ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 25
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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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Table 6-1.
Notes:
6.2.1
6500C–ATARM–8-Feb-11
SYSTEM_IO
bit number
1. If PB12 is used as PIO input in user applications, a low level must be ensured at startup to prevent Flash erase before the
2. In the product Datasheet Refer to: “Slow Clock Generator” of the “Supply Controller” section.
3. In the product Datasheet Refer to: “3 to 20 MHZ Crystal Oscillator” information in the ”PMC” section.
12
10
11
7
6
5
4
-
-
-
-
Serial Wire JTAG Debug Port (SWJ-DP) Pins
user application sets PB12 into PIO mode,
System I/O Configuration Pin List.
TDO/TRACESWO
Default function
TCK/SWCLK
TMS/SWDIO
The SWJ-DP pins are TCK/SWCLK, TMS/SWDIO, TDO/SWO, TDI and commonly provided on
a standard 20-pin JTAG connector defined by ARM. For more details about voltage reference
and reset state, refer to
At startup, SWJ-DP pins are configured in SWJ-DP mode to allow connection with debugging
probe. Please refer to the “Debug and Test” Section of the product datasheet.
SWJ-DP pins can be used as standard I/Os to provide users more general input/output pins
when the debug port is not needed in the end application. Mode selection between SWJ-DP
mode (System IO mode) and general IO mode is performed through the AHB Matrix Special
Function Registers (MATRIX_SFR). Configuration of the pad for pull-up, triggers, debouncing
and glitch filters is possible regardless of the mode.
The JTAGSEL pin is used to select the JTAG boundary scan when asserted at a high level. It
integrates a permanent pull-down resistor of about 15 kΩ to GND, so that it can be left uncon-
nected for normal operations.
By default, the JTAG Debug Port is active. If the debugger host wants to switch to the Serial
Wire Debug Port, it must provide a dedicated JTAG sequence on TMS/SWDIO and
TCK/SWCLK which disables the JTAG-DP and enables the SW-DP. When the Serial Wire
Debug Port is active, TDO/TRACESWO can be used for trace.
The asynchronous TRACE output (TRACESWO) is multiplexed with TDO. So the asynchronous
trace can only be used with SW-DP, not JTAG-DP. For more information about SW-DP and
JTAG-DP switching, please refer to the “Debug and Test” Section.
after reset
ERASE
DDM
DDP
PB9
PB8
PA7
PA8
TDI
Other function
XOUT32
Table 3-1 on page
PB12
PB10
PB11
XIN32
XOUT
PB7
PB6
PB5
PB4
XIN
Low Level at startup
Constraints for
6.
normal start
-
-
-
-
-
-
-
-
-
-
(1)
SAM3S Preliminary
Register in the “Bus Matrix” section of
(Refer to the SystemIO Configuration
In Matrix User Interface Registers
See footnote
See footnote
the datasheet.)
Configuration
(2)
(3)
below
below
25
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