Z8523008VEC

Specialized Overview

The Z8523008VEC is a Serial Communication Controller (SCC) from the Z85230 family, manufactured by Zilog. It features dual full-duplex serial channels and operates at a maximum clock frequency of 8 MHz. The device supports multiple communication protocols including asynchronous, bisync, SDLC/HDLC, and extended synchronous modes. Data encoding options include NRZI, FM0, FM1, and Manchester. It incorporates CRC-16 or CRC-CCITT error detection capabilities and utilizes a 4-byte transmit FIFO alongside an 8-byte receive FIFO. The component is housed in a 44-pin PLCC package with an operating temperature range of -40°C to +100°C.

Specialized Feature Summary

• Dual full-duplex serial channels for simultaneous data transmission and reception
• Support for multi-protocol formats including async, monosync, bisync, and SDLC/HDLC
• Integrated hardware error detection using CRC-16 or CRC-CCITT algorithms
• On-chip FIFO buffers to reduce CPU overhead during data handling

Specialized Applications

• Network interface controllers requiring high-performance serial communication
• Industrial control systems operating within extended temperature ranges
• Embedded systems utilizing Z80-compatible bus architectures
• Modem control interfaces supporting various data encoding schemes

Specialized Procurement Notes

Verify component authenticity through authorized distributors as this part may be obsolete. Confirm RoHS compliance status prior to integration, as older batches may not meet current environmental standards. Ensure proper ESD handling procedures are followed due to CMOS technology sensitivity. Cross-reference datasheet revisions to confirm pinout compatibility with existing designs.

Specialized Selection Notes

Select the Z8523008VEC when dual-channel synchronous or asynchronous communication is required at speeds up to 8 MHz. Choose this model over single-channel variants if simultaneous bidirectional data flow is necessary. Consider the PLCC package constraints for PCB layout. Verify that the system voltage requirements align with the standard 5V logic levels typical for this SCC family.

Specialized Part Context

This component belongs to the Z85230 enhanced SCC family, designed to reduce external logic requirements compared to earlier generations. It shares architectural similarities with the Z85C30 series but offers improved programming ease and reduced CPU overhead. The Z8523008VEC specifically denotes the 8 MHz speed grade within the non-multiplexed variant of this family.

Specialized Replacement Considerations

The Z8523008PSC serves as a direct replacement offering the same electrical specifications in a DIP-40 package instead of PLCC. For applications requiring higher throughput, the Z8523016VEC provides equivalent functionality at a 16 MHz clock speed. Ensure mechanical footprint differences are addressed when substituting between package types.