SMA Flash Memory 272

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Part RoHS Manufacturer Memory IC Type Temperature Grade No. of Terminals Package Code Package Shape Package Body Material Surface Mount No. of Functions Technology Screening Level Terminal Form Parallel or Serial Operating Mode Sector Size (Words) Maximum Supply Current No. of Words Input/Output Type Nominal Supply Voltage / Vsup (V) Mixed Memory Type Toggle Bit Power Supplies (V) Memory Width Package Style (Meter) Package Equivalence Code Alternate Memory Width Sub-Category Minimum Data Retention Time Terminal Pitch Maximum Operating Temperature Reverse Pinout Output Characteristics Organization No. of Words Code Minimum Operating Temperature No. of Sectors/Size Command User Interface Terminal Finish Ready or Busy Terminal Position No. of Ports Write Protection JESD-30 Code Moisture Sensitivity Level (MSL) Maximum Supply Voltage (Vsup) Maximum Seated Height Endurance Maximum Clock Frequency (fCLK) Width Qualification Maximum Write Cycle Time (tWC) Serial Bus Type Boot Block Memory Density Minimum Supply Voltage (Vsup) Additional Features Page Size (words) JESD-609 Code Maximum Time At Peak Reflow Temperature (s) Peak Reflow Temperature (C) Type Maximum Standby Current Length Common Flash Interface Maximum Access Time Programming Voltage (V) Data Polling

WDS400T2B0A

Western Digital

FLASH MODULE

COMMERCIAL

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

4398046511104 words

8

MICROELECTRONIC ASSEMBLY

70 Cel

4TX8

4T

0 Cel

SINGLE

R-XSMA-N

7 mm

69.85 mm

35184372088832 bit

NAND TYPE

100.2 mm

WDS500G3XHC

Western Digital

FLASH MODULE

COMMERCIAL

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

536870912000 words

8

MICROELECTRONIC ASSEMBLY

70 Cel

500GX8

500G

0 Cel

SINGLE

R-XSMA-N

8.1 mm

300 Write/Erase Cycles

24.2 mm

4294967296000 bit

NAND TYPE

80 mm

WDS500G3X0C

Western Digital

FLASH MODULE

COMMERCIAL

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

536870912000 words

8

MICROELECTRONIC ASSEMBLY

70 Cel

500GX8

500G

0 Cel

SINGLE

R-XSMA-N

2.38 mm

300 Write/Erase Cycles

22 mm

4294967296000 bit

NAND TYPE

80 mm

TS512GMTE470A

Transcend Information

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

137438953472 words

3.3

8

MICROELECTRONIC ASSEMBLY

75 Cel

512GX8

512G

-20 Cel

SINGLE

HARDWARE

R-XSMA-N

3.465 V

42.15 mm

3.58 mm

4398046511104 bit

3.135 V

WD-MAX

NAND TYPE

22 mm

3.3

SQF-CM8V4-240G-ECE

Advantech

FLASH MODULE

75

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

SYNCHRONOUS

257698037760 words

3.3

8

MICROELECTRONIC ASSEMBLY

85 Cel

240GX8

240G

-40 Cel

SINGLE

R-XSMA-N75

7.3 mm

3000 Write/Erase Cycles

200 MHz

22 mm

2061584302080 bit

TLC NAND TYPE

80 mm

3.3

KBG30ZMS256G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

274877906944 words

3.3

8

MICROELECTRONIC ASSEMBLY

80 Cel

256GX8

256G

0 Cel

SINGLE

R-XSMA-N

2199023255552 bit

3.3

MTFDDAV480TDS-1AW1ZABYY

Micron Technology

FLASH MODULE

75

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

515396075520 words

3.3

8

MICROELECTRONIC ASSEMBLY

70 Cel

480GX8

480G

0 Cel

SINGLE

R-XSMA-N75

3.46 V

3.28 mm

22 mm

4123168604160 bit

3.14 V

TLC NAND TYPE

80 mm

3.3

KSG60ZMV256G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

274877906944 words

3.3

8

MICROELECTRONIC ASSEMBLY

80 Cel

256GX8

256G

0 Cel

SINGLE

R-XSMA-N

2199023255552 bit

TLC NAND TYPE

3.3

KBG3AZMS128G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

137438953472 words

3.3

8

MICROELECTRONIC ASSEMBLY

80 Cel

128GX8

128G

0 Cel

SINGLE

R-XSMA-N

1099511627776 bit

3.3

KSG60ZMV512G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

549755813888 words

3.3

8

MICROELECTRONIC ASSEMBLY

80 Cel

512GX8

512G

0 Cel

SINGLE

R-XSMA-N

4398046511104 bit

TLC NAND TYPE

3.3

KSG6AZMV512G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

549755813888 words

3.3

8

MICROELECTRONIC ASSEMBLY

80 Cel

512GX8

512G

0 Cel

SINGLE

R-XSMA-N

4398046511104 bit

TLC NAND TYPE

3.3

KBG40ZNS1T02

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

1099511627776 words

3.3

8

MICROELECTRONIC ASSEMBLY

85 Cel

1TX8

1T

0 Cel

SINGLE

R-XSMA-N

8796093022208 bit

3.3

KBG3AZMS256G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

274877906944 words

3.3

8

MICROELECTRONIC ASSEMBLY

80 Cel

256GX8

256G

0 Cel

SINGLE

R-XSMA-N

2199023255552 bit

3.3

KBG3AZMS512G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

549755813888 words

3.3

8

MICROELECTRONIC ASSEMBLY

80 Cel

512GX8

512G

0 Cel

SINGLE

R-XSMA-N

4398046511104 bit

3.3

KXG6APNV2T04

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

2199023255552 words

3.3

8

MICROELECTRONIC ASSEMBLY

95 Cel

2TX8

2T

0 Cel

SINGLE

R-XSMA-N

17592186044416 bit

3.3

KXG6AZNV1T02

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

1099511627776 words

3.3

8

MICROELECTRONIC ASSEMBLY

95 Cel

1TX8

1T

0 Cel

SINGLE

R-XSMA-N

8796093022208 bit

3.3

KBG40ZNS512G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

549755813888 words

3.3

8

MICROELECTRONIC ASSEMBLY

85 Cel

512GX8

512G

0 Cel

SINGLE

R-XSMA-N

4398046511104 bit

3.3

KBG30ZMS512G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

549755813888 words

3.3

8

MICROELECTRONIC ASSEMBLY

80 Cel

512GX8

512G

0 Cel

SINGLE

R-XSMA-N

4398046511104 bit

3.3

KXG60PNV2T04

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

2199023255552 words

3.3

8

MICROELECTRONIC ASSEMBLY

95 Cel

2TX8

2T

0 Cel

SINGLE

R-XSMA-N

17592186044416 bit

3.3

KXG60ZNV256G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

274877906944 words

3.3

8

MICROELECTRONIC ASSEMBLY

95 Cel

256GX8

256G

0 Cel

SINGLE

R-XSMA-N

2199023255552 bit

TLC NAND TYPE

3.3

KSG6AZM81T02

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

1099511627776 words

3.3

8

MICROELECTRONIC ASSEMBLY

80 Cel

1TX8

1T

0 Cel

SINGLE

R-XSMA-N

8796093022208 bit

TLC NAND TYPE

3.3

KXG6AZNV256G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

274877906944 words

3.3

8

MICROELECTRONIC ASSEMBLY

95 Cel

256GX8

256G

0 Cel

SINGLE

R-XSMA-N

2199023255552 bit

3.3

KBG40ZNS128G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

137438953472 words

3.3

8

MICROELECTRONIC ASSEMBLY

85 Cel

128GX8

128G

0 Cel

SINGLE

R-XSMA-N

1099511627776 bit

3.3

KXG60ZNV1T02

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

1099511627776 words

3.3

8

MICROELECTRONIC ASSEMBLY

95 Cel

1TX8

1T

0 Cel

SINGLE

R-XSMA-N

8796093022208 bit

3.3

KSG6AZMV256G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

274877906944 words

3.3

8

MICROELECTRONIC ASSEMBLY

80 Cel

256GX8

256G

0 Cel

SINGLE

R-XSMA-N

2199023255552 bit

TLC NAND TYPE

3.3

KSG60ZM81T02

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

1099511627776 words

3.3

8

MICROELECTRONIC ASSEMBLY

80 Cel

1TX8

1T

0 Cel

SINGLE

R-XSMA-N

8796093022208 bit

TLC NAND TYPE

3.3

KBG40ZNS256G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

274877906944 words

3.3

8

MICROELECTRONIC ASSEMBLY

85 Cel

256GX8

256G

0 Cel

SINGLE

R-XSMA-N

2199023255552 bit

3.3

KXG6AZNV512G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

549755813888 words

3.3

8

MICROELECTRONIC ASSEMBLY

95 Cel

512GX8

512G

0 Cel

SINGLE

R-XSMA-N

4398046511104 bit

3.3

KXG60ZNV512G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

549755813888 words

3.3

8

MICROELECTRONIC ASSEMBLY

95 Cel

512GX8

512G

0 Cel

SINGLE

R-XSMA-N

4398046511104 bit

3.3

KBG30ZMS128G

Toshiba

FLASH MODULE

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

ASYNCHRONOUS

137438953472 words

3.3

8

MICROELECTRONIC ASSEMBLY

80 Cel

128GX8

128G

0 Cel

SINGLE

R-XSMA-N

1099511627776 bit

TLC NAND TYPE

3.3

MTFDDAK240MAV-1AE12ZHA

Micron Technology

FLASH MODULE

COMMERCIAL

22

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

257698037760 words

5

8

MICROELECTRONIC ASSEMBLY

70 Cel

3-STATE

240GX8

240G

0 Cel

SINGLE

R-XSMA-N22

5.5 V

7 mm

69.85 mm

2061584302080 bit

4.5 V

MLC NAND TYPE

100.45 mm

5

MTFDDAV128MAY-1AH12ACYY

Micron Technology

FLASH MODULE

COMMERCIAL

75

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

137438953472 words

3.3

8

MICROELECTRONIC ASSEMBLY

70 Cel

128GX8

128G

0 Cel

DUAL

R-XDMA-N75

3.46 V

3.58 mm

22 mm

1099511627776 bit

3.14 V

MLC NAND TYPE

80 mm

3.3

MTFDDAV480MAV-1AE12ACYY

Micron Technology

FLASH MODULE

COMMERCIAL

22

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

515396075520 words

5

8

MICROELECTRONIC ASSEMBLY

70 Cel

3-STATE

480GX8

480G

0 Cel

SINGLE

R-XSMA-N22

5.5 V

7 mm

69.85 mm

4123168604160 bit

4.5 V

MLC NAND TYPE

100.45 mm

5

MTFDDAT480MAV-1AE11ZZHA

Micron Technology

FLASH MODULE

COMMERCIAL

22

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

515396075520 words

5

8

MICROELECTRONIC ASSEMBLY

70 Cel

3-STATE

480GX8

480G

0 Cel

SINGLE

R-XSMA-N22

5.5 V

7 mm

69.85 mm

4123168604160 bit

4.5 V

MLC NAND TYPE

100.45 mm

5

MTFDDAV512MAY-1AE1ZAAYY

Micron Technology

FLASH MODULE

COMMERCIAL

75

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

549755813888 words

3.3

8

MICROELECTRONIC ASSEMBLY

70 Cel

512GX8

512G

0 Cel

DUAL

R-XDMA-N75

3.46 V

3.58 mm

22 mm

4398046511104 bit

3.14 V

MLC NAND TYPE

80 mm

3.3

MTFDDAV120MAV-1AE12ZHA

Micron Technology

FLASH MODULE

COMMERCIAL

22

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

128849018880 words

5

8

MICROELECTRONIC ASSEMBLY

70 Cel

3-STATE

120GX8

120G

0 Cel

SINGLE

R-XSMA-N22

5.5 V

7 mm

69.85 mm

1030792151040 bit

4.5 V

MLC NAND TYPE

100.45 mm

5

MTFDDAK960MAV-1AE12ZYY

Micron Technology

FLASH MODULE

COMMERCIAL

22

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

1030792151040 words

5

8

MICROELECTRONIC ASSEMBLY

70 Cel

3-STATE

960GX8

960G

0 Cel

SINGLE

R-XSMA-N22

5.5 V

7 mm

69.85 mm

8246337208320 bit

4.5 V

MLC NAND TYPE

100.45 mm

5

MTFDDAK120MAV-1AE11ABHA

Micron Technology

FLASH MODULE

COMMERCIAL

22

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

128849018880 words

5

8

MICROELECTRONIC ASSEMBLY

70 Cel

3-STATE

120GX8

120G

0 Cel

SINGLE

R-XSMA-N22

5.5 V

7 mm

69.85 mm

1030792151040 bit

4.5 V

MLC NAND TYPE

100.45 mm

5

MTFDDAK960MAV-1AE12ACHA

Micron Technology

FLASH MODULE

COMMERCIAL

22

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

1030792151040 words

5

8

MICROELECTRONIC ASSEMBLY

70 Cel

3-STATE

960GX8

960G

0 Cel

SINGLE

R-XSMA-N22

5.5 V

7 mm

69.85 mm

8246337208320 bit

4.5 V

MLC NAND TYPE

100.45 mm

5

MTFDDAK480MAV-1AE12ACHA

Micron Technology

FLASH MODULE

COMMERCIAL

22

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

515396075520 words

5

8

MICROELECTRONIC ASSEMBLY

70 Cel

3-STATE

480GX8

480G

0 Cel

SINGLE

R-XSMA-N22

5.5 V

7 mm

69.85 mm

4123168604160 bit

4.5 V

MLC NAND TYPE

100.45 mm

5

MTFDDAT120MAV-1AE12ZHA

Micron Technology

FLASH MODULE

COMMERCIAL

22

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

128849018880 words

5

8

MICROELECTRONIC ASSEMBLY

70 Cel

3-STATE

120GX8

120G

0 Cel

SINGLE

R-XSMA-N22

5.5 V

7 mm

69.85 mm

1030792151040 bit

4.5 V

MLC NAND TYPE

100.45 mm

5

MTFDDAT480MAV-2AH1ZZZYY

Micron Technology

FLASH MODULE

52

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

515396075520 words

3.3

8

MICROELECTRONIC ASSEMBLY

70 Cel

480GX8

480G

0 Cel

SINGLE

R-XSMA-N52

3.46 V

3.75 mm

29.85 mm

4123168604160 bit

3.14 V

MLC NAND TYPE

50.8 mm

3.3

MTFDDAV120MAV-1AE12ACYY

Micron Technology

FLASH MODULE

COMMERCIAL

22

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

128849018880 words

5

8

MICROELECTRONIC ASSEMBLY

70 Cel

3-STATE

120GX8

120G

0 Cel

SINGLE

R-XSMA-N22

5.5 V

7 mm

69.85 mm

1030792151040 bit

4.5 V

MLC NAND TYPE

100.45 mm

5

MTFDDAK120MAV-1AH1ZZZYY

Micron Technology

FLASH MODULE

22

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

128849018880 words

5

8

MICROELECTRONIC ASSEMBLY

70 Cel

120GX8

120G

0 Cel

SINGLE

R-XSMA-N22

5.5 V

7 mm

69.85 mm

1030792151040 bit

4.5 V

NOT SPECIFIED

NOT SPECIFIED

MLC NAND TYPE

100.5 mm

5

MTFDDAV512MAY-1AE12ZZYY

Micron Technology

FLASH MODULE

COMMERCIAL

75

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

549755813888 words

3.3

8

MICROELECTRONIC ASSEMBLY

70 Cel

512GX8

512G

0 Cel

DUAL

R-XDMA-N75

3.46 V

3.58 mm

22 mm

4398046511104 bit

3.14 V

MLC NAND TYPE

80 mm

3.3

MTFDDAK960MAV-1AE11ZYY

Micron Technology

FLASH MODULE

COMMERCIAL

22

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

1030792151040 words

5

8

MICROELECTRONIC ASSEMBLY

70 Cel

3-STATE

960GX8

960G

0 Cel

SINGLE

R-XSMA-N22

5.5 V

7 mm

69.85 mm

8246337208320 bit

4.5 V

MLC NAND TYPE

100.45 mm

5

MTFDDAV480MAV-1AE12ZYY

Micron Technology

FLASH MODULE

COMMERCIAL

22

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

515396075520 words

5

8

MICROELECTRONIC ASSEMBLY

70 Cel

3-STATE

480GX8

480G

0 Cel

SINGLE

R-XSMA-N22

5.5 V

7 mm

69.85 mm

4123168604160 bit

4.5 V

MLC NAND TYPE

100.45 mm

5

MTFDDAK960MAV-1AE12ABHA

Micron Technology

FLASH MODULE

COMMERCIAL

22

SMA

RECTANGULAR

UNSPECIFIED

NO

1

CMOS

NO LEAD

SERIAL

ASYNCHRONOUS

1030792151040 words

5

8

MICROELECTRONIC ASSEMBLY

70 Cel

3-STATE

960GX8

960G

0 Cel

SINGLE

R-XSMA-N22

5.5 V

7 mm

69.85 mm

8246337208320 bit

4.5 V

MLC NAND TYPE

100.45 mm

5

Flash Memory

Flash memory is a type of non-volatile computer memory that is commonly used in digital devices such as USB drives, solid-state drives, and digital cameras. It is a type of EEPROM (Electrically Erasable Programmable Read-Only Memory) that allows data to be erased and reprogrammed in blocks instead of one byte at a time. Flash memory uses a floating gate transistor to store data, which allows it to retain information even when the power is turned off.

Flash memory is widely used in digital devices because of its high capacity, small size, and fast access times. It is also more durable than other types of memory, such as hard disk drives, because it has no moving parts. This makes it ideal for use in portable devices that may be subject to physical shock or vibration.

There are two types of flash memory: NOR flash and NAND flash. NOR flash is faster than NAND flash, but it has lower density and higher cost per bit. NOR flash is typically used for code storage, such as firmware or boot code, because it provides faster access times. NAND flash has higher density and lower cost per bit, which makes it ideal for data storage applications.

Flash memory has a limited lifespan, as it can only be erased and reprogrammed a limited number of times. This is because the process of erasing and reprogramming the memory causes wear and tear on the floating gate transistor. However, modern flash memory devices have a sophisticated wear-leveling algorithm that distributes writes evenly across the memory, which extends the lifespan of the device.