ata6621n ATMEL Corporation, ata6621n Datasheet - Page 3

• Manufacturer Part Number: ata6621n
• Description: Lin Transceiver With 5v Regulator And Watchdog
• Manufacturer: ATMEL Corporation

2. Pin Configuration
Figure 2-1.
Table 2-1.
4887H–AUTO–12/07
Pin
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
Pinning QFN20
Pin Description
WD_OSC
Backside
Symbol
NTRIG
PTRIG
MODE
WAKE
NRES
TEMP
PVCC
GND
GND
RXD
VCC
TXD
LIN
EN
NC
NC
NC
TM
VS
Function
Enables the device into Normal mode
High-level watchdog trigger input from microcontroller; if not needed, leave open or connect to GND
High-voltage input for local wake-up request; if not needed, connect to VS
System ground
Not connected
LIN bus line input/output
Not connected
Not connected
Output undervoltage and watchdog reset
For debug mode, high watchdog off, low watchdog on
Chip temperature output pin; if not needed connect to GND
5V regulator sense input pin
5V regulator output/driver pin
Battery supply
Heat slug is connected to GND (pin 5)
Low-level watchdog trigger input from microcontroller; if not needed, leave open or connect to VCC
Receive data output
Transmit data input; active low output (strong pull down) after a local wake-up request
External resistor for adjustable watchdog timing
For factory testing only (tie to ground)
Additional ground
PTRIG
NTRIG
WAKE
GND
EN
1
2
3
4
5
20
6
MLP 5 mm
19
0.65 mm pitch
ATA6621N
7
20 lead
18
8
5 mm
17
9
16
10
15
14
13
12
11
MODE
TM
WD_OSC
NRES
TXD
ATA6621N
3