ATA6616(2012) データシートの表示（PDF） - Atmel Corporation

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ATA6616
(Rev.:2012)

8K/16K Flash Microcontroller with LIN Transceiver, 5V Regulator and Watchdog

Atmel Corporation 

Atmel ATA6616/ATA6617

3.4 Modes of Operation

Figure 3-2. Modes of Operation

b

e

Unpowered Mode

VBatt = 0V

b

a

Fail-safe Mode

VCC: 5V

With undervoltage monitoring

Communication: OFF

Watchdog: ON

a: VS > 5V

b: VS < 4V

c: Bus wake-up event

d: Wake up from WAKE or KL_15 pin

e: NRES switches to low

b

b

c+d+e

EN = 1

Normal Mode

VCC: 5V

With undervoltage

monitoring

Communication: ON

Watchdog: ON

EN = 0

TXD = 1

EN = 1

EN = 0

TXD = 0

Go to silent command

Local wake-up event

Go to sleep command

EN = 1

c+d

Silent Mode

VCC: 5V

With undervoltage monitoring

Communication: OFF

Watchdog: OFF

Sleep Mode

VCC: switched off

Communication: OFF

Watchdog: OFF

3.4.1

Table 3-1. Modes of Operation

Mode of

Operation Transceiver VCC Watchdog

WD_OSC

Fail-safe

Off

5V

On

1.23V

Normal

On

5V

On

1.23V

Silent

Off

5V

Off

0V

Sleep

Off

0V

Off

0V

INH

RXD

LIN

High,

On except after Recessive

wake up

On

LIN

TXD

depending depending

Off

High

Recessive

Off

0V

Recessive

Normal Mode

This is the normal transmitting and receiving mode of the LIN interface in acoordance with the

LIN specification LIN 2.x. The voltage regulator is active and can source up to 85mA. 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.

9

9132F–AUTO–02/12

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