AT91SAM7S256 ATMEL Corporation, AT91SAM7S256 Datasheet - Page 3

• Manufacturer Part Number: AT91SAM7S256
• Description: AT91 ARM THUMB-BASED MICROCONTROLLERS
• Manufacturer: ATMEL Corporation

Block Diagram
Figure 1. AT91SAM7S256 Block Diagram
6117AS–ATARM–20-Oct-04
PCK0-PCK2
IRQ0-IRQ1
VDDCORE
VDDCORE
JTAGSEL
ADVREF
ADTRG
NPCS0
NPCS1
NPCS2
NPCS3
PLLRC
DRXD
DTXD
XOUT
NRST
DCD1
SPCK
RXD0
SCK0
RXD1
SCK1
DSR1
DTR1
TXD0
RTS0
CTS0
TXD1
RTS1
CTS1
MISO
MOSI
TDO
TMS
TCK
TST
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
FIQ
XIN
TDI
RI1
RCOSC
OSC
BOD
POR
PLL
System Controller
SCAN
JTAG
DBGU
Controller
Reset
PIOA
WDT
PMC
RTT
AIC
PIT
PDC
PDC
USART0
USART1
ICE
SPI
ADC
AT91SAM7S256 Summary Preliminary
PDC
PDC
PDC
PDC
PDC
PDC
PDC
Embedded
Controller
Peripheral Bridge
Peripheral Data
Status
Flash
Abort
APB
Memory Controller
Controller
11 Channels
ARM7TDMI
Processor
Misalignment
Detection
Decoder
Address
PDC
PDC
FIFO
Timer Counter
PWMC
TWI
SSC
TC0
TC1
TC2
USB Device
Programming
Fast Flash
256 Kbytes
Interface
64 Kbytes
SRAM
Flash
Regulator
Voltage
1.8 V
VDDIN
GND
VDDOUT
VDDCORE
VDDIO
PGMRDY
PGMNVALID
PGMNOE
PGMCK
PGMM0-PGMM3
PGMD0-PGMD15
PGMNCMD
PGMEN0-PGMEN1
DDM
DDP
PWM0
PWM1
PWM2
PWM3
TF
TK
TD
RD
RK
RF
TCLK0
TCLK1
TCLK2
TIOA0
TIOB0
TIOA1
TIOB1
TIOA2
TIOB2
TWD
TWCK
VDDFLASH
ERASE
3