ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 151
ATSAM3U-EK
Manufacturer Part Number
ATSAM3U-EK
Description
KIT EVAL FOR AT91SAM3U CORTEX
Manufacturer
Atmel
Type
MCUr
Datasheets
1.ATSAM3U-EK.pdf
(2 pages)
2.ATSAM3U-EK.pdf
(61 pages)
3.ATSAM3U-EK.pdf
(1171 pages)
4.ATSAM3U-EK.pdf
(53 pages)
Specifications of ATSAM3U-EK
Contents
Board
Processor To Be Evaluated
SAM3U
Data Bus Width
32 bit
Interface Type
RS-232, USB
Operating Supply Voltage
3 V
Silicon Manufacturer
Atmel
Core Architecture
ARM
Core Sub-architecture
Cortex - M3
Silicon Core Number
SAM3U4E
Silicon Family Name
SAM3U
Kit Contents
Board CD Docs
Rohs Compliant
Yes
For Use With/related Products
AT91SAM3U
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATSAM3U-EK
Manufacturer:
Atmel
Quantity:
10
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13.16.4
13.16.4.1
13.16.4.2
13.16.4.3
13.16.4.4
6430D–ATARM–25-Mar-11
TBB and TBH
Syntax
Operation
Restrictions
Condition flags
Table Branch Byte and Table Branch Halfword.
where:
Rn
then the address of the table is the address of the byte immediately following the TBB or TBH
instruction.
Rm
LSL #1 doubles the value in Rm to form the right offset into the table.
These instructions cause a PC-relative forward branch using a table of single byte offsets for
TBB, or halfword offsets for TBH. Rn provides a pointer to the table, and Rm supplies an index
into the table. For TBB the branch offset is twice the unsigned value of the byte returned from
the table. and for TBH the branch offset is twice the unsigned value of the halfword returned
from the table. The branch occurs to the address at that offset from the address of the byte
immediately after the TBB or TBH instruction.
The restrictions are:
These instructions do not change the flags.
• Rn must not be SP
• Rm must not be SP and must not be PC
• when any of these instructions is used inside an IT block, it must be the last instruction of the
IT block.
TBB [Rn, Rm]
TBH [Rn, Rm, LSL #1]
is the register containing the address of the table of branch lengths. If Rn is PC,
is the index register. This contains an index into the table. For halfword tables,
SAM3U Series
151
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