Texas Instruments BQ27620, Руководство пользователя, Страница: 9 / 15

EV2300 or EV2400
USB
H
D
Q
I2
C
S
M
B
LOAD
CHARGER
Battery
Pack
T
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Operation
Figure 6. bq27620 Circuit Module Connection to Pack and System Load/Charger
7.2 PC Interface Connection
The following steps configure the hardware for interface to the PC.
1. Connect the bq27620-based EVM to the EV2300 using wire leads as shown in Table 4 .
2. Connect the PC USB cable to the EV2300 and the PC USB port.
Table 4. Circuit Module to EV2300/EV2400 Connections
bq27620EVM EV2300
SDA SDA
SCL SCL
VSS GND
The bq27620EVM is now set up for operation.
8 Operation
This section details the operation of the bq27620 EVSW software.
8.1 Starting the Program
Run bq27620 EVSW from the Start | Programs | Texas Instruments | bq Evaluation Software menu
sequence. The DataRAM screen (
Figure 7 ) appears. Data begins to appear once the < Refresh > (single
time scan) button is clicked, or when the < Keep Scanning > check box is checked. To disable the scan
feature, deselect < Keep Scanning > .
The continuous scanning period can be set with the | Options | and | Set Scan Interval | menu selections.
The range for this interval is 0 ms to 65,535 ms. Only items that are selected for scanning are scanned
within this period.
9 SLUU655 – October 2011 bq27620 EVM: Single-Cell Impedance Track Technology
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