ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 873
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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
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36.6.5.4
6500C–ATARM–8-Feb-11
Changing the Synchronous Channels Update Period
It is possible to change the update period of synchronous channels while they are enabled. (See
“Method 2: Manual write of duty-cycle values and automatic trigger of the update” on page 862
and
page
To prevent an unexpected update of the synchronous channels registers, the user must use the
“PWM Sync Channels Update Period Update Register”
update period of synchronous channels while they are still enabled. This register holds the new
value until the end of the update period of synchronous channels (when UPRCNT is equal to
UPR in
rent PWM period, then updates the value for the next period.
Note:
Note:
Figure 36-18. Synchronized Update of Update Period Value of Synchronous Channels
“Method 3: Automatic write of duty-cycle values and automatic trigger of the update” on
864.)
“PWM Sync Channels Update Period Register”
If the update register PWM_SCUPUPD is written several times between two updates, only the last
written value is taken into account.
Changing the update period does make sense only if there is one or more synchronous channels
and if the update method 1 or 2 is selected (UPDM = 1 or 2 in
ter”
).
End of PWM period and
end of Update Period
of Synchronous Channels
PWM_SCUPUPD Value
User's Writing
PWM_SCUP
(PWM_SCUP)) and the end of the cur-
SAM3S Preliminary
(PWM_SCUPUPD) to change the
“PWM Sync Channels Mode Regis-
873
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