Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

ATMEGA640 Datasheet(PDF) 360 Page - Microchip Technology

Part # ATMEGA640
Description  8-bit Microcontroller with 16/32/64KB In-System Programmable Flash
PDF  436 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

ATMEGA640 Datasheet(HTML) 360 Page - Microchip Technology

Back Button ATMEGA640 Datasheet HTML 356Page - Microchip Technology ATMEGA640 Datasheet HTML 357Page - Microchip Technology ATMEGA640 Datasheet HTML 358Page - Microchip Technology ATMEGA640 Datasheet HTML 359Page - Microchip Technology ATMEGA640 Datasheet HTML 360Page - Microchip Technology ATMEGA640 Datasheet HTML 361Page - Microchip Technology ATMEGA640 Datasheet HTML 362Page - Microchip Technology ATMEGA640 Datasheet HTML 363Page - Microchip Technology ATMEGA640 Datasheet HTML 364Page - Microchip Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 360 / 436 page
background image
360
ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]
DS40002211A
31.5 System and Reset Characteristics
Note:
1. The Power-on Reset will not work unless the supply voltage has been below VPOT (falling).
31.5.1
Standard Power-On Reset
This implementation of power-on reset existed in early versions of ATmega640/1280/1281/2560/2561. The table
below describes the characteristics of this power-on reset and it is valid for the following devices only:
•
ATmega640: revision A
•
ATmega1280: revision A
•
ATmega1281: revision A
•
ATmega2560: revision A to E
•
ATmega2561: revision A to E
Table 31-4.
Characteristics of Standard Power-On Reset. TA= -40 to +85°C.
Notes: 1. Values are guidelines only.
2. Threshold where device is released from reset when voltage is rising.
3. The power-on reset threshold voltage (falling) will not work unless the supply voltage has been below VPOT.
Table 31-3.
Reset, Brown-out and Internal voltage CharacteristicsCharacteristics
Symbol
Parameter
Condition
Min
Typ
Max
Units
VRST
RESET Pin Threshold Voltage
0.2
VCC
0.9
VCC
V
tRST
Minimum pulse width on RESET Pin
2.5
µs
VHYST
Brown-out Detector Hysteresis
50
mV
tBOD
Min Pulse Width on Brown-out Reset
2
µs
VBG
Bandgap reference voltage
VCC=2.7V, TA= 25C1.0
1.1
1.2
V
tBG
Bandgap reference start-up time
VCC=2.7V, TA= 25C40
70
µs
IBG
Bandgap reference current consumption
VCC=2.7V, TA= 25C10
µA
Symbol
Parameter
Min.(1)
Typ.(1)
Max.(1)
Units
VPOT
Power-on Reset Threshold Voltage (rising)(2)
0.7
1.0
1.4
V
Power-on Reset Threshold Voltage (falling)(3)
0.05
0.9
1.3
V
VPSR
Power-on slope rate
0.01
4.5
V/ms



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