ATAVRSB100 Atmel, ATAVRSB100 Datasheet - Page 6

SMART BATTERY DEVELOPMENT KIT

ATAVRSB100

Manufacturer Part Number
ATAVRSB100
Description
SMART BATTERY DEVELOPMENT KIT
Manufacturer
Atmel
Type
Smart Batteryr
Datasheet

Specifications of ATAVRSB100

Contents
Fully Assembled Evaluation Board
Processor
ATmega406
Processor To Be Evaluated
ATmega406
Data Bus Width
8 bit
Interface Type
JTAG
For Use With/related Products
ATmega406
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
Q2367281
2.1.5 Host/charger SMBus Connector (CONN1)
6
AVR454
by changing the jumping on JB4 to pins 3-5 and 4-6. It is not necessary to rewire the
CELL1- terminal to bypass the sense resistor, but this can be done if desired.
Figure 2-4. Connecting battery cells to CONN2.
If no charger is used, jumper J1 should be shorted after connecting the cells to wake
up the ATmega406 from Power-Off mode.
When using only 2 cells in series, the remaining two cell inputs should be shorted,
just as the one cell input is shorted when using only three cells.
The connections between the SB100 board and a host application or smart charger
are shown in Figure 2-5. Note that the Charger Active signal is only used by the
charger and SB100 needs at least 8V on this input to wake up from Power-Off mode.
If no Charger Active signal is available, jumper J1 could be shorted to use the battery
stack voltage for the Charger Active signal instead.
Figure 2-5. Connecting a host or a charger to CONN1
3/6/9/... cells
4/8/12/... cells
CONN2
FETs
CELL4+
CELL3+
CELL2+
CELL1+
CELL1-
Rsense
GND
Supply
(Charger Active)
~Alert
SMBus
Host/Charger
1
JB3
1
JB4
2598C-AVR-06/06
J1

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