AT90USB646-MU Atmel, AT90USB646-MU Datasheet - Page 58
![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: 58 of 461
- Download datasheet (5Mb)
8.3
58
Power-on Reset
AT90USB64/128
Figure 8-1.
Table 8-1.
Notes:
A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection level
is defined in
POR circuit can be used to trigger the start-up Reset, as well as to detect a failure in supply
voltage.
A Power-on Reset (POR) circuit ensures that the device is properly reset from Power-on if Vcc
started from V
Symbol
V
V
V
V
t
CCRR
RST
POR
POT
RST
BODLEVEL [2..0]
1. The POR will not work unless the supply voltage has been below VPOT (falling)
Power-on Reset Threshold Voltage (rising)
Power-on Reset Threshold Voltage (falling)
V
Reset signal
V
Reset signal
Minimum pulse width on RESET Pin
RESET Pin Threshold Voltage
CC
CC
Table
Reset Logic
Reset Characteristics
POR
Start Voltage to ensure internal Power-on
Rise Rate to ensure internal Power_on
with a rise rate upper than V
Pull-up Resistor
8-1. The POR is activated whenever V
JTAG Reset
Register
FILTER
SPIKE
Parameter
CKSEL[3:0]
Power-on Reset
Reset Circuit
SUT[1:0]
Brown-out
Watchdog
Oscillator
Generator
Circuit
Clock
CK
CCRR
Register (MCUSR)
(1)
MCU Status
DATA BUS
. Reaching the Power-on Reset threshold
Delay Counters
Condition
5V, 25°C
CC
is below the detection level. The
Min
-0.1
Vcc
0.3
0.2
TIMEOUT
Typ
400
1.4
1.3
Max
0.85
Vcc
7593K–AVR–11/09
2.3
2.3
0.1
Units
V/ms
ns
V
V
V
V
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