ATAVRSB201 Atmel, ATAVRSB201 Datasheet - Page 3

• Manufacturer Part Number: ATAVRSB201
• Description: KIT REF FOR AVR SMART BATTERY
• Manufacturer: Atmel
• Series: AVR®r

Specifications of ATAVRSB201

• Main Purpose: Power Management, Battery Charger
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ATmega16HVA
• Primary Attributes: 1 ~ 4 Cells- Li-Ion, 8.4V, 880mA
• Processor To Be Evaluated: ATmega16HVA
• Data Bus Width: 8 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

2.2.1 Polarity safety FET
2.2.2 Board ID system
8131A-AVR-10/08
Table 2-2. Signals that can be found on the 2x2 pin header holes.
ISP programming via SPI interface. Table 2-3 shows connections. Alternative pin
names are also noted.
Table 2-3. ISP connector (J111) signals
A voltage negative to ground connected on the input (charger with reverse polarity)
will pull the source of the discharge FET to negative voltage and with the ground
potential on the gate the FET will likely be turned on. Since the diode of the Charge
FET will conduct a discharge current, a large current will in this case flow out of the
battery cell(s) with the ATmega16HVA unable to stop it. A FET (Q2) on the pack input
which pulls the source of the discharge FET to the negative input voltage is included
in the design to avoid this situation. This is an optional part in a design but included in
the main area.
A board identification system is included to allow the SB200 to recognize which board
is inserted. The wiring and thus response of this is different between SB201-1 and
SB201-2. The board ID system is not relevant for stand-alone usage of the SB201 or
designs with the ATmega16HVA.
Name
PV1R
PV2R
PA0
PA1
PB0
PC0
Name
C1BO
C2BO
VREF
VGND
Name
MISO
VCC
SCK
MOSI
RESET
GND
Pin no
1
2
3
4
5
6
Description
Cell1 positive input.
Cell2 positive input.
PA0 pin.
PA1 pin.
PB0 pin.
PC0 pin. Used for 1-wire SW-UART. Includes ESD protection.
Description
Cell1 Balancing On input.
Cell2 Balancing On input.
VREF.
VREF ground.
Description
Serial data out. (PB3)
Supply voltage
Serial clock. (PB1)
Serial data in. (PB2).
Reset signal (active low)
Ground
AVR455
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