SAM7S256_14 Datasheet, PDF (4/775 Pages) ATMEL Corporation – ARM-based Flash MCU

2. Block Diagram
Figure 2-1. SAM7S512/256/128/64/321/161 Block Diagram
TDI
TDO
TMS
TCK
JTAGSEL
TST
FIQ
IRQ0-IRQ1
PCK0-PCK2
PLLRC
XIN
XOUT
VDDCORE
VDDCORE
NRST
DRXD
DTXD
RXD0
TXD0
SCK0
RTS0
CTS0
RXD1
TXD1
SCK1
RTS1
CTS1
DCD1
DSR1
DTR1
RI1
NPCS0
NPCS1
NPCS2
NPCS3
MISO
MOSI
SPCK
ADTRG
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
ADVREF
JTAG
ICE
SCAN
System Controller
ARM7TDMI
Processor
1.8 V
Voltage
Regulator
AIC
PLL
OSC
PMC
RCOSC
BOD
POR
Reset
Controller
PIT
WDT
RTT
PDC
DBGU
PDC
PIOA
Memory Controller
Embedded
Flash
Controller
Address
Decoder
Abort
Status
Misalignment
Detection
Peripheral Bridge
Peripheral Data
Controller
11 Channels
APB
SRAM
64/32/16/8/4 Kbytes
Flash
512/256/
128/64/32/16 Kbytes
ROM
Fast Flash
Programming
Interface
SAM-BA
FIFO
USB Device
PDC
USART0
PDC
PDC
USART1
PDC
PDC
SPI
PDC
PDC
PWMC
PDC
SSC
PDC
Timer Counter
TC0
TC1
TC2
TWI
ADC
VDDIN
GND
VDDOUT
VDDCORE
VDDIO
VDDFLASH
ERASE
PGMRDY
PGMNVALID
PGMNOE
PGMCK
PGMM0-PGMM3
PGMD0-PGMD15
PGMNCMD
PGMEN0-PGMEN2
DDM
DDP
PWM0
PWM1
PWM2
PWM3
TF
TK
TD
RD
RK
RF
TCLK0
TCLK1
TCLK2
TIOA0
TIOB0
TIOA1
TIOB1
TIOA2
TIOB2
TWD
TWCK
SAM7S Series [DATASHEET]
4
6175M–ATARM–26-Oct-12