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Product Detailed Parameters
- Description：IC ASYNC COMM INTERFC ADT 28SOIC
- 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：Surface Mount
- Package / Case：28-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：28-SOIC
- Grade：-
- Qualification：-
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Overview
The CDP65C51M1 is a CMOS Asynchronous Communications Interface Adapter (ACIA) manufactured by Harris Corporation. It functions as a serial I/O controller with one channel, supporting ASYNC and BIT communication protocols using NRZ data encoding. The device features an 8-bit external data bus and a 2-bit address bus. It operates within a temperature range of -40 °C to 85 °C and supports a maximum clock frequency of 1 MHz. The component is housed in a PDSO28 plastic package.
Feature Summary
- Supports asynchronous serial communication protocols
- Integrates NRZ data encoding and decoding capabilities
- Provides single-channel serial input/output control
Applications
- Serial interface adaptation in embedded systems
- Microcontroller peripheral expansion for serial data transfer
- Industrial control system communication modules
Procurement Notes
Verify the specific manufacturer source, as Harris Corporation assets have undergone corporate transitions. Confirm the component status, as listings indicate it may be obsolete. Ensure the package type matches the required PDSO28 specification. Check for RoHS compliance status, as original specifications may differ from current regulatory requirements. Validate pin compatibility if replacing existing designs.
Selection Notes
Select this component when a dedicated serial I/O controller is required for asynchronous data transmission. The 1 MHz clock speed limits high-speed applications; ensure system timing requirements align with this constraint. The PDSO28 package dictates board layout constraints. Consider thermal operating limits of -40 °C to 85 °C for environmental suitability. Verify that the 8-bit data bus width matches the host microcontroller interface.
Part Context
The CDP65C51 series includes variants such as CDP65C51E2X, CDP65C51AE4X, and CDP65C51D4X. These variants share similar functional descriptions but differ in package types (PDIP, CDIP) and maximum clock frequencies (up to 4 MHz). The M1 suffix specifically denotes the PDSO28 plastic small outline package variant with a 1 MHz maximum clock frequency.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Cross-reference with other ACIA components only if electrical parameters and pinouts are verified compatible.
