ata6616 ATMEL Corporation, ata6616 Datasheet - Page 9

• Manufacturer Part Number: ata6616
• Description: Microcontroller With Lin Transceiver, 5v Regulator And Watchdog
• Manufacturer: ATMEL Corporation

3.4
Figure 3-2.
3.4.1
9132A–AUTO–10/08
DRAFT
VCC: With undervoltage
Modes of Operation
Communication: ON
Normal Mode
Watchdog: ON
Normal Mode
monitoring
Modes of Operation
b
Table 3-1.
This is the normal transmitting and receiving mode. The voltage regulator is in Normal Mode and
can source 50 mA. The undervoltage detection is activated. The watchdog needs a trigger sig-
nal from NTRIG to avoid resets at NRES. If NRES is switched to low, the IC changes its state to
Fail-safe Mode.
Operation
Mode of
Fail-safe
e
Normal
EN = 1
Silent
Sleep
TXD = 1
TXD = 0
EN = 0
EN = 1
EN = 0
VCC: With undervoltage monitoring
Transceiver
Table of Modes
Communication: OFF
Off
On
Off
Off
Go to silent command
Go to sleep command
Local wake-up event
Unpowered Mode
Fail-safe Mode
Watchdog: ON
b
V
Batt
= 0V
VCC
5V
5V
5V
0V
a
ATA6616/ATA6617 [Preliminary]
Watchdog
Off
On
On
Off
EN = 1
c + d
Communication: OFF
VCC: switched off
b
Watchdog: OFF
WD_OSC
Sleep Mode
1.23V
1.23V
c + d + e
0V
0V
VCC: With undervoltage
a: V
b: V
c: Bus wake-up event
d: Wake up from WAKE or KL_15 pin
e: NRES switches to low
Communication: OFF
b
Watchdog: OFF
S
S
Silent Mode
> 5V
< 4V
monitoring
INH
On
On
Off
Off
except after
depending
wake up
High,
RXD
TXD
High
0V
Recessive
depending
Recessive
Recessive
TXD
LIN
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