NVRAM

NVRAM (also known as Non-Volatile Random Access Memory) is a memory chip that stores data within an electronic circuit without applied power, meaning NVRAM is able to store data even when the power is turned off. This is unlike normal random access memory (RAM) and dynamic random access memory (DRAM), both of which lose memory when there is no power.

NVRAM memory is ideal for circuits that require a quick start up time as they are quick at reading and writing, which is why NVRAM is commonly found in devices such as laptops and mobile phones. However, they are not always suitable for main memory usage due to their limited memory sizes and power consumption, as NVRAM is battery powered and this, at some point, will need replacing. These devices come in a semiconductor package. Package types include: SIPP (single inline pin package), DIP (dual inline package), CERDIP (ceramic dual inline package) and PDIP (plastic inline package), among others.

RS Components offer a range of NVRAM components from Cypress Semiconductor, Maxim Integrated, and more trusted brands from across the industry.

Types of NVRAM

  • RTC/NVRAM are also known as CMOS chips (complimentary metal-oxide-semiconductor chips). These combine NVRAM with a real-time clock (RTC). The clock is there to read the date and time, which is stored by the NVRAM. RTC/NVRAM chips are designed for lower power consumption.
  • EEPROM stands for electrically erasable programmable read-only memory. It is a type of non-volatile memory which stores data that can be deleted and reprogrammed.
  • FRAM stands for ferroelectric RAM. It is similar in construction to DRAM, although its main difference is that it contains a thin later of zirconate titanate (PZT). The atoms in the PZT change polarity in an electric field, producing a binary switch. This allows the FRAM to retain its data memory, even when power is switched off, and also results in other benefits, such as extremely high endurance and ultra-low power consumption.

Where is NVRAM used?

NVRAM memory is used in any device that requires settings to be stored, such as the date and time, but can also be used by computer manufacturers to store details about the state of a computer. This allows the information to be retained between being switched off and being switched on again, resulting in faster boot times. Other typical applications for NVRAM include digital cameras, computers and computer monitors, smart cards, tablets, smartphones, and USB drives.


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Description Price Memory Size Organisation Interface Type Data Bus Width Maximum Random Access Time Mounting Type Package Type Pin Count Dimensions Length Width Height Maximum Operating Supply Voltage Maximum Operating Temperature
RS Stock No. 172-2331
Mfr. Part No.GR3281-HT
HK$659.715
Each (In a Box of 20)
units
256kbit 32K x 8 bit - 8bit 70ns Through Hole PDIP 28 37 x 18 x 7.3mm 37mm 18mm 7.3mm 5.5 V +85 °C
RS Stock No. 168-8020
Mfr. Part No.M48T18-150PC1
HK$241.027
Each (In a Tube of 12)
units
- - - - - Through Hole PCDIP 28 39.88 x 18.34 x 8.89mm 39.88mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 200-6583
Mfr. Part No.GR3281-HT
HK$727.46
Each
units
256kbit 32K x 8 bit - 8bit 70ns Through Hole PDIP 28 37 x 18 x 7.3mm 37mm 18mm 7.3mm 5.5 V +85 °C
RS Stock No. 828-9992
Mfr. Part No.M48T18-150PC1
HK$261.22
Each
units
- - - - - Through Hole PCDIP 28 39.88 x 18.34 x 8.89mm 39.88mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 436-8489
Mfr. Part No.M48T02-70PC1
HK$196.30
Each
units
16kbit 2K x 8 bit Parallel - - Through Hole PCDIP 24 34.8 x 18.34 x 8.89mm 34.8mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 168-6053
Mfr. Part No.M48Z08-100PC1
HK$181.755
Each (In a Tube of 12)
units
64kbit 8K x 8 bit Parallel 8bit 100ns Through Hole PCDIP 28 39.98 x 18.34 x 8.89mm 39.88mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 168-6070
Mfr. Part No.M48T08-150PC1
HK$251.93
Each (In a Tube of 12)
units
- 8K x 8 bit Parallel - 150ns Through Hole PCDIP 28 39.98 x 18.34 x 8.89mm 39.88mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 168-6052
Mfr. Part No.M48T08-100PC1
HK$200.435
Each (In a Tube of 12)
units
64kbit 8K x 8 bit Parallel - 100ns Through Hole PCDIP 28 39.98 x 18.34 x 8.89mm 39.88mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 189-2412
Mfr. Part No.M48T08-100PC1
HK$220.98
Each
units
64kbit 8K x 8 bit Parallel - 100ns Through Hole PCDIP 28 39.98 x 18.34 x 8.89mm 39.88mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 310-9661
Mfr. Part No.M48T08-150PC1
HK$277.76
Each
units
- 8K x 8 bit Parallel - 150ns Through Hole PCDIP 28 39.98 x 18.34 x 8.89mm 39.88mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 189-2428
Mfr. Part No.M48Z08-100PC1
HK$193.37
Each
units
64kbit 8K x 8 bit Parallel 8bit 100ns Through Hole PCDIP 28 39.98 x 18.34 x 8.89mm 39.88mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 168-8612
Mfr. Part No.M48T12-150PC1
HK$198.051
Each (In a Tube of 14)
units
- - - - - Through Hole PCDIP 24 34.8 x 18.34 x 8.89mm 34.8mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 168-6085
Mfr. Part No.M48T02-70PC1
HK$179.029
Each (In a Tube of 14)
units
16kbit 2K x 8 bit Parallel - - Through Hole PCDIP 24 34.8 x 18.34 x 8.89mm 34.8mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 829-4073
Mfr. Part No.M48T12-150PC1
HK$214.75
Each
units
- - - - - Through Hole PCDIP 24 34.8 x 18.34 x 8.89mm 34.8mm 18.34mm 8.89mm 5.5 V +70 °C
RS Stock No. 192-1518
Mfr. Part No.DS1220AB-200+
HK$152.87
Each
units
16kbit 2K x 8 bit Parallel 8bit 200ns Through Hole EDIP 24 34.04 x 18.29 x 9.4mm 34.04mm 18.29mm 9.4mm 5.25 V +70 °C
RS Stock No. 192-2296
Mfr. Part No.MXD1210CSA+
HK$71.08
Each
units
- - - - 20ns Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +70 °C
RS Stock No. 165-9305
Mfr. Part No.MXD1210CSA+
HK$37.316
Each (In a Tube of 100)
units
- - - - - Surface Mount SOIC 8 5 x 4 x 1.5mm 5mm 4mm 1.5mm 5.5 V +70 °C
RS Stock No. 189-7497
Mfr. Part No.DS1992L-F5+
HK$129.45
Each
units
1kbit 4 Pages x 256 bit 1-Wire - - - F5 MicroCan 2 17.35 x 17.35 x 5.89mm 17.35mm 17.35mm 5.89mm - +70 °C
RS Stock No. 172-2330
Mfr. Part No.GR881-HT
HK$858.446
Each (In a Box of 20)
units
64kbit 8K x 8 bit - 8bit 70ns Through Hole PDIP 28 37 x 18 x 7.3mm 37mm 18mm 7.3mm 5.5 V +85 °C
RS Stock No. 189-9244
Mfr. Part No.DS1230Y-120+
HK$286.36
Each
units
256kbit 32K x 8 bit Parallel 8bit 120ns Through Hole EDIP 28 39.12 x 18.8 x 9.4mm 39.12mm 18.8mm 9.4mm 5.5 V +70 °C