Connecting the EVM
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4.3
Quick Check
The first step in communicating with the bq76PL536A is to set a unique address for each device in a
stack. This is required even if you are only using a single device. This occurs automatically when the
Evaluation software is first started. To do this manually, select COMMAND | AUTO ADDRESS (shortcut
key CTRL + A). This will cause the software to interrogate the stack of bq76PL536A devices, find all
available devices, and assign each a unique address beginning with address 0x01. Address 0x00 is
reserved for un-addressed devices.
After addressing is complete, you should see the number of devices found and the total combined voltage
of all cells being monitoring displayed in the STACK HEIGHT and V STACK windows.
5
Evaluation Software Details
5.1
Main Screen
The main screen is divided into four major areas, plus the menu and status bars. The software is referred
to as the “Windows Graphical User Interface”, or abbreviated to WinGUI.
VBRICK
The voltage measured by the bq76PL536A between the BATx and VSS pins
VCELLn
The voltage measured between the pair of pins VCn – VCn-1 (that is, VCELL2 =
VC2 – VC1).
ADDR
Displays the address of the device being monitored in the measurement result area.
LOG DEVICE
Checking this box will add the contents of the device at this address to the log file.
TSn
The voltage measured between the TSn+ and TSn- inputs, converted by the WinGUI
to temperature based on the characteristics of the thermistor used in the EVM design.
The EVM and WinGUI are configured to measure this voltage as a ratio of REG50,
which removes any offset or gain errors introduced by drift in the REG50 output.
VIEW AS...
Shows the ratio of the measured input voltage to REG50 as a percentage.
Refresh updates the displayed measurements for this device. The conversion is
started by sending the register command CONVERT[CONV]=1, or hardware by
toggling the CONV pin if the HW IO CONTROL box is checked.
8
bq76PL536A and bq76PL536A-Q1 EVM Quick Start Guide
SLUU437D – October 2010 – Revised July 2015
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