SAM4L_14 Datasheet, PDF (33/176 Pages) ATMEL Corporation – Technology for Ultra-low Power Consumption

ATSAM4L8/L4/L2
Table 3-8. Signal Descriptions List (Sheet 3 of 4)
Signal Name
Function
Type
Active
Level
Comments
A0
Channel 0 Line A
I/O
A1
Channel 1 Line A
I/O
A2
Channel 2 Line A
I/O
B0
Channel 0 Line B
I/O
B1
Channel 1 Line B
I/O
B2
Channel 2 Line B
I/O
CLK0
Channel 0 External Clock Input
Input
CLK1
Channel 1 External Clock Input
Input
CLK2
Channel 2 External Clock Input
Input
Two-wire Interface - TWIMS0, TWIMS1, TWIM2, TWIM3
TWCK
Two-wire Serial Clock
I/O
TWD
Two-wire Serial Data
I/O
Universal Synchronous Asynchronous Receiver Transmitter - USART0, USART1, USART2, USART3
CLK
Clock
I/O
CTS
Clear To Send
Input
Low
RTS
Request To Send
Output
Low
RXD
Receive Data
Input
TXD
Transmit Data
Output
USB 2.0 Interface - USBC
DM
USB Full Speed Interface Data -
I/O
DP
USB Full Speed Interface Data +
I/O
Power
GND
Ground
Ground
GNDANA
Analog Ground
Ground
VDDANA
Analog Power Supply
Power
Input
1.68V to 3.6V
VDDCORE
Core Power Supply
Power
Input
1.68V to 1.98V
VDDIN
Voltage Regulator Input
Power
Input
1.68V to 3.6V
VDDIO
I/O Pads Power Supply
Power
Input
1.68V to 3.6V. VDDIO must
always be equal to or lower than
VDDIN.
VDDOUT
Voltage Regulator Output
Power
Output
1.08V to 1.98V
General Purpose I/O
33
42023GS–SAM–03/2014