ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 1123

• Manufacturer Part Number: ATSAM3U-EK
• Description: KIT EVAL FOR AT91SAM3U CORTEX
• Manufacturer: Atmel
• Type: MCUr

Specifications of ATSAM3U-EK

• Contents: Board
• Processor To Be Evaluated: SAM3U
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3 V
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: SAM3U4E
• Silicon Family Name: SAM3U
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT91SAM3U
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

43.7.0.1
Table 43-37. Analog Inputs
Note:
43.7.0.2
6430D–ATARM–25-Mar-11
Parameter
Input Voltage Range
Input Leakage Current
Input Capacitance
1. Input Voltage range can be up to VDDANA without destruction or over-consumption.
2. If VDDIO < V
Sample and Hold Time versus Source Output Impedance
ADC Application Information
ADVREF
The following figure gives a simplified acquisition path.
Figure 43-10. Simplified Acquisition Path
The user can drive ADC input with impedance of Zsource up to:
with SHTIM (Sample and Hold Time register) expressed in ns and Z
Note:
For more information on data converter terminology, please refer to the application note:
Data Converter Terminology, Atmel lit° 6022.
http://www.atmel.com/dyn/resources/prod_documents/doc6022.pdf
• In 10-bit mode: SHTIM = 0.042 x Zsource + 160
• In 12-bit mode: SHTIM= 0.054 x Zsource + 205
, max input voltage is VDDIO.
Csample and Ron are taken into account in the formulas
Zsource
Input
ADC
Mux.
Ron
Sample & Hold
Csample
Min
0
Typ
SOURCE
SAM3U Series
12-bit
ADC
Core
V
expressed in ohms.
AD12BVREF
Max
±0.5
14
Units
μA
pF
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