ABX8XX-I2C-EVK ABRACON

2 Faraday, Suite B Irvine, CA-92618 Tel: (949) 546-8000 Fax: (949) 546-8001 Tech-Support abracon.com ABX8X5 Real Time Clock Family The ABX8XX Evaluation Kit provides all of the tools needed to assess the complete feature set in the ultra-low power AB08X5 and AB18X5 product families. The ABX8XX EVK is designed for easy integration via an I2C or SPI serial interface with microcontroller development kits or with custom boards. The ABX8XX EVK may be used for both initial evaluation and product development. This document provides an overview of the ABX8XX EVK and serves as a users guide for fast setup. An image of the EVK development board is shown below. The ABX8XX EVK Development Board The versions of the ABX8XX EVK utilize the same printed circuit board but have different population options and support either I2C or SPI bus communication. The ABX8XX-I2C -EVK supports I2C communication. The ABX8XX- SPI-EVK supports SPI communication. The orderable part numbers are as follows: Orderable Part Number AB18X5 Device Notes ABX8XX-I2C-EVK AB1805 I2C EVK Version ABX8XX-SPI-EVK AB1815 SP EVK Version The ABX8XX-I2C-EVK and ABX8XX-SPI-EVK versions are populated with the AB1805 and AB1815 devices, respectively Abracon LLC (www.abracon.com) Page (1) of (27) 2 Faraday, Suite B Irvine, CA-92618 Tel: (949) 546-8000 Fax: (949) 546-8001 Tech-Support abracon.com Table of Contents 1. Kit Contents ..................................................................................................................................................................... 3 2. ABX8XX EVK Overview ............................................................................................................................................... 3 3. Component Locations ...................................................................................................................................................... 5 4. Connector Pin-outs and Probe Points .............................................................................................................................. 9 5. VCC and VBAT Current Measurements with SW1 and SW2 ...................................................................................... 12 6. VBAT Backup Power .................................................................................................................................................... 13 7. External 32kHz Clock ................................................................................................................................................... 13 8. Debug LED ................................................................................................................................................................... 13 9. Installation Guide .......................................................................................................................................................... 13 9.1. Hardware Setup .............................................................................................................................................. 13 9.2. Hardware Setup .............................................................................................................................................. 14 9.3. Measuring Current Consumption of the ABX8XX EVK ............................................................................... 14 9.4. Measuring Frequency Accuracy of the ABX8XX EVK ................................................................................ 16 10. Schematics and Component List ................................................................................................................................... 17 11. Component Installation Differences .............................................................................................................................. 24 12. Notes .............................................................................................................................................................................. 25 13. ABRACON LLC TERMS & CONDITIONS OF SALE ........................................................................................... 25 Table of Tables Table 1. Top Side Board Component Descriptions ........................................................................................................ 5 Table 2. Bottom Side Board Component Descriptions................................................................................................... 7 Table 3. 24-pin (2x12) Connector Pin Names and Descriptions .................................................................................. 10 Table 4. ABX8XX-I2C-EVK Component List ............................................................................................................ 22 Table 5. ABX8XX-SPI-EVK Component List ............................................................................................................. 23 Table 6. Component Installation Differences ............................................................................................................... 24 Table of Figures Figure 1 AB18X5 EVK Block Diagram ......................................................................................................................... 4 Figure 2. EVK Board Top Side Components ................................................................................................................. 5 Figure 3. EVK Board Bottom Side Components ........................................................................................................... 6 Figure 4. Top Component Locations .............................................................................................................................. 7 Figure 5. Bottom Component Locations ........................................................................................................................ 8 Figure 6. 24-pin Header connector Pin-out .................................................................................................................... 9 Figure 7. 5 x 5 Test point Array Pin-out ....................................................................................................................... 11 Figure 8. VCC and VBAT Current Measurement ........................................................................................................ 12 Figure 9. ABX8XX-I2C-EVK Schematic Page 1 ........................................................................................................ 18 Figure 10. ABX8XX-I2C-EVK Schematic Page 2 ...................................................................................................... 19 Figure 11. ABX8XX-SPI-EVK Schematic Page 1 ....................................................................................................... 20 Figure 12. ABX8XX-SPI-EVK Schematic Page 2....................................................................................................... 21 Abracon LLC (www.abracon.com) Page (2) of (27)