ST95022M3TR datasheet(5/16 Pages) STMICROELECTRONICS

Part #	ST95022M3TR

Description	2 Kbit Serial SPI EEPROM with High Speed Clock

PDF	16 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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5 / 16 page

AI01272

HOLD

Control Logic

High Voltage

Generator

I/O Shift Register

Address Register

and Counter

Data

16 Bytes

X Decoder

Block

Protect

Status

Figure 5. Block Diagram

tected blocks. The blocks and respective WRSR

control bits are shown in Table 4.

When the WRSR instruction and the 8 bits of the

Status Register are latched-in, the internal write

cycle is then triggered by the rising edge of S.

This rising edge of S must appear no later than the

16th clock cycle of the WRSR instruction of the

Status Register content (it must not appear a 17th

clock pulse before the rising edge of S), otherwise

the internal write sequence is not performed.

Status Register

Bits

Array

Addresses

Protected

Block

BP1

BP0

none

C0h - FFh

Upper quarter

80h - FFh

Upper half

00h - FFh

Whole memory

Table 4. Write Protected Block Size

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ST95022

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