Texas Instruments bq2022A User Manual
User's Guide
SLUU258B–November 2007–Revised July 2017
bq2022A Evaluation Software
The bq2022A is a 1 K-bit serial EPROM containing a factory-programmed, unique 48-bit identification
number, 8-bit CRC generation, and an 8-bit family code. A 64-bit status register controls write protection
and page redirection.
The purpose of the evaluation software is to demonstrate the functionality of the bq2022A. The bq2022A
evaluation board can be used for one or two ICs.
The bq2022A is ideal for applications such as battery pack configuration parameters, record maintenance,
asset tracking, product revision status, and access-code security.
Contents
1 Kit Contents................................................................................................................... 2
2 bq2022A-Based Circuit Module............................................................................................ 2
3 bq2022A Circuit Module Schematic....................................................................................... 3
4 Circuit Module Physical Layouts........................................................................................... 4
5 bq2022A Circuit Module List of Materials................................................................................. 8
6 bq2022AEVM Circuit Module Performance Specification Summary.................................................. 8
7 EVM Hardware and Software Setup ...................................................................................... 8
8 Software Operation ........................................................................................................ 10
1 EVM Schematic .............................................................................................................. 3
2 Silk Screen ................................................................................................................... 4
3 EVM Top Assembly ......................................................................................................... 5
4 EVM Layer One.............................................................................................................. 6
5 EVM Layer Two.............................................................................................................. 7
6 ROM CMD Page ........................................................................................................... 11
7 DATA Page ................................................................................................................. 12
1 Test Points.................................................................................................................... 2
2 List of Materials .............................................................................................................. 8
3 Performance Specification Summary ..................................................................................... 8
4 Wire Connection ............................................................................................................. 9
Trademarks
Microsoft, Windows are registered trademarks of Microsoft Corporation.
All other trademarks are the property of their respective owners.
List of Figures
List of Tables
SLUU258B–November 2007–Revised July 2017
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bq2022A Evaluation Software
1
Kit Contents
1 Kit Contents
1. bq2022A, HPA125 revision-B board
2. CD-ROM including Microsoft®Windows®based PC software and support documentation
NOTE: An EV2300 board is required to interface this EVM with the PC and can be purchased
separately.
The EV2400 up through at least version 0.18 does not support this EVM.
2 bq2022A-Based Circuit Module
The bq2022A-based circuit module is ideal for programming the 1 K-bit EPROM and the STATUS bytes of
the bq2022A IC. The circuit module includes a 3-pin SOT23 dual socket, a bq2022A IC, a Zener diode for
host protection during EPROM programming, and a programming circuit that generates a 12-V pulse when
used with a power supply and a control signal. In a typical application, only the bq2022A IC and a pullup
resistor is required.
2.1 Test Points
Test Point SIGNAL NAME DESCRIPTION
J1-1 VSS Device ground
J1-2 PROG Input for timing of EPROM programming pulse
J1-3 SDQ SDQ single-wire communication bus
J2-1 12V High voltage for EPROM programming
J2-2 VSS Programming ground
J3 Connect for EPROM programming
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Table 1. Test Points
2
bq2022A Evaluation Software
SLUU258B–November 2007–Revised July 2017
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3 bq2022A Circuit Module Schematic
The schematic shows the circuit for the bq2022AEVM implementation.
bq2022A Circuit Module Schematic
Figure 1. EVM Schematic
SLUU258B–November 2007–Revised July 2017
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bq2022A Evaluation Software
3
Circuit Module Physical Layouts
4 Circuit Module Physical Layouts
This section contains the board layout and assembly drawings for the bq2022AEVM circuit module.
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4
bq2022A Evaluation Software
Figure 2. Silk Screen
SLUU258B–November 2007–Revised July 2017
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Circuit Module Physical Layouts
Figure 3. EVM Top Assembly
SLUU258B–November 2007–Revised July 2017
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bq2022A Evaluation Software
5
Circuit Module Physical Layouts
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Figure 4. EVM Layer One
6
bq2022A Evaluation Software
SLUU258B–November 2007–Revised July 2017
Copyright © 2007–2017, Texas Instruments Incorporated
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