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Renesas R1EX24064ASA00A#S0
- Part No.:
- R1EX24064ASA00A#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- -
- Datasheet:
-
R1EX24064ASA00A#S0.pdf
- Description:
- EEPROM, 8KX8, SERIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
R1EX24064ASA00A from Renesas Electronics is a 64-kbit (8,192 × 8-bit) two-wire serial EEPROM with I²C interface, 1.8 V to 5.5 V single-supply operation, 400 kHz clock frequency, and SOP-8 package. It delivers high reliability for nonvolatile data storage in embedded control modules, power management units, and sensor calibration systems.
For engineers reviewing the R1EX24064ASA00A datasheet, R1EX24064ASA00A pinout, R1EX24064ASA00A application, or R1EX24064ASA00A equivalent, this page provides verified technical context, pin-level design meaning, real-world use scenarios, and validated alternative options for industrial-grade system integration.
Technical Context
This device implements a standard I²C-compatible two-wire serial interface with fixed 4-bit device code "1010", 3-bit hardware address pins (A0–A2), and R/W bit control. It supports byte and 32-byte page write operations with automatic internal address incrementing within each page boundary.
It features write protection via the WP pin (enabling upper 16 kbit protection when high), acknowledge polling for write-cycle completion detection, and noise suppression on SCL/SDA inputs (≤50 ns). The memory array uses MNOS technology with CMOS low-voltage circuitry for stable operation across −40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 64 kbit (8,192 × 8-bit) - supports firmware parameter storage, calibration tables, and configuration registers in resource-constrained systems. |
| Interface | I²C two-wire serial - enables shared bus connectivity with microcontrollers without dedicated parallel address/data lines. |
| Supply voltage | 1.8 V to 5.5 V - interoperable with both 3.3 V and 5 V logic domains, simplifying mixed-voltage board design. |
| Max clock frequency | 400 kHz - compatible with standard-mode I²C controllers; supports ~8 kbyte/s effective write throughput using page mode. |
| Write endurance | 1,000k cycles @25°C - suitable for frequent logging or dynamic configuration updates in industrial monitoring equipment. |
| Data retention | 100 years @25°C - ensures long-term integrity of stored calibration coefficients, serial numbers, or security keys over product lifetime. |
| Page size | 32 bytes - reduces write latency versus byte-write; requires proper address alignment to avoid intra-page rollover corruption. |
| Operating temperature | −40°C to +85°C - qualified for extended industrial environments including motor drives, HVAC controllers, and metering systems. |
Pinout & Package
Package: 150-mil 8-pin plastic SOP (PRSP0008DF-B / FP-8DBV), lead-free, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Hardware device address inputs | Set unique I²C slave address (3-bit code); tied to VCC/VSS to select one of up to eight devices on same bus. |
| SCL | Serial clock input | Controls timing of data transfer; must be pulled up externally; max 400 kHz; rise/fall time ≤300 ns. |
| SDA | Serial bidirectional data line | Open-drain output requiring external pull-up; carries device address, memory address, and data; transitions only during SCL low. |
| WP | Write protect input | High = protects upper 16 kbit (0x3000–0x3FFF); low = full read/write access; no effect on read operations. |
| VCC | Power supply | 1.8–5.5 V single supply; decoupling capacitor (0.1 µF) required near pin for noise immunity during write cycles. |
| VSS | Ground reference | System ground return path; must be low-impedance and co-located with VCC decoupling to minimize ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | 1.8 V to 5.5 V range eliminates need for level shifters in mixed-voltage designs and supports battery-backed operation down to 1.8 V. |
| 32-byte page write | Reduces average write time per byte by >7× vs. byte-write; enables efficient bulk parameter updates without host-side buffering. |
| Write cycle time | 5 ms maximum internal write duration - allows predictable timing for host firmware timeout handling and status polling. |
| Low-power standby | 2 µA max current at VCC = 5.5 V - minimizes quiescent drain in always-on systems such as smart meters and IoT edge nodes. |
| Hardware write protection | WP pin enables selective lock of top 16 kbit - safeguards critical firmware flags or security keys while allowing runtime update of user data. |
| Lead-free packaging | SOP-8 with Ni/Pd/Au plating meets RoHS compliance and reflow soldering requirements for modern PCB assembly. |
Applications
| Industrial Sensor Calibration | Power Supply Configuration |
|---|---|
|
Use Scenario: Storing temperature-compensated offset/gain coefficients for analog sensor front-ends in factory automation sensors. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-up initialization and field recalibration routines. Use Value: Enables traceable, field-updatable calibration without requiring MCU flash partitioning or external programming tools. |
Use Scenario: Holding digital control settings (voltage/current limits, soft-start time, fault thresholds) in programmable DC-DC modules. IC Role / Device Role / Timing Role: I²C-configurable persistent memory for power controller register mapping and startup defaults. Use Value: Allows OEMs to customize output behavior per application without hardware changes or firmware recompilation. |
| Consumer Audio Device Settings | Smart Meter Firmware Metadata |
|
Use Scenario: Retaining user preferences (volume level, EQ profile, input source) across power cycles in Bluetooth speakers and AV receivers. IC Role / Device Role / Timing Role: Low-latency I²C-accessible storage for frequently modified UI state variables. Use Value: Eliminates reliance on MCU internal flash wear leveling; supports >1M user setting changes over product lifetime. |
Use Scenario: Recording firmware version, manufacturing date, utility ID, and tamper-event logs in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, long-retention storage for regulatory-critical metadata and audit trails. Use Value: Meets 100-year data retention requirement for utility infrastructure while supporting remote firmware validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C64D-SSHM-T (Microchip) | Same 64 kbit I²C EEPROM, but rated for 1 MHz clock and offers 128-byte page write; slightly higher active current (3.5 mA write). | Better suited for high-throughput logging where faster clock and larger pages reduce host CPU overhead. | Select if system uses 1 MHz I²C and requires >32-byte atomic writes; verify WP pin behavior matches Renesas implementation. |
| BR24G64FJ-3GE2 (ROHM) | 64 kbit I²C EEPROM with 1.7–5.5 V range and 1 MHz support; includes built-in write protect register (not pin-based) and enhanced ESD rating (±6 kV HBM). | Preferred for automotive body electronics where register-level write control and robustness against board-level ESD events are critical. | Choose for AEC-Q200-aligned designs needing software-configurable protection and higher ESD immunity than R1EX24064ASA00A offers. |
Compared with AT24C64D-SSHM-T and BR24G64FJ-3GE2, the R1EX24064ASA00A provides proven industrial temperature stability and lower standby current (2 µA), making it optimal for battery-powered or thermally constrained applications where 400 kHz bandwidth suffices.
Availability
R1EX24064ASA00A is available at Aetrix Electronics and suitable for industrial sensor calibration, power supply configuration, and smart meter firmware metadata storage requiring stable component supply, long-lifecycle availability, and RoHS-compliant sourcing.
Supply support for R1EX24064ASA00A 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 enterprise applications.
The R1EX24xxx series was designed specifically for reliable, low-voltage serial data storage in cost-sensitive embedded systems-emphasizing write endurance, data retention, and I²C interoperability across diverse voltage domains.
FAQ
What is the maximum I²C clock frequency supported by the R1EX24064ASA00A?
The R1EX24064ASA00A supports a maximum I²C clock frequency of 400 kHz, compliant with standard-mode I²C specifications. This limit applies across its full operating voltage range (1.8 V to 5.5 V) and temperature range (−40°C to +85°C). Exceeding 400 kHz may result in unreliable communication or missed acknowledgments due to internal timing constraints.
Does the R1EX24064ASA00A require external pull-up resistors on SDA and SCL lines?
Yes, the R1EX24064ASA00A requires external pull-up resistors on both SDA and SCL lines because its SDA pin uses an open-drain structure and SCL is a passive input. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and speed; Renesas recommends verifying VOL and IOL specs to select appropriate resistor values for your system.
How does the write protection feature work on the R1EX24064ASA00A?
When the WP pin is driven high, the R1EX24064ASA00A protects the upper 16 kbit (addresses 0x3000–0x3FFF); all other addresses remain writable. When WP is low, full read/write access is enabled. Read operations are always permitted regardless of WP state. This hardware-based protection operates independently of I²C commands.
What is the page size and write cycle time for the R1EX24064ASA00A?
The R1EX24064ASA00A has a 32-byte page size and a maximum write cycle time of 5 ms. During a page write, up to 32 sequential bytes can be loaded before the internal write begins; the 5 ms duration starts after the STOP condition and is not affected by page fill level. Acknowledge polling can detect completion earlier.
Is the R1EX24064ASA00A suitable for automotive applications?
No-the R1EX24064ASA00A is classified as a Standard-grade Renesas product intended for consumer and industrial applications (e.g., office equipment, audio devices, test instruments). It is not qualified for automotive use; Renesas explicitly states that industrial applications like automotive systems require prior sales office consultation and separate qualification.
R1EX24064ASA00A#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:
- -
R1EX24064ASA00A#S0 FAQ
1.How can I place an order for R1EX24064ASA00A#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1EX24064ASA00A#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 R1EX24064ASA00A#S0 reliable?
The price and inventory of R1EX24064ASA00A#S0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1EX24064ASA00A#S0 is usually 5 days.
3.What payment methods are accepted for R1EX24064ASA00A#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1EX24064ASA00A#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1EX24064ASA00A#S0?
R1EX24064ASA00A#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1EX24064ASA00A#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 R1EX24064ASA00A#S0?
For technical support, including R1EX24064ASA00A#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1EX24064ASA00A#S0 requirements.
6.How does Aetrix verify that R1EX24064ASA00A#S0 is sourced from the original manufacturer or authorized distributors?
All R1EX24064ASA00A#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 R1EX24064ASA00A#S0 meets industry standards.
7.What is the process for return or replacement of R1EX24064ASA00A#S0?
All R1EX24064ASA00A#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1EX24064ASA00A#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 R1EX24064ASA00A#S0 part is unused and in its original packaging.
Return procedure for R1EX24064ASA00A#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1EX24064ASA00A#S0 Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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AT24C02C-SSHM-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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