ATSAM3X4EA-AU Atmel, ATSAM3X4EA-AU Datasheet - Page 212

Manufacturer Part Number

ATSAM3X4EA-AU

ARM Microcontrollers - MCU QFP144,GREEN, IND TEMP, MRL A

Manufacturer

ARM Cortex M3

Processor Series

Data Bus Width

Maximum Clock Frequency

Program Memory Size

Data Ram Size

Operating Supply Voltage

2.4 V to 3.6 V

Operating Temperature Range

- 40 C to +85 C

Package / Case

Mounting Style

Factory Pack Quantity

Manufacturer

BOSTOCK HK LIMITED

Part Number:

ATSAM3X4EA-AU

Manufacturer:

MPU configuration for a microcontroller

Usually, a microcontroller system has only a single processor and no caches. In such a system,

program the MPU as follows:

Table 12-40. Memory region attributes for a microcontroller

In most microcontroller implementations, the share ability and cache policy attributes do not

affect the system behavior. However, using these settings for the MPU regions can make the

application code more portable. The values given are for typical situations. In special systems,

such as multiprocessor designs or designs with a separate DMA engine, the share ability attri-

bute might be important. In these cases refer to the recommendations of the memory device

manufacturer.

Memory region

Flash memory

Internal SRAM

External SRAM

Memory type and attributes

Normal memory, Non-shareable, write-through

Normal memory, Shareable, write-through

Normal memory, Shareable, write-back, write-allocate

Device memory, Shareable

11057B–ATARM–28-May-12