User manual ZILOG Z87300 PRODUCT SPECIFICATION

[. . . ] Note: The application code (AN0307-SC01) associated with this application note has been tested with ZDS II--Z8 Encore!version 4. 11. 0. Z87300 Overview Zilog's Z87300 Detection Module is a complete, compact, and easy to interface solution for motion detection and direction. It is designed using an Enhanced Passive Infrared (ePIR) technology and Zilog's Z8FS04 Motion Detection MCU with a powerful embedded software engine that delivers high-performance motion detection. Figure 1 on page 2 shows the location of the pins on the Z87300 Detection Module. [. . . ] If the cCmdState is 1, then the Mode of Operation is Serial Interface, and if the cCmdState is 0, then the Mode of Operation is Hardware Interface. Finally, the mode of operation is set, and cCmdState is set to IDLE state; it then proceeds to the main application loop. AN030701-0810 Page 7 of 30 Z87300TM Detection Module Application Walkthrough Figure 8. Flow Diagram of Operational Mode Main Application Loop Figure 9 on page 9 describes the main application loop of the Z87300 Detection Module. AN030701-0810 Page 8 of 30 Z87300TM Detection Module Application Walkthrough Figure 9. Flow Diagram of Main Application Loop of Application Code The following describes the operation of the main application loop: 1. The program checks the Sleep pin if it is low. If the Sleep pin is low, then the program enters to the Sleep Mode. Next the program checks the content of the cModule Status1 (cModuleStatus1) flag. · If the Serial Mode Register (SER_MODE_ENABLED) is HIGH, several select cases are available depending on the inputs of the select case. See AN030701-0810 Page 9 of 30 Z87300TM Detection Module Application Walkthrough 3. 4. Table 17 on page 22. The contents of the cModuleStatus1 flag are evaluated and updated. · If the Sleep Mode Request (MOD_SLEEP_REQ) is HIGH, then the MCU Sleep Flag will be on, and the MCU will go to sleep. The program gets the latest sense from the potentiometer if the SCAN_SENS_POT is enabled in cModuleStatus2 register and the SC3_ANA0_SCAN_REQUEST is disabled. Delay Setting from Potentiometer (Hardware Interface Mode) Get the latest Delay setting from the Pot. The program checks if the SCAN_DELAY_POT is enabled in cModuleStatus2 register and then updates the cDelayTime. AN030701-0810 Page 11 of 30 Z87300TM Detection Module Application Walkthrough Ambient Light Level for Gate comparison (Hardware Interface Mode) Get the latest Ambient light level for Light Gate comparison. The program checks if the SCAN_LIGHT_GATE is enabled in cModuleStatus2 register and the updates the value of cLGAmbient. ADC Conversion and Request Next Channel Conversion (Hardware Interface Mode) Request new ADC channel conversion. The program checks if the SCAN_REQUEST_NEW is enabled in cModuleStatus2 register and then the cModuleStatus2 register is updated. Sensor Stability Check for PIR sensor stability. The program checks the stability of the system by verifying if the MOD_PIR_STABLE is enabled in cModuleStatus1 register after power up. Motion Detection Check for motion detected and update the output on time as needed. The program checks if motion is detected by checking if the SCO_MOTION_DETECTED is enabled in ePIR_SCO register then send it once it is needed. References The following documents are associated with Z87300TM Detection Module and are available on www. zilog. com: · ePIR Motion Detection Zdots Single Board Computer Product Brief (PB0223) · ePIR Motion Detection Zdots SBC Product Specification (PS0284) · Z87300 Detection Module Evaluation Kit User Manual (UM0223) · Z87300 Detection Module Development Kit Quick Start Guide (QS0073) · Motion Detection and Control with ePIR Zdots Single Board Computer Cut Sheet (CS0005) · Z87300--A New PIR Motion Detection Architecture White Paper (WP0017) · Power Management and Customer Sensing with Zilog's Z87300 Detection Module Application Note (AN0301) · Z87300 Detection and Control Family Featuring ePIR Technology Product Specification (PS0285) · Z87300 Lens and Pyroelectric Sensor Product Specification (PS0286) · Z8 Encore!XP F0822 Series Product Specification (PS0225) · Z8 Encore! [. . . ] ePIR Enable Register (ePIR_Enable) Enable/Disable Patterns Define EPIR_DISABLE_PATTERN Value 00h Description Disables all primary engine functions, including motion detection. Used to temporarily or permanently shut down the engine. All primary engine functions as configured in Engine Status/Control Registers are enabled. Confirmation of enabled status is provided through Engine Disabled bit in Status/Control Register 0. EPIR_ENABLE_PATTERN 11h Table 25. [. . . ]