Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

AT90USB646 Datasheet(PDF) 400 Page - ATMEL Corporation

Part # AT90USB646
Description  8-bit Microcontroller with 64/128K Bytes of ISP Flash and USB Controller
PDF  459 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90USB646 Datasheet(HTML) 400 Page - ATMEL Corporation

Back Button AT90USB646 Datasheet HTML 396Page - ATMEL Corporation AT90USB646 Datasheet HTML 397Page - ATMEL Corporation AT90USB646 Datasheet HTML 398Page - ATMEL Corporation AT90USB646 Datasheet HTML 399Page - ATMEL Corporation AT90USB646 Datasheet HTML 400Page - ATMEL Corporation AT90USB646 Datasheet HTML 401Page - ATMEL Corporation AT90USB646 Datasheet HTML 402Page - ATMEL Corporation AT90USB646 Datasheet HTML 403Page - ATMEL Corporation AT90USB646 Datasheet HTML 404Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 400 / 459 page
background image
400
7593H–AVR–11/08
ATmega32U6/AT90USB64/128
5. All DC Characteristics contained in this datasheet are based on simulation and characterization of other AVR microcon-
trollers manufactured in the same process technology. These values are preliminary values representing design targets, and
will be updated after characterization of actual silicon
6. Values with “Power Reduction Register 1 - PRR1” disabled (0x00).
7. As specified on the USB Electrical chapter of USB Specifications 2.0, the D+/D- pads can withstand voltages down to -1V
applied through a 39 Ohms resistor
8. USB Peripheral consumes up to 50mA from the regulator or UVcc pin when USB is used at full-load
30.3
External Clock Drive Waveforms
Figure 30-1. External Clock Drive Waveforms
30.4
External Clock Drive
Note:
All DC Characteristics contained in this datasheet are based on simulation and characterization of
other AVR microcontrollers manufactured in the same process technology. These values are pre-
liminary values representing design targets, and will be updated after characterization of actual
silicon.
30.5
Maximum speed vs. V
CC
Maximum frequency is depending on V
CC. As shown in Figure 30-2, the Maximum Frequency vs.
V
CC curve is linear between 2.7V < VCC < 5.5V.
VIL1
VIH1
Table 30-1.
External Clock Drive
Symbol
Parameter
VCC=1.8-5.5V
VCC=2.7-5.5V
VCC=4.5-5.5V
Units
Min.
Max.
Min.
Max.
Min.
Max.
1/tCLCL
Oscillator
Frequency
02
08
0
16
MHz
tCLCL
Clock Period
500
125
62.5
ns
tCHCX
High Time
200
50
25
ns
tCLCX
Low Time
200
50
25
ns
tCLCH
Rise Time
2.0
1.6
0.5
μs
tCHCL
Fall Time
2.0
1.6
0.5
μs
Δt
CLCL
Change in period
from one clock
cycle to the next
22
2
%



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com