SAM3SD8B Atmel Corporation, SAM3SD8B Datasheet - Page 10

• Manufacturer Part Number: SAM3SD8B
• Manufacturer: Atmel Corporation

Table 3-1.
Note:
10
Signal Name
TWDx
TWCKx
ADVREF
AD0 - AD14
ADTRG
DAC0 - DAC1
DACTRG
PGMEN0-PGMEN2
PGMM0-PGMM3
PGMD0-PGMD15
PGMRDY
PGMNVALID
PGMNOE
PGMCK
PGMNCMD
DDM
DDP
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-M3 Core is not in debug mode. Thus the internal pull-up corresponding to this
SAM3S8/SD8
PIO line must be enabled to avoid current consumption due to floating input.
Signal Description List (Continued)
Function
TWIx Two-wire Serial Data
TWIx Two-wire Serial Clock
ADC, DAC and Analog Comparator
Reference
Analog Inputs
ADC Trigger
Analog output
DAC Trigger
Programming Enabling
Programming Mode
Programming Data
Programming Ready
Data Direction
Programming Read
Programming Clock
Programming Command
USB Full Speed Data -
USB Full Speed Data +
Fast Flash Programming Interface - FFPI
12-bit Analog-to-Digital Converter - ADC
12-bit Digital-to-Analog Converter - DAC
Two-Wire Interface- TWI
USB Full Speed Device
Analog
Analog,
Analog,
Analog,
Analog
Output
Output
Digital
Digital
Digital
Type
Input
Input
Input
Input
Input
Input
Input
I/O
I/O
I/O
Active
Level
High
Low
Low
Low
VDDIO
reference
Voltage
VDDIO
VDDIO
VDDIO
VDDIO
Comments
Reset State:
- USB Mode
- Internal Pull-down
11090A–ATARM–10-Feb-12
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