|
|
PDF ATA6628 Data sheet ( Hoja de datos )
| Número de pieza | ATA6628 | |
| Descripción | LIN Bus Transceiver | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ATA6628 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
Features
• Master and Slave Operation Possible
• Supply Voltage up to 40V
• Operating voltage VS = 5V to 27V
• Typically 10 µA Supply Current During Sleep Mode
• Typically 40 µA Supply Current in Silent Mode
• Linear Low-drop Voltage Regulator:
– Normal, Fail-safe, and Silent Mode
• ATA6628 VCC = 3.3V ±2%
• ATA6630 VCC = 5.0V ±2%
– In Sleep Mode VCC is Switched Off
• VCC- Undervoltage Detection (4 ms Reset Time) and Watchdog Reset Logical
Combined at Open Drain Output NRES
• High-speed Mode Up to 115 kBaud
• Internal 1:6 Voltage Divider for VBattery Sensing
• Negative Trigger Input for Watchdog
• Boosting the Voltage Regulator Possible with an External NPN Transistor
• LIN Physical Layer According to LIN 2.0, 2.1 and SAEJ2602-2
• Wake-up Capability via LIN-bus, Wake Pin, or Kl_15 Pin
• INH Output to Control an External Voltage Regulator or to Switch off the Master Pull Up
Resistor
• Bus Pin is Overtemperature and Short-circuit Protected versus GND and Battery
• Adjustable Watchdog Time via External Resistor
• Advanced EMC and ESD Performance
• Fulfills the OEM “Hardware Requirements for LIN in Automotive Applications Rev.1.1”
• Interference and Damage Protection According ISO7637
• Package: QFN 5 mm × 5 mm with 20 Pins
LIN Bus
Transceiver
with 3.3V (5V)
Regulator and
Watchdog
ATA6628
ATA6630
Preliminary
1. Description
The ATA6628 is a fully integrated LIN transceiver, which complies with the LIN 2.0,
2.1 and SAEJ2602-2 specifications. It has a low-drop voltage regulator for
3.3V/50 mA output and a window watchdog. The ATA6630 has the same functionality
as the ATA6628; however, it uses a 5V/50 mA regulator. The voltage regulator is able
to source 50 mA, but the output current can be boosted by using an external NPN
transistor. This chip combination makes it possible to develop inexpensive, simple, yet
powerful slave and master nodes for LIN-bus systems. ATA6628/ATA6630 are
designed to handle the low-speed data communication in vehicles, e.g., in conve-
nience electronics. Improved slope control at the LIN-driver ensures secure data
communication up to 20 kBaud. Sleep Mode and Silent Mode guarantee very low cur-
rent consumption.
www.DataSheet4U.com
9117E–AUTO–07/10
1 page  
ATA6628/ATA6630 [Preliminary]
3.7 Input/Output Pin (TXD)
In Normal Mode the TXD pin is the microcontroller interface used to control the state of the LIN
output. TXD must be pulled to ground in order to have a low LIN-bus. If TXD is high or not
connected (internal pull-up resistor), the LIN output transistor is turned off, and the bus is in
recessive state. During Fail-safe Mode, this pin is used as output and is signalling the fail-safe
source. It is current-limited to < 8 mA.
3.8 TXD Dominant Time-out Function
The TXD input has an internal pull-up resistor. An internal timer prevents the bus line from being
driven permanently in dominant state. If TXD is forced to low for longer than tDOM > 27 ms, the
LIN-bus driver is switched to recessive state. Nevertheless, when switching to Sleep Mode, the
actual level at the TXD pin is relevant.
To reactivate the LIN bus driver, switch TXD to high (> 10 µs).
3.9 Output Pin (RXD)
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 5 kΩ to PVCC. The AC characteristics
can be defined with an external load capacitor of 20 pF.
The output is short-circuit protected. RXD is switched off in Unpowered Mode (i.e., VS = 0V).
During Fail-safe Mode it is signalling the fail-safe source.
3.10
Enable Input Pin (EN)
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/50 mA output capability.
If EN is switched to low while TXD is still high, the device is forced to Silent Mode. No data trans-
mission is then possible, and the current consumption is reduced to IVS typ. 40 µA. The 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 transmis-
sion is possible, and the voltage regulator is switched off.
3.11
Wake Input Pin (WAKE)
The WAKE Input pin is a high-voltage input used to wake up the device from Sleep Mode or
Silent Mode. It is usually connected to an external switch in the application to generate a local
wake-up. A pull-up current source, typically 10 µA, is implemented.
If a local wake-up is not needed in the application, connect the WAKE pin directly to the VS pin.
3.12 Mode Input Pin (MODE)
www.DataSheet4U.com
Connect the MODE pin directly or via an external resistor to GND for normal watchdog opera-
tion. To debug the software of the connected microcontroller, connect MODE pin to PVCC and
the watchdog is switched off.
Note: If you do not use the watchdog, connect pin MODE directly to PVCC.
9117E–AUTO–07/10
5
5 Page 
ATA6628/ATA6630 [Preliminary]
4.3 Sleep Mode
A falling edge at EN when TXD is low switches the IC into Sleep Mode. The TXD Signal has to
be logic low during the Mode Select window (Figure 4-4 on page 11). In order to avoid any influ-
ence to the LIN-pin during switching into sleep mode it is possible to switch the EN up to 3.2 µs
earlier to Low than the TXD. Therefore, the best an easiest way are two falling edges at TXD
and EN at the same time. The transmission path is disabled in Sleep Mode. The supply current
IVSsleep from VBatt is typically 10 µA.
The INH output, the PV output and the VCC regulator are switched off. NRES and RXD are low.
The internal slave termination between the LIN pin and VS pin is disabled to minimize the
current consumption in the event that the LIN pin is short-circuited to GND. Only a weak pull-up
current (typically 10 µA) between the LIN pin and the VS pin is present. Sleep Mode can be
activated independently from the current level on the LIN, WAKE, or KL_15 pin.
A voltage less than the LIN Pre_Wake detection VLINL at the LIN pin activates the internal LIN
receiver and starts the wake-up detection timer.
Figure 4-4. Switch to Sleep Mode
Normal Mode
Sleep Mode
EN
TXD
NRES
VCC
LIN
Mode select window
td = 3.2 µs
Delay time sleep mode
td_sleep = maximum 20 µs
LIN switches directly to recessive mode
www.DataSheet4U.com
9117E–AUTO–07/10
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ATA6628.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ATA6620 | LIN ABUS TRANSCEIVER | ATMEL Corporation |
| ATA6621 | LIN Transceiver | ATMEL Corporation |
| ATA6622 | (ATA6622 - ATA6626) LIN Bus Transceiver | ATMEL Corporation |
| ATA6623 | (ATA6623 / ATA6625) LIN Bus Transceiver | ATMEL Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |