Z8523010VEG

Specialized Overview

The Z8523010VEG is an Enhanced Serial Communications Controller (ESCC) manufactured by Zilog. It features two independent serial channels supporting asynchronous, synchronous byte, HDLC, SDLC, X.25, BISYNC, and extended synchronization protocols. The device utilizes a CMOS process with a maximum clock frequency of 16.384 MHz and supports data rates up to 0.5125 MBps. It employs an 8-bit external data bus and interfaces via the Z80 bus compatibility. The component is housed in a 44-pin LCC package (QCCJ, LDCC44,.7SQ) and includes modem control I/Os usable as general-purpose I/Os along with a 10 x 19 frame status FIFO.

Specialized Feature Summary

• Supports multiple communication protocols including ASYNC, SYNC BYTE, SYNC HDLC, SYNC SDLC, X.25, BISYNC, and EXT SYNC.
• Features programmable transmit and receive FIFO buffers for efficient data handling.
• Provides dual-channel operation with independent modem control and general-purpose I/O capabilities.
• Includes hardware CRC generation and checking for SDLC mode.

Specialized Applications

• Network controller interfaces requiring multi-protocol support.
• Modem control systems utilizing dedicated or general-purpose I/O lines.
• Embedded serial communication links operating under Z80-compatible bus architectures.

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm voltage levels and package variations. Confirm RoHS compliance status as manufacturing sites may change. Check for product discontinuation notices or end-of-life notifications prior to final design approval. Ensure the source document matches the exact part number to avoid pinout mismatches between Z80230 and Z85230 variants.

Specialized Selection Notes

Select this component when a Z80-bus compatible ESCC with dual channels is required. Verify that the system clock can provide the necessary PCLK frequency for the desired baud rate. Ensure the application does not require life support critical components without explicit written approval. Compare pinouts carefully if substituting with the Z80230 variant, as address/data multiplexing differs.

Specialized Part Context

The Z8523010VEG belongs to the Z85230/L family of Enhanced Serial Communications Controllers. This family serves as a peripheral for microprocessors, offering advanced serial data handling compared to earlier SCC models. The 'L' designation typically indicates low-voltage or enhanced versions within the broader Z85230 series architecture.

Specialized Replacement Considerations

Public confirmed substitute part numbers: Z8523010VSG, Z8523010PSC.