M95256-R datasheet(23/51 Pages) STMICROELECTRONICS

部品番号	M95256-R

部品情報	256-Kbit serial SPI bus EEPROM with high-speed clock

PDF	51 Pages

Scroll/Zoom	100%

メーカー	STMICROELECTRONICS [STMicroelectronics]

ホームページ	http://www.st.com

Logo

23 / 51 page

6.8

Write Identification page (available only in M95256-D devices)

The Identification page (64 bytes) is an additional page that can be written and (later) permanently locked in

Read-only mode.

Writing this page is achieved with the Write Identification page instruction (see Table 4. Instruction set). The Chip

select signal (S) is first driven low. The bits of the instruction byte, address bytes, and at least one data byte are

then shifted in on Serial data input (D). Address bit A10 must be 0, upper address bits are Don't care, the lower

address bits [A5:A0] define the byte address within the Identification page. The instruction sequence is shown in

Figure 16.

Figure 16. Write Identification page sequence

9 10

20 21 22 23 24 25 26 27

14 13

28 29 30

High impedance

Instruction

16-bit address

Data byte

M95256-W M95256-R M95256-DF

Write Identification page (available only in M95256-D devices)

DS4712 - Rev 22

page 23/51

M95256-R データシート(PDF) 23 Page - STMicroelectronics