Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet

SAM4S Series [DATASHEET]

Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14

16

Note:

1. Schmitt triggers can be disabled through PIO registers.
2. Some PIO lines are shared with system I/Os.
3. Refer to USB section of the product Electrical Characteristics for information on pull-down value in USB mode.
4. See “Typical Powering Schematics” section for restrictions on voltage range of analog cells.
5. TDO pin is set in input mode when the Cortex-M4 processor is not in debug mode. Thus the internal pull-up corresponding 

to this PIO line must be enabled to avoid current consumption due to floating input

TWDx

TWIx Two-wire Serial Data 

I/O

–

–

–

TWCKx

TWIx Two-wire Serial Clock

I/O

–

–

–

ADVREF

ADC, DAC and Analog Comparator 

Reference

Analog

–

–

–

AD0–AD14

Analog Inputs

Analog,

Digital 

–

–

–

ADTRG

ADC Trigger

Input

–

VDDIO

–

DAC0–DAC1

Analog output

Analog,

Digital

–

–

–

DACTRG

DAC Trigger

Input

–

VDDIO

–

PGMEN0-

PGMEN2

Programming Enabling

Input

–

VDDIO

–

PGMM0–PGMM3

Programming Mode

Input

–

VDDIO

–

PGMD0–PGMD15

Programming Data

I/O

–

–

PGMRDY

Programming Ready

Output

High

–

PGMNVALID

Data Direction

Output

Low

–

PGMNOE

Programming Read

Input

Low

–

PGMCK

Programming Clock

Input

–

–

PGMNCMD

Programming Command

Input

Low

–

DDM

USB Full Speed Data -

Analog,

Digital

–

VDDIO

Reset State:
- USB Mode
- Internal Pull-down

DDP

USB Full Speed Data +