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. 310-9734
Mfr. Part No.M48Z35Y-70PC1
MYR74.36
Each
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. 146-1106
Mfr. Part No.DS1230AB-70+
MYR85.64
Each (In a Tube of 12)
units
256kbit 32K x 8 bit Parallel 8bit 70ns Through Hole EDIP 28 39.12 x 18.8 x 9.4mm 39.12mm 18.8mm 9.4mm 5.25 V +70 °C
RS Stock No. 811-1054
Mfr. Part No.M48Z12-150PC1
MYR39.94
Each
units
16kbit 2K x 8 - 8bit 5ns 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. 194-9077
Mfr. Part No.CY14B104NA-BA45XI
MYR125.51
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. 192-1674
Mfr. Part No.DS1225AD-85+
MYR82.71
Each
units
64kbit 8K x 8 bit - - 70ns Through Hole EDIP 28 39.37 x 18.29 x 10.67mm 39.37mm 18.29mm 10.67mm 5.5 V +85 °C
RS Stock No. 132-817
Mfr. Part No.DS1230AB-120+
MYR112.09
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 5.25 V +70 °C
RS Stock No. 189-9179
Mfr. Part No.DS1220AD-200+
MYR62.53
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 5.5 V +70 °C
RS Stock No. 132-643
Mfr. Part No.DS1220AB-200+
MYR70.38
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. 194-9060
Mfr. Part No.CY14B101KA-SP45XI
MYR105.08
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. 194-9068
Mfr. Part No.CY14B101NA-ZS45XI
MYR110.63
Each
units
1Mbit 64K x 16 bit Parallel 16bit 45ns Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 18.51mm 10.26mm 1.04mm 3.6 V +85 °C
RS Stock No. 200-6583
Mfr. Part No.GR3281-HT
MYR248.69
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. 194-9064
Mfr. Part No.CY14B101LA-SP45XI
MYR124.44
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. 194-9093
Mfr. Part No.CY14V101Q3-SFXI
MYR44.105
Each (In a Tube of 46)
units
1Mbit 128K x 8 bit SPI 8bit 25ns Surface Mount SOIC 16 10.49 x 7.59 x 2.36mm 10.49mm 7.59mm 2.36mm 3.6 V +85 °C
RS Stock No. 132-839
Mfr. Part No.DS1245Y-70+
MYR157.02
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. 189-7466
Mfr. Part No.DS1243Y-120+
MYR94.891
Each (In a Tube of 12)
units
- - Parallel - 120ns Through Hole EDIP 28 39.37 x 18.29 x 10.67mm 39.37mm 18.29mm 10.67mm 5.5 V +70 °C
RS Stock No. 194-9076
Mfr. Part No.CY14B104NA-BA25XI
MYR139.27
Each
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. 310-9661
Mfr. Part No.M48T08-150PC1
MYR109.21
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