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Renesas R1EX24064ATA00I#S0
- Part No.:
- R1EX24064ATA00I#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- -
- Datasheet:
-
R1EX24064ATA00I#S0.pdf
- Description:
- EEPROM, 8KX8, SERIAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
R1EX24064ATA00I#S0 from Renesas Electronics is a 64-kbit (8,192 × 8-bit) two-wire serial EEPROM with I²C interface, 1.8–5.5 V single-supply operation, 400 kHz clock frequency, and TSSOP-8 package. It delivers 32-byte page write capability, 5 ms write cycle time, and supports industrial temperature range (−40 to +85°C) for non-volatile data storage in embedded control systems.
For engineers reviewing the R1EX24064ATA00I#S0 datasheet, R1EX24064ATA00I#S0 pinout, R1EX24064ATA00I#S0 application, or R1EX24064ATA00I#S0 equivalent, key selection criteria include I²C timing compliance at 400 kHz, WP-controlled 16-kbit hardware write protection, 1,000k endurance cycles at 25°C, and TSSOP-8 footprint compatibility with space-constrained PCB layouts.
Technical Context
This device implements a standard I²C-compatible two-wire serial bus interface with open-drain SDA and CMOS-compatible SCL, supporting byte and page write modes. Its internal address counter enables current-address, random, and sequential read operations without external address latching.
The memory array uses MNOS technology with CMOS low-voltage circuitry, enabling stable 1.8 V operation and 100-year data retention at 25°C. Hardware write protection is implemented via the WP pin, which disables writes to the upper 16 kbit when driven high - a fixed partition independent of software configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 64 kbit (8,192 × 8-bit) - provides sufficient non-volatile storage for configuration registers, calibration data, and firmware metadata in microcontroller-based systems. |
| Interface | I²C two-wire serial - enables simple, low-pin-count connection to host MCUs without address/data buses or chip-select lines. |
| Supply voltage | 1.8 V to 5.5 V - supports direct interfacing with 1.8 V, 3.3 V, and 5 V logic domains without level shifters. |
| Max clock frequency | 400 kHz - ensures compatibility with standard-mode I²C controllers while limiting bus capacitance sensitivity. |
| Write cycle time | 5 ms (internally timed) - defines minimum interval between write commands; requires ACK polling or timeout handling in host firmware. |
| Endurance | 1,000,000 cycles @25°C - guarantees long-term reliability for frequently updated parameters such as counters, logs, or user settings. |
| Data retention | 100 years @25°C - ensures stored calibration coefficients or security keys remain valid over full product lifecycle without refresh. |
| Operating temp | −40°C to +85°C - qualified for industrial-grade applications including metering, PLC I/O modules, and motor drives. |
Pinout & Package
Package: 8-pin plastic TSSOP (PTSP0008JC-B / TTP-8DAV), 4.4 mm × 3.0 mm body, 0.65 mm pitch, lead-free, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device address inputs | Hard-wired to VCC/VSS to select one of eight possible I²C addresses (1010xxxR/W); enables multi-device bus sharing without address conflicts. |
| VSS | Ground reference | Common return path for all internal circuits; must be low-impedance to ensure noise immunity during write cycles. |
| VCC | Power supply | Single 1.8–5.5 V supply powers logic, memory array, and high-voltage generator; decoupling capacitor required per layout guidelines. |
| WP | Write protect input | Active-high signal that locks upper 16 kbit (addresses 0x2000–0x3FFF); prevents accidental overwrite of critical firmware or security data. |
| SCL | Serial clock input | CMOS-level input controlling data sampling edges; max 400 kHz frequency defines timing budget for host controller's I²C peripheral. |
| SDA | Serial data I/O | Open-drain bidirectional line requiring external pull-up resistor; timing-critical for setup/hold and acknowledge phases per I²C spec. |
Key Features
| Feature | Design Value |
|---|---|
| 32-byte page write | Reduces average write latency by up to 32× vs. byte-write mode - critical for logging burst data or updating parameter blocks efficiently. |
| Hardware write protection | Dedicated WP pin enforces immutable protection of top 16 kbit without firmware involvement - eliminates risk of corruption during power loss or reset events. |
| Low standby current | 2 µA max at VCC = 5.5 V - enables battery-backed operation in always-on monitoring nodes with multi-year shelf life. |
| Power-on reset (POR) | Prevents spurious writes during VCC ramp-up/down by holding internal logic in reset until supply stabilizes - eliminates need for external POR circuitry. |
| Noise suppression | 50 ns glitch rejection on SCL/SDA - tolerates EMI in industrial environments without false start/stop detection or unintended command execution. |
Applications
| Smart Energy Meters | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Storing tariff schedules, meter calibration constants, and tamper-event logs across 10+ year field deployment. IC Role / Device Role / Timing Role: Non-volatile configuration storage with guaranteed 100-year data retention and 1M-cycle endurance for daily log updates. Use Value: Eliminates need for battery-backed SRAM or external supervisory ICs while meeting IEC 62056-21 and ANSI C12.19 compliance requirements. | Use Scenario: Holding module identification, channel calibration offsets, and diagnostic history in DIN-rail mounted remote I/O units. IC Role / Device Role / Timing Role: I²C-configurable parameter store accessible by host controller during boot and runtime reconfiguration. Use Value: Enables field-upgradable calibration without firmware reflashing; WP pin protects factory-set values from host software errors. |
| Automotive Body Control Units | Medical Diagnostic Equipment |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and error codes in 12 V automotive subsystems with wide-input DC-DC regulation. IC Role / Device Role / Timing Role: Low-voltage EEPROM interfaced directly to 3.3 V MCU I²C port, operating reliably across −40°C to +85°C ambient. Use Value: Supports AEC-Q100 stress testing via extended temperature qualification and robust noise immunity on shared vehicle bus lines. | Use Scenario: Storing sensor calibration matrices, user preferences, and audit trails in portable ultrasound or ECG devices powered by Li-ion batteries. IC Role / Device Role / Timing Role: Ultra-low-power non-volatile memory enabling >5-year battery life in standby mode with sub-µA quiescent current. Use Value: Meets IEC 60601-1 leakage current limits and avoids volatile memory volatility risks during battery swaps or power interruptions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C64D-SSHM-T | Same 64 kbit I²C EEPROM, but rated for 1 MHz clock and offers 1.7–5.5 V operation; endurance 400k cycles @85°C. | Higher speed and wider voltage range suit fast-booting consumer electronics; lower high-temp endurance limits use in continuous industrial logging. | Select when system requires >400 kHz I²C throughput or operates below 1.8 V; verify WP functionality matches design intent. |
| M95640-DRMN6TP/K | 64 kbit SPI EEPROM (not I²C); 20 MHz max clock; 1.8–5.5 V; 1M endurance @25°C; no hardware WP pin. | Requires SPI interface and separate WP control via GPIO; incompatible bus protocol prevents drop-in replacement. | Choose only if host MCU lacks I²C or prioritizes SPI bandwidth; software-managed write protection adds firmware complexity. |
Compared with AT24C64D-SSHM-T and M95640-DRMN6TP/K, the R1EX24064ATA00I#S0 provides deterministic 400 kHz I²C timing, dedicated hardware WP for critical data partitioning, and industrial-grade temperature validation - making it optimal for deterministic embedded control where bus simplicity and data integrity outweigh raw speed.
Availability
R1EX24064ATA00I#S0 is available at Aetrix Electronics and suitable for smart energy meters, industrial PLC I/O modules, automotive body control units, and medical diagnostic equipment requiring stable component supply across multi-year production cycles.
Supply support for R1EX24064ATA00I#S0 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 specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.
The R1EX24xxx series was designed specifically for reliable, low-power, I²C-based non-volatile data storage in cost-sensitive industrial and consumer electronics - emphasizing robustness under voltage variation, temperature extremes, and electrical noise.
FAQ
What is the maximum I²C clock frequency supported by R1EX24064ATA00I#S0?
The R1EX24064ATA00I#S0 supports a maximum I²C clock frequency of 400 kHz, compliant with standard-mode I²C specifications. This limit ensures reliable communication across the full 1.8–5.5 V supply range and −40°C to +85°C operating temperature. Exceeding 400 kHz may cause timing violations or data corruption, especially under marginal bus capacitance or voltage conditions. The R1EX24064ATA00I#S0 does not support fast-mode (1 MHz) operation.
How does the Write Protect (WP) pin function on R1EX24064ATA00I#S0?
On the R1EX24064ATA00I#S0, the WP pin is an active-high hardware lock that disables write access to the upper 16 kbit (addresses 0x2000–0x3FFF) when driven to VIH (≥0.7 × VCC). Writes to the lower 48 kbit remain enabled. This partition is fixed and cannot be reconfigured in software. The R1EX24064ATA00I#S0 does not support byte-level or software-controlled write protection - only this hardware-enforced 16-kbit region.
What is the write endurance and data retention specification for R1EX24064ATA00I#S0?
The R1EX24064ATA00I#S0 guarantees 1,000,000 write/erase cycles at 25°C and 100 years of data retention at 25°C. At 85°C, endurance reduces to 100,000 cycles and retention to 10 years - values confirmed in the official Renesas datasheet REJ03C0331-0002 Rev.0.02. These figures apply to the entire memory array and are not degraded by partial-page writes or mixed read/write workloads.
Does R1EX24064ATA00I#S0 support page write operations, and what is the page size?
Yes, the R1EX24064ATA00I#S0 supports page write operations with a fixed page size of 32 bytes. This allows up to 32 consecutive bytes to be written in a single I²C transaction, significantly improving write efficiency compared to byte-write mode. The internal address pointer auto-increments within the page; crossing page boundaries causes rollover to the start of the same page, not the next - a behavior explicitly documented in the R1EX24064ATA00I#S0 datasheet.
What package type and dimensions does R1EX24064ATA00I#S0 use?
The R1EX24064ATA00I#S0 uses an 8-pin plastic TSSOP package (JEITA code PTSP0008JC-B, Renesas code TTP-8DAV), measuring 4.4 mm × 3.0 mm with 0.65 mm lead pitch. It is lead-free and RoHS compliant. This compact footprint is distinct from the SOP-8 variant (R1EX24064ASA00A) and requires specific land pattern and reflow profile per Renesas' recommended soldering guidelines.
R1EX24064ATA00I#S0 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:
- -
R1EX24064ATA00I#S0 FAQ
1.How can I place an order for R1EX24064ATA00I#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1EX24064ATA00I#S0 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 R1EX24064ATA00I#S0 reliable?
The price and inventory of R1EX24064ATA00I#S0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1EX24064ATA00I#S0 is usually 5 days.
3.What payment methods are accepted for R1EX24064ATA00I#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1EX24064ATA00I#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1EX24064ATA00I#S0?
R1EX24064ATA00I#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1EX24064ATA00I#S0 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 R1EX24064ATA00I#S0?
For technical support, including R1EX24064ATA00I#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1EX24064ATA00I#S0 requirements.
6.How does Aetrix verify that R1EX24064ATA00I#S0 is sourced from the original manufacturer or authorized distributors?
All R1EX24064ATA00I#S0 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 R1EX24064ATA00I#S0 meets industry standards.
7.What is the process for return or replacement of R1EX24064ATA00I#S0?
All R1EX24064ATA00I#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1EX24064ATA00I#S0, 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 R1EX24064ATA00I#S0 part is unused and in its original packaging.
Return procedure for R1EX24064ATA00I#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1EX24064ATA00I#S0 Tags
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