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Renesas X28HC64JIZ-12T1
- Part No.:
- X28HC64JIZ-12T1
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
X28HC64JIZ-12T1.pdf
- Description:
- IC EEPROM 64KBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,953
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Product details
Overview
X28HC64JIZ-12T1 from Intersil is a 64 kbit (8k × 8) byte-alterable EEPROM operating from a single 5 V supply, featuring 120 ns access time, JEDEC-standard byte-wide pinout, and 64-byte page write capability enabling full memory rewrite in 0.25 s. It delivers 100,000 write cycles and 100-year data retention for nonvolatile configuration storage in industrial control modules.
For engineers reviewing the X28HC64JIZ-12T1 datasheet, X28HC64JIZ-12T1 pinout, X28HC64JIZ-12T1 application, or X28HC64JIZ-12T1 equivalent, key selection criteria include industrial temperature range (–40°C to +85°C), RoHS-compliant 32-lead PLCC package, software/hardware data protection, and dual end-of-write detection (DATA polling on I/O7, Toggle Bit on I/O6).
Technical Context
The X28HC64JIZ-12T1 implements a floating-gate CMOS EEPROM array with two-line control architecture (CE/OE for reads, CE/WE for writes), supporting both byte and page write modes without prior erase. Its self-timed internal programming eliminates external timing circuitry and complex algorithms.
It integrates hardware write inhibition via VCC sense (write disabled below ~3 V) and signal-level control (OE low, WE high, or CE high), plus optional nonvolatile software data protection activated by a 3-byte unlock sequence. Status monitoring uses dedicated I/O pins: I/O7 for DATA polling and I/O6 for Toggle Bit polling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 64 kbit (8,192 × 8-bit words) - supports firmware parameter storage and calibration tables |
| Access time | 120 ns - enables direct interface with legacy 8-bit microcontrollers running at ≤8 MHz |
| Write cycle time | 2 ms typical per byte or page - allows deterministic timing budgeting in real-time systems |
| Endurance | 100,000 write/erase cycles - suitable for field-updatable configuration registers with daily updates over 27 years |
| Data retention | 100 years at +25°C - ensures long-term reliability in unattended infrastructure equipment |
| Supply voltage | 5 V ±10% - compatible with standard TTL/CMOS logic rails without regulation overhead |
| Operating temperature | –40°C to +85°C - qualified for industrial environments including factory automation and power metering |
| Package | 32-lead PLCC (RoHS-compliant, matte tin finish) - supports wave-solder assembly and thermal cycling robustness |
Pinout & Package
32-lead Plastic Leaded Chip Carrier (PLCC), RoHS-compliant, 0.45 mm × 0.55 mm body, JEDEC MS-016AE footprint (drawing N32.45x55). Pin 1 identifier located at corner with notch or index mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A12 | Address inputs | 13-bit address bus selecting one of 8,192 memory locations; A6–A12 define page boundaries for 64-byte writes |
| I/O0–I/O7 | Bi-directional data bus | 8-bit parallel interface; I/O6 and I/O7 serve dual roles as status indicators during write polling |
| CE | Chip Enable | Primary device select; must be LOW for read/write; HIGH places device in standby (≤200 µA) |
| OE | Output Enable | Controls output buffers; LOW enables data readout; used with CE for bus contention avoidance |
| WE | Write Enable | Initiates write cycles; falling edge latches address/data; rising edge triggers internal programming |
| VCC | Power supply | +5 V ±10%; decoupling requires 0.1 µF ceramic capacitor per device plus 4.7 µF bulk cap per 8 devices |
| VSS | Ground | Reference return path; shared with system ground plane to minimize noise coupling |
| NC | No Connect | Pins 3, 13, 29, 30 - electrically isolated; no bonding wire; must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Page write operation | 64-byte burst write reduces full-memory programming time to 0.25 s versus 16.4 s for sequential byte writes |
| End-of-write detection | Hardware-accelerated status reporting via I/O6 (Toggle Bit) or I/O7 (DATA Polling) eliminates fixed-delay wait loops |
| Software data protection | Nonvolatile lock activated by 3-byte unlock sequence prevents accidental writes after power cycling |
| Hardware write inhibit | VCC sense and signal-level gating (OE/WE/CE states) protect data during power ramp-up/down transients |
| JEDEC-standard pinout | Pin-compatible with industry-standard SRAMs and EPROMs, simplifying board-level replacement in legacy designs |
| Low-power CMOS design | 40 mA max active current and 200 µA max standby current enable use in battery-backed or energy-constrained systems |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding user-defined operational settings accessible at power-on reset. Use Value: 100,000-cycle endurance and –40°C to +85°C operation ensure reliable reprogramming across 10+ years of daily maintenance cycles. | Use Scenario: Retaining sensor calibration coefficients and safety-critical device settings in portable diagnostic instruments subject to frequent firmware updates. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter vault with software/hardware write protection preventing unauthorized modification. Use Value: Dual polling (I/O6/I/O7) enables deterministic write completion detection, meeting IEC 62304 software timing requirements. |
| Smart Energy Meter Firmware Flags | Avionics System Bootloader Parameters |
Use Scenario: Recording tariff schedules, metering constants, and cryptographic keys in ANSI C12.22-compliant utility meters installed outdoors for 20+ years. IC Role / Device Role / Timing Role: Long-term data archive with 100-year retention guarantee, accessed only during firmware upgrades or regulatory audits. Use Value: RoHS-compliant PLCC package withstands thermal cycling in uncontrolled ambient conditions while maintaining data integrity. | Use Scenario: Holding boot configuration, watchdog timeout values, and fail-safe defaults in DO-254-certified flight control subsystems. IC Role / Device Role / Timing Role: Safety-critical configuration store requiring deterministic write verification and immunity to power interruption. Use Value: Self-timed internal programming and status polling eliminate need for external watchdog timers during parameter updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT28C64B-15PU | 150 ns access time; 5 V only; 28-pin PDIP/SOIC; 100,000 cycles; 100-year retention | Lacks page write (byte-only); no Toggle Bit polling; slower access limits high-speed controller interfacing | Select when board space permits SOIC/PDIP and page write is unnecessary |
| M95640-DWMN6TP | 2 MHz SPI interface; 5 V tolerant; 8-pin SOIC; 100,000 cycles; 40-year retention; 5 ms write time | Serial interface reduces pin count but increases software overhead; lower retention impacts long-life deployments | Select for space-constrained designs where serial interface simplifies routing and reduces BOM count |
Compared with AT28C64B-15PU and M95640-DWMN6TP, the X28HC64JIZ-12T1 provides faster parallel access, deterministic page-write performance, and superior 100-year data retention-making it optimal for industrial systems requiring guaranteed longevity and deterministic timing.
Availability
X28HC64JIZ-12T1 is available at Aetrix Electronics and suitable for industrial PLC configuration storage, medical device calibration data retention, smart energy meter firmware flags, and avionics bootloader parameter management requiring stable component supply across extended product lifecycles.
Supply support for X28HC64JIZ-12T1 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
Intersil Corporation is a pioneer in precision analog and power management ICs, acquired by Renesas Electronics in 2017; its legacy EEPROM portfolio emphasizes industrial-grade reliability and long-term manufacturability.
The X28HC64 product line was designed for mission-critical nonvolatile storage in industrial automation, instrumentation, and infrastructure systems where data integrity, endurance, and temperature resilience are mandatory.
FAQ
What is the operating temperature range for the X28HC64JIZ-12T1?
The X28HC64JIZ-12T1 is rated for industrial temperature operation from –40°C to +85°C. This range is validated per the manufacturer's recommended operating conditions and supports deployment in factory automation, outdoor metering, and transportation systems without derating. The specification appears in the Ordering Information table on page 2 of FN8109 Rev 4.00 and is confirmed in the Absolute Maximum Ratings section on page 9.
Does the X28HC64JIZ-12T1 support page write operations, and what is the maximum page size?
Yes, the X28HC64JIZ-12T1 supports page write operations with a fixed 64-byte page size. This capability allows up to 64 consecutive bytes to be loaded before initiating internal programming, reducing full-memory write time to 0.25 seconds. The feature is documented in the Device Operation section (page 3), timing diagrams (Figure 17), and AC Electrical Specifications (page 13) of FN8109 Rev 4.00.
How does the X28HC64JIZ-12T1 indicate write completion to the host system?
The X28HC64JIZ-12T1 provides two hardware-supported methods: DATA polling on I/O7 (complement of last written data until complete) and Toggle Bit polling on I/O6 (pin toggles during internal programming). Both are self-contained, require no external components, and are detailed in Figures 2, 4, 5, and 6 of FN8109 Rev 4.00. These mechanisms eliminate fixed delays and improve system responsiveness.
Is the X28HC64JIZ-12T1 RoHS compliant, and what packaging does it use?
Yes, the X28HC64JIZ-12T1 is RoHS compliant and supplied in a 32-lead PLCC package with matte tin (e3) termination finish. This is explicitly stated in the Ordering Information table (page 2, Note 4) and Thermal Information section (page 9) of FN8109 Rev 4.00. The package meets IPC/JEDEC J-STD-020 moisture sensitivity requirements.
What write protection mechanisms does the X28HC64JIZ-12T1 offer?
The X28HC64JIZ-12T1 offers dual-layer protection: hardware-based (VCC sense disabling writes below ~3 V, and OE/WE/CE signal gating) and software-based (nonvolatile lock enabled via 3-byte unlock sequence). Both are described in detail on pages 6–7 of FN8109 Rev 4.00, with timing diagrams in Figures 7–10 confirming implementation validity for the X28HC64JIZ-12T1 variant.
X28HC64JIZ-12T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 120 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
X28HC64JIZ-12T1 FAQ
1.How can I place an order for X28HC64JIZ-12T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X28HC64JIZ-12T1 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 X28HC64JIZ-12T1 reliable?
The price and inventory of X28HC64JIZ-12T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X28HC64JIZ-12T1 is usually 5 days.
3.What payment methods are accepted for X28HC64JIZ-12T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X28HC64JIZ-12T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X28HC64JIZ-12T1?
X28HC64JIZ-12T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X28HC64JIZ-12T1 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 X28HC64JIZ-12T1?
For technical support, including X28HC64JIZ-12T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X28HC64JIZ-12T1 requirements.
6.How does Aetrix verify that X28HC64JIZ-12T1 is sourced from the original manufacturer or authorized distributors?
All X28HC64JIZ-12T1 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 X28HC64JIZ-12T1 meets industry standards.
7.What is the process for return or replacement of X28HC64JIZ-12T1?
All X28HC64JIZ-12T1 units undergo pre-shipment inspection (PSI). If there is an issue with X28HC64JIZ-12T1, 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 X28HC64JIZ-12T1 part is unused and in its original packaging.
Return procedure for X28HC64JIZ-12T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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