Z8FS040BHH20EG

Overview

The Z8FS040BHH20EG is a microcontroller within the ZMOTION Detection and Control Family, designed for Passive Infrared (PIR) motion detection applications. It integrates an eZ8 CPU core with built-in PIR technology algorithms running in the background. The device features 4 KB of user-accessible Flash memory and 256 bytes of available RAM. It operates on a 2.7 V to 3.6 V supply voltage and supports an internal precision oscillator at 5.53 MHz or an external clock up to 20 MHz. The component is housed in a 20-pin SSOP package.

Feature Summary

• Integrated ZMOTION PIR technology with software API control
• eZ8 CPU core with 4 KB user Flash and 256 bytes user RAM
• Sigma Delta ADC with dedicated channel for pyroelectric sensor input
• Supports single or dual pyroelectric sensors via API configuration

Applications

• Lighting Control systems
• HVAC occupancy sensing
• Access control mechanisms
• Vending machine proximity detection

Procurement Notes

Verify that the specific ordering suffix corresponds to the required lens and pyroelectric sensor combination if purchasing bundled solutions. Confirm the PIR engine revision identifier matches the intended application stability requirements. Ensure generic detection source code is downloaded from official channels prior to programming.

Selection Notes

Select this part when a 20-pin SSOP package is required for the Z8FS040 series. Verify that the GPIO count and peripheral availability align with the specific lens and sensor configuration chosen. Check if the integrated PIR engine meets sensitivity and range requirements without needing external processing.

Part Context

This MCU belongs to the Z8 Encore! XP F082A base device family. It is distinct from the 8-pin SOIC and 28-pin SSOP variants by its pin count and available I/O lines. The 'B' identifier denotes a specific PIR technology revision offering improved detection stability and extended detection modes compared to earlier releases.

Replacement Considerations

Direct replacements include other Z8FS040xHH20EG variants with different PIR engine revisions. For functional equivalence without PIR integration, consider the base Z8F082AHH020EG MCU, though custom algorithm implementation will be required.