ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 235
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
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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13. Real-time Timer (RTT)
13.1
13.2
13.3
Figure 13-1. Real-time Timer
6500C–ATARM–8-Feb-11
SLCK
RTT_MR
Description
Embedded Characteristics
Block Diagram
RTTRST
reload
Divider
16-bit
RTT_MR
RTPRES
The Real-time Timer is built around a 32-bit counter used to count roll-over events of the 16-bit
prescaler which size enables to count elapsed seconds from a 32 kHz slow clock source. It gen-
erates a periodic interrupt and/or triggers an alarm on a programmed value.
Alarm register capable to generate a wake-up of the system through the Shut Down Controller
• Real-time Timer, allowing backup of time with different accuracies
RTT_VR
– 32-bit free-running back-up counter
– Integrates a 16-bit programmable prescaler running on slow clock
RTT_AR
RTT_MR
RTTRST
0
1
Counter
CRTV
32-bit
ALMV
0
RTT_SR
RTT_SR
RTT_SR
=
read
reset
reset
set
set
RTTINC
ALMS
SAM3S Preliminary
RTTINCIEN
RTT_MR
RTT_MR
ALMIEN
rtt_alarm
rtt_int
235
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