AN2244

1 ST10F27x embedded Flash overview

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1

ST10F27x embedded Flash overview

The ST10F27x provides an on-chip high-speed single voltage Flash memory.

The write operations of the ST10F27x Flash banks are managed by an embedded Flash

Program/Erase Controller.

The following table summarizes the main ST10F27x Embedded Flash characteristics:

Depending on the ST10 derivative, the Flash memory will be composed either of 1 module

(IFLASH) or of 2 modules (IFLASH and XFLASH). Each module is divided into several

banks, themselves sub-divided into sectors.

The ST10F276 and ST10F275 embedded Flash is composed of two modules.

The ST10F271, ST10F272 and ST10F273 embedded Flash is composed of one module.

On the IFLASH, the internal data bus is 32 bits wide (I-BUS).

The XFLASH module is mapped on the XBUS and the data bus is 16 bits wide (X-BUS).

The smallest erasable part of Flash is a sector.

ST10F271

ST10F272

ST10F273

ST10F275

ST10F276

Flash Size

(KBytes)

128

256

512

832

832

Flash Organization

Banks / Sectors

1 /6

1 / 8

2 / 12

4 /17

4 /17

Programming

voltage

5 Volts

Programming

method

Write/Erase Controller

Program/Erase

cycles

100 Kcycles, 20 years data retention