Connect a +3.3V power supply to TP1 (RED) and ground to TP6 (BLK) on the Motherboard. For normal operation, keep this switch open and use the RESET button to reset the MCU during testing. This MRST DIP switch allows easy interface of an external MCU to the HI Closing SW2 position 4 keeps the RESET pin low, forcing the Freescale MCU GPIOs into a high impedance state. On the MCU board, set SW1 positions 6:1 are set to binary, verify SW2 position 4 (MRST) is in the open position, otherwise the MCU will be held in the reset state. The LED Jumper disconnects the LED so an accurate current measurement can be made. J12 (VDD LINK) and J8 (GND LINK) connect VDD and GND to the HI 8436 and can be used to measure the device supply current. Make sure the daughter board jumpers and switch positions match the picture below. Demonstration Set up 3.3V Supply Bank 0 Sensor Inputs VWET0 From Sensors DIP SW (8) SUPPLY GND LEDs (10) User Push Button Switches (4) RS- 232 Console RESET Button MC9S12XD 16 Bit MCU SPI (4) nmr Bank 1 Sensor Inputs HOLT HI Bank 2 Sensor Inputs Bank 3 Sensor Inputs VWET1 From Sensors VWET2 From Sensors VWET3 From Sensors DIP SW (8) DIP SW (8) DIP SW (8) SUPPLY GND SUPPLY GND SUPPLY GND DIP SW (4) DIP SW (6) 3Ĥ Default Jumper and Switch Settings HI 8436 Board JUMPER POSITION DESCRIPTION J8 ON GND Link for HI 8436 supply J9 ON VDD Link for LED supply current (disconnect to measure HI 8436 supply current at TP13) J5 3 Bank 0 = Left Supply/Open, Right = GND/Open J6 3 Bank 1 = Left Supply/Open, Right = GND/Open J7 3 Bank 2 = Right Supply/Open, Left = GND/Open J10 3 Bank 3 = Right Supply/Open, Left = GND/Open J9 ON VDD Link FOR HI 8436 and LED supply current (disconnect and use ammeter to measure HI 8436 supply current, after removing LED jumper) SW1 POSITION DESCRIPTION 1 8 All ON Sensor input for Bank0, Sensors 0 7 SW2 POSITION DESCRIPTION 1 8 All ON Sensor input for Bank1, Sensors 8 15 SW3 POSITION DESCRIPTION 1 8 All ON Sensor input for Bank2, Sensors SW4 POSITION DESCRIPTION 1 8 All ON Sensor input for Bank3, Sensorsĥ SPI Board JP POSITION DESCRIPTION 1 Open 2 Open 3 ON VDD to daughter board 4 Open 5 Open 6 Open 7 Open SW1 POSITION DESCRIPTION 1 ON BITR0 2 ON BITR1 3 ON BITR2 4 ON Mode0 5 Open Mode1 6 Open Mode2 SW2 POSITION DESCRIPTION 1 ON Opt1 2 ON Opt2 3 ON 4 Open Master Reset 5Ħ Initial Board Set up 1. CD with HI 8436 Users Guide and example source code. HI 8436 Evaluation Board (daughter card). General Purpose SPI Evaluation board (MCU board). New HOLT INTEGRATED CIRCUITS 2 Sept 2013ģ KIT CONTENTS This User Guide. Additional support material is provided on CD ROM. This guide summarizes how to set up and get running quickly. The HI 8436 Evaluation Board (shown on the right in the picture below) and plugs into to the Holt General Purpose SPI board, shown on the left below. A Serial UART output from the MCU provides debug and data messages to be sent to a PC using any terminal emulation program such as HyperTerminal. The mother board MCU uses an SPI interface to communicate with the HI Switches and LEDs help navigate the operating modes and confirm data and status information. The Holt CD, included with the evaluation kit, contains example source code, providing an easy path for the customer to develop their own control software. The EVM (Evaluation Module) plugs into a Holt General Purpose SPI Evaluation Board, based on a 16 bit, Freescale MC9S12XDT512 microcontroller. The sensor input thresholds are programmable from 0.4V to 5.2V. The board and the HI 8436 run from a single 3.3V ±5% supply voltage. To a large extent these numbers can used interchangeably, as the devices differ only in the input sensor thresholds. The Holt HI 8436 Evaluation Board was originally designed for the HI 8435 because of this there are references to HI 8435 support material. Tel: Fax: Web: User Guide Sept,Ģ INTRODUCTION This board demonstrates the features of the HI Sensor IC. Evaluation Board Madero, Mission Viejo, CA USA. 1 HI Sensor Array with Ground/Open or Supply/Open Sensors and SPI interface.
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