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STD Fiches technique(PDF) 8 Page - Texas Instruments

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Description  bq2026 Evaluation Software
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
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STD Fiches technique(HTML) 8 Page - Texas Instruments

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Software Operation
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Table 4. Wire Connection
bq2026EVM REVA
EV2300
SDQ
HDQ
VSS
GND
PROG
VOUT
To program the EPROM of bq2026EVM, a 12-V pulse must be generated on the SDQ line. The
bq2026EVM board has an additional circuit included that permits generating this pulse when using a
power supply set to 12 V and the VOUT output of the EV2300. The evaluation software controls this pulse
for EPROM programming.
When programming the EPROM, it is expected that a 12-V supply be connected to the bq2026EVM board
at the 12-V input terminal of the bq2026EVM board. Ensure that the ground of the power supply is
connected to VSS of the board.
A jumper (J3) must be connected when using the EPROM programming circuit.
7.2.1
Normal Operation
Normal operation includes performing any of the ROM commands, reading the 1.5K-bit EPROM and
reading the EPROM Status Memory.
7.2.2
EPROM Programming
To program EPROM registers, a 12-V pulse must be sent across the SDQ line during a write command.
See the bq2026 data sheet (SLUS938) for a specific description of EPROM programming requirements.
When programming EPROM registers, the following must be ensured:
J3 jumper is connected.
VOUT output of EV2300 is connected to PROG input of bq2026EVM board.
Power supply set to 12 V is connected across the 12-V and VSS inputs of bq2026EVM board.
8
Software Operation
Run the program from the Start
→ Programs → Texas Instruments → bq2026 Evaluation Software menu
sequence.
8.1
Evaluation Software Pages
This section describes the function of each page of the evaluation program.
8.2
ROM CMD
This page provides all the ROM commands for bq2026 (see Figure 6).
8.2.1
Sections Within the ROM CMD Page
Read ROM
— The ID ROM of the device on the SDQ communication line is displayed when READ ID is
clicked.
8
bq2026 Evaluation Software
SLUU763
– December 2011
Submit Documentation Feedback
Copyright
© 2011, Texas Instruments Incorporated


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