ATA6625C-TAQY Atmel, ATA6625C-TAQY Datasheet - Page 4

• Manufacturer Part Number: ATA6625C-TAQY
• Description: TXRX LIN BUS W/VOLT REG SO8
• Manufacturer: Atmel
• Type: Transceiverr

Specifications of ATA6625C-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

3.7
3.8
3.9
3.10
4
Input Pin (TXD)
Dominant Time-out Function (TXD)
Output Pin (RXD)
Enable Input Pin (EN)
Atmel ATA6623/ATA6625
In Normal Mode the TXD pin is the microcontroller interface to control the state of the LIN out-
put. TXD must be pulled to ground in order to drive the LIN bus low. If TXD is high or
unconnected (internal pull-up resistor), the LIN output transistor is turned off and the bus is in
the recessive state.
The TXD input has an internal pull-up resistor. An internal timer prevents the bus line from
being driven permanently in the dominant state. If TXD is forced to low longer than t
the LIN bus driver is switched to the recessive state.
To reactivate the LIN bus driver, switch TXD to high (> 10µs).
This output pin reports the state of the LIN-bus to the microcontroller. LIN high (recessive
state) is reported by a high level at RXD; LIN low (dominant state) is reported by a low level at
RXD. The output has an internal pull-up resistor with typically 5k to V
tics are measured with an external load capacitor of 20pF.
The output is short-circuit protected. In Unpowered Mode (that is, V
off.
The Enable Input pin controls the operation mode of the device. If EN is high, the circuit is in
Normal Mode, with transmission paths from TXD to LIN and from LIN to RXD both active. The
VCC voltage regulator operates with 3.3V/5V/85mA output capability.
If EN is switched to low while TXD is still high, the device is forced to Silent Mode. No data
transmission is then possible, and the current consumption is reduced to I
VCC regulator has its full functionality.
If EN is switched to low while TXD is low, the device is forced to Sleep Mode. No data trans-
mission is possible, and the voltage regulator is switched off.
S
CC
= 0V), RXD is switched
. The AC characteris-
VS
typ. 57µA. The
4957I–AUTO–03/11
dom
> 6ms,