AT90USB646-MU Atmel, AT90USB646-MU Datasheet - Page 318
![IC AVR MCU 64K 64QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
AT90USB646-MU
Manufacturer Part Number
AT90USB646-MU
Description
IC AVR MCU 64K 64QFN
Manufacturer
Atmel
Series
AVR® 90USBr
Datasheet
1.AT90USB646-MU.pdf
(461 pages)
Specifications of AT90USB646-MU
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
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K 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-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
Processor Series
90USB
Core
AVR
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
SPI, TWI, USART, USB
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
48
Number Of Timers
4
Operating Supply Voltage
5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Cpu Family
AT90
Device Core
AVR
Device Core Size
8b
Frequency (max)
20MHz
Total Internal Ram Size
4KB
# I/os (max)
48
Number Of Timers - General Purpose
4
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
64
Package Type
QFN EP
For Use With
ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATSTK525 - KIT STARTER FOR AT90USBAT90USBKEY2 - KIT DEMO FOR AT90USB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
AT90USB646-16MU
AT90USB646-16MU
AT90USB646-16MU
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT90USB646-MU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
- Current page: 318 of 461
- Download datasheet (5Mb)
25.4.1
318
AT90USB64/128
Differential Channels
Figure 25-6. ADC Timing Diagram, Auto Triggered Conversion
Figure 25-7. ADC Timing Diagram, Free Running Conversion
Table 25-1.
When using differential channels, certain aspects of the conversion need to be taken into
consideration.
Differential conversions are synchronized to the internal clock CK
clock frequency. This synchronization is done automatically by the ADC interface in such a way
that the sample-and-hold occurs at a specific phase of CK
user (i.e., all single conversions, and the first free running conversion) when CK
take the same amount of time as a single ended conversion (13 ADC clock cycles from the next
prescaled clock cycle). A conversion initiated by the user when CK
Condition
Sample & Hold
(Cycles from Start of Convertion)
Conversion Time
(Cycles)
Cycle Number
ADC Clock
Trigger
Source
ADATE
ADIF
ADCH
ADCL
ADC Conversion Time
Prescaler
Reset
MUX and REFS
Update
1
2
3
Sample &
Hold
4
Conversion
5
First
14.5
25
6
7
One Conversion
8
Cycle Number
ADC Clock
ADSC
ADIF
ADCH
ADCL
9
Conversion
Single Ended
10
Conversion,
Conversion
Complete
Complete
One Conversion
Normal
11
11
1.5
13
ADC2
12
12
13
13
. A conversion initiated by the
ADC2
Next Conversion
1
Sign and MSB of Result
Sign and MSB of Result
LSB of Result
ADC2
LSB of Result
2
Auto Triggered
MUX and REFS
Update
is high will take 14 ADC
Next Conversion
Convertion
equal to half the ADC
1
Prescaler
Reset
3
13.5
Sample & Hold
2
2
4
ADC2
7593K–AVR–11/09
is low will
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