ATA6661-TAQJ 19 Atmel, ATA6661-TAQJ 19 Datasheet - Page 5

• Manufacturer Part Number: ATA6661-TAQJ 19
• Description: TXRX LIN 2.0 3.3V/5V 8SOIC
• Manufacturer: Atmel
• Type: Transceiverr

Specifications of ATA6661-TAQJ 19

• Number Of Drivers/receivers: 1/1
• Protocol: LIN
• Voltage - Supply: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: SO-8
• Number Of Transmitters: 1
• Number Of Receivers: 1
• Power Supply Requirement: Single
• Package Type: SO
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 8
• Operating Temperature (max): 125C
• Operating Temperature (min): -40C
• Dual Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Dual Supply Voltage (min): Not RequiredV
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: - 0.3 V to + 40 V
• Propagation Delay Time Ns: 6 us
• Supply Current: 1.6 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.10
3.11
3.12
3.13
4729M–AUTO–02/09
Mode of Operation
Remote Wake-up via Dominant Bus State
Wake-up Source Recognition
Local Wake-up via Pin WAKE
A falling edge at pin LIN, followed by a dominant bus level maintained for a certain time period
(t
activated (switches to V
wake-up request is indicated by a low level at pin RXD to interrupt the microcontroller (see
ure 3-2 on page
an output current of typical –3 µA.
A falling edge at pin WAKE, followed by a low level maintained for a certain time period (t
results in a local wake-up request. The extra long wake-up time (t
sient, according to ISO7637, creates a wake-up. The device switches to pre-normal mode. Pin
INH is activated (switches to V
wake-up request is indicated by a low level at pin RXD to interrupt the microcontroller and a
strong pull-down at pin TXD (see
The device can distinguish between a local wake-up request (pin WAKE) and a remote wake-up
request (dominant LIN bus). The wake-up source can be read on pin TXD in pre-normal mode. If
an external pull-up resistor (typically 5 k ) on pin TXD to the power supply of the microcontroller
has been added, a high level indicates a remote wake-up request (weak pull-down at pin TXD)
and a low level indicates a local wake-up request (strong pull-down at pin TXD).
The wake-up request flag (signalled on pin RXD) as well as the wake-up source flag (signalled
on pin TXD) are reset immediately, if the microcontroller sets pin EN to high (see
page 7
BUS
1. Normal mode
2. Sleep mode
3. Pre-normal mode
4. Unpowered mode
), results in a remote wake-up request. The device switches to pre-normal mode. Pin INH is
This is the normal transmitting and receiving mode. All features are available.
In this mode the transmission path is disabled and the device is in low power mode.
Supply current from V
WAKE will be detected and switches the device to pre-normal mode. If EN, then
switches to high, normal mode is activated. Input debounce timers at pin WAKE (t
LIN (t
sients or EMI. In sleep mode the INH pin is floating. The internal termination between
pin LIN and pin V
short-circuited to GND. Only a weak pull-up current (typical 10 µA) between pin LIN and
pin V
At system power-up, the device automatically switches to pre-normal mode. It switches
the INH pin to a high state, to the V
then confirm the normal mode by setting the EN pin to high.
In this mode the LIN transceiver is disabled. Data communication is switched off. If V
higher than V
Pre-normal mode.
and
S
BUS
Figure
is present.
) and EN (t
7). The voltage threshold for a wake-up signal is 3V below the VS voltage with
3-3).
Sth
undervoltage threshold, the IC mode change from Unpowered to
S
is disabled to minimize the power dissipation in case pin LIN is
sleep
S
) and the internal termination resistor is switched on. The remote
Batt
,t
nom
is typically 10 µA. A wake-up signal from the LIN bus or via pin
S
) and the internal termination resistor is switched on. The local
) prevent unwanted wake-up events due to automotive tran-
Figure 3-3 on page
S
level. The microcontroller of the application will
7).
WAKE
) ensures that no tran-
ATA6661
Figure 3-2 on
WAKE
S
WAKE
is
),
Fig-
),
5