Datasheet

SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
442
24. SAM-BA Boot Program for SAM4E Microcontrollers
24.1 Description
The SAM-BA
®
Boot Program integrates an array of programs permitting download and/or upload into the different
memories of the product.
24.2 Embedded Characteristics
 Default Boot Program Stored in SAM4E Series Products
 Interface with SAM-BA
®
Graphic User Interface
 SAM-BA Boot
̶ Supports Several Communication Media
 Serial Communication on UART0
 USB Device Port Communication up to 1M Byte/s
̶ USB Requirements
 External Crystal or Clock with the frequency of:
11.289 MHz
12.000 MHz
16.000 MHz
18.432 MHz
24.3 Hardware and Software Constraints
 SAM-BA Boot uses the first 2048 bytes of the SRAM for variables and stacks. The remaining available size
can be used for user's code.
 USB Requirements:
̶ External Crystal or External Clock
(1)
with frequency of:
 11.289 MHz
 12.000 MHz
 16.000 MHz
 18.432 MHz
 UART0 requirements: None
Note: 1. must be 2500 ppm and 1.8V Square Wave Signal.
Table 24-1. Pins Driven during Boot Program Execution
Peripheral Pin PIO Line
UART0 URXD0 PA9
UART0 UTXD0 PA10