M48Z128Y-85PM1
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STMicroelectronics M48Z128Y-85PM1

Manufacturer No:
M48Z128Y-85PM1
Manufacturer:
STMicroelectronics
Package:
Tube
Description:
IC NVSRAM 1MBIT PARALLEL 32PMDIP
Delivery:
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Product Introduction

Overview

The M48Z128Y-85PM1 is a non-volatile static RAM (SRAM) produced by STMicroelectronics. This device is part of the ZEROPOWER® RAM family, combining an internal lithium battery, a CMOS SRAM, and a control circuit within a single 32-pin DIP module. It is designed to provide a highly integrated battery-backed memory solution, ensuring data retention for up to 10 years in the absence of power. Although it is not recommended for new designs, it remains a viable option for existing systems due to its compatibility with JEDEC standard 128 K x 8 SRAMs and its ability to fit into many ROM, EPROM, and EEPROM sockets.

Key Specifications

Parameter Description Value
Capacity 128 Kbit x 8 131,072 words by 8 bits
Supply Voltage (VCC) 4.5 to 5.5 V
Power-Fail Deselect Voltage (VPFD) 4.2 to 4.5 V
Battery Backup Switchover Voltage (VSO) 3.0 V
Data Retention Time 10 years
Access Time 85 ns
Operating Temperature 0 to 70 °C
Package 32-pin DIP

Key Features

  • Integrated ultra-low power SRAM, power-fail control circuit, and battery.
  • Conventional SRAM operation with unlimited WRITE cycles.
  • Automatic power-fail chip deselect and WRITE protection.
  • Battery internally isolated until power is first applied.
  • Pin and function compatible with JEDEC standard 128 K x 8 SRAMs.
  • RoHS compliant with lead-free second level interconnect.

Applications

The M48Z128Y-85PM1 is suitable for various applications requiring non-volatile memory, such as:

  • Industrial control systems.
  • Medical devices.
  • Aerospace and defense systems.
  • Automotive systems.
  • Any system needing reliable, long-term data storage without the need for periodic refresh.

Q & A

  1. What is the capacity of the M48Z128Y-85PM1?

    The M48Z128Y-85PM1 has a capacity of 128 Kbit x 8, organized as 131,072 words by 8 bits.

  2. What is the supply voltage range for the M48Z128Y-85PM1?

    The supply voltage range is 4.5 to 5.5 V.

  3. What is the power-fail deselect voltage (VPFD) for the M48Z128Y-85PM1?

    The VPFD is between 4.2 and 4.5 V.

  4. How long does the battery maintain data in the absence of power?

    The battery maintains data for up to 10 years.

  5. Is the M48Z128Y-85PM1 compatible with standard SRAMs?

    Yes, it is pin and function compatible with JEDEC standard 128 K x 8 SRAMs.

  6. What is the operating temperature range for the M48Z128Y-85PM1?

    The operating temperature range is 0 to 70 °C.

  7. What type of package does the M48Z128Y-85PM1 come in?

    The device comes in a 32-pin DIP package.

  8. Is the M48Z128Y-85PM1 RoHS compliant?

    Yes, it is RoHS compliant with lead-free second level interconnect.

  9. Why is the M48Z128Y-85PM1 not recommended for new designs?

    Although it is still in production, it is not recommended for new designs due to the availability of more modern alternatives.

  10. How does the power-fail control circuit work?

    The control circuit monitors the VCC supply and automatically switches to battery power when VCC falls below the switchover voltage, ensuring data security and retention.

Product Attributes

Memory Type:Non-Volatile
Memory Format:NVSRAM
Technology:NVSRAM (Non-Volatile SRAM)
Memory Size:1Mb (128K x 8)
Memory Interface:Parallel
Clock Frequency:- 
Write Cycle Time - Word, Page:85ns
Access Time:85 ns
Voltage - Supply:4.5V ~ 5.5V
Operating Temperature:0°C ~ 70°C (TA)
Mounting Type:Through Hole
Package / Case:32-DIP Module (0.600", 15.24mm)
Supplier Device Package:32-PMDIP Module
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