ATA6620N-TASY Atmel, ATA6620N-TASY Datasheet - Page 9

• Manufacturer Part Number: ATA6620N-TASY
• Description: RF Wireless Misc LIN SBC
• Manufacturer: Atmel

Specifications of ATA6620N-TASY

• Package / Case: SOIC
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 4-5.
4.2.3
4850I–AUTO–09/09
Wake Up from Sleep/Silent Mode at an Insufficient Falling Edge at Pin LIN
LIN Bus
LIN Wake-up Diagram from Sleep Mode
NRES
VCC
RXD
TXD
EN
If the ATA6620N is in Sleep mode or Silent mode and the voltage at the LIN Bus falls to a value
lower than VLINL < V
than 0.6
internal NMOS- transistor connected to the pin TXD is switched on and pulls down the pin TXD
to Ground. The following figure shows the corresponding diagram for the wake-up from silent
mode. The wake-up process from Sleep mode works analogue to this.
Bus wake-up filtering time
Low or floating
Node in sleep mode
Low or floating
V
S
Off state
, then a wake up is detected and the circuit switches to pre-normal mode and the
VLIN < 0.4 V
t
bus
S
– 3.3V (see
S
Regulator wake-up time
“Electrical Characteristics”
Reset
time
Pre-normal Mode
Microcontroller start-up
On state
Low
time delay
numbers 9.5 and 9.6) but higher
EN High
Normal Mode
ATA6620N
9