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  • The M48Z58/Y ZEROPOWER®RAM is an 8 Kbit 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 M48Z58/Y is a non-volatile pin and function equivalent to any JEDEC standard 8 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 M48Z58/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 (e.g., 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)
      • M48Z58: VCC= 4.75 to 5.5 V; 4.5 V ≤ VPFD≤ 4.75 V
      • M48Z58Y: VCC= 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)
    • SOIC package provides direct connection for a SNAPHAT®top which contains the battery
    • Pin and function compatible with JEDEC standard 8 Kbit x 8 SRAMs
    • RoHS compliant
      • Lead-free second level interconnect

Circuit Diagram

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Technical Documentation

    • Description Version Size Action
      DS0515
      5 V, 64 Kbit (8 Kbit x 8) ZEROPOWER® SRAM
      11.1
      412.32 KB
      PDF
      DS0515

      5 V, 64 Kbit (8 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

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
M48Z58-70PC1
Active
PDIP 28 .7 Industrial Ecopack2 (**)

M48Z58-70PC1

Package:

PDIP 28 .7

Material Declaration**:

Marketing Status

Active

Package

PDIP 28 .7

Grade

Industrial

RoHS Compliance Grade

Ecopack2 (**)

(**) 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.

Sample & Buy

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ECCN (US)
ECCN (EU)
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Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
M48Z58-70PC1 Available at 7 distributors

Distributor availability ofM48Z58-70PC1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 11 1 Order Now
RS COMPONENTS EUROPE 157 1 Order Now
FUTURE WORLDWIDE 384 12 Order Now
ARROW EUROPE 120 0 Order Now
ARROW AMERICA 90 240 Order Now
MOUSER WORLDWIDE 179 1 Order Now
Farnell Element14 EUROPE 83 1 Order Now

Distributor reported inventory date: 2020-08-13

Distributor Name

DIGIKEY

Stock

11

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

157

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

384

Min.Order

12

Region

WORLDWIDE Order Now

ARROW

Stock

120

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

90

Min.Order

240

Region

AMERICA Order Now

MOUSER

Stock

179

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

83

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-13

Buy now
Active
EAR99 NEC Tube PDIP 28 .7 - - MALAYSIA 8.82 / 1k

M48Z58-70PC1

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

8.82 / 1k

Distributor availability ofM48Z58-70PC1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 11 1 Order Now
RS COMPONENTS EUROPE 157 1 Order Now
FUTURE WORLDWIDE 384 12 Order Now
ARROW EUROPE 120 0 Order Now
ARROW AMERICA 90 240 Order Now
MOUSER WORLDWIDE 179 1 Order Now
Farnell Element14 EUROPE 83 1 Order Now

Distributor reported inventory date: 2020-08-13

Distributor Name

DIGIKEY

Stock

11

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

157

Min.Order

1

Region

EUROPE Order Now

FUTURE

Stock

384

Min.Order

12

Region

WORLDWIDE Order Now

ARROW

Stock

120

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

90

Min.Order

240

Region

AMERICA Order Now

MOUSER

Stock

179

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

83

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-13

ECCN (EU)

NEC

Packing Type

Tube

Package

PDIP 28 .7

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

8.82 / 1k

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