MIKROE-80

user's guide to Expand development system capabilities by adding 12bit Digital to Analog Converter 12bit-DAC TO OUR VALUED CUSTOMERS I want to express my thanks to you for being interested in our products and for having confidence in Mikroelektronika. The primary aim of our company is to design and produce high quality electronic products and to constantly improve the performance thereof in order to better suit your needs. Nebojsa Matic General Manager The Microchip, Atmel, NXP and CYPRESS name, logo and products names are trademarks of Microchip, Atmel, NXP and CYPRESS Inc. in the U.S.A. and other countries. Table of Contents Introduction to 12bit-DAC 4 Key features 4 System Specification 5 1. Connecting with development system 6 2. DIP switch settings 7 3. Connecting 12bit-DAC with analog device 8 4. Jumper settings for reference voltage 9 5. Schematic 10 6. Dimensions 11 Page 3 Introduction to 12bit-DAC Accessory board is designed for usage with various development systems and other MCU device with 2x5 header. 12bit -DAC additional board is designed for Digital to Analog Conversion. To communicate with MCU accessory board use serial SPI interface. 01 02 Key features 03 04 01 Pads with female 2x5 header on back side of the board 05 02 DIP switch for pin selection 03 MCP4921 chip 04 Two pole screw terminal CN2 05 Jumpers for selecting reference voltage Page 4 System Specification power supply 3.3V to 5V DC depends on development system in use power consumption max 50mA ( current at supply pins) board dimensions 49.59 x 23.88mm (1.95 x 0.94“) weight ~9g (0.02 lbs) Page 5 1. Connecting with development system Figure 1-1: 12bit-DAC connected to development system Figure 1-2: Connecting 12bit-DAC 12bit-DAC is designed for connection with 2x5 male headers on development system port’s via 2x5 female header on accessory board. Every pin on 2x5 female header is marked so for proper orientation just compare marks between accessory board and development system. Page 6 2. DIP switch settings In order to connect 12bit-DAC to different development system it is necessary to make settings on DIP switch SW1. Every pin on DIP switch SW1 is connected to different pin of 2x5 female header. In table 1 is given list which switch on DIP switch SW1 should be turned ON for different development system. Figure 2-1: DIP switch with 2x5 female header Table 1 Development system: Turn ON switch number: Pin on female 2x5 header: Pin function: EasyPIC, BIGPIC, LV18F, Easy LV18F, Easy 24-33 4 P3 SCK Easy dsPIC 1 P3 MOSI BIGdsPIC, dsPIC PRO, EasyARM 5 P4 SCK EasyPIC, BIGPIC, LV18F, Easy LV18F, Easy 24-33, EasyAVR6, Easy 8051 2 P5 MOSI BIGdsPIC, dsPIC PRO, EasyARM 3 P6 MOSI EasydsPIC 3 P6 SCK EasyAVR, Easy 8051 7 P7 SCK All development systems 8 P1 CS Page 7 3. Connecting 12bit-DAC with analog device Figure 3-1: 12bit-DAC connected with other device via wire GND In order to connect 12bit-DAC accessory board with analog device it is necessary to provide twisted wires or shielded cable which is good choice if cable goes thru electrically noisy environment. Page 8 VOUT Figure 3-2: 12bit-DAC screw terminal pinout 4. Jumper settings for reference voltage Figure 4-1: Ref. voltage is 4.096V Figure 4-2: Ref. voltage is VCC In order to set reference voltage (Vref) it is necessary to place jumper J1 in adequate position. To use reference voltage of 4.096V place jumper J1 to 4.096 position, Figure 4-1. For VCC reference voltage (3.3V or 5V depends on development system in use) place jumper J1 in VCC position, Figure 4-2. Page 9 5. Schematic VCC P4 P6 VCC VCC REF1 VIN GND VOUT P1 P3 P5 P7 P3 P5 P6 P3 P4 P6 P7 P1 R1 VCC E1 10uF VCC SW1 Vref 4.096V 100 MCP1541 CN1 J1 C1 100nF U1 MOSI CS SCK SCK MOSI CS VCC CS SCK SDI MCP4921 Figure 5-1: Connection schematic Page 10 CN2 VOUT GND Vref LDAC R2 10K 6. Dimensions 23.88mm(0.94'’) 16.36mm(0.64'’) 49.59mm(1.95'’) 7.51mm(0.30'’) Figure 6-1: Dimensions Page 11 Notes: Page 12 Notes: Page 13 Notes: Page 14 DISCLAIMER All the products owned by MikroElektronika are protected by copyright law and international copyright treaty. Therefore, this manual is to be treated as any other copyright material. No part of this manual, including product and software described herein, may be reproduced, stored in a retrieval system, translated or transmitted in any form or by any means, without the prior written permission of MikroElektronika. The manual PDF edition can be printed for private or local use, but not for distribution. Any modification of this manual is prohibited. MikroElektronika provides this manual ‘as is’ without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties or conditions of merchantability or fitness for a particular purpose. MikroElektronika shall assume no responsibility or liability for any errors, omissions and inaccuracies that may appear in this manual. In no event shall MikroElektronika, its directors, officers, employees or distributors be liable for any indirect, specific, incidental or consequential damages (including damages for loss of business profits and business information, business interruption or any other pecuniary loss) arising out of the use of this manual or product, even if MikroElektronika has been advised of the possibility of such damages. MikroElektronika reserves the right to change information contained in this manual at any time without prior notice, if necessary. HIGH RISK ACTIVITIES The products of MikroElektronika are not fault – tolerant nor designed, manufactured or intended for use or resale as on – line control equipment in hazardous environments requiring fail – safe performance, such as in the operation of nuclear facilities, aircraft navigation or communication systems, air traffic control, direct life support machines or weapons systems in which the failure of Software could lead directly to death, personal injury or severe physical or environmental damage (‘High Risk Activities’). MikroElektronika and its suppliers specifically disclaim any expressed or implied warranty of fitness for High Risk Activities. TRADEMARKS The Mikroelektronika name and logo, the Mikroelektronika logo, mikroC, mikroC PRO, mikroBasic, mikroBasic PRO, mikroPascal, mikroPascal PRO, AVRflash, PICflash, dsPICprog, 18FJprog, PSOCprog, AVRprog, 8051prog, ARMflash, EasyPIC5, EasyPIC6, BigPIC5, BigPIC6, dsPIC PRO4, Easy8051B, EasyARM, EasyAVR5, EasyAVR6, BigAVR2, EasydsPIC4A, EasyPSoC4, EasyAVR Stamp LV18FJ, LV24-33A, LV32MX, PIC32MX4 MultiMedia Board, PICPLC16, PICPLC8 PICPLC4, SmartGSM/GPRS, UNI-DS are trademarks of Mikroelektronika. All other trademarks mentioned herein are property of their respective companies. All other product and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies, and are only used for identification or explanation and to the owners’ benefit, with no intent to infringe. © Mikroelektronika™, 2011, All Rights Reserved. Page 15 12bit-DAC v1.30 If you want to learn more about our products, please visit our website at www.mikroe.com If you are experiencing some problems with any of our products or just need additional information, please place your ticket at www.mikroe.com/en/support If you have any questions, comments or business proposals, do not hesitate to contact us at office@mikroe.com Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: mikroElektronika: MIKROE-80