Z8523310VSG

Specialized Overview

The Z85233 is a single-channel Enhanced Mono Serial Communication Controller (EMSCC) from Zilog, serving as the Channel A variant of the Z85230 ESCC. It operates on CMOS technology with a 7000-gate count and supports data rates up to 16 MHz via PCLK. The device features a 4-byte transmit FIFO and an 8-byte receive FIFO to reduce CPU overhead. Standard test conditions specify a supply voltage range of +4.50 V to +5.50 V. DC characteristics indicate a typical supply current of 8 mA at 10 MHz and 10 mA at 16 MHz. Absolute maximum ratings define the supply voltage limit at +7.0 V and storage temperature between -65°C and +150°C.

Specialized Feature Summary

• Single-channel full-duplex serial communication controller compatible with SCC and ESCC designs.
• Integrated 4-byte transmit and 8-byte receive FIFOs for improved packet handling and reduced CPU load.
• Simplified CPU hardware interface supporting software generation of interrupt acknowledge signals.
• Automatic SDLC frame management including flag transmission and ABORTed frame handling.

Specialized Applications

• Full-duplex data communications systems requiring protocol support.
• SDLC mode network interfaces utilizing automatic frame control features.
• Microprocessor families requiring simplified bus interface logic.

Specialized Procurement Notes

Verify the specific suffix 'VSG' against official ordering information to confirm package type and temperature grade. Confirm availability status as legacy components may be discontinued. Ensure system power supplies adhere to the +4.50 V to +5.50 V operating range specified in the datasheet.

Specialized Selection Notes

Select this component when a single-channel solution is required instead of the dual-channel Z85230. Verify that the target microprocessor architecture can accommodate the simplified databus setup times and software-generated /INTACK signals. Ensure the design utilizes the appropriate PLCC or PQFP package variants available within the family.

Specialized Part Context

The Z85233 belongs to the Zilog SCC family introduced in 1981, utilizing Superintegration Technology. It functions as the mono-channel counterpart to the Z85230 ESCC, retaining software compatibility while offering enhanced FIFO capabilities and reduced external logic requirements for modern embedded applications.

Specialized Replacement Considerations

The Z85230 ESCC serves as the dual-channel equivalent. Other members of the SCC family may offer pin-compatible alternatives depending on channel requirements and specific timing constraints.