M95256-MN6P/A datasheet, PDF - EEWORLD Datasheet

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M95256-MN6P/A: Description32K X 8 SPI BUS SERIAL EEPROM, PDSO8; Categorystorage; File Size206KB，42 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/

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M95256-MN6P/A Overview

32K X 8 SPI BUS SERIAL EEPROM, PDSO8

M95256-MN6P/A Parametric

Parameter Name	Attribute value
Number of functions	1
Number of terminals	8
Maximum operating temperature	85 Cel
Minimum operating temperature	-40 Cel
Maximum supply/operating voltage	5.5 V
Minimum supply/operating voltage	2.5 V
Rated supply voltage	5 V
maximum clock frequency	5 MHz
Processing package description	0.150 INCH, ROHS COMPLIANT, PLASTIC, SOP-8
Lead-free	Yes
EU RoHS regulations	Yes
state	ACTIVE
packaging shape	Rectangle
Package Size	SMALL OUTLINE
surface mount	Yes
Terminal form	GULL WING
Terminal spacing	1.27 mm
terminal coating	Nickel Palladium
Terminal location	pair
Packaging Materials	Plastic/Epoxy
Temperature level	INDUSTRIAL
memory width	8
organize	32K × 8
storage density	262144 deg
operating mode	Synchronize
Number of digits	32768 words
Number of digits	32K
Memory IC type	bus serial electrically erasable read-only memory
serial parallel	serial
Maximum TWC of write cycle	5 ms

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M95256

M95256-W M95256-R

256 Kbit Serial SPI bus EEPROM

with high speed clock

Feature summary

■

Compatible with SPI Bus Serial Interface

(Positive Clock SPI Modes)

Single Supply Voltage:

– 4.5 to 5.5V for M95256

– 2.5 to 5.5V for M95256-W

– 1.8 to 5.5V for M95256-R

High Speed

– 10MHz Clock Rate, 5ms Write Time

Status Register

Hardware Protection of the Status Register

BYTE and PAGE WRITE (up to 64 Bytes)

Self-Timed Programming Cycle

Adjustable Size Read-Only EEPROM Area

Enhanced ESD Protection

More than 1,000,000 Write Cycles

More than 40-Year Data Retention

Packages

– ECOPACK® (RoHS compliant)

TSSOP8 (DW)

169 mil width

SO8 (MW)

200 mil width

■

SO8 (MN)

150 mil width

■

April 2006

Rev 6

1/42

www.st.com

Contents

M95256, M95256-W, M95256-R

Contents

Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Memory organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Signal description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1

3.2

3.3

3.4

3.5

3.6

3.7

Serial Data Output (Q) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Serial Data Input (D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Serial Clock (C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Chip Select (S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Hold (HOLD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Write Protect (W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Supply voltage (V

) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.7.1

3.7.2

3.7.3

3.7.4

Operating supply voltage V

CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Power-up conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Internal device reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Operating features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.1

4.2

4.3

Hold Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Data Protection and Protocol Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1

5.2

5.3

Write Enable (WREN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Write Disable (WRDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Read Status Register (RDSR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.3.1

5.3.2

5.3.3

5.3.4

WIP bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

WEL bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

BP1, BP0 bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

SRWD bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.4

5.5

5.6

Write Status Register (WRSR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Read from Memory Array (READ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Write to Memory Array (WRITE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2/42

List of tables

M95256, M95256-W, M95256-R

List of tables

Table 1.

Table 2.

Table 3.

Table 4.

Table 5.

Table 6.

Table 7.

Table 8.

Table 9.

Table 10.

Table 11.

Table 12.

Table 13.

Table 14.

Table 15.

Table 16.

Table 17.

Table 18.

Table 19.

Table 20.

Table 21.

Table 22.

Table 23.

Table 24.

Table 25.

Table 26.

Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Write-Protected Block Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Instruction Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Status Register Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Protection Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Operating Conditions (M95256) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Operating Conditions (M95256-W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Operating Conditions (M95256-R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

AC Measurement Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

DC Characteristics (M95256, Device Grade 6). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

DC Characteristics (M95256, Device Grade 3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

DC Characteristics (M95256-W, Device Grade 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

DC Characteristics (M95256-W, Device Grade 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

DC Characteristics (M95256-R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

AC Characteristics (M95256, Device Grade 6). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

AC Characteristics (M95256, Device Grade 3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

AC Characteristics (M95256-W, Device Grade 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

AC Characteristics (M95256-W, Device Grade 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

AC Characteristics (M95256-R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

SO8 narrow – 8 lead Plastic Small Outline, 150 mils body width, Package

Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

SO8 wide – 8 lead Plastic Small Outline, 200 mils body width, Package

Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

TSSOP8 – 8 lead Thin Shrink Small Outline, Package Mechanical Data. . . . . . . . . . . . . . 39

Ordering Information Scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4/42

M95256, M95256-W, M95256-R

List of figures

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Figure 12.

Figure 13.

Figure 14.

Figure 15.

Figure 16.

Figure 17.

Figure 18.

Figure 19.

Figure 20.

Logic Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

SO and TSSOP Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Hold Condition Activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Write Enable (WREN) Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Write Disable (WRDI) Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Read Status Register (RDSR) Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Write Status Register (WRSR) Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Read from Memory Array (READ) Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Byte Write (WRITE) Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Page Write (WRITE) Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Bus Master and Memory Devices on the SPI Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

SPI Modes Supported. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

AC Measurement I/O Waveform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Serial Input Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Hold Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Output Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

SO8 narrow – 8 lead Plastic Small Outline, 150 mils body width, Package Outline . . . . . . 37

SO8 wide – 8 lead Plastic Small Outline, 200 mils body width, Package Outline. . . . . . . . 38

TSSOP8 – 8 lead Thin Shrink Small Outline, Package Outline . . . . . . . . . . . . . . . . . . . . . 39

5/42

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