ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 97
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ATSAM3S-EK
Manufacturer Part Number
ATSAM3S-EK
Description
KIT EVAL FOR ATSAM3S4C
Manufacturer
Atmel
Series
SAM3Sr
Type
MCUr
Specifications of ATSAM3S-EK
Contents
Board, Cables, Power Supply
Silicon Manufacturer
Atmel
Core Architecture
ARM
Core Sub-architecture
Cortex-M3
Kit Contents
Board
Features
TFT Colour LCD Display, SD/MMC Interface
Svhc
No SVHC (15-Dec-2010)
Rohs Compliant
Yes
For Use With/related Products
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATSAM3S-EK
Manufacturer:
Atmel
Quantity:
135
- Current page: 97 of 1118
- Download datasheet (24Mb)
10.12.6
10.12.6.1
10.12.6.2
6500C–ATARM–8-Feb-11
LDM and STM
Syntax
Operation
Load and Store Multiple registers.
where:
op
addr_mode
cond
Rn
!
reglist
contain register ranges. It must be comma separated if it contains more than one register or reg-
ister range, see
LDM and LDMFD are synonyms for LDMIA. LDMFD refers to its use for popping data from Full
Descending stacks.
LDMEA is a synonym for LDMDB, and refers to its use for popping data from Empty Ascending
stacks.
STM and STMEA are synonyms for STMIA. STMEA refers to its use for pushing data onto
Empty Ascending stacks.
STMFD is s synonym for STMDB, and refers to its use for pushing data onto Full Descending
stacks
LDM instructions load the registers in reglist with word values from memory addresses based on
Rn.
STM instructions store the word values in the registers in reglist to memory addresses based on
Rn.
For LDM, LDMIA, LDMFD, STM, STMIA, and STMEA the memory addresses used for the
accesses are at 4-byte intervals ranging from Rn to Rn + 4 * (n-1), where n is the number of reg-
isters in reglist. The accesses happens in order of increasing register numbers, with the lowest
numbered register using the lowest memory address and the highest number register using the
highest memory address. If the writeback suffix is specified, the value of Rn + 4 * (n-1) is written
back to Rn.
For LDMDB, LDMEA, STMDB, and STMFD the memory addresses used for the accesses are at
4-byte intervals ranging from Rn to Rn - 4 * (n-1), where n is the number of registers in reglist.
op{addr_mode}{cond} Rn{!}, reglist
LDM
STM
IA
DB
If ! is present the final address, that is loaded from or stored to, is written back into Rn.
is one of:
Load Multiple registers.
Store Multiple registers.
is any one of the following:
Increment address After each access. This is the default.
Decrement address Before each access.
is an optional condition code, see
is the register on which the memory addresses are based.
is an optional writeback suffix.
is a list of one or more registers to be loaded or stored, enclosed in braces. It can
“Examples” on page
98.
“Conditional execution” on page
SAM3S Preliminary
84.
97
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