ATA6630-PGQW Atmel, ATA6630-PGQW Datasheet - Page 13

• Manufacturer Part Number: ATA6630-PGQW
• Description: TXRX LIN SBC 5V QFN
• Manufacturer: Atmel
• Type: Transceiverr

Specifications of ATA6630-PGQW

• Protocol: LIN
• Voltage - Supply: 5V
• Mounting Type: Surface Mount
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Drivers/receivers: -

4.4
9117G–AUTO–03/11
Sleep or Silent Mode: Behavior at a Floating LIN-bus or a Short Circuited LIN to GND
In Sleep or in Silent Mode the device has a very low current consumption even during
short-circuits or floating conditions on the bus. A floating bus can arise if the Master pull-up
resistor is missing, e.g., if it is switched off when the LIN- Master is in sleep mode or even if the
power supply of the Master node is switched off.
In order to minimize the current consumption I
at the LIN-pin below the LIN pre-wake threshold, the receiver is activated only for a specific
time tmon. If t
(V
changes back to sleep respectively Silent Mode. The current consumption is then I
or I
on the bus no wake-up will occur. Even if the voltage rises above the Pre-wake detection high
(V
This means the LIN-bus must be above the Pre-wake detection threshold V
microseconds before a new LIN wake-up is possible.
Figure 4-6.
Int. Pull-up
LINL
LINH
Resistor
operation
LIN BUS
Mode of
VSsilent_short
RLIN
) and higher than the LIN dominant level, the receiver is switched off again and the circuit
), the IC will stay in sleep respectively silent mode (see
I
VS
Sleep/Silent Mode
(typ. 10µA more than I
mon
Floating LIN-bus During Sleep or Silent Mode
V
V
I
VSsleep/silent
LINL
BUSdom
elapses while the voltage at the bus is lower than Pre-wake detection low
Wake-up Detection Phase
VSsleep
off (disabled)
respectively I
I
t
VSfail
mon
Atmel ATA6628/ATA6630
VS
in sleep or silent mode during voltage levels
VSsilent
Figure
I
). If a dominant state is reached
VSsleep_short /
I
VSsilent_short
Sleep/Silent Mode
4-6).
I
LIN dominant state
VSsleep/silent
LINH
LIN Pre-wake
VSsleep_short
for a few
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