Z8523008PSC

Specialized Overview

The Z8523008PSC is a Serial Communication Controller (SCC) from the ZiLOG Z85230 family, designed for embedded networking applications. It features dual full-duplex serial channels and supports processing speeds up to 5 Mbps. The device accommodates a crystal oscillator, baud rate generator, and digital phase-locked loop on each channel. It implements multi-protocol formats including async, monosync, bisync, SDLC/HDLC, and SDLC/HDLC loop modes. Encoding options include NRZI, FM0, FM1, and Manchester. Error detection utilizes CRC-16 or CRC-CCITT algorithms. The component includes a 4-byte transmit FIFO and an 8-byte receive FIFO to reduce CPU overhead. It operates within a temperature range of 0°C to +70°C.

Specialized Feature Summary

• Dual full-duplex serial communication channels with integrated baud rate generation and clock recovery capabilities.
• Supports multiple data link protocols such as SDLC/HDLC, Bisync, and asynchronous modes with flexible encoding schemes.
• Integrated error detection using CRC-16 or CRC-CCITT standards to ensure data integrity.
• On-chip FIFO buffers minimize processor intervention by handling packet storage during transmission and reception.

Specialized Applications

• Embedded network interface controllers requiring reliable serial data transfer.
• Industrial control systems utilizing SDLC/HDLC protocol stacks.
• Telecommunications equipment implementing Bisync or asynchronous communication links.

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature grade. Confirm availability status as legacy components may have limited supply chains. Ensure compatibility with existing system voltage levels and clock requirements before procurement.

Specialized Selection Notes

Select this model when dual-channel synchronous or asynchronous communication is required without external logic support. Compare against the Z85C30 series if higher operating temperatures or different pin configurations are needed. Evaluate the Z80230 variant if multiplexed bus interfaces are necessary for the target design.

Specialized Part Context

This component belongs to the Z85230 Enhanced SCC family, which improves upon the standard Z85C30 architecture. It offers enhanced programming ease and reduced CPU overhead through improved packet handling response times. The family targets applications needing robust serial connectivity with minimal external component count.

Specialized Replacement Considerations

The Z8523008PEC serves as a direct alternative with identical functionality but in a DIP-40 package instead of PLCC-44. Other family members like the Z8523010PSC offer higher clock speeds but require verification of electrical compatibility.