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參數(shù)資料
| 型號： | ATA6670-FFQW |
| 廠商： | Atmel |
| 文件頁數(shù)： | 16/19頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX LIN DUAL 14VDFN |
| 標準包裝： | 6,000 |
| 系列： | * |
| 其它名稱： | ATA6670-FFQW-ND |
6
Atmel ATA6670 [DATASHEET]
9204F–AUTO–06/12
Figure 2-1. Operating Modes
2.12
Remote Wake-up via Dominant Bus State
A voltage lower than the LIN pre-wake detection VLINL at pin LIN activates the internal LIN receiver and starts the wake-up
detection timer.
A falling edge at pin LIN, followed by a dominant bus level VBUSdom maintained for a certain period of time (> tBUS) and a rising
edge at pin LIN results in a remote wake-up request. The transceiver switches to Fail-safe mode, at transceiver 2 the INH2
output is activated (switches to VS2) and the internal termination resistor is switched on. The remote wake-up request is
indicated by a low level at pin RXD to interrupt the microcontroller (see Figure 2-2).
Figure 2-2. LIN Wake-up Waveform Diagram
Table 2-1.
Table of Modes
Operating Mode
Transceiver
RXD
LIN
Fail-safe
Off
High, except after wake-up
Recessive
Normal
On
LIN-depending
TXD-depending
Sleep
Off
High-ohmic
Recessive
a: Power-up (V
S > 3V)
b: V
S < 5V
c: Bus wake-up event
(only Transceiver 2)
d: Wake-up from wake switch
EN = 1
and not b
c or d
bb
a
EN = 0
EN = 1
Fail-Safe Mode
Power-up
Communication: OFF
RXD: see table of Modes
Transceiver 2: INH2 switch ON if VS2 > 5V
Sleep Mode
Communication: OFF
Transceiver 2: INH2 switch OFF
Normal Mode
Communication: ON
Transceiver 2: INH2 switch ON
Local wake-up event
Go to sleep command
LIN Bus
RXD
EN
High or floating
Normal
Mode
EN High
Node in sleep state
Low
Bus wake-up filtering time
(t
BUS)
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