ATA6622-PGQW Atmel, ATA6622-PGQW Datasheet - Page 8

• Manufacturer Part Number: ATA6622-PGQW
• Description: TXRX LIN BUS REG WATCHDOG 20-QFN
• Manufacturer: Atmel
• Type: Transceiverr

Specifications of ATA6622-PGQW

• Number Of Drivers/receivers: 1/1
• Protocol: LIN
• Voltage - Supply: 5 V ~ 27 V
• Mounting Type: Surface Mount
• Package / Case: 20-QFN Exposed Pad
• Processor Series: ATA6x
• Core: AVR8
• Data Bus Width: 8 bit
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.1
4.2
8
Normal Mode
Silent Mode
Atmel ATA6622/ATA6624/ATA6626
This is the normal transmitting and receiving mode of the LIN Interface in accordance with the
LIN specification LIN 2.x. The voltage regulator is active and can source up to 85mA. The
undervoltage detection is activated. The watchdog needs a trigger signal from NTRIG to avoid
resets at NRES. If NRES is switched to low, the IC changes its state to Fail-safe Mode.
A falling edge at EN when TXD is high switches the IC into Silent Mode. The TXD Signal has
to be logic high during the Mode Select window (see
path is disabled in Silent Mode. The overall supply current from V
I
The internal slave termination between the LIN pin and the VS pin is disabled in Silent Mode,
only a weak pull-up current (typically 10µA) between the LIN pin and the VS pin is present.
Silent Mode can be activated independently from the actual level on the LIN, WAKE, or KL_15
pins.
If an undervoltage condition occurs, NRES is switched to low, and the IC changes its state to
Fail-safe Mode.
A voltage less than the LIN Pre_Wake detection VLINL at the LIN pin activates the internal LIN
receiver and switches on the internal slave termination between the LIN pin and the V
Figure 4-2.
VSsi
= 57µA plus the VCC regulator output current I
NRES
VCC
TXD
LIN
EN
Normal Mode
Switch to Silent Mode
LIN switches directly to recessive mode
t
d
Delay time silent mode
_silent = maximum 20µs
t
d
= 3.2µs
Mode select window
VCC
Figure 4-2 on page
.
Silent Mode
Batt
is a combination of the
8). The transmission
4986J–AUTO–03/11
S
pin.