ATSAM4SD32BA-MU datasheet(36/67 Pages) ATMEL

36 / 67 page

11100BS–ATARM–31-Jul-12

SAM4S Series [Preliminary]

Figure 9-3.

Flash Size

Erasing the memory can be performed as follows:

• on a 512-byte page inside a sector, of 8Kbytes

Note:

EWP and EWPL commands can be only used in 8Kbytes sectors.

• on a 4-Kbyte Block inside a sector of 8 Kbytes/48 Kbytes/64 Kbytes

• on a sector of 8 Kbytes/48 Kbytes/64 Kbytes

• on chip

9.1.3.2

Enhanced Embedded Flash Controller

The Enhanced Embedded Flash Controller manages accesses performed by the masters of the

system. It enables reading the Flash and writing the write buffer. It also contains a User Inter-

face, mapped on the APB.

The Enhanced Embedded Flash Controller ensures the interface of the Flash block.

It manages the programming, erasing, locking and unlocking sequences of the Flash using a full

set of commands.

One of the commands returns the embedded Flash descriptor definition that informs the system

about the Flash organization, thus making the software generic.

9.1.3.3

Flash Speed

The user needs to set the number of wait states depending on the frequency used:

For more details, refer to the “AC Characteristics” sub-section of the product “Electrical

Characteristics”.

2 * 8 KBytes

1 * 48 KBytes

15 * 64 KBytes

2 * 8 KBytes

1 * 48 KBytes

7 * 64 KBytes

2 * 8 KBytes

1 * 48 KBytes

3 * 64 KBytes

Flash 1 MBytes

Flash 512 KBytes

Flash 256 KBytes

ATSAM4SD32BA-MU Datasheet(PDF) 36 Page - ATMEL Corporation