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. 189-9159
Mfr. Part No.DS1244Y-70+
SGD55.01
Each
units
256kbit 32K x 8 bit - - 70ns Through Hole EDIP 28 39.37 x 18.8 x 9.35mm 39.37mm 18.8mm 9.35mm 5 V +70 °C
RS Stock No. 194-9077
Mfr. Part No.CY14B104NA-BA45XI
SGD38.518
Each (In a Tray of 299)
units
4Mbit 256K x 16 bit Parallel 16bit 45ns Surface Mount FBGA 48 10 x 6 x 0.21mm 10mm 6mm 0.21mm 3.6 V +85 °C
RS Stock No. 194-9060
Mfr. Part No.CY14B101KA-SP45XI
SGD35.52
Each
units
1Mbit 128K x 8 bit Parallel 8bit 45ns Surface Mount SSOP 48 0.63 x 0.29 x 0.09in 16mm 7.37mm 2.29mm 3.6 V +85 °C
RS Stock No. 923-7602
Mfr. Part No.DS1244Y-70+
SGD44.604
Each (In a Tube of 12)
units
256kbit 32K x 8 bit - - 70ns Through Hole EDIP 28 39.37 x 18.8 x 9.35mm 39.37mm 18.8mm 9.35mm 5 V +70 °C
RS Stock No. 168-6072
Mfr. Part No.M48Z35Y-70PC1
SGD26.617
Each (In a Tube of 12)
units
256kbit 32K x 8 bit Parallel 8bit 70ns 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. 189-7469
Mfr. Part No.DS1245Y-120+
SGD60.596
Each (In a Tube of 11)
units
1Mbit 128K x 8 bit Parallel 8bit 120ns Through Hole EDIP 32 43.69 x 18.8 x 9.4mm 43.69mm 18.8mm 9.4mm 5.5 V +70 °C
RS Stock No. 798-4835
Mfr. Part No.DS1314S+
SGD12.474
Each (In a Tube of 45)
units
- - - - 20ns Surface Mount SOIC 16 10.5 x 7.6 x 2.35mm 10.5mm 7.6mm 2.35mm 3.6 V +85 °C
RS Stock No. 686-8552
Mfr. Part No.M48T35AV-10PC1
SGD37.44
Each
units
256kbit 32K x 8 bit Parallel 8bit 100ns Through Hole PCDIP 28 39.98 x 18.34 x 8.89mm 39.88mm 18.34mm 8.89mm 3.6 V +70 °C
RS Stock No. 132-839
Mfr. Part No.DS1245Y-70+
SGD55.72
Each
units
1Mbit 128K x 8 bit Parallel 8bit 70ns Through Hole EDIP 32 44.19 x 18.8 x 10.92mm 44.19mm 18.8mm 10.92mm 5.5 V +70 °C
RS Stock No. 194-9081
Mfr. Part No.CY14B104NA-ZSP45XI
SGD34.913
Each (In a Tray of 108)
units
4Mbit 256K x 16 bit Parallel 16bit 45ns Surface Mount TSOP 54 22.51 x 10.26 x 1.05mm 22.51mm 10.26mm 1.05mm 3.6 V +85 °C
RS Stock No. 191-4208
Mfr. Part No.DS1963S-F5+
SGD15.35
Each
units
- - - - - - - - - - - - - -
RS Stock No. 182-0321
Mfr. Part No.CY14B101LA-SZ25XI
SGD45.20
Each
units
1Mbit 128K x 8 bit - 8bit 25ns Surface Mount SOIC 32 20.87 x 7.59 x 2.29mm 20.87mm 7.59mm 2.29mm 3.6 V +85 °C
RS Stock No. 192-1528
Mfr. Part No.DS1744-70+
SGD44.19
Each
units
- - - - - Through Hole EDIP 28 39.37 x 18.8 x 10.67mm 39.37mm 18.8mm 10.67mm 0.8 V, 5.3 V +70 °C