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Renesas HM28100TTI5SE
- Part No.:
- HM28100TTI5SE
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
HM28100TTI5SE.pdf
- Description:
- IC SRAM 8MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:1,178
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Product details
Overview
HM28100TTI5SE from Renesas Electronics is a 8-Mbit (1,048,576-word × 8-bit) CMOS static RAM designed for high-density, low-power memory applications in industrial and embedded systems. It operates from a single 5.0 V ±10% supply, delivers 55 ns max access time, consumes only 7.5 µW typical standby current, and supports battery backup via dual chip select (CS1/CS2) control - enabling use in real-time clock modules and nonvolatile data logging systems.
For engineers reviewing the HM28100TTI5SE datasheet, HM28100TTI5SE pinout, HM28100TTI5SE application, or HM28100TTI5SE equivalent, key selection criteria include its wide temperature range (–40°C to +85°C), TSOP II 44-pin package compatibility, three-state bidirectional I/O interface, and verified data retention down to 2.0 V with sub-10 µA ICCDR at 3.0 V.
Technical Context
The HM28100TTI5SE implements a fully static 6-transistor memory cell architecture with no clocks or refresh required. Its control logic supports independent chip enable sequencing (CS1 active-low, CS2 active-low), write enable (WE) and output enable (OE) with overlapping timing windows defined per JEDEC-standard SRAM waveforms.
It features dual chip select architecture enabling selective power gating: CS2-driven data retention mode allows VCC reduction to 2.0 V while maintaining stored data, and CS1-controlled retention provides alternate entry into low-power state - both validated across –40°C to +85°C ambient operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 8 Mbit (1,048,576 × 8-bit) - supports 1 MB byte-addressable storage without external banking logic |
| Access time | 55 ns max - enables direct interfacing with 16–20 MHz microcontrollers without wait states |
| Supply voltage | 5.0 V ±10% - compatible with legacy 5 V TTL/CMOS system rails and industrial power supplies |
| Standby current | 0.8 µA typ at 3.0 V - enables multi-year battery backup in RTC and metering applications |
| Operating temperature | –40°C to +85°C - qualified for industrial-grade deployment in factory automation and telecom infrastructure |
| Data retention voltage | 2.0 V min - guarantees nonvolatile data hold during brownout or battery-switchover events |
| Package | 44-pin TSOP II (TTP-44DE) - surface-mount compatible with standard reflow profiles and high-density PCB layouts |
Pinout & Package
HM28100TTI5SE is housed in a 44-pin plastic TSOP II package (JEDEC MO-141AC, Hitachi code TTP-44DE), measuring 18.41 mm × 10.16 mm × 1.20 mm max, with gull-wing leads and 0.80 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address input | 20-bit address bus supporting full 1 MB addressing space; no address multiplexing required |
| I/O0–I/O7 | Bidirectional data bus | Three-state CMOS I/O with 2.1 mA sink / 1 mA source drive - interfaces directly with 5 V microcontroller data buses |
| CS1, CS2 | Chip select inputs | Independent enables: CS1 selects device; CS2 controls retention mode - enables hierarchical power management |
| WE | Write enable | Active-low asynchronous write strobe - initiates write on falling edge with 40 ns minimum pulse width |
| OE | Output enable | Active-low read strobe - places I/O pins in high-impedance state when deasserted to prevent bus contention |
| VCC, VSS | Power and ground | Dual VCC/VSS pairs (pins 21/22 and 36/37) reduce switching noise and improve signal integrity in high-speed access |
| NC | No connection | Pins 7, 8, 15, 16, 27, 28, 31, 32 - must remain unconnected; no internal bonding or function |
Key Features
| Feature | Design Value |
|---|---|
| Fully static operation | No clocks, no refresh cycles - eliminates timing controller overhead and reduces system-level power management complexity |
| Dual chip select for battery backup | CS2-driven retention mode enables seamless transition to ultra-low-power data hold without external switches or regulators |
| Low active power dissipation | 10 mW/MHz typical - minimizes thermal load in enclosed industrial enclosures and fanless designs |
| Equal access and cycle times | tRC = tAA = 55 ns - simplifies timing budget allocation and eliminates need for variable wait-state insertion |
| Wide temperature operation | –40°C to +85°C industrial grade - qualified per Renesas Standard quality grade for factory automation and test equipment |
Applications
| Industrial Data Logger | Real-Time Clock Module |
|---|---|
Use Scenario: Continuous timestamped sensor data capture in programmable logic controllers with periodic power interruption. IC Role / Device Role / Timing Role: Primary nonvolatile buffer storing up to 1 MB of pre-processed telemetry before SD card or network upload. Use Value: Dual CS architecture allows CS2-triggered retention at 2.0 V, sustaining data integrity during 10+ second AC dropout events without supercapacitor support. | Use Scenario: Timekeeping subsystem in smart energy meters requiring tamper-resistant time stamping across mains failure. IC Role / Device Role / Timing Role: Battery-backed SRAM holding calendar registers, alarm flags, and event counters synchronized to RTC oscillator. Use Value: 7.5 µW typical standby current extends CR2032 battery life beyond 10 years while retaining full 8 Mbit capacity for firmware patch storage. |
| Telecom Line Card Buffer | Medical Diagnostic Instrument Cache |
Use Scenario: Packet buffering in carrier-grade DSLAM line cards operating in uncontrolled temperature environments. IC Role / Device Role / Timing Role: High-speed temporary storage for ATM cell reassembly and QoS tagging prior to backplane transmission. Use Value: 55 ns access time ensures zero-latency forwarding under 100 Mbps line rates; TSOP II package supports dense multi-SRAM placement on compact line card PCBs. | Use Scenario: Image metadata and calibration parameter cache in portable ultrasound devices with strict EMI and thermal constraints. IC Role / Device Role / Timing Role: Low-noise, low-power scratchpad memory for DICOM header generation and transducer calibration lookup tables. Use Value: Dual VCC/VSS pin pairing suppresses switching noise coupling into analog front-end circuits, preserving SNR in 12-bit ADC paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV8196AL-10TLI | 3.3 V supply only; 10 ns access time; 48-pin TSOP I package | Requires level-shifting for 5 V systems; higher speed but incompatible voltage domain | Select only if migrating to 3.3 V architecture and needing faster access - not drop-in compatible |
| AS6C8008-55PCN | 5 V supply; 55 ns access; 44-pin SOJ package (not TSOP II); 15 mA ICC active | Larger footprint and higher active current; lacks CS2-driven retention mode | Acceptable for cost-sensitive 5 V designs where battery backup is handled externally |
Compared with HM28100TTI5SE, IS61LV8196AL-10TLI offers superior speed but mandates full 3.3 V system redesign, while AS6C8008-55PCN matches voltage and timing but sacrifices retention flexibility and increases thermal load - making HM28100TTI5SE optimal for industrial 5 V systems requiring robust low-power data hold.
Availability
HM28100TTI5SE is available at Aetrix Electronics and suitable for industrial data loggers, real-time clock modules, telecom line cards, and medical diagnostic instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for HM28100TTI5SE 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 Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT applications.
The HM628100I Series - including HM28100TTI5SE - was developed as a high-reliability, wide-temperature 5 V SRAM family targeting industrial control, instrumentation, and legacy-system memory upgrades where pin-compatible replacement and long-term supply stability are critical.
FAQ
What is the maximum operating frequency supported by HM28100TTI5SE?
The HM28100TTI5SE does not operate on a clock signal - it is a fully static RAM with no internal timing generator. Its performance is defined by access and cycle times: maximum 55 ns for both read and write operations. This corresponds to a theoretical maximum bus transaction rate of ~18.2 MHz when using minimum valid timing margins, assuming compatible 5 V microcontroller or ASIC interface logic.
Does HM28100TTI5SE support true battery backup without external circuitry?
Yes. HM28100TTI5SE supports battery backup natively via its dual chip select architecture: asserting CS2 low (or within 0–0.2 V or VCC–0.2 V) while holding CS1 high places the device into data retention mode, allowing VCC reduction to as low as 2.0 V while preserving stored data with only ~0.8 µA typical current draw - no external switches, diodes, or regulators are required.
Is HM28100TTI5SE pin-compatible with other 44-pin TSOP SRAMs like HM628128 or AS6C8008?
HM28100TTI5SE shares the same 44-pin TSOP II (TTP-44DE) mechanical footprint and pinout as the HM628100LTTI-5SL and other members of the HM628100I Series, but is not pin-compatible with HM628128 (which uses different address depth and pin assignments) or AS6C8008 (SOJ package, different pin mapping). Always verify address width, I/O configuration, and control signal polarity before substitution.
What is the meaning of "TTI5SE" in HM28100TTI5SE?
In HM28100TTI5SE, "TT" denotes TSOP II package, "I" indicates industrial temperature grade (–40°C to +85°C), "5" specifies 55 ns access time, "S" signifies standard reliability grade, and "E" reflects Renesas' internal revision or eco-friendly compliance coding - consistent with Renesas' post-merger part numbering conventions established after the 2010 NEC/Renesas integration.
Can HM28100TTI5SE be used in automotive applications?
No. HM28100TTI5SE is rated as a Renesas "Standard" quality grade device intended for industrial, office, and communications equipment - not for automotive, medical life-support, or aerospace applications. Its qualification excludes AEC-Q100 stress testing, and Renesas explicitly prohibits use in transportation systems without prior written consent per document Notice #5 and #7.
HM28100TTI5SE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM
- Memory Size:
- 8Mbit
- Memory Organization:
- 1M x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 55ns
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
HM28100TTI5SE FAQ
1.How can I place an order for HM28100TTI5SE through Aetrix?
Please submit a Request for Quotation (RFQ) for HM28100TTI5SE 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 HM28100TTI5SE reliable?
The price and inventory of HM28100TTI5SE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HM28100TTI5SE is usually 5 days.
3.What payment methods are accepted for HM28100TTI5SE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HM28100TTI5SE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HM28100TTI5SE?
HM28100TTI5SE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HM28100TTI5SE 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 HM28100TTI5SE?
For technical support, including HM28100TTI5SE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HM28100TTI5SE requirements.
6.How does Aetrix verify that HM28100TTI5SE is sourced from the original manufacturer or authorized distributors?
All HM28100TTI5SE 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 HM28100TTI5SE meets industry standards.
7.What is the process for return or replacement of HM28100TTI5SE?
All HM28100TTI5SE units undergo pre-shipment inspection (PSI). If there is an issue with HM28100TTI5SE, 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 HM28100TTI5SE part is unused and in its original packaging.
Return procedure for HM28100TTI5SE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HM28100TTI5SE Tags
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