Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

ATMEGA8U2-AU Datasheet(PDF) 9 Page - ATMEL Corporation

Part # ATMEGA8U2-AU
Description  8-bit Microcontroller with 8/16/32K Butes of ISP Flash
Download  310 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATMEGA8U2-AU Datasheet(HTML) 9 Page - ATMEL Corporation

Back Button ATMEGA8U2-AU Datasheet HTML 5Page - ATMEL Corporation ATMEGA8U2-AU Datasheet HTML 6Page - ATMEL Corporation ATMEGA8U2-AU Datasheet HTML 7Page - ATMEL Corporation ATMEGA8U2-AU Datasheet HTML 8Page - ATMEL Corporation ATMEGA8U2-AU Datasheet HTML 9Page - ATMEL Corporation ATMEGA8U2-AU Datasheet HTML 10Page - ATMEL Corporation ATMEGA8U2-AU Datasheet HTML 11Page - ATMEL Corporation ATMEGA8U2-AU Datasheet HTML 12Page - ATMEL Corporation ATMEGA8U2-AU Datasheet HTML 13Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 310 page
background image
9
7799D–AVR–11/10
ATmega8U2/16U2/32U2
conditional operations. Note that the Status Register is updated after all ALU operations, as
specified in the Instruction Set Reference. This will in many cases remove the need for using the
dedicated compare instructions, resulting in faster and more compact code.
The Status Register is not automatically stored when entering an interrupt routine and restored
when returning from an interrupt. This must be handled by software.
6.4.1
SREG – Status Register
• Bit 7 – I: Global Interrupt Enable
The Global Interrupt Enable bit must be set for the interrupts to be enabled. The individual inter-
rupt enable control is then performed in separate control registers. If the Global Interrupt Enable
Register is cleared, none of the interrupts are enabled independent of the individual interrupt
enable settings. The I-bit is cleared by hardware after an interrupt has occurred, and is set by
the RETI instruction to enable subsequent interrupts. The I-bit can also be set and cleared by
the application with the SEI and CLI instructions, as described in the instruction set reference.
• Bit 6 – T: Bit Copy Storage
The Bit Copy instructions BLD (Bit LoaD) and BST (Bit STore) use the T-bit as source or desti-
nation for the operated bit. A bit from a register in the Register File can be copied into T by the
BST instruction, and a bit in T can be copied into a bit in a register in the Register File by the
BLD instruction.
• Bit 5 – H: Half Carry Flag
The Half Carry Flag H indicates a Half Carry in some arithmetic operations. Half Carry Is useful
in BCD arithmetic. See the “Instruction Set Description” for detailed information.
• Bit 4 – S: Sign Bit, S = N
 V
The S-bit is always an exclusive or between the Negative Flag N and the Two’s Complement
Overflow Flag V. See the “Instruction Set Description” for detailed information.
• Bit 3 – V: Two’s Complement Overflow Flag
The Two’s Complement Overflow Flag V supports two’s complement arithmetics. See the
“Instruction Set Description” for detailed information.
• Bit 2 – N: Negative Flag
The Negative Flag N indicates a negative result in an arithmetic or logic operation. See the
“Instruction Set Description” for detailed information.
• Bit 1 – Z: Zero Flag
The Zero Flag Z indicates a zero result in an arithmetic or logic operation. See the “Instruction
Set Description” for detailed information.
Bit
76
54
32
10
0x3F (0x5F)
I
T
H
S
V
N
Z
C
SREG
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0


Similar Part No. - ATMEGA8U2-AU

ManufacturerPart #DatasheetDescription
logo
ATMEL Corporation
ATMEGA8U2-AU ATMEL-ATMEGA8U2-AU Datasheet
353Kb / 21P
   8-bit Microcontroller with 8/16/32K Bytes of ISP Flash and USB Controller
ATMEGA8U2-AU ATMEL-ATMEGA8U2-AU Datasheet
325Kb / 22P
   Microcontroller with 8/16/32K Bytes of ISP Flash and USB Controller
More results

Similar Description - ATMEGA8U2-AU

ManufacturerPart #DatasheetDescription
logo
ATMEL Corporation
ATMEGA8U2 ATMEL-ATMEGA8U2_1 Datasheet
353Kb / 21P
   8-bit Microcontroller with 8/16/32K Bytes of ISP Flash and USB Controller
ATMEGA8U2 ATMEL-ATMEGA8U2 Datasheet
5Mb / 314P
   8-bit Microcontroller with 8/16/32K Bytes of ISP Flash and USB Controller
ATMEGA16U4 ATMEL-ATMEGA16U4 Datasheet
598Kb / 23P
   8-bit Microcontroller with 16/32K Bytes of ISP Flash and USB Controller
ATMEGA16U4 ATMEL-ATMEGA16U4_1 Datasheet
6Mb / 408P
   8-bit Microcontroller with 16/32K Bytes of ISP Flash and USB Controller
ATMEGA16U4 ATMEL-ATMEGA16U4_10 Datasheet
733Kb / 26P
   8-bit Microcontroller with 16/32K Bytes of ISP Flash and USB Controller
ATMEGA16U4 ATMEL-ATMEGA16U4_09 Datasheet
664Kb / 22P
   8-bit Microcontroller with 16/32K Bytes of ISP Flash and USB Controller
ATMEGA16U4 ATMEL-ATMEGA16U4_08 Datasheet
633Kb / 21P
   8-bit Microcontroller with 16/32K Bytes of ISP Flash and USB Controller
ATMEGA16U4 ATMEL-ATMEGA16U4_V01 Datasheet
518Kb / 27P
   8-bit Microcontroller with 16/32K bytes of ISP Flash and USB Controller
09/2014
ATMEGA8U2 ATMEL-ATMEGA8U2_12 Datasheet
325Kb / 22P
   Microcontroller with 8/16/32K Bytes of ISP Flash and USB Controller
AT90USB82 ATMEL-AT90USB82 Datasheet
2Mb / 306P
   8-bit Microcontroller with 8/16K Bytes of ISP Flash
More results


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




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   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