My Inquiry
My Account
Renesas X28HC64JIZ-90
- Part No.:
- X28HC64JIZ-90
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
X28HC64JIZ-90.pdf
- Description:
- IC EEPROM 64KBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,028
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
X28HC64JIZ-90 from Intersil is a 64 kbit (8k × 8), byte-alterable EEPROM with JEDEC-standard 32-lead PLCC packaging, -40°C to +85°C industrial temperature range, 90 ns read access time, and single 5 V supply operation. It serves as nonvolatile configuration storage in embedded controllers, industrial PLCs, and telecom line cards where data integrity across power cycles is critical.
For engineers reviewing the X28HC64JIZ-90 datasheet, X28HC64JIZ-90 pinout, X28HC64JIZ-90 application, or X28HC64JIZ-90 equivalent, key selection criteria include its 100,000 write endurance, 100-year data retention, page-write capability (64-byte burst), DATA/Toggle bit polling support, and RoHS-compliant Pb-free PLCC package.
Technical Context
The X28HC64JIZ-90 implements a floating-gate CMOS EEPROM array with dual-line control architecture (CE/OE for reads, CE/WE for writes), enabling bus contention avoidance in multi-device memory systems. Its internal timing logic supports self-timed byte and page writes without external high-voltage circuitry or erase-before-write sequences.
It features two hardware write-inhibit mechanisms-VCC sense (disable below ~3 V) and signal-level inhibition (OE low, WE high, or CE high)-plus optional nonvolatile software data protection activated via a three-byte unlock sequence. End-of-write status is confirmed via I/O7 DATA polling or I/O6 Toggle bit behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 65,536 bits (8,192 × 8), organized as byte-addressable nonvolatile storage |
| Read access time | 90 ns maximum - determines minimum CPU wait-state insertion for reliable read timing |
| Write cycle time | 2 ms typical per byte - defines worst-case latency for single-byte updates without polling |
| Page write capacity | 64 bytes per page - enables full memory rewrite in ~0.25 s, reducing host firmware overhead |
| Endurance | 100,000 write/erase cycles - supports long-term field deployment in logging or calibration applications |
| Data retention | 100 years at +25°C - ensures configuration persistence over product lifetime without refresh |
| Supply voltage | 5 V ±10% - compatible with legacy 5 V logic buses and eliminates need for auxiliary voltage rails |
| Operating temperature | -40°C to +85°C - qualified for industrial environments including factory automation and outdoor base stations |
Pinout & Package
Package: 32-lead Plastic Leaded Chip Carrier (PLCC), RoHS-compliant, JEDEC MS-016AE (N32.45x55), body size 12.5 mm × 12.5 mm × 3.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A12 | Address inputs | 13-bit address bus selecting one of 8,192 byte locations; A6–A12 define page boundaries for 64-byte writes |
| I/O0–I/O7 | Bidirectional data bus | 8-bit parallel interface for read/write; I/O6 = Toggle bit, I/O7 = DATA polling bit during write cycles |
| CE | Chip Enable | Active-low primary device select; must be LOW for all operations; controls standby current (≤200 µA) |
| OE | Output Enable | Active-low read control; HIGH disables output drivers to prevent bus contention during writes |
| WE | Write Enable | Active-low write strobe; falling edge latches data; rising edge triggers internal programming cycle |
| VCC | Power supply | +5 V ±10% supply; powers core and I/O; enables hardware write inhibit below ~3 V |
| VSS | Ground | Reference return for all signals and power; requires local 0.1 µF ceramic decoupling per device |
| NC | No connect | Two unconnected pins (Pin 3 and Pin 31); must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-standard pinout | Pin-compatible with industry-standard 8-bit RAMs and EPROMs, simplifying board reuse and migration |
| Page write mode | 64-byte burst writes reduce total programming time by >95% vs. sequential byte writes |
| DATA Polling (I/O7) | Eliminates fixed delays in firmware; host reads last-written address until I/O7 returns true data |
| Toggle Bit Polling (I/O6) | Enables status checking without saving prior address/data - ideal for multi-chip arrays and multiprocessor systems |
| Software data protection | Nonvolatile lock activated via 3-byte unlock sequence; prevents accidental writes during power transitions |
| Hardware write inhibit | VCC sense + signal-level gating (CE/OE/WE states) ensures zero unintended writes at power-up/down |
Applications
| Industrial PLC Configuration Storage | Telecom Line Card Calibration Data |
|---|---|
|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and firmware revision flags in programmable logic controllers deployed in manufacturing cells. IC Role / Device Role / Timing Role: Nonvolatile configuration register providing deterministic boot-time parameter loading with guaranteed 100-year retention. Use Value: Eliminates battery-backed SRAM and associated maintenance; withstands 100,000 reprogramming cycles during field calibration. |
Use Scenario: Holding analog front-end trim values, gain coefficients, and channel-specific compensation data on DSLAM and optical line cards. IC Role / Device Role / Timing Role: Precision calibration memory accessed only at power-on or service events; 90 ns access avoids CPU wait-state penalties. Use Value: Enables factory and field recalibration without hardware replacement; RoHS PLCC package meets telecom environmental compliance. |
| Medical Device Setup Profiles | Automotive ECU Parameter Tables |
|
Use Scenario: Archiving user-selectable therapy modes, alarm thresholds, and sensor calibration offsets in portable infusion pumps and diagnostic monitors. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for FDA-regulated configuration data; software protection prevents runtime corruption. Use Value: Meets IEC 62304 data integrity requirements; 100,000-cycle endurance supports lifetime device servicing. |
Use Scenario: Storing fuel injection timing maps, emission control constants, and adaptive learning values in engine control units operating under thermal stress. IC Role / Device Role / Timing Role: Industrial-grade EEPROM qualified to -40°C to +85°C, ensuring reliability in under-hood environments. Use Value: Maintains calibration across thermal cycling; hardware VCC-sense write inhibit prevents corruption during cranking voltage drops. |
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; 28-pin PDIP; 10,000 write cycles; no page write or Toggle bit | Limited to low-speed, cost-sensitive designs; lacks burst programming and advanced polling | Select when board space allows PDIP and system timing budget exceeds 150 ns |
| FM24CL64-G | 64 kbit F-RAM; 55 ns access; unlimited endurance; 3 V operation; SOIC-28 | Superior write speed and cycle life but requires 3 V supply and lacks 5 V compatibility | Prefer for high-write-frequency applications where 5 V operation is not required |
Compared with AT28C64B-15PU and FM24CL64-G, the X28HC64JIZ-90 uniquely balances 5 V compatibility, 90 ns performance, 64-byte page writes, and industrial temperature rating - making it optimal for legacy 5 V systems requiring robust, field-programmable nonvolatile storage.
Availability
X28HC64JIZ-90 is available at Aetrix Electronics and suitable for industrial PLCs, telecom line cards, medical device configuration storage, and automotive ECU parameter tables requiring stable component supply across extended product lifecycles.
Supply support for X28HC64JIZ-90 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 U.S.-based semiconductor company specializing in power management and precision analog ICs, acquired by Renesas Electronics in 2017.
The X28HC64JIZ-90 belongs to Intersil's legacy EEPROM product line designed for industrial and telecom applications demanding high reliability, 5 V compatibility, and long-term data retention without battery backup.
FAQ
What is the maximum write endurance specification for the X28HC64JIZ-90?
The X28HC64JIZ-90 is rated for a minimum of 100,000 write/erase cycles per memory location, verified through characterization testing. This endurance level supports repeated field calibration, firmware patching, and configuration updates over the operational lifetime of industrial and telecom equipment. The X28HC64JIZ-90 maintains this specification across its full -40°C to +85°C operating range.
Does the X28HC64JIZ-90 support page write operations, and what is the maximum page size?
Yes, the X28HC64JIZ-90 supports page write operations with a fixed page size of 64 bytes. This allows up to 64 consecutive bytes to be loaded into the internal latch before initiating the automatic programming cycle, reducing total memory rewrite time to approximately 0.25 seconds. Each byte load must occur within 100 µs of the previous WE transition to remain within the active page window.
How does the X28HC64JIZ-90 indicate completion of a write operation?
The X28HC64JIZ-90 provides two hardware-supported methods: DATA Polling on I/O7 (returns complement of last written data until complete) and Toggle Bit polling on I/O6 (toggles state on successive reads during programming). Both methods eliminate fixed delay loops and enable deterministic, interrupt-free firmware implementation without external status hardware.
Is the X28HC64JIZ-90 RoHS compliant, and what is its package type?
Yes, the X28HC64JIZ-90 is RoHS compliant and packaged in a 32-lead Plastic Leaded Chip Carrier (PLCC) with matte tin (e3) termination finish. Its package drawing is N32.45x55 per JEDEC MS-016AE, and it is qualified for wave soldering per IPC/JEDEC J-STD-020 moisture sensitivity level guidelines.
What are the key hardware write-protection mechanisms built into the X28HC64JIZ-90?
The X28HC64JIZ-90 incorporates three hardware write-protection layers: (1) VCC sense that inhibits writes below ~3 V, (2) signal-level gating where holding OE low, WE high, or CE high blocks write initiation, and (3) optional nonvolatile software protection activated via a 3-byte unlock sequence. These operate concurrently to prevent corruption during power-up, power-down, and runtime faults.
X28HC64JIZ-90 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- 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:
- 90 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-90 FAQ
1.How can I place an order for X28HC64JIZ-90 through Aetrix?
Please submit a Request for Quotation (RFQ) for X28HC64JIZ-90 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-90 reliable?
The price and inventory of X28HC64JIZ-90 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X28HC64JIZ-90 is usually 5 days.
3.What payment methods are accepted for X28HC64JIZ-90?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X28HC64JIZ-90 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X28HC64JIZ-90?
X28HC64JIZ-90 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X28HC64JIZ-90 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-90?
For technical support, including X28HC64JIZ-90 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X28HC64JIZ-90 requirements.
6.How does Aetrix verify that X28HC64JIZ-90 is sourced from the original manufacturer or authorized distributors?
All X28HC64JIZ-90 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-90 meets industry standards.
7.What is the process for return or replacement of X28HC64JIZ-90?
All X28HC64JIZ-90 units undergo pre-shipment inspection (PSI). If there is an issue with X28HC64JIZ-90, 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-90 part is unused and in its original packaging.
Return procedure for X28HC64JIZ-90:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X28HC64JIZ-90 Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
