Atmel Xplained Evaluation Board AT32UC3L0-XPLD AT32UC3L0-XPLD Data Sheet

32099G–06/2011

Note:

These values are based on simulation and characterization of other AVR microcontrollers manufactured in the same process 
technology. These values are not covered by test limits in production.

Note:

1. These values are based on simulation and characterization of other AVR microcontrollers manufactured in the same pro-

cess technology. These values are not covered by test limits in production.

An analog voltage input must be able to charge the sample and hold (S/H) capacitor in the ADC
in order to achieve maximum accuracy. Seen externally the ADC input consists of a resistor
(

) and a capacitor (

). In addition the resistance (

) and capacitance

(

) of the PCB and source must be taken into account when calculating the sample and

hold time. 

 shows the ADC input channel equivalent circuit.

ADC Characteristics

f

ADC

ADC clock frequency

10-bit resolution mode

6

MHz

8-bit resolution mode

6

t

STARTUP

Startup time

Return from Idle Mode

15

µs

t

CONV

Conversion time (latency)

f

ADC

 = 6MHz

11

26

cycles

Throughput rate

V

VDD 

> 3.0V, f

ADC

 = 6MHz, 

10-bit resolution mode, 

low impedance source

460

kSPS

V

VDD 

> 3.0V, f

ADC

 = 6MHz,

8-bit resolution mode,

low impedance source

460

V

ADVREFP

Reference voltage range

V

ADVREFP

 = V

VDDANA

1.62

1.98

V

I

ADC

Current consumption on V

VDDANA

ADC Clock = 6MHz

300

µA

I

ADVREFP

Current consumption on ADVREFP 
pin

f

ADC

 = 6MHz

250

Analog Inputs

V

ADn

Input Voltage Range

10-bit mode

0

V

ADVREFP

V

8-bit mode

C

ONCHIP

Internal Capacitance

21.5

pF

R

ONCHIP

Internal Resistance

V

VDDIO

 = 3.0V to 3.6V, 

V

VDDCORE

 = 1.8V

2.55

kOhm

V

VDDIO

 = V

VDDCORE

 = 1.62V to 1.98V

55.3