It is commonly used in various communication applications such as modems, terminals, printers, and other devices.The MC6850P features a 2-wire serial interface for communication with a microprocessor or other external devices. It supports both full-duplex and half-duplex communication modes with adjustable baud rates ranging from 75 to 19200 bits per second.It has a built-in 8-bit parallel port for interfacing with external devices and can be configured for both synchronous and asynchronous communication. The chip also includes a flexible clock generator, programmable control registers, and error detection capabilities.The MC6850P is known for its reliability, ease of use, and compatibility with a wide range of microprocessors and devices. It is a popular choice for designers looking to add serial communication capabilities to their systems
Key Features
- Single-channel communication controller
- Operates in both synchronous and asynchronous modes
- Includes a USART
- Supports full-duplex operation
- Programmable baud rate generator
- Can be programmed to support different word lengths and stop bits
- Includes control and status registers for easy communication
Application
- Data communication
- Telecommunication
- Networking
- Telemetry
- Automation
- Industrial control systems
- Handheld terminals
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Rohs Code | No | Part Life Cycle Code | Obsolete |
| Reach Compliance Code | HTS Code ! | 8542.31.00.01 | |
| Address Bus Width ! | 1 | Boundary Scan | NO |
| Bus Compatibility | 6800 | Clock Frequency-Max | 1 MHz |
| Communication Protocol | ASYNC, BIT | Data Encoding/Decoding Method | NRZ |
| Data Transfer Rate-Max | 0.125 MBps | External Data Bus Width | 8 |
| JESD-30 Code | R-PDIP-T24 | JESD-609 Code | e0 |
| Length | 31.75 mm | Low Power Mode | NO |
| Number of DMA Channels | Number of I/O Lines | ||
| Number of Serial I/Os | 1 | Number of Terminals | 24 |
| On Chip Data RAM Width | Operating Temperature-Max | 70 °C | |
| Operating Temperature-Min | Package Body Material | PLASTIC/EPOXY | |
| Package Code | DIP | Package Shape | RECTANGULAR |
| Package Style | IN-LINE | Qualification Status ! | Not Qualified |
| RAM (words) | 0 | Seated Height-Max | 5.08 mm |
| Supply Voltage-Max | 5.25 V | Supply Voltage-Min | 4.75 V |
| Supply Voltage-Nom | 5 V | Surface Mount ! | NO |
| Technology | NMOS | Temperature Grade ! | COMMERCIAL |
| Terminal Finish | TIN LEAD | Terminal Form ! | THROUGH-HOLE |
| Terminal Pitch ! | 2.54 mm | Terminal Position | DUAL |
| Width | 15.24 mm | uPs/uCs/Peripheral ICs Type | SERIAL IO/COMMUNICATION CONTROLLER, SERIAL |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is MC6850P?
The MC6850P is a versatile asynchronous communications interface adapter (ACIA) designed by Motorola. It is commonly used for serial communication in microcontroller-based systems, such as industrial control systems, embedded applications, and communication modules.
How Does MC6850P Work?
The MC6850P works by providing the necessary interface for asynchronous serial communication between a microcontroller and external devices. It supports the generation and detection of serial data, making it suitable for applications requiring reliable and robust serial communication.
How Many Pins does MC6850P have and What are the Functions of the Pinout Configuration?
The MC6850P is housed in a 24-pin DIP (Dual Inline Package) package. The pinout configuration includes:
- RTS, TX, RX, DCD, CTS, DSR, Rl, Rl*: Serial communication control and data pins.
- VCC, GND: Power supply and ground pins.
- BAUD, CLOCK, RESET, INT*: Interface control and status pins.
- SYNC*, RxD*, TxD*: Synchronization and data communication pins.
What are the Pros and Cons of MC6850P?
Pros:
- Versatility: Suitable for a wide range of asynchronous serial communication applications.
- Reliability: Provides robust communication interface for microcontroller-based systems.
- Compatibility: Works well with various microcontrollers and embedded systems.
- Proven Technology: The MC6850P has been a popular choice for serial communication in legacy systems and retro computing.
Cons:
- Obsolete: As a legacy component, availability may be limited, and it may not offer the latest features and performance.
- Power Consumption: May consume more power compared to modern communication interfaces.
- External Components: May require additional external components for specific applications and integration.
Are There Any Equivalents/Alternatives to MC6850P for Recommendation?
- The XR68C681 from Exar Corporation is a similar asynchronous communications interface adapter that can serve as an alternative to the MC6850P.
- Alternatives to the MC6850P include the 16550 UART and the 8250 UART, which are commonly used in microcontroller systems.
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