ATSAM3S4AA-MU Atmel, ATSAM3S4AA-MU Datasheet - Page 341

• Manufacturer Part Number: ATSAM3S4AA-MU
• Description: IC MCU 32BIT 256KB FLASH 48QFN
• Manufacturer: Atmel
• Series: SAM3Sr

Specifications of ATSAM3S4AA-MU

• 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: 34
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.62 V ~ 1.95 V
• Data Converters: A/D 8x10/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-VQFN Exposed Pad, 48-HVQFN, 48-SQFN, 48-DHVQFN
• 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

21. SAM3S Boot Program
21.1
21.2
21.3
6500C–ATARM–8-Feb-11
Description
Hardware and Software Constraints
Flow Diagram
The SAM-BA
into the different memories of the product.
Note:
Table 21-1.
The Boot Program implements the algorithm in
Figure 21-1. Boot Program Algorithm Flow Diagram
The SAM-BA Boot program seeks to detect a source clock either from the embedded main oscil-
lator with external crystal (main oscillator enabled) or from a supported frequency signal applied
to the XIN pin (Main oscillator in bypass mode).
Peripheral
UART0
UART0
• SAM-BA Boot uses the first 2048 bytes of the SRAM for variables and stacks. The remaining
• USB Requirements:
• UART0 requirements: None
available size can be used for user's code.
11,289 MHz
12,000 MHz
16,000 MHz
18,432 MHz
– External Crystal or External Clock
1. must be 2500 ppm and 1.8V Square Wave Signal.
®
Device
Setup
Boot Program integrates an array of programs permitting download and/or upload
Pins Driven during Boot Program Execution
Pin
URXD0
UTXD0
Run SAM-BA Monitor
USB Enumeration
Successful ?
(1)
Yes
with frequency of:
Figure
21-1.
No
SAM3S Preliminary
Run SAM-BA Monitor
Character # received
No
from UART0?
Yes
PIO Line
PA10
PA9
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