AT90USB1286 Atmel Corporation, AT90USB1286 Datasheet - Page 327
AT90USB1286
Manufacturer Part Number
AT90USB1286
Description
Manufacturer
Atmel Corporation
Specifications of AT90USB1286
Flash (kbytes)
128 Kbytes
Pin Count
64
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
48
Ext Interrupts
16
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
Twi (i2c)
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
8
Eeprom (bytes)
4096
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
4
Output Compare Channels
10
Input Capture Channels
1
Pwm Channels
9
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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7593K–AVR–11/09
(ADIF in ADCSRA is set). The internal voltage reference options may not be used if an external
reference voltage is being applied to the AREF pin.
Table 25-3.
• Bit 5 – ADLAR: ADC Left Adjust Result
The ADLAR bit affects the presentation of the ADC conversion result in the ADC Data Register.
Write one to ADLAR to left adjust the result. Otherwise, the result is right adjusted. Changing the
ADLAR bit will affect the ADC Data Register immediately, regardless of any ongoing conver-
sions. For a complete description of this bit, see
page
• Bits 4:0 – MUX4:0: Analog Channel Selection Bits
The value of these bits selects which combination of analog inputs are connected to the ADC.
These bits also select the gain for the differential channels. See
bits are changed during a conversion, the change will not go in effect until this conversion is
complete (ADIF in ADCSRA is set).
Table 25-4.
MUX4..0
00000
00001
00010
00011
00100
00101
00110
00111
REFS1
0
0
1
1
329.
REFS0
Single Ended
Input
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
0
1
0
1
Voltage Reference Selections for ADC
Input Channel and Gain Selections
Voltage Reference Selection
AREF, Internal Vref turned off
AV
Reserved
Internal 2.56V Voltage Reference with external capacitor on AREF pin
CC
with external capacitor on AREF pin
Positive Differential
Input
N/A
“The ADC Data Register – ADCL and ADCH” on
Negative Differential
Input
AT90USB64/128
Table 25-4
for details. If these
Gain
327
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