Z80C3008PSG

Specialized Overview

The Z80C3008PSG is a CMOS Serial Communications Controller (SCC) designed for multiplexed bus microprocessors. It features two independent full-duplex channels supporting data rates up to 4.1 Mbps. The device supports asynchronous, synchronous byte-oriented, and synchronous bit-oriented protocols including SDLC/HDLC. It includes integrated Baud Rate Generators (BRG), Digital Phase-Locked Loops (DPLL), and crystal oscillators. The component operates at an 8 MHz clock speed and utilizes a 40-pin Dual In-line Package (PDIP).

Specialized Feature Summary

• Dual-channel architecture with independent clock recovery mechanisms.
• Multiprotocol support for asynchronous, synchronous, and SDLC/HDLC modes.
• Integrated hardware CRC generation and checking capabilities.
• Enhanced DMA support with status FIFO and byte counters.

Specialized Applications

• Serial communication interfaces for multiplexed bus systems.
• T1 digital trunk line implementations.
• Peripheral control for storage devices such as diskettes and tape drives.

Specialized Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation to confirm package type and temperature range. Note that this part number may be subject to End-of-Life (EOL) status or limited availability. Confirm RoHS compliance requirements prior to procurement as specifications vary by manufacturing revision.

Specialized Selection Notes

Select the Z80C30 variant specifically when interfacing with CPUs utilizing multiplexed address/data buses. Ensure the system design accommodates the required 8 MHz master clock frequency. Verify that the application logic aligns with the software-compatible register set of the SCC family.

Specialized Part Context

This component belongs to the Zilog SCC family, which also includes the Z85C30 optimized for nonmultiplexed buses. Both variants share pin compatibility with earlier NMOS versions, facilitating direct upgrades in existing designs while offering improved power consumption and noise immunity through CMOS technology.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult official Zilog documentation for current lifecycle status and potential obsolescence notices regarding this specific model.