Overview
The M48Z58Y-70MH1F is a non-volatile static RAM (SRAM) produced by STMicroelectronics. This device integrates ultra-low power SRAM, power-fail control circuitry, and battery control logic on a single die. It is designed to provide a highly integrated battery-backed memory solution, making it suitable for applications requiring data retention during power failures. The M48Z58Y is pin and function compatible with JEDEC standard 8 kbit x 8 SRAMs and can easily fit into many ROM, EPROM, and EEPROM sockets, offering the non-volatility of PROMs without special WRITE timing or limitations on the number of WRITEs.
Key Specifications
| Parameter | Test Condition | Min | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | - | 4.5 | 5.5 | V |
| Power-Fail Deselect Voltage (VPFD) | - | 4.2 | 4.5 | V |
| Ambient Operating Temperature (TA) | - | 0 | 70 | °C |
| Input Leakage Current (ILI) | 0 V ≤ VIN ≤ VCC | -1 | 1 | µA |
| Output Leakage Current (ILO) | 0 V ≤ VOUT ≤ VCC | -1 | 1 | µA |
| Supply Current (ICC) | Outputs open | - | 50 | mA |
| Supply Current (Standby) TTL (ICC1) | E = VIH | - | 3 | mA |
| Supply Current (Standby) CMOS (ICC2) | E = VCC – 0.2 V | - | 3 | mA |
| Input Low Voltage (VIL) | - | -0.3 | 0.8 | V |
| Input High Voltage (VIH) | - | 2.2 | VCC + 0.3 | V |
| Output Low Voltage (VOL) | IOL = 2.1 mA | - | 0.4 | V |
| Output High Voltage (VOH) | IOH = –1 mA | - | 2.4 | V |
Key Features
- Integrated ultra-low power SRAM, power-fail control circuit, and battery control logic on a single die.
- Automatic power-fail chip deselect and WRITE protection.
- WRITE protect voltages: VPFD = 4.2 to 4.5 V for M48Z58Y.
- Self-contained battery in the CAPHAT™ DIP package or separate SNAPHAT® top for SOIC package.
- Pin and function compatible with JEDEC standard 8 kbit x 8 SRAMs.
- RoHS compliant and lead-free second level interconnect.
- READ cycle time equals WRITE cycle time.
- Unique design allows SNAPHAT battery package to be mounted after surface mount process to prevent battery damage.
Applications
The M48Z58Y-70MH1F is suitable for various applications that require non-volatile memory and battery backup, such as:
- Industrial control systems where data retention during power failures is critical.
- Medical devices that need to maintain configuration settings.
- Aerospace and defense systems requiring reliable data storage.
- Automotive systems that need to retain settings and data.
- Any system requiring the non-volatility of PROMs without special WRITE timing or limitations.
Q & A
- What is the M48Z58Y-70MH1F?
The M48Z58Y-70MH1F is a non-volatile static RAM (SRAM) that integrates ultra-low power SRAM, power-fail control circuitry, and battery control logic on a single die.
- What are the key features of the M48Z58Y-70MH1F?
Key features include automatic power-fail chip deselect and WRITE protection, self-contained battery, and compatibility with JEDEC standard 8 kbit x 8 SRAMs.
- What are the power-fail deselect voltages for the M48Z58Y?
The power-fail deselect voltage (VPFD) for the M48Z58Y is between 4.2 V and 4.5 V.
- What types of packages are available for the M48Z58Y?
The M48Z58Y is available in 28-lead SOIC and CAPHAT™ DIP packages, with the SOIC package allowing a separate SNAPHAT® top for the battery.
- Is the M48Z58Y RoHS compliant?
Yes, the M48Z58Y is RoHS compliant and has a lead-free second level interconnect.
- What is the operating temperature range for the M48Z58Y?
The operating temperature range is from 0 to 70 °C.
- How does the battery backup work in the M48Z58Y?
The battery backup is provided by a lithium button cell in the CAPHAT™ DIP package or a separate SNAPHAT® top for the SOIC package, which maintains data during power failures.
- Can the SNAPHAT battery package be mounted after the surface mount process?
Yes, the unique design allows the SNAPHAT battery package to be mounted after the surface mount process to prevent battery damage from high temperatures.
- What are some typical applications for the M48Z58Y?
Typical applications include industrial control systems, medical devices, aerospace and defense systems, and automotive systems.
- How does the M48Z58Y protect data during power failures?
The M48Z58Y protects data through automatic power-fail chip deselect and WRITE protection, ensuring data security during unpredictable system operation.
