Z8937320FSG

Overview

The Z8937320FSG is a 16-bit Digital Signal Processor (DSP) from the Z893x3 family, manufactured by Zilog. It features a modified Harvard architecture with separate program and dual data memory banks. The core includes a 24-bit ALU and accumulator supporting single-cycle multiply and ALU operations. Key specifications include 8 KWords of OTP program memory, 512 words of Data RAM, and a maximum clock frequency of 20 MHz. The device integrates a 4-channel, 8-bit Half-Flash A/D converter, SPI interface, three Counter/Timers, and up to 40 bits of I/O. It operates on a 5V ±10% supply within a standard temperature range of 0°C to +70°C.

Feature Summary

• 16-Bit Fixed Point DSP Core with 24-Bit ALU/Accumulator and Single-Cycle Multiply
• Integrated 4-Channel, 8-Bit Half-Flash A/D Converter
• On-Chip Peripherals: SPI, Three Counter/Timers (with PWM/WDT), and Up to 40 Bits I/O
• 8 KWords OTP Program Memory and 512 Words Data RAM

Applications

• Compression and Filtering Algorithms
• Frequency Detection Systems
• Audio Processing and Voice Detection
• Speech Synthesis Applications

Procurement Notes

Verify the specific package configuration for the FSG suffix against official datasheets, as the Z893x3 family utilizes multiple packages including 44-pin PLCC/PQFP, 64-pin TQFP, 68-pin PLCC, and 80-pin PQFP. Confirm that the OTP version meets prototype or early production requirements. Ensure compatibility with the 5V operating voltage and check for moisture sensitivity handling during procurement.

Selection Notes

Select the Z8937320FSG when a compact solution requiring integrated analog-to-digital conversion and digital signal processing is needed. The choice depends on the required pin count; ensure the package variant supports the necessary I/O and peripheral functions like SPI and PWM. Consider the 20 MHz performance limit and the 5V power supply requirement. Verify that the 8 KWord OTP capacity suffices for the application's code size before finalizing selection.

Part Context

The Z8937320FSG belongs to the Z89223/273/323/373 product family. These devices are optimized for high-performance signal processing with minimal silicon area. The family differentiates between ROM and OTP versions, with the Z893x3 series typically offering OTP options suitable for prototypes. All members share the same core architecture and peripheral set, differing primarily in memory type and package availability.

Replacement Considerations

Direct replacements must match the 16-bit DSP core, 20 MHz speed, and integrated A/D converter. Verify pin compatibility if substituting across different package types within the Z893x3 family (e.g., 44-pin vs 64-pin). No other public substitute part numbers are confirmed in the provided documentation.