AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 4

• Manufacturer Part Number: AT91SAM7S256D-AU
• Description: ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
• Manufacturer: Atmel
• Series: SAM7S256r

Specifications of AT91SAM7S256D-AU

• Rohs: yes
• Core: ARM
• Processor Series: AT91SAM
• Data Bus Width: 16 bit/32 bit
• Maximum Clock Frequency: 55 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT
• Interface Type: 2-Wire, I2S, SPI, USART
• Length: 7 mm

2.
Figure 2-1. SAM7S512/256/128/64/321/161 Block Diagram
Block Diagram
PCK0-PCK2
IRQ0-IRQ1
VDDCORE
VDDCORE
JTAGSEL
ADVREF
ADTRG
NPCS0
NPCS1
NPCS2
NPCS3
PLLRC
XOUT
DRXD
NRST
DTXD
RXD0
RXD1
DCD1
DSR1
SPCK
TXD0
SCK0
CTS0
TXD1
SCK1
CTS1
DTR1
MISO
MOSI
RTS0
RTS1
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
WDT
PIOA
PMC
RTT
AIC
PIT
PDC
PDC
USART0
USART1
ICE
SPI
ADC
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
Address
Decoder
PDC
PDC
FIFO
Timer Counter
PWMC
TWI
SSC
TC0
TC1
TC2
USB Device
64/32/16/8/4 Kbytes
128/64/32/16 Kbytes
Programming
SAM-BA
Fast Flash
Interface
SRAM
ROM
Flash
512/256/
SAM7S Series [DATASHEET]
Regulator
Voltage
1.8 V
VDDIN
GND
VDDOUT
VDDCORE
VDDIO
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
VDDFLASH
ERASE
6175M–ATARM–26-Oct-12
4