AT32UC3L0256 Atmel Corporation, AT32UC3L0256 Datasheet - Page 809

• Manufacturer Part Number: AT32UC3L0256
• Manufacturer: Atmel Corporation

Specifications of AT32UC3L0256

• Flash (kbytes): 256 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 50 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 17
• Hardware Qtouch Acquisition: Yes
• Max I/o Pins: 36
• Ext Interrupts: 36
• Usb Speed: No
• Usb Interface: No
• Spi: 5
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 12
• Adc Speed (ksps): 460
• Analog Comparators: 8
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 16
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.62 to 3.6
• Operating Voltage (vcc): 1.62 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 18
• Input Capture Channels: 12
• Pwm Channels: 35
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

32.8.6
Table 32-28. ADC Characteristics
Note:
32.8.6.1
Table 32-29. Analog Inputs
Note:
32145A–12/2011
Symbol
f
f
t
t
V
I
I
Symbol
V
C
R
ADC
ADC
STARTUP
CONV
ADC
ADVREFP
ADVREFP
ADn
ONCHIP
ONCHIP
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.
1. These values are based on simulation and characterization of other AVR microcontrollers manufactured in the same pro-
Analog to Digital Converter Characteristics
cess technology. These values are not covered by test limits in production.
Parameter
ADC clock frequency
ADC clock frequency
Startup time
Conversion time (latency)
Throughput rate
Throughput rate
Reference voltage range
Current consumption on V
Current consumption on ADVREFP
pin
Parameter
Input Voltage Range
Internal Capacitance
Internal Resistance
Inputs and Sample and Hold Acquisition Times
The analog voltage source 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 resis-
tor (
(
sample and hold time.
C
SOURCE
(1)
R
(1)
ONCHIP
) of the PCB and source must be taken into account when calculating the required
VDDANA
) and a capacitor (
Conditions
12-bit mode
10-bit mode
8-bit mode
V
V
V
VDDIO
VDDCORE
VDDIO
Figure 32-7
Conditions
12-bit resolution mode
10-bit resolution mode
8-bit resolution mode
Return from Idle Mode
f
V
12-bit resolution mode,
low impedance source
V
10-bit resolution mode,
low impedance source
V
8-bit resolution mode,
low impedance source
V
ADC Clock = 6MHz
f
ADC
ADC
= 3.0V to 3.6V,
= V
ADVREFP
VDD
VDD
VDD
= 1.8V
VDDCORE
= 6MHz
= 6MHz
> 3.0V, f
> 3.0V, f
> 3.0V, f
C
= V
ONCHIP
shows the ADC input channel equivalent circuit.
VDDANA
= 1.62V to 1.98V
ADC
ADC
ADC
= 6MHz,
= 6MHz,
= 6MHz,
). In addition, the resistance (
1.62
Min
Min
11
AT32UC3L0128/256
0
Typ
350
150
Typ
15
R
SOURCE
V
ADVREFP
Max
1.98
) and capacitance
460
460
Max
22.5
3.15
55.9
26
28
6
6
6
cycles
Units
kSPS
kSPS
kOhm
MHz
MHz
Units
µA
µs
pF
V
V
809