Rainbow-electronics ATA6662 Manual de usuario

Busca en linea o descarga Manual de usuario para Software Rainbow-electronics ATA6662. Rainbow Electronics ATA6662 User Manual Manual de usuario

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Features
Operating Range from 5V to 27V
Baud Rate up to 20 Kbaud
Improved Slew Rate Control According to LIN Specification 2.0 and SAEJ2602-2
Fully Compatible with 3.3V and 5V Devices
Dominant Time-out Function at Transmit Data (TXD)
Normal and Sleep Mode
Wake-up Capability via LIN Bus (90 µs Dominant)
External Wake-up via WAKE Pin (35 µs Low Level)
Control of External Voltage Regulator via INH Pin
Very Low Standby Current During Sleep Mode (10 µA)
Wake-up Source Recognition
Bus Pin Short-circuit Protected versus GND and Battery
LIN Input Current Typically 5 µA if V
BAT
Is Disconnected
Overtemperature Protection
High EMC Level
Interference and Damage Protection According to ISO/CD 7637
ESD HBM 6 kV at LIN Bus Pin and Supply VS Pin
1. Description
The ATA6662 is a fully integrated LIN transceiver complying with the LIN
specification 2.0 and SAEJ2602-2. It interfaces the LIN protocol handler and the phys-
ical layer. The device is designed to handle the low-speed data communication in
vehicles, for example, in convenience electronics. Improved slope control at the LIN
bus ensures secure data communication up to 20 Kbaud with an RC oscillator for pro-
tocol handling. Sleep mode guarantees minimal current consumption. The ATA6662
has advanced EMI and ESD performance.
Figure 1-1. Block Diagram
VS
GN
D
5
6
LIN
7
1
4
RXD
TXD
WAKE
EN
3
28
INH
Short circuit and over-
temperature protection
Receiver
Filter
Wake-up bus timer
Slew rate control
TXD
time-out
timer
VS
Wake-up
timer
Standby mode
VS
Control unit
LIN Transceiver
ATA6662
Preliminary
4916E–AUTO–02/07
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Indice de contenidos

Pagina 1 - Preliminary

Features• Operating Range from 5V to 27V• Baud Rate up to 20 Kbaud• Improved Slew Rate Control According to LIN Specification 2.0 and SAEJ2602-2• Full

Pagina 2

104916E–AUTO–02/07ATA6662 [Preliminary] 7 LIN Bus Driver7.1 Driver recessive output voltage RLOAD = 500Ω/1kΩ 6VBUSrec0.9 × VSVSVA7.2Driver dominant vo

Pagina 3

114916E–AUTO–02/07ATA6662 [Preliminary]9 Internal Timers9.1Dominant time for wake-up via LIN busVLIN = 0V 6 TBUS30 90 150 µs A9.2Time of low pulse for

Pagina 4

124916E–AUTO–02/07ATA6662 [Preliminary] Figure 6-1. Definition of Bus Timing Parameter VS(Transceiver supply of transmitting node)TXD (Input to transm

Pagina 5

134916E–AUTO–02/07ATA6662 [Preliminary]Figure 6-2. Application Circuit VSVSINH8EN2RXD12V5VVBATTERYSCI5 kΩ1k100 nFATA666233 kΩ10 kΩ1Short circuit andov

Pagina 6

144916E–AUTO–02/07ATA6662 [Preliminary] 8. Package Information 7. Ordering InformationExtended Type Number Package RemarksATA6662-TAQY SO8 LIN transce

Pagina 7

154916E–AUTO–02/07ATA6662 [Preliminary]9. Revision HistoryPlease note that the following page numbers referred to in this section refer to the specifi

Pagina 8

Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise,

Pagina 9

24916E–AUTO–02/07ATA6662 [Preliminary] 2. Pin ConfigurationFigure 2-1. Pinning SO8 RXDENWAKETXDINHVSLINGND12348765Table 2-1. Pin DescriptionPin Symbol

Pagina 10 - ATA6662 [Preliminary]

34916E–AUTO–02/07ATA6662 [Preliminary]3. Functional Description3.1 Supply Pin (VS)Undervoltage detection is implemented to disable transmission if VS

Pagina 11

44916E–AUTO–02/07ATA6662 [Preliminary] 3.7 Enable Input Pin (EN)This pin controls the operation mode of the interface. If EN = 1, the interface is in

Pagina 12

54916E–AUTO–02/07ATA6662 [Preliminary]3.10 Operation Modes1. Normal modeThis is the normal transmitting and receiving mode. All features are available

Pagina 13

64916E–AUTO–02/07ATA6662 [Preliminary] 3.13 Wake-up Source RecognitionThe device can distinguish between a local wake-up request (pin WAKE) and a remo

Pagina 14

74916E–AUTO–02/07ATA6662 [Preliminary]Figure 3-2. LIN Wake-up Waveform Diagram Figure 3-3. Wake-up from Wake-up Switch Microcontroller start-updelay t

Pagina 15

84916E–AUTO–02/07ATA6662 [Preliminary] 4. Absolute Maximum RatingsStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent da

Pagina 16 - Regional Headquarters

94916E–AUTO–02/07ATA6662 [Preliminary]6. Electrical Characteristics5V < VS < 27V, Tj = –40°C to +150°CNo. Parameters Test Conditions Pin Symbol

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