ATA6662C-TAQY Atmel, ATA6662C-TAQY Datasheet - Page 5

• Manufacturer Part Number: ATA6662C-TAQY
• Description: TXRX LIN 2.1 3.3V/5V SO8
• Manufacturer: Atmel
• Type: Transceiverr

Specifications of ATA6662C-TAQY

• Number Of Drivers/receivers: 1/1
• Protocol: LIN
• Voltage - Supply: 5 V ~ 27 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.11
4916O–AUTO–05/10
Operation Modes
Figure 3-1.
Table 3-1.
Mode of Operation
1. Normal Mode
2. Sleep Mode
3. Fail-safe Mode
4. Unpowered Mode
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 will switch the device to Fail-safe Mode. If EN then switches
to high, Normal Mode is activated. Input debounce timers at pin WAKE (t
(t
transients or EMI. In Sleep Mode the INH pin is left floating. The internal termination
between pin LIN and pin V
between pin LIN and pin V
from the actual level on pin LIN or WAKE.
At system power-up or after a wake-up event, the device automatically switches to Fail-
safe Mode. It switches the INH pin to a high state, to the V
switched off. The microcontroller of the application will then confirm the Normal Mode
by setting the EN pin to high.
If you connect battery voltage to the application circuit, the voltage at the VS pin
increases according to the block capacitor. After VS is higher than the VS undervoltage
threshold VS
Fail-safe
BUS
Normal
INH: high (INH HS switch ON)
Sleep
Communication: ON
) and EN (t
Normal Mode
Mode of Operation
Table of Modes
b
th
, the IC mode changes from Unpowered Mode to Fail-safe Mode.
sleep
EN = 1
,t
Transceiver
nom
Batt
) prevent unwanted wake-up events due to automotive
Off
On
Off
EN = 0; after 1
EN = 1
is typically 10 µA. A wake-up signal from the LIN bus or via pin
INH: high (INH internal high-side switch ON)
S
S
is present. The Sleep Mode can be activated independently
is disabled. Only a weak pull-up current (typical 10 µA)
Communication: OFF
Unpowered Mode
Go to sleep command
Local wake-up event
Fail-safe Mode
b
0 while TXD = 1
V
Batt
= 0V
a
INH
On
On
Off
d
High, except after
LIN depending
High ohmic
wake up
c
S
INH: high impedance (INH HS switch OFF)
RXD
level. LIN communication is
a: V
b: V
c: Bus wake-up event
d: Wake-up from wake switch
b
S
S
> 5V
< 5V
Communication: OFF
Sleep Mode
WAKE
ATA6662
TXD depending
Recessive
Recessive
), LIN
LIN
5