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Renesas M5M5W816WG-55HI#BT
- Part No.:
- M5M5W816WG-55HI#BT
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- -
- Datasheet:
-
M5M5W816WG-55HI#BT.pdf
- Description:
- STANDARD SRAM, 512KX16, 55NS
- Quantity:
- Payment:
- Shipping:
Inventory:7,903
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Product details
Overview
M5M5W816WG-55HI#BT from Renesas Technology Corp. is a 8-Mbit (524,288 × 16-bit) CMOS static RAM with single 2.7–3.6 V supply, 55 ns access time at 3.0 V, and 0.1 µA standby current at 25°C. It features TTL-compatible I/O, no refresh requirement, and data retention down to 2.0 V-designed for compact, battery-backed memory systems in portable instrumentation and embedded controllers.
For engineers reviewing the M5M5W816WG-55HI#BT datasheet, M5M5W816WG-55HI#BT pinout, M5M5W816WG-55HI#BT application, or M5M5W816WG-55HI#BT equivalent, key selection criteria include low-voltage operation, byte-selectable write control (BC1#/BC2#), CSP package footprint constraints, and compatibility with legacy 16-bit parallel bus architectures requiring zero-refresh SRAM.
Technical Context
The M5M5W816WG-55HI#BT implements a fully static memory array using 0.18 µm CMOS process, eliminating clock and refresh circuitry. Its dual chip select (S1#, S2) and independent byte controls (BC1#, BC2#) enable flexible memory expansion and partial-word writes without external logic.
Three-state outputs support OR-tie bus sharing; OE# prevents contention during I/O bus arbitration. Power-down mode activates when S1# is high and S2 is low (or BC1#/BC2# high), reducing current to 0.1 µA while retaining data at Vcc ≥ 2.0 V-critical for battery backup integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8,388,608-bit (524,288 words × 16 bits) - supports full 16-bit parallel data bus interface |
| Access Time | 55 ns max at Vcc = 3.0 V - enables direct interfacing with microcontrollers operating up to ~12 MHz bus frequency |
| Supply Voltage | 2.7–3.6 V - compatible with Li-ion battery systems and regulated 3.3 V rails without level shifting |
| Standby Current | 0.1 µA typical at 25°C - extends battery life in always-on backup mode |
| Data Retention Voltage | 2.0 V minimum - ensures reliable memory hold during brown-out or battery switchover |
| Input/Output Compatibility | TTL-compatible - interfaces directly with standard 3.3 V logic families without buffers |
| Package Type | 48-ball CSP (7.5 mm × 8.5 mm, 0.75 mm pitch) - minimizes PCB area and enables high-density routing |
Pinout & Package
Package: 48-ball Chip Scale Package (CSP), outline 48F7Q, dimensions 7.5 mm × 8.5 mm, ball pitch 0.75 mm. Ball E3 must not be connected to voltage > 0 V.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Input | 19-bit address bus supporting full 524,288-word addressing |
| DQ1–DQ16 | Data I/O | 16-bit bidirectional data bus with three-state output drivers |
| S1#, S2 | Chip Select Inputs | Active-low S1# and active-high S2 enable hierarchical chip selection for banked memory |
| W#, OE# | Control Inputs | W# controls write strobe; OE# enables output drivers and prevents bus contention |
| BC1#, BC2# | Byte Control Inputs | Independent lower-byte (DQ1–DQ8) and upper-byte (DQ9–DQ16) write enable |
| Vcc, GND | Power Supply | Single 2.7–3.6 V supply; dedicated power/ground balls ensure stable core voltage |
Key Features
| Feature | Design Value |
|---|---|
| No refresh required | Fully static architecture eliminates timing-critical refresh cycles and associated controller overhead |
| Byte-selectable write | BC1# and BC2# allow independent 8-bit writes-reducing bus traffic and enabling efficient partial updates |
| Low-power standby | 0.1 µA typical current at 25°C enables multi-year battery backup without capacitor-based hold-up |
| TTL-compatible I/O | Direct connection to 3.3 V microcontroller buses without level translators or pull-up resistors |
| OR-tie capable outputs | Three-state DQ lines support wired-OR bus configurations for memory expansion without external multiplexers |
Applications
| Portable Medical Monitor | Industrial PLC Data Logger |
|---|---|
Use Scenario: Real-time waveform capture and temporary storage of ECG/SpO₂ data during battery-powered operation. IC Role / Device Role / Timing Role: Primary non-volatile buffer holding sampled sensor data prior to flash write or wireless transmission. Use Value: 2.0 V data retention and 0.1 µA standby current enable >10-year battery-backed memory hold without supercapacitors. | Use Scenario: Cyclic logging of machine status, temperature, and fault codes in factory-floor automation cabinets. IC Role / Device Role / Timing Role: High-reliability scratchpad memory for transient process variables between scan cycles. Use Value: 55 ns access time supports deterministic 12 MHz bus timing; byte-select writes reduce CPU overhead per log entry. |
| Avionics Display Controller | Test Equipment Firmware Cache |
Use Scenario: Frame buffer storage for monochrome cockpit display rendering under constrained SWaP-C conditions. IC Role / Device Role / Timing Role: Low-latency, zero-refresh video memory mapped into processor address space. Use Value: 7.5 mm × 8.5 mm CSP footprint saves board area vs. TSOP; TTL compatibility avoids signal integrity issues at 10+ MHz. | Use Scenario: Storing FPGA configuration bitstreams and calibration tables in automated test systems with frequent power cycling. IC Role / Device Role / Timing Role: Fast-access configuration store accessed during boot and runtime reconfiguration. Use Value: 55 ns read cycle allows sub-100 ns instruction fetch latency; S1#/S2 dual select supports multi-FPGA memory partitioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV8196AL-55QLI | 512K × 16-bit, 3.3 V only (3.0–3.6 V), 55 ns, 44-pin TSOP-II package | Larger footprint (10 mm × 20 mm), no battery-backup voltage margin below 3.0 V | Preferred where board space permits TSOP and system uses regulated 3.3 V only |
| AS6C8016-55PCN | 512K × 16-bit, 2.7–3.6 V, 55 ns, 44-pin SOP package, 1 µA standby current | Higher standby current (10×), larger SOP package, no CSP option | Selected when leaded packaging is required for manual assembly or legacy rework compatibility |
Compared with IS61LV8196AL-55QLI and AS6C8016-55PCN, the M5M5W816WG-55HI#BT uniquely combines ultra-low standby current (0.1 µA), 2.0 V data retention, and 7.5 mm × 8.5 mm CSP-making it optimal for space-constrained, battery-dependent systems where memory hold time and PCB real estate are critical.
Availability
M5M5W816WG-55HI#BT is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC data loggers, avionics display controllers, and test equipment firmware caches requiring stable component supply across extended product lifecycles.
Supply support for M5M5W816WG-55HI#BT 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
Renesas Technology Corp. was formed in 2003 through the merger of Hitachi and Mitsubishi Electric's semiconductor operations, specializing in microcontrollers, analog, power, and memory solutions.
The M5M5W816WG-55HI#BT belongs to Renesas' legacy low-voltage SRAM product line, engineered for compact, battery-operated systems demanding zero-refresh operation, wide supply tolerance, and minimal standby power.
FAQ
What is the maximum access time specification for the M5M5W816WG-55HI#BT?
The M5M5W816WG-55HI#BT has a maximum access time of 55 ns at Vcc = 3.0 V and Ta = 25°C. This value is guaranteed across the full industrial temperature range (-40°C to +85°C) when operated within its specified voltage window (2.7–3.6 V). The "55" in the part number explicitly denotes this speed grade, distinguishing it from the 70HI (70 ns) and 85HI (85 ns) variants.
Does the M5M5W816WG-55HI#BT require a refresh circuit?
No, the M5M5W816WG-55HI#BT is a fully static RAM and requires no refresh circuitry. Its internal design uses bistable latches that retain data indefinitely as long as power is applied within specifications. This eliminates timing-critical refresh cycles, simplifies system design, and removes associated CPU or controller overhead-making it ideal for deterministic real-time applications.
What is the minimum supply voltage at which the M5M5W816WG-55HI#BT retains stored data?
The M5M5W816WG-55HI#BT guarantees data retention down to 2.0 V, as confirmed in the Power Down Characteristics section of its datasheet. At this voltage, the device enters low-power standby mode with typical current draw of 0.1 µA, enabling robust battery backup operation during main power failure or controlled shutdown sequences.
Can the M5M5W816WG-55HI#BT interface directly with 3.3 V microcontrollers?
Yes, the M5M5W816WG-55HI#BT features TTL-compatible inputs and outputs, with VIH = 2.4 V min and VIL = 0.4 V max at Vcc = 3.0 V. Its output levels meet VOH ≥ 2.4 V (IOH = –0.5 mA) and VOL ≤ 0.4 V (IOL = 2 mA), ensuring reliable interoperability with standard 3.3 V logic families without level-shifting components.
What package type does the M5M5W816WG-55HI#BT use, and what are its mechanical dimensions?
The M5M5W816WG-55HI#BT uses a 48-ball Chip Scale Package (CSP) with outline code 48F7Q. Its physical dimensions are 7.5 mm × 8.5 mm with a ball pitch of 0.75 mm. The package includes specific handling notes: ball E3 must not be connected to any voltage exceeding 0 V, as stated in the pin configuration diagram.
M5M5W816WG-55HI#BT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- -
- Memory Format:
- -
- Technology:
- -
- Memory Size:
- -
- Memory Organization:
- -
- Memory Interface:
- -
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
M5M5W816WG-55HI#BT FAQ
1.How can I place an order for M5M5W816WG-55HI#BT through Aetrix?
Please submit a Request for Quotation (RFQ) for M5M5W816WG-55HI#BT 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 M5M5W816WG-55HI#BT reliable?
The price and inventory of M5M5W816WG-55HI#BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M5M5W816WG-55HI#BT is usually 5 days.
3.What payment methods are accepted for M5M5W816WG-55HI#BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M5M5W816WG-55HI#BT transactions.
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4.How is shipping managed for M5M5W816WG-55HI#BT?
M5M5W816WG-55HI#BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M5M5W816WG-55HI#BT 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 M5M5W816WG-55HI#BT?
For technical support, including M5M5W816WG-55HI#BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M5M5W816WG-55HI#BT requirements.
6.How does Aetrix verify that M5M5W816WG-55HI#BT is sourced from the original manufacturer or authorized distributors?
All M5M5W816WG-55HI#BT 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 M5M5W816WG-55HI#BT meets industry standards.
7.What is the process for return or replacement of M5M5W816WG-55HI#BT?
All M5M5W816WG-55HI#BT units undergo pre-shipment inspection (PSI). If there is an issue with M5M5W816WG-55HI#BT, 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 M5M5W816WG-55HI#BT part is unused and in its original packaging.
Return procedure for M5M5W816WG-55HI#BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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