M95256-DWMN3G/K datasheet, PDF

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M95256-DWMN3G/K: DescriptionSPI BUS SERIAL EEPROM; Categorystorage storage; File Size735KB，42 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/

Download Datasheet Parametric View All

M95256-DWMN3G/K Overview

SPI BUS SERIAL EEPROM

M95256-DWMN3G/K Parametric

Parameter Name	Attribute value
Maker	STMicroelectronics
package instruction	SOP-8
Reach Compliance Code	compli
Maximum clock frequency (fCLK)	10 MHz
JESD-30 code	R-PDSO-G8
length	4.9 mm
memory density	262144 bi
Memory IC Type	EEPROM
memory width	8
Number of functions	1
Number of terminals	8
word count	32768 words
character code	32000
Operating mode	SYNCHRONOUS
Maximum operating temperature	125 °C
Minimum operating temperature	-40 °C
organize	32KX8
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Parallel/Serial	SERIAL
Filter level	AEC-Q100
Maximum seat height	1.75 mm
Serial bus type	SPI
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	2.5 V
surface mount	YES
technology	CMOS
Temperature level	AUTOMOTIVE
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
width	3.9 mm
Maximum write cycle time (tWC)	4 ms

M95256-DWMN3G/K Preview

M95256-A125

M95256-A145

Automotive 256-Kbit serial SPI bus EEPROMs

with high-speed clock

Datasheet

production data

Features

•

Compatible with the Serial Peripheral Interface

(SPI) bus

SO8 (MN)

150 mil width

•

Memory array

– 256 Kbit (32 Kbytes) of EEPROM

– Page size: 64 bytes

– Write protection by block: 1/4, 1/2 or whole

memory

– Additional Write lockable Page

(Identification page)

•

Extended temperature and voltage ranges

– Up to 125 °C (V

from 1.8 V to 5.5 V)

– Up to 145 °C (V

from 2.5 V to 5.5 V)

•

High speed clock frequency

– 20 MHz for V

≥

4.5 V

– 10 MHz for V

≥

2.5 V

– 5 MHz for V

≥

1.8 V

•

Schmitt trigger inputs for noise filtering

•

Short Write cycle time

– Byte Write within 4 ms

– Page Write within 4 ms

•

Write cycle endurance

– 4 million Write cycles at 25 °C

– 1.2 million Write cycles at 85 °C

– 600 k Write cycles at 125 °C

– 400 k Write cycles at 145 °C

•

Data retention

– 50 years at 125 °C

– 100 years at 25 °C

•

ESD Protection (Human Body Model)

– 4000 V

•

Packages

– RoHS-compliant and halogen-free

(ECOPACK2

)

TSSOP8 (DW)

169 mil width

WFDFPN8 (MF)

2 x 3 mm

December 2013

This is information on a product in full production.

DocID022807 Rev 4

1/42

www.st.com

Contents

M95256-A125 M95256-A145

Contents

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Signal description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

Serial Data output (Q) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Serial Data input (D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Serial Clock (C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Chip Select (S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Hold (HOLD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Write Protect (W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Operating features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.1

3.2

3.3

3.4

Active power and Standby power modes . . . . . . . . . . . . . . . . . . . . . . . . . 10

SPI modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Hold mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Protocol control and data protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

3.4.1

3.4.2

Protocol control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Status Register and data protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.5

Identification page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

4.10

Write Enable (WREN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Write Disable (WRDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Read Status Register (RDSR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Write Status Register (WRSR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Read from Memory Array (READ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Write to Memory Array (WRITE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Read Identification Page (RDID) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Write Identification Page (WRID) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Read Lock Status (RDLS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Lock Identification Page (LID) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

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DocID022807 Rev 4

M95256-A125 M95256-A145

Contents

Application design recommendations . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.1

Supply voltage (V

) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.1.1

5.1.2

5.1.3

Operating supply voltage (V

) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Power-up conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.2

5.3

Implementing devices on SPI bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Cycling with Error Correction Code (ECC) . . . . . . . . . . . . . . . . . . . . . . . . 28

Delivery state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

DocID022807 Rev 4

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List of tables

M95256-A125 M95256-A145

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.

Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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

Write-protected block size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Protection modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Device identification bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Instruction set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Significant bits within the two address bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Cycling performance by groups of 4 bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Operating conditions (voltage range W, temperature range 4). . . . . . . . . . . . . . . . . . . . . . 30

Operating conditions (voltage range R, temperature range 3) . . . . . . . . . . . . . . . . . . . . . . 30

Operating conditions (voltage range R, temperature range 3)

for high-speed communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

DC characteristics (voltage range W, temperature range 4). . . . . . . . . . . . . . . . . . . . . . . . 31

DC characteristics (voltage range R, temperature range 3) . . . . . . . . . . . . . . . . . . . . . . . . 32

AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

SO8N – 8-lead plastic small outline, 150 mils body width, package mechanical data . . . . 36

TSSOP8 – 8-lead thin shrink small outline, package mechanical data. . . . . . . . . . . . . . . . 37

WFDFPN8 (MLP8) – 8-lead thin fine pitch dual flat package no lead 2 x 3 mm,

mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

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

4/42

DocID022807 Rev 4

M95256-A125 M95256-A145

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.

Figure 21.

Figure 22.

Figure 23.

Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

8-pin package connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

SPI modes supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Hold mode activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Write Enable (WREN) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Write Disable (WRDI) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Read Status Register (RDSR) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Write Status Register (WRSR) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Read from Memory Array (READ) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Byte Write (WRITE) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Page Write (WRITE) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Read Identification Page sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Write Identification Page sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Read Lock Status sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lock ID sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Bus master and memory devices on the SPI bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

AC measurement I/O waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Serial input timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Hold timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Serial output timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

SO8N – 8-lead plastic small outline, 150 mils body width, package outline . . . . . . . . . . . . 36

TSSOP8 – 8-lead thin shrink small outline, package outline . . . . . . . . . . . . . . . . . . . . . . . 37

WFDFPN8 (MLP8) – 8-lead thin fine pitch dual flat package no lead

2 x 3 mm, package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

DocID022807 Rev 4

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