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Board Description
3.2
AT91SAM7A3
Figure 3-1. Block Diagram
Block Diagram
TDI
TDO
TMS
TCK
JTAGSEL
TST
System Controller
JTAG
SCAN
ICE
ARM7TDMI
Processor
1.8 V
Voltage
Regulator
VDD3V3
GND
VDD1V8
FIQ
AIC
IRQ0-IRQ3
Embedded
DRXD
DTXD
DBGU
PDC
PDC
FLASH
256K Bytes
Flash
Controller
PCK0-PCK3
PLLRC
XIN
XOUT
PLL
OSC
PMC
SRAM
32K Bytes
Memory
Controller
Memory
Protection
Unit
Address
Decoder
GND
GPBR
VDDBU
FWKUP
WKUP0
WKUP1
SHDW
RCOSC
RTT
Shutdown
Controller
Peripheral Bridge
Peripheral Data
Controller
19 channels
Abort
Status
Misalignment
Detection
VDDBU
POR
VDD3V3
POR
VDD1V8 POR
Reset
Controller
APB
FIFO
USB Device
DDM
DDP
NRST
PIOA
PIT
WDT
PIOB
TWI
CAN0
CAN1
TWD
TWCK
CANRX0
CANTX0
CANRX1
CANTX1
PWM0
RXD0
TXD0
SCK0
RTS0
CTS0
RXD1
TXD1
SCK1
RTS1
CTS1
RXD2
TXD2
SCK2
RTS2
CTS2
SPI0_NPCS0
SPI0_NPCS1
USART0
USART1
USART2
PDC
PDC
PDC
PDC
PDC
PDC
PDC
PDC
PDC
PDC
PWMC
SSC0
SSC1
PWM1
PWM2
PWM3
PWM4
PWM5
PWM6
PWM7
TF0
TK0
TD0
RD0
RK0
RF0
TF1
TK1
TD1
RD1
SPI0_NPCS2
RK1
SPI0_NPCS3
SPI0
PDC
RF1
SPI0_MISO
SPI0_MOSI
SPI0_SPCK
SPI1_NPCS0
SPI1_NPCS1
SPI1_NPCS2
SPI1_NPCS3
SPI1_MISO
SPI1_MOSI
SPI1_SPCK
MCCK
MCCDA
MCDA0-MCDA3
ADC0_AD0
ADC0_AD1
ADC0_AD2
ADC0_AD3
ADC0_AD4
ADC0_AD5
ADC0_AD6
ADC0_AD7
ADC0_ADTRG
ADVREFP
VDDANA
GND
ADC1_AD0
ADC1_AD1
ADC1_AD2
ADC1_AD3
ADC1_AD4
ADC1_AD5
ADC1_AD6
ADC1_AD7
ADC1_ADTRG
SPI1
MCI
ADC0
ADC1
PDC
PDC
PDC
PDC
PDC
PDC
Timer Counter
TC0
TC1
TC2
Timer Counter
TC3
TC4
TC5
Timer Counter
TC6
TC7
TC8
TCLK0
TCLK1
TCLK2
TIOA0
TIOB0
TIOA1
TIOB1
TIOA2
TIOB2
TCLK3
TCLK4
TCLK5
TIOA3
TIOB3
TIOA4
TIOB4
TIOA5
TIOB5
TCLK6
TCLK7
TCLK8
TIOA6
TIOB6
TIOA7
TIOB7
TIOA8
TIOB8
3-4
6165C–ATARM–26-Jun-06
AT91SAM7A3-EK Evaluation Board User Guide
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