ATSAM3S1BA-AU Atmel, ATSAM3S1BA-AU Datasheet - Page 52
ATSAM3S1BA-AU
Manufacturer Part Number
ATSAM3S1BA-AU
Description
IC MCU 32BIT 64KB FLASH 64LQFP
Manufacturer
Atmel
Series
SAM3Sr
Specifications of ATSAM3S1BA-AU
Core Processor
ARM® Cortex-M3™
Core Size
32-Bit
Speed
64MHz
Connectivity
I²C, MMC, SPI, SSC, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Number Of I /o
47
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.62 V ~ 1.95 V
Data Converters
A/D 10x10/12b, D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-LQFP
Controller Family/series
ATSAM3S
No. Of I/o's
47
Ram Memory Size
16KB
Cpu Speed
64MHz
No. Of Timers
6
Rohs Compliant
Yes
Processor Series
ATSAM3x
Core
ARM Cortex M3
3rd Party Development Tools
JTRACE-CM3, MDK-ARM, RL-ARM, ULINK2
Development Tools By Supplier
ATSAM3S-EK
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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10.4.4
10.4.5
10.4.6
52
SAM3S Preliminary
Exceptions and interrupts
Data types
The Cortex Microcontroller Software Interface Standard
The Cortex-M3 processor supports interrupts and system exceptions. The processor and the
Nested Vectored Interrupt Controller (NVIC) prioritize and handle all exceptions. An exception
changes the normal flow of software control. The processor uses handler mode to handle all
exceptions except for reset. See
70
The NVIC registers control interrupt handling. See
page 151
The processor:
For a Cortex-M3 microcontroller system, the Cortex Microcontroller Software Interface Standard
(CMSIS) defines:
The CMSIS includes address definitions and data structures for the core peripherals in the Cor-
tex-M3 processor. It also includes optional interfaces for middleware components comprising a
TCP/IP stack and a Flash file system.
CMSIS simplifies software development by enabling the reuse of template code and the combi-
nation of CMSIS-compliant software components from various middleware vendors. Software
vendors can expand the CMSIS to include their peripheral definitions and access functions for
those peripherals.
This document includes the register names defined by the CMSIS, and gives short descriptions
of the CMSIS functions that address the processor core and the core peripherals.
from the architectural short names that might be used in other documents.
The following sections give more information about the CMSIS:
This document uses the register short names defined by the CMSIS. In a few cases these differ
• supports the following data types:
• supports 64-bit data transfer instructions.
• manages all data memory accesses as little-endian. Instruction memory and Private
• a common way to:
• the names of:
• a device-independent interface for RTOS kernels, including a debug channel.
•
for more information.
Peripheral Bus (PPB) accesses are always little-endian. See
attributes” on page 54
“Power management programming hints” on page 74
– 32-bit words
– 16-bit halfwords
– 8-bit bytes
– access peripheral registers
– define exception vectors
– the registers of the core peripherals
– the core exception vectors
for more information.
for more information.
“Exception entry” on page 69
“Nested Vectored Interrupt Controller” on
and
“Memory regions, types and
“Exception return” on page
6500C–ATARM–8-Feb-11
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