256 Kbit (32 Kbit x 8) ZEROPOWER® SRAM

Download datasheet

Order from our eStore and our distributors

Buy now
Overview
Tools & Software
Resources
Solutions
Quality & Reliability
Sales Briefcase
eDesignSuite
Get Started
Sample & Buy
Partner products
  • The M48Z35/Y ZEROPOWER®RAM is a 32 K x 8, non-volatile static RAM that integrates power-fail deselect circuitry and battery control logic on a single die. The monolithic chip is available in two special packages to provide a highly integrated battery-backed memory solution.

    The M48Z35/Y is a non-volatile pin and function equivalent to any JEDEC standard 32 K x 8 SRAM. It also easily fits into many ROM, EPROM, and EEPROM sockets, providing the non-volatility of PROMs without any requirement for special WRITE timing or limitations on the number of WRITEs that can be performed. The 28-pin 600 mil DIP CAPHAThouses the M48Z35/Y silicon with a long life lithium button cell in a single package.
    The 28-pin 330 mil SOIC provides sockets with gold plated contacts at both ends for direct connection to a separate SNAPHAT®housing containing the battery. The unique design allows the SNAPHAT battery package to be mounted on top of the SOIC package after the completion of the surface mount process. Insertion of the SNAPHAT housing after reflow prevents potential battery damage due to the high temperatures required for device surface-mounting. The SNAPHAT housing is keyed to prevent reverse insertion.
    The SOIC and battery packages are shipped separately in plastic anti-static tubes or in tape & reel form.
    For the 28-lead SOIC, the battery package (i.e. SNAPHAT) part number is “M4Z28-BR00SH1.”

    Key Features

    • Integrated, ultra low power SRAM, power-fail control circuit, and battery
    • READ cycle time equals WRITE cycle time
    • Automatic power-fail chip deselect and WRITE protection
    • WRITE protect voltages: (VPFD= power-fail deselect voltage)
      • M48Z35: VCC= 4.75 to 5.5 V; 4.5 V ≤ VPFD≤ 4.75 V
      • M48Z35Y: 4.5 to 5.5 V; 4.2 V ≤ VPFD≤ 4.5 V
    • Self-contained battery in the CAPHATDIP package
    • Packaging includes a 28-lead SOIC and SNAPHAT®top (to be ordered separately)
    • Pin and function compatible with JEDEC standard 32 K x 8 SRAMs
    • SOIC package provides direct connection for a SNAPHAT®top which contains the battery
    • RoHS compliant
      • Lead-free second level interconnect

Circuit Diagram

Download Download

Sample & Buy

Part Number
Package
Packing Type
Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
More info
Order from Distributors
Order from ST
min
max
M48Z35Y-70PC1 PDIP 28 .7 Tube - -
Active
- EAR99
MORE INFO

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofM48Z35Y-70PC1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 224 1 Order Now
RS COMPONENTS EUROPE 1018 12 Order Now
FUTURE WORLDWIDE 348 12 Order Now
ARROW EUROPE 273 0 Order Now
Newark Element14 AMERICA 64 0 Order Now
ARROW AMERICA 450 240 Order Now
MOUSER WORLDWIDE 818 1 Order Now
Farnell Element14 EUROPE 351 1 Order Now
RUTRONIK EUROPE 84 12 Order Now

Distributor reported inventory date: 2019-08-20

Distributor Name

DIGIKEY

Stock

224

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1018

Min.Order

12

Region

EUROPE Order Now

FUTURE

Stock

348

Min.Order

12

Region

WORLDWIDE Order Now

ARROW

Stock

273

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

64

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

450

Min.Order

240

Region

AMERICA Order Now

MOUSER

Stock

818

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

351

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

84

Min.Order

12

Region

EUROPE Order Now

Distributor reported inventory date: 2019-08-20

Buy now
M48Z35Y-70MH1F SO-28 Tape And Reel - -
Active
6.585 10000 EAR99
MORE INFO

Country of Origin:

MALAYSIA

No availability of distributors reported, please contact our sales office

M48Z35Y-70PC1

Package

PDIP 28 .7

Packing Type

Tube

Unit Price (US$)

*

Distributor availability ofM48Z35Y-70PC1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 224 1 Order Now
RS COMPONENTS EUROPE 1018 12 Order Now
FUTURE WORLDWIDE 348 12 Order Now
ARROW EUROPE 273 0 Order Now
Newark Element14 AMERICA 64 0 Order Now
ARROW AMERICA 450 240 Order Now
MOUSER WORLDWIDE 818 1 Order Now
Farnell Element14 EUROPE 351 1 Order Now
RUTRONIK EUROPE 84 12 Order Now

Distributor reported inventory date: 2019-08-20

Distributor Name

DIGIKEY

Stock

224

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1018

Min.Order

12

Region

EUROPE Order Now

FUTURE

Stock

348

Min.Order

12

Region

WORLDWIDE Order Now

ARROW

Stock

273

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

64

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

450

Min.Order

240

Region

AMERICA Order Now

MOUSER

Stock

818

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

351

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

84

Min.Order

12

Region

EUROPE Order Now

Distributor reported inventory date: 2019-08-20

Operating Temperature (°C)

(min)

-

(max)

-

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

MALAYSIA

M48Z35Y-70MH1F

Package

SO-28

Packing Type

Tape And Reel

Unit Price (US$)

6.585*

Operating Temperature (°C)

(min)

-

(max)

-

Marketing Status

Active

Unit Price (US$)

6.585

Quantity

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Recommended for you

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS0523
      256 Kbit (32 Kbit X 8) ZEROPOWER® SRAM
      10.1
      408.96 KB
      PDF
      DS0523

      256 Kbit (32 Kbit X 8) ZEROPOWER® SRAM

    • Description Version Size Action
      AN1011
      Battery technology used in NVRAM and real-time clock (RTC) products from ST
      4.0
      248.17 KB
      PDF
      AN1009
      Negative undershoot NVRAM data corruption
      2.0
      82.05 KB
      PDF
      AN1012
      Predicting the battery life and data retention period of NVRAMs and serial RTCs
      4.1
      439.45 KB
      PDF
      AN1011

      Battery technology used in NVRAM and real-time clock (RTC) products from ST

      AN1009

      Negative undershoot NVRAM data corruption

      AN1012

      Predicting the battery life and data retention period of NVRAMs and serial RTCs

Quality & Reliability

    • Description Version Size Action
      Products Underwriter Laboratories (UL) Information 2.1
      543.21 KB
      PDF
      Products Underwriter Laboratories (UL) Information 2.1
      163 KB
      PDF

      Products Underwriter Laboratories (UL) Information

      Products Underwriter Laboratories (UL) Information

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
M48Z35Y-70MH1F
Active
SO-28 Industrial Ecopack1
M48Z35Y-70PC1
Active
PDIP 28 .7 Industrial Ecopack1

M48Z35Y-70MH1F

Package:

SO-28

Material Declaration**:

Marketing Status

Active

Package

SO-28

Grade

Industrial

RoHS Compliance Grade

Ecopack1

M48Z35Y-70PC1

Package:

PDIP 28 .7

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PDIP 28 .7

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.