参数资料
| 型号： | ATAVRSB201 |
| 厂商： | Atmel |
| 文件页数： | 3/10页 |
| 文件大小： | 0K |
| 描述： | KIT REF FOR AVR SMART BATTERY |
| 产品培训模块： | MCU Product Line Introduction megaAVR Introduction |
| 标准包装： | 1 |
| 系列： | AVR® |
| 主要目的： | 电源管理，电池充电器 |
| 嵌入式： | 是，MCU，8 位 |
| 已用 IC / 零件： | ATmega16HVA |
| 主要属性： | 1 ~ 4 芯锂离子电池，8.4V，880mA |
| 已供物品： | 板 |
AVR455
Name
PV1R
PV2R
PA0
PA1
PB0
PC0
Description
Cell1 positive input.
Cell2 positive input.
PA0 pin.
PA1 pin.
PB0 pin.
PC0 pin. Used for 1-wire SW-UART. Includes ESD protection.
Table 2-2. Signals that can be found on the 2x2 pin header holes.
Name
C1BO
C2BO
VREF
VGND
Description
Cell1 Balancing On input.
Cell2 Balancing On input.
VREF.
VREF ground.
ISP programming via SPI interface. Table 2-3 shows connections. Alternative pin
names are also noted.
Table 2-3. ISP connector (J111) signals
Name
MISO
VCC
SCK
MOSI
RESET
GND
Pin no
1
2
3
4
5
6
Description
Serial data out. (PB3)
Supply voltage
Serial clock. (PB1)
Serial data in. (PB2).
Reset signal (active low)
Ground
2.2.1 Polarity safety FET
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.
2.2.2 Board ID system
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.
3
8131A-AVR-10/08
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