M95512-R datasheet(6/48 Pages) STMICROELECTRONICS

6 / 48 page

Description

M95512-W, M95512-R

6/48

Doc ID 11124 Rev 13

Description

The M95512-W, M95512-R and M95512-DR are electrically erasable programmable

memory (EEPROM) devices accessed by a high-speed SPI-compatible bus. In the rest of

the document these devices are referred to as M95512, unless otherwise specified.

The M95512-DR also offers an additional page, named the Identification Page (128 bytes)

which can be written and (later) permanently locked in Read-only mode. This Identification

Page offers flexibility in the application board production line, as it can be used to store

unique identification parameters and/or parameters specific to the production line.

Figure 1.

Logic diagram

The memory array is organized as 65536 × 8 bit. The device is accessed by a simple serial

interface that is SPI-compatible. The bus signals are C, D and Q, as shown in Table 1 and

Figure 1.

The device is selected when Chip Select (S) is taken low. Communications with the device

can be interrupted using Hold (HOLD).

M95512-R 数据表(PDF) 6 Page - STMicroelectronics