The Zilog Z0858110CEA is a member of the Z8500 family of Serial Input/Output Controller (SIO) chips. Specifically, this is a Dual Universal Asynchronous Receiver/Transmitter (DUART) chip designed for managing asynchronous serial communication. It offers two independent UART channels in a single package, simplifying the design of systems requiring multiple serial ports. This chip is designed to work with Zilog's Z80 family of microprocessors.

Applications

• Serial communication interfaces for embedded systems
• Multi-port serial communication devices
• Data acquisition systems
• Industrial control systems
• Point-of-sale terminals
• Modem interfaces
• Serial printers and plotters

Features

• Two independent UART channels: Allows for simultaneous communication on two serial ports.
• Programmable baud rate generator: Supports a wide range of baud rates.
• 5-8 bit character length: Flexible data format support.
• Odd, even, or no parity: Parity checking for data integrity.
• 1, 1.5, or 2 stop bits: Configurable stop bit options.
• Interrupt generation: Interrupts the CPU on various events such as data reception or transmission completion.
• Full duplex operation: Allows for simultaneous transmission and reception.
• Modem control signals: Supports RTS, CTS, DTR, DSR, and RI signals.
• TTL compatible inputs and outputs: Easy interface with other TTL logic devices.

Benefits

• Reduced component count: Integrates two UARTs into a single chip, saving board space and cost.
• Flexible serial communication: Supports a wide range of serial communication protocols and baud rates.
• Improved system performance: Hardware UARTs offload serial communication tasks from the CPU.
• Enhanced data integrity: Parity checking ensures accurate data transmission.
• Simplified system design: Easy interface with other TTL logic devices.
• Reduced development time: Well-documented and easy to use.
• Cost-effective solution: Provides a high-performance serial communication solution at a competitive price.

Additional Details

The Z0858110CEA typically operates from a 5V power supply. Its baud rate generator is often driven by an external crystal oscillator. The device is usually programmed through its control registers, which are accessed via the microprocessor bus. The Z0858110CEA is available in various package types, including DIP and PLCC. Its interrupt capabilities allow the host processor to efficiently manage serial communication tasks without constantly polling the UART. This chip is commonly used in legacy systems and industrial applications where reliable serial communication is essential. Refer to Zilog's documentation for detailed pinout information, register definitions, and application notes.