Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
7
SAM4S-WPIR-RD [USER GUIDE]
42060A–ATARM–12/2012
4.2.2
Clock Circuitry
The board includes 2 clock sources:
One 12 MHz Crystal for Internal Clock (Y2)
One 32.768 kHz Crystal for RTC Clock (Y1)
4.2.3
Reset Circuitry
The reset sources for the board are:
Power on reset
JTAG reset from an in-circuit emulator (JTAG interface is equipped on the board)
4.2.4
Push Button Switches
User interface (BP1)
4.2.5
Power Supplies
The Board is driven by 5V input power rail from USB cable or 3 x AAA battery.
The Board embeds all the necessary power rails required for the microcontroller
summarizes the power specifications.
Table 4-1. Power Rails Associated with the Systems
Nominal
Name
Powers
Component
3.0V
VDDIO
Partial Peripheral I/O lines
on board
3.0V
+3V_PERIPH
SRAM and image sensor
on board
3.0V
+3V_LCD
LCD and backlight driver
on board
1.2V
VDDPLL
the PLL cell
From SAM4S internal LDO
1.2V
VDDCORE
the core, including the processor, the
embedded memories and the peripherals
embedded memories and the peripherals
From SAM4S internal LDO
3.0V
ADVREF
analog
on board