AT91SAM7S256-AU-001 Atmel, AT91SAM7S256-AU-001 Datasheet - Page 26

• Manufacturer Part Number: AT91SAM7S256-AU-001
• Description: IC ARM7 MCU 32BIT 256K 64LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7S256-AU-001

• Package / Case: 64-LQFP
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 55MHz
• Number Of I /o: 32
• Core Processor: ARM7
• Program Memory Type: FLASH
• Ram Size: 64K x 8
• Program Memory Size: 256KB (256K x 8)
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Connectivity: I²C, SPI, SSC, UART/USART, USB
• Core Size: 16/32-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: AT91SAM7S256AU001

9. System Controller
26
AT91SAM7S Series Summary
The SAM-BA Boot Assistant is a default Boot Program that provides an easy way to program in
situ the on-chip Flash memory.
The SAM-BA Boot Assistant supports serial communication through the DBGU or through the
USB Device Port. (The AT91SAM7S32/16 have no USB Device Port.)
The SAM-BA Boot provides an interface with SAM-BA Graphic User Interface (GUI).
The System Controller manages all vital blocks of the microcontroller: interrupts, clocks, power,
time, debug and reset.
The System Controller peripherals are all mapped to the highest 4 Kbytes of address space,
between addresses 0xFFFF F000 and 0xFFFF FFFF.
Figure 9-1 on page 27
Block Diagrams.
Figure 8-1 on page 20
peripherals. Note that the memory controller configuration user interface is also mapped within
this address space.
• Communication through the DBGU supports a wide range of crystals from 3 to 20 MHz via
• Communication through the USB Device Port is limited to an 18.432 MHz crystal. (
software auto-detection.
shows the mapping of the of the User Interface of the System Controller
and
Figure 9-2 on page 28
show the product specific System Controller
6175FS–ATARM–03-Dec-07