AT90USB1286-AU Atmel, AT90USB1286-AU Datasheet - Page 329
AT90USB1286-AU
Manufacturer Part Number
AT90USB1286-AU
Description
MCU AVR 128K FLASH 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® 90USBr
Specifications of AT90USB1286-AU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART, USB, USB OTG
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
48
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Controller Family/series
AVR USB
No. Of I/o's
48
Eeprom Memory Size
4KB
Ram Memory Size
8KB
Cpu Speed
20MHz
Rohs Compliant
Yes
Processor Series
AT90USBx
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
8 KB
Interface Type
2-Wire, SPI, USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
48
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATSTK525, ATAVRISP2, ATAVRONEKIT, AT90USBKEY, ATEVK525
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Part Number
Manufacturer
Quantity
Price
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Part Number:
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Manufacturer:
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Quantity:
650
Part Number:
AT90USB1286-AU
Manufacturer:
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Quantity:
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Part Number:
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25.8.3
25.8.3.1
7593K–AVR–11/09
The ADC Data Register – ADCL and ADCH
ADLAR = 0
will take 25 ADC clock cycles instead of the normal 13. This first conversion performs initializa-
tion of the ADC.
ADSC will read as one as long as a conversion is in progress. When the conversion is complete,
it returns to zero. Writing zero to this bit has no effect.
• Bit 5 – ADATE: ADC Auto Trigger Enable
When this bit is written to one, Auto Triggering of the ADC is enabled. The ADC will start a con-
version on a positive edge of the selected trigger signal. The trigger source is selected by setting
the ADC Trigger Select bits, ADTS in ADCSRB.
• Bit 4 – ADIF: ADC Interrupt Flag
This bit is set when an ADC conversion completes and the Data Registers are updated. The
ADC Conversion Complete Interrupt is executed if the ADIE bit and the I-bit in SREG are set.
ADIF is cleared by hardware when executing the corresponding interrupt handling vector. Alter-
natively, ADIF is cleared by writing a logical one to the flag. Beware that if doing a Read-Modify-
Write on ADCSRA, a pending interrupt can be disabled. This also applies if the SBI and CBI
instructions are used.
• Bit 3 – ADIE: ADC Interrupt Enable
When this bit is written to one and the I-bit in SREG is set, the ADC Conversion Complete Inter-
rupt is activated.
• Bits 2:0 – ADPS2:0: ADC Prescaler Select Bits
These bits determine the division factor between the XTAL frequency and the input clock to the
ADC.
Table 25-5.
Bit
Bit
Read/Write
Initial Value
ADPS2
0
0
0
0
1
1
1
1
ADC7
ADC Prescaler Selections
15
R
R
–
7
0
0
ADC6
14
ADPS1
R
R
–
6
0
0
0
0
1
1
0
0
1
1
ADC5
13
R
R
–
5
0
0
ADC4
12
R
R
–
4
0
0
ADPS0
0
1
0
1
0
1
0
1
ADC3
11
R
R
–
3
0
0
ADC2
10
R
R
–
2
0
0
ADC9
ADC1
Division Factor
AT90USB64/128
R
R
9
1
0
0
128
16
32
64
2
2
4
8
ADC8
ADC0
R
R
8
0
0
0
ADCH
ADCL
329
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