Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

ATmega32U2 Datasheet(PDF) 267 Page - ATMEL Corporation

Part # ATmega32U2
Description  8-bit Microcontroller with 8/16/32K Bytes of ISP Flash and USB Controller
PDF  314 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega32U2 Datasheet(HTML) 267 Page - ATMEL Corporation

Back Button ATmega32U2 Datasheet HTML 263Page - ATMEL Corporation ATmega32U2 Datasheet HTML 264Page - ATMEL Corporation ATmega32U2 Datasheet HTML 265Page - ATMEL Corporation ATmega32U2 Datasheet HTML 266Page - ATMEL Corporation ATmega32U2 Datasheet HTML 267Page - ATMEL Corporation ATmega32U2 Datasheet HTML 268Page - ATMEL Corporation ATmega32U2 Datasheet HTML 269Page - ATMEL Corporation ATmega32U2 Datasheet HTML 270Page - ATMEL Corporation ATmega32U2 Datasheet HTML 271Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 267 / 314 page
background image
267
7799B–AVR–07/09
ATmega8U2/16U2/32U2
26.4.3
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.
26.5
System and Reset Characteristics
Note:
The POR will not work unless the supply voltage has been below VPOT (falling)
Table 26-2.
External Clock Drive
Symbol
Parameter
VCC=2.7-5.5V
VCC=4.5-5.5V
Units
Min.
Max.
Min.
Max.
1/tCLCL
Oscillator Frequency
0
8
0
16
MHz
tCLCL
Clock Period
125
62.5
ns
tCHCX
High Time
50
25
ns
tCLCX
Low Time
50
25
ns
tCLCH
Rise Time
1.6
0.5
μs
tCHCL
Fall Time
1.6
0.5
μs
Δt
CLCL
Change in period from
one clock cycle to the
next
22
%
Table 26-3.
Reset, Brown-out and Internal Voltage Reference Characteristics
Symbol
Parameter
Condition
Min
Typ
Max
Units
VPOT
Power-on Reset Threshold Voltage (rising)
1.4
2.3
V
Power-on Reset Threshold Voltage (falling)(Note:)
1.3
2.3
V
VPOR
VCC Start Voltage to ensure internal Power-on Reset signal
-0.1
0.1
V
VCCRR
V
CC Rise Rate to ensure internal Power_on Reset signal
0.3
V/ms
VRST
RESET Pin Threshold Voltage
0.2
Vcc
0.85
Vcc
V
tRST
Minimum pulse width on RESET Pin
5V, 25°C
400
ns
V
HYST
Brown-out Detector Hysteresis
50
mV
tBOD
Min Pulse Width on Brown-out Reset
ns
VBG
Bandgap reference voltage
V
CC = 2.7V -
5.5V
1.0
1.1
1.2
V
tBG
Bandgap reference start-up time
-
40
70
µs
IBG
Bandgap reference current consumption
-
10
µA



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