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Product Detailed Parameters
- Description：CP1854 - PROGRAMMABLE UART
- Series：*
- Mfr：Harris Corporation
- Package：Bulk
- Features：-
- Number of Channels：-
- FIFO's：-
- Protocol：-
- Data Rate (Max)：-
- Voltage - Supply：-
- With Auto Flow Control：-
- With IrDA Encoder/Decoder：-
- With False Start Bit Detection：-
- With Modem Control：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The CP1854AE is a CMOS Serial I/O Controller manufactured by Harris Corporation. It features a single serial channel with a maximum data transmission rate of 0.0244140625 MBps. The device operates within a supply voltage range of 4 V to 6.5 V and supports an external 8-bit data bus width. It utilizes NRZ data encoding/decoding methods and is compatible with ASYNC and BIT communication protocols. The component is housed in a PQCC44 package, which is a square plastic chip carrier with 44 terminals. It is designed for industrial temperature ranges, functioning between -40 °C and +85 °C.
Feature Summary
- Supports asynchronous serial communication protocols
- Integrates on-chip data RAM for buffer management
- Compatible with standard 8-bit external data buses
Applications
- Serial interface control in embedded systems
- Data communication modules requiring asynchronous transfer
- Industrial control units operating in extended temperature environments
Procurement Notes
Verify the manufacturer origin as Harris Corporation or its successors, given historical corporate changes. Confirm the package type matches the PQCC44 specification and ensure the operating temperature range meets the -40 °C to +85 °C requirement. Check for any specific ordering suffixes that may indicate variant differences, although official documentation should be consulted for precise part identification.
Selection Notes
Select this component when a single-channel serial controller with CMOS technology is required. Ensure the system design accommodates the 4 V to 6.5 V supply voltage range. Verify that the 0.0244140625 MBps data rate is sufficient for the application's throughput needs. Consider the PQCC44 package dimensions for PCB layout compatibility.
Part Context
The CP1854AE belongs to the CDP1854 series of serial I/O controllers produced by Harris Semiconductor. This family of components was designed to provide efficient serial data handling in microprocessor-based systems. The device integrates necessary logic for serial-to-parallel conversion and protocol support, serving as a bridge between parallel microprocessor buses and serial communication lines.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Engineering change notices or successor product lists from Harris Corporation or acquired entities should be reviewed for direct replacements.
