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PDF ATA6612 Data sheet ( Hoja de datos )
| Número de pieza | ATA6612 | |
| Descripción | Microcontroller | |
| Fabricantes | ATMEL Corporation | |
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General Features
• Single-package Fully-integrated Atmel® AVR® 8-bit Microcontroller with LIN
Transceiver, 5V Regulator and Watchdog
• Very Low Current Consumption in Sleep Mode
• 8 Kbytes/16 Kbytes Flash Memory for Application Program (ATA6612/ATA6613)
• Supply Voltage Up to 40V
• Operating Voltage: 5V to 27V
• Temperature Range: Tcase –40°C to +125°C
• QFN48, 7 mm × 7 mm Package
1. Description
ATA6612/ATA6613 is a System-in-Package (SiP) product, which is particularly suited
for complete LIN-bus slave-node applications. It supports highly integrated solutions
for in-vehicle LIN networks. The first chip is the LIN-system-basis-chip (LIN-SBC)
ATA6624, which has an integrated LIN transceiver, a 5V regulator and a window
watchdog. The second chip is an automotive microcontroller from Atmel’s series of
Atmel AVR 8-bit microcontroller with advanced RISC architecture.
The ATA6612 consists of the LIN-SBC ATA6624 and the ATmega88 with 8 Kbytes
flash. The ATA6613 consists of the LIN-SBC ATA6624 and the ATmega168 with
16 Kbytes flash. All pins of the LIN System Basis Chip as well as all pins of the Atmel
AVR microcontroller are bonded out to provide customers the same flexibility for their
applications as they have when using discrete parts.
In section 2 you will find the pin configuration for the complete SiP. In sections 3 to 5
the LIN SBC is described, and in sections 6 to 7 the Atmel AVR is described in detail.
Figure 1-1. Application Diagram
LIN Bus
Microcontroller
with LIN
Transceiver,
5V Regulator
and Watchdog
ATA6612
ATA6613
ATA6612/ATA6613
MCU
ATmega88
or
ATmega168
LIN-SBC
ATA6624
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9111G–AUTO–05/10
1 page  
ATA6612/ATA6613
3. LIN System-basis-chip Block
3.1 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 57 µA Supply Current in Silent Mode
• Linear Low-drop Voltage Regulator:
• Normal, Fail-safe, and Silent Mode
• 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
• 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 Specification 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
• TXD Time-out Timer
• Bus Pin is Overtemperature and Short Circuit Protected versus GND and Battery
• Adjustable Watchdog Time via External Resistor
• Advanced EMC and ESD Performance
• ESD HBM 8 kV at Pins LIN and VS According to STM5.1
3.2 Description
The LIN-SBC is a fully integrated LIN transceiver, which complies with the LIN 2.1 and
SAEJ2602-2 specifications. It has a low-drop voltage regulator for 5V/50 mA output and a win-
dow watchdog.
The LIN-SBC are designed to handle the low-speed data communication in vehicles, e.g., in
convenience electronics. Improved slope control at the LIN-driver ensures secure data commu-
nication up to 20 kBaud. Sleep Mode and Silent Mode guarantee very low current consumption.
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9111G–AUTO–05/10
5
5 Page 
ATA6612/ATA6613
3.3.20.1
3.3.20.2
Normal Mode
This is the normal transmitting and receiving mode at the LIN interface in accordance with the
LIN specification LIN 2.1. The voltage regulator is active and can source up to 50 mA. 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.
Silent 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 Figure 3-3 on page 11). The transmission
path is disabled in Silent Mode. The overall supply current from VBatt is a combination of the IVSsi
57 µA plus the VCC regulator output current IVCC.
The 3.3V/5V regulator with 2% tolerance can source up to 50 mA. The internal slave termination
between the LIN pin and the VS pin is disabled in Silent Mode, only a weak pull-up current
(typically 10 µA) 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 VS pin.
Figure 3-3. Switch to Silent Mode
Normal Mode
Silent Mode
EN
TXD
NRES
Mode select window
td = 3.2 µs
VCC
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LIN
Delay time silent mode
td_sleep = maximum 20 µs
LIN switches directly to recessive mode
9111G–AUTO–05/10
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ATA6612.PDF ] | |
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