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STMicroelectronics M48Z02-150PC1
- Part No.:
- M48Z02-150PC1
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 24-DIP Module (0.600", 15.24mm)
- Datasheet:
-
M48Z02-150PC1.pdf
- Description:
- IC NVSRAM 16KBIT PAR 24PCDIP
- Quantity:
- Payment:
- Shipping:
Inventory:179
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Product details
Overview
M48Z02-150PC1 from STMicroelectronics is a 16 kbit (2 Kb × 8) non-volatile ZEROPOWER® SRAM with integrated lithium battery, CAPHAT™ DIP package, 150 ns access time, and automatic power-fail write protection. It operates at 4.75–5.5 V, retains data for ≥10 years in battery backup mode, and replaces standard JEDEC 2K×8 SRAMs in real-time clock, configuration storage, and industrial controller memory applications.
For engineers reviewing the M48Z02-150PC1 datasheet, M48Z02-150PC1 pinout, M48Z02-150PC1 application, or M48Z02-150PC1 equivalent, this page delivers verified timing parameters, battery-backed retention behavior, VPFD voltage thresholds, pin-level interface compatibility with DS1220, and design-critical noise immunity guidance for VCC transient suppression.
Technical Context
The M48Z02-150PC1 integrates a 2 K × 8 static RAM array, ultra-low-power voltage-sensing circuitry, and a sealed lithium button cell within a 24-pin PDIP CAPHAT™ package. Its power-fail detection triggers write protection when VCC falls between 4.5 V and 4.75 V (VPFD window), then switches to battery backup below ~3.0 V (VSO).
It supports standard SRAM read/write cycles with identical tAVQV and tAVAV of 150 ns, full three-state output control via E/G/W signals, and automatic BOK (Battery OK) flag checking on power-up to prevent writes with degraded battery voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 kbit (2 K × 8); provides byte-wide non-volatile storage without external battery management. |
| Access time | 150 ns; ensures compatibility with legacy 8-bit microcontrollers and bus interfaces requiring ≤150 ns cycle timing. |
| VCC range | 4.75–5.5 V; matches standard +5 V logic rails and tolerates typical supply ripple without dropout-induced corruption. |
| VPFD range | 4.5–4.75 V; defines precise voltage window where chip deselect and write protection activate before data loss occurs. |
| Data retention | ≥10 years at 0–70 °C; guaranteed by integrated lithium carbon monofluoride cell with no user-replaceable battery. |
| Package | 24-pin PDIP (600 mil), CAPHAT™; enables drop-in replacement in existing 2K×8 SRAM sockets without PCB redesign. |
| RoHS status | Lead-free second-level interconnect; compliant with EU RoHS Directive 2011/65/EU and related exemptions. |
Pinout & Package
24-pin plastic dual in-line package (PDIP) with integrated CAPHAT™ battery housing; 600 mil width, 0.1 inch pin pitch, body dimensions 34.29 mm × 17.83 mm × 9.27 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A10 | Address inputs | 11-bit address bus selecting one of 2,048 bytes; compatible with JEDEC-standard 2K×8 addressing. |
| DQ0–DQ7 | Data I/O lines | Bi-directional 8-bit data path; three-state controlled by E and G for bus sharing. |
| E | Chip enable | Active-low signal enabling memory access; high-Z outputs when deasserted, critical for power-fail isolation. |
| G | Output enable | Active-low signal controlling output drivers; allows read data gating independent of chip select. |
| W | Write enable | Active-low signal initiating write cycles; falling edge synchronizes data latch timing per AC specs. |
| VCC | Supply voltage | +5 V primary power input; monitored continuously for VPFD detection and battery switchover at VSO ≈ 3.0 V. |
| VSS | Ground | Reference return path for all logic and analog sensing circuits; must be low-impedance to avoid BOK flag misreads. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated lithium battery | Sealed CAPHAT™-housed LiCFx cell delivering ≥10 years data retention without external components or maintenance. |
| Automatic power-fail response | Hardware-level VPFD detection and write protection activation within defined 4.5–4.75 V window-no firmware intervention required. |
| Unlimited write endurance | No wear-out mechanism; supports infinite WRITE cycles unlike EEPROM or Flash, ideal for frequently updated configuration registers. |
| DS1220 pin/function compatibility | Direct socket replacement for Dallas/Maxim DS1220; eliminates redesign risk in legacy industrial and telecom systems. |
| Battery OK (BOK) flag | Hardware flag set on power-up if battery voltage is insufficient; blocks first write until cleared, preventing silent data corruption. |
Applications
| Real-Time Clock (RTC) Backup | Industrial PLC Configuration Storage |
|---|---|
|
Use Scenario: Maintaining time/date and alarm settings across AC power outages in embedded RTC modules. IC Role / Device Role / Timing Role: Non-volatile memory holding RTC registers and calibration constants during main power loss. Use Value: Eliminates need for external battery holder, diode, and capacitor; guarantees 10-year retention without periodic maintenance. |
Use Scenario: Storing ladder logic parameters, I/O mapping, and calibration offsets in programmable logic controllers. IC Role / Device Role / Timing Role: Retentive memory preserving operational state and user-defined configurations after unexpected shutdown. Use Value: Prevents factory re-commissioning after brownouts; maintains machine-specific settings across decades of deployment. |
| Medical Device Setup Memory | Point-of-Sale Terminal Transaction Logs |
|
Use Scenario: Holding patient-specific therapy profiles and device calibration data in portable infusion pumps and monitors. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage of regulatory-critical setup values during battery swaps or power cycling. Use Value: Meets IEC 62304 Class B software safety requirements by ensuring zero data loss during power transitions. |
Use Scenario: Buffering last-transaction records and tax register states in retail terminals during grid instability. IC Role / Device Role / Timing Role: Atomic write-capable memory capturing sales data even during instantaneous power failure. Use Value: Avoids revenue loss and reconciliation errors by guaranteeing transaction integrity without supercapacitor support. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar non-volatile SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS1220Y-150+ | Same 2K×8 capacity, 150 ns speed, but uses soldered lithium battery with shorter rated retention (10 years typical vs. guaranteed); no BOK flag. | Lacks hardware battery health check; requires external reset sequencing to avoid writes on weak battery. | Select when cost sensitivity outweighs BOK-driven reliability assurance and long-term field serviceability. |
| M48Z12-150PC1 | Identical package and timing, but lower VPFD window (4.2–4.5 V) and wider VCC range (4.5–5.5 V); same 10-year retention. | Better suited for systems with noisy or loosely regulated 5 V rails where earlier write-protection activation is preferred. | Select when system VCC may dip near 4.5 V during brownouts and early fail-safe response is prioritized over margin at nominal 5 V. |
Compared with DS1220Y-150+, M48Z02-150PC1 adds BOK flag enforcement and guaranteed retention; compared with M48Z12-150PC1, it offers tighter VPFD alignment with stable +5 V supplies, reducing false-trigger risk in clean-rail environments.
Availability
M48Z02-150PC1 is available at Aetrix Electronics and suitable for industrial automation controllers, medical instrumentation, point-of-sale terminals, and telecommunications infrastructure requiring stable component supply with guaranteed 10-year data retention and JEDEC-compatible footprint.
Supply support for M48Z02-150PC1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, microcontroller, power, and memory solutions for industrial, automotive, and consumer markets.
M48Z02-150PC1 belongs to ST's ZEROPOWER® SRAM product line, engineered specifically for seamless, maintenance-free non-volatility in legacy +5 V systems where battery-backed memory must operate without firmware dependency or external supervision.
FAQ
What is the guaranteed data retention period for M48Z02-150PC1?
The M48Z02-150PC1 guarantees ≥10 years of data retention in battery backup mode at 0–70 °C ambient temperature. This is achieved using a hermetically sealed lithium carbon monofluoride (LiCFx) button cell housed within the CAPHAT™ package, with no degradation-based wear-out mechanism.
How does the Battery OK (BOK) flag function during power-up?
On power-up, the M48Z02-150PC1 checks internal battery voltage against a threshold. If below specification, the BOK flag is set, blocking the first WRITE attempt. The flag clears automatically after that first write completes successfully, resuming normal operation-preventing silent data corruption from marginal battery voltage.
Can M48Z02-150PC1 replace DS1220 in existing sockets without modification?
Yes-M48Z02-150PC1 is pin and function compatible with DS1220, including identical 24-pin PDIP footprint, address/data/control signal mapping, and timing behavior. No PCB or firmware changes are needed for drop-in replacement in legacy designs.
What protection is recommended against VCC negative transients during battery backup mode?
STMicroelectronics recommends placing a Schottky diode (e.g., 1N5817 for through-hole, MBRS120T3 for SMT) cathode-to-VCC and anode-to-VSS. This clamps negative spikes below –0.3 V-preventing data corruption during battery backup, as undershoots beyond this level are strictly prohibited per absolute maximum ratings.
M48Z02-150PC1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 24-DIP Module (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- NVSRAM
- Technology:
- NVSRAM (Non-Volatile SRAM)
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 150ns
- Access Time:
- 150 ns
- Voltage - Supply:
- 4.75V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 24-PCDIP, CAPHAT®
M48Z02-150PC1 FAQ
1.How can I place an order for M48Z02-150PC1 through Aetrix?
Please submit a Request for Quotation (RFQ) for M48Z02-150PC1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for M48Z02-150PC1 reliable?
The price and inventory of M48Z02-150PC1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M48Z02-150PC1 is usually 5 days.
3.What payment methods are accepted for M48Z02-150PC1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M48Z02-150PC1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M48Z02-150PC1?
M48Z02-150PC1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M48Z02-150PC1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for M48Z02-150PC1?
For technical support, including M48Z02-150PC1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M48Z02-150PC1 requirements.
6.How does Aetrix verify that M48Z02-150PC1 is sourced from the original manufacturer or authorized distributors?
All M48Z02-150PC1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that M48Z02-150PC1 meets industry standards.
7.What is the process for return or replacement of M48Z02-150PC1?
All M48Z02-150PC1 units undergo pre-shipment inspection (PSI). If there is an issue with M48Z02-150PC1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The M48Z02-150PC1 part is unused and in its original packaging.
Return procedure for M48Z02-150PC1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M48Z02-150PC1 Tags
-
M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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