NVRAM

NVRAM (Non –Volatile Random-Access Memory ) is a memory chip that stores data within an electronic circuit. NVRAM is able to store data even when the power is turned off. This is unlike RAM and DRAM 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. However, they are not always suitable for main memory usage, due to limited memory sizes and power consumption. NVRAM is battery-back which, 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)

Types of NVRAM:

  • RTC/NVRAM are also known as CMOS chips. They 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 uses a ferroelectric later for non-volatility. 
  • MRAM is magnetoresistive RAM. It stores its data within magnetic domains. 

Where is NVRAM used?

NVRAM memory is used in any device that requires settings to be stored, such as the date and time. This includes:

  • Cameras
  • Computer Monitors
  • Smart Cards
  • Tablets
  • Smartphones
  • 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. 310-9655
Mfr. Part No.M48T02-150PC1
SGD22.41
Each
units
16kbit 2K x 8 bit Parallel - 150ns 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. 168-7906
Mfr. Part No.M48Z35-70PC1
SGD19.951
Each (In a Tube of 12)
units
256kbit 32K x 8 - 8bit 5ns Through Hole PCDIP 28 39.88 x 18.34 x 9.65mm 39.88mm 18.34mm 9.65mm 5.5 V +70 °C
RS Stock No. 200-6577
Mfr. Part No.GR881-HT
SGD87.25
Each
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. 103-1428
Mfr. Part No.M48Z02-70PC1
SGD9.459
Each (In a Tube of 14)
units
16kbit 2K x 8 bit Parallel 8bit 70ns 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. 310-9683
Mfr. Part No.M48T35-70PC1
SGD37.81
Each
units
32kbit - Parallel - 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. 200-6612
Mfr. Part No.GR3281-7
SGD117.97
Each
units
256kbit 32K x 8 bit Parallel 8bit 70ns Through Hole - 28 37 x 18 x 7.3mm 37mm 18mm 7.3mm 5.5 V +70 °C
RS Stock No. 191-5735
Mfr. Part No.DS1225AD-70IND+
SGD28.38
Each
units
64kbit 8K x 8 - - 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. 189-9223
Mfr. Part No.DS1230Y-100+
SGD37.24
Each
units
256kbit 32K x 8 bit - - 100ns Through Hole EDIP 28 39.37 x 18.8 x 9.35mm 39.37mm 18.8mm 9.35mm 5.5 V +85 °C
RS Stock No. 194-9063
Mfr. Part No.CY14B101LA-SP45XI
SGD36.94
Each (In a Tube of 30)
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. 168-6483
Mfr. Part No.M48T35AV-10PC1
SGD32.19
Each (In a Tube of 12)
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. 189-9179
Mfr. Part No.DS1220AD-200+
SGD21.08
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. 189-9137
Mfr. Part No.DS1243Y-120+
SGD35.46
Each
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. 194-9064
Mfr. Part No.CY14B101LA-SP45XI
SGD40.51
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. 194-9062
Mfr. Part No.CY14B101LA-SP25XI
SGD39.60
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. 194-9056
Mfr. Part No.CY14B101J2-SXI
SGD14.11
Each
units
1Mbit 128K x 8 bit - 8bit 25ns Surface Mount SOIC 8 4.97 x 3.98 x 1.47mm 4.97mm 3.98mm 1.47mm 3.6 V +85 °C
RS Stock No. 191-5737
Mfr. Part No.DS1230AB-70IND+
SGD33.02
Each
units
256kbit 32K x 8 - - 70ns Through Hole EDIP 28 39.37 x 18.8 x 10.67mm 39.37mm 18.8mm 10.67mm 5.25 V +85 °C
RS Stock No. 189-7461
Mfr. Part No.DS1230Y-120+
SGD34.075
Each (In a Tube of 12)
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
RS Stock No. 134-469
Mfr. Part No.DS1230AB-100+
SGD32.75
Each
units
256kbit 32K x 8 bit Parallel 8bit 100ns 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. 194-9065
Mfr. Part No.CY14B101NA-ZS25XI
SGD25.286
Each (In a Tray of 135)
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. 169-8242
Mfr. Part No.DS1230AB-100+
SGD30.50
Each (In a Tube of 12)
units
256kbit 32K x 8 bit Parallel 8bit 100ns Through Hole EDIP 28 39.12 x 18.8 x 9.4mm 39.12mm 18.8mm 9.4mm 5.25 V +70 °C