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Renesas R1EX25512ATA00A#S0
- Part No.:
- R1EX25512ATA00A#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R1EX25512ATA00A#S0.pdf
- Description:
- EEPROM, 64KX8, SERIAL
- Quantity:
- Payment:
- Shipping:
Inventory:34,263
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Product details
Overview
R1EX25512ATA00A from Renesas Electronics is a 512 Kbit (64-Kword × 8-bit) Serial Peripheral Interface (SPI) EEPROM featuring MONOS memory technology, 1.8 V to 5.5 V single-supply operation, 3 MHz max clock frequency at 1.8 V, 128-byte page programming, and −40°C to +85°C industrial temperature range - deployed in consumer audio equipment, camcorders, and cellular phone configuration storage.
For engineers reviewing the R1EX25512ATA00A datasheet, R1EX25512ATA00A pinout, R1EX25512ATA00A application, or R1EX25512ATA00A equivalent, key selection considerations include SPI mode 0/3 compatibility, hardware write protection via HOLD/W pins, 100-year data retention at 25°C, 1,000k endurance cycles, and TSSOP-8 package footprint constraints for space-constrained PCB layouts.
Technical Context
This SPI EEPROM implements a serial-parallel converter and address generator controlled by dedicated logic that manages read/write sequencing, status register access (SRWD, BP1/BP0, WEL, WIP), and automatic page-write execution. It supports dual SPI modes (0 and 3) with configurable clock polarity and phase.
The device integrates a high-voltage generator for internal programming, Y/X decoders for memory array addressing, and sense amplifiers for reliable read operations. Its HOLD pin enables pause/resume of ongoing transfers without chip deselection, while W and SRWD bits enable hardware-locked status register protection when W is driven low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 512 Kbit (65,536 × 8-bit); supports full memory read with auto-incremented addressing and page-aligned writes. |
| Supply voltage range | 1.8 V to 5.5 V; enables direct interface with 1.8 V, 2.5 V, 3.3 V, and 5 V microcontrollers without level shifting. |
| Max clock frequency | 3 MHz at 1.8 V–5.5 V; defines maximum sustained SPI throughput for configuration data loading or firmware parameter updates. |
| Page write size | 128 bytes per page; reduces total write time versus byte-wise programming - e.g., 512 Kbit programmed in ≤ 4096 ms worst-case. |
| Data retention | 100 years at 25°C; ensures long-term reliability for calibration data, serial numbers, or user settings in unpowered devices. |
| Endurance | 1,000,000 write/erase cycles at 25°C; supports frequent field-updatable parameters in industrial control or metering applications. |
| Operating temperature | −40°C to +85°C; qualified for use in automotive cabin modules, industrial HMIs, and outdoor consumer electronics. |
Pinout & Package
Package: 8-pin plastic TSSOP (PTSP0008JC-B / TTP-8DAV), 4.4 mm × 3.0 mm body, 0.65 mm pitch, lead-free, tape-and-reel (3,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Accepts 1.8–5.5 V; must be stable before asserting S; decoupling capacitor required near pin. |
| VSS | Ground reference | System ground return path; must be low-impedance and tied directly to PCB ground plane. |
| S (Chip Select) | Device enable input | Active-low; falling edge initiates instruction latch; rising edge terminates read/write cycles. |
| C (Serial Clock) | Timing input | Drives all data sampling (D on rising edge, Q on falling edge); supports SPI modes 0 and 3. |
| D (Data In) | Serial input | Receives instructions (WREN, READ, WRITE), addresses, and write data; latched on C rising edge. |
| Q (Data Out) | Serial output | Transfers status register contents or memory data; high-impedance when S = high or HOLD active. |
| W (Write Protect) | Hardware lock control | When low + SRWD = 1, disables status register writes and enforces hardware-protected block locking. |
| HOLD | Communication pause | Halts ongoing SPI transfer without resetting internal state; requires S = low and C = low to activate. |
Key Features
| Feature | Design Value |
|---|---|
| MONOS memory technology | Enables ultra-low power consumption (5 µA standby) and high reliability over 1M cycles without oxide degradation. |
| 128-byte page programming | Reduces average write time per byte by >90% vs. byte-write mode - critical for rapid factory programming or OTA updates. |
| Dual SPI mode support (0 and 3) | Ensures interoperability with diverse host MCUs including ARM Cortex-M, Renesas RX, and legacy 8-bit controllers. |
| Hardware + software write protection | Combines W/SRWD pin control with BP1/BP0 status register bits to enforce layered security for boot code or calibration data. |
| Power-on reset immunity | Prevents spurious writes during VCC ramp-up by requiring S = VCC during power transitions and enforcing 10 ms delay post-1.8 V. |
Applications
| Consumer Audio Systems | Smartphone Camera Modules |
|---|---|
Use Scenario: Storing lens calibration coefficients, white balance presets, and flash timing parameters in portable camera subsystems. IC Role / Device Role / Timing Role: Nonvolatile configuration storage interfaced directly to image signal processor (ISP) via SPI bus. Use Value: Enables consistent image quality across production units and field updates without requiring external MCU intervention. |
Use Scenario: Holding audio codec initialization tables, equalizer profiles, and speaker protection thresholds in Bluetooth headphones. IC Role / Device Role / Timing Role: SPI-configurable memory accessed during system boot to load vendor-specific audio processing parameters. Use Value: Eliminates need for factory-programmed OTP or larger flash, reducing BOM cost and enabling post-manufacture tuning. |
| Industrial HMI Panels | Home Appliance Control Boards |
Use Scenario: Retaining user preferences (brightness, language, alarm settings), firmware version stamps, and error logs in touch-based operator interfaces. IC Role / Device Role / Timing Role: Dedicated SPI EEPROM co-located with ARM-based HMI controller for deterministic, low-latency config reads/writes. Use Value: Guarantees 100-year data retention and 1M-cycle endurance under daily parameter changes - exceeding typical appliance lifetimes. |
Use Scenario: Saving cooking cycle history, door-open event counters, and motor calibration offsets in smart ovens and washing machines. IC Role / Device Role / Timing Role: Robust nonvolatile storage connected to 8-bit or 32-bit appliance MCU, operating across −40°C to +85°C ambient. Use Value: Withstands thermal cycling and humidity exposure while maintaining data integrity - validated for consumer-grade industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25DF041A-SSH-T | 4 Mbit density, quad-SPI capable, 85 MHz max clock, SOIC-8 package only | Higher bandwidth and density suited for firmware storage; lacks HOLD pin and hardware write protection granularity | Select when needing faster read throughput or larger capacity; not drop-in due to pinout and command set differences. |
| M95M04-DRMN6TP/K | 4 Mbit, 5.5 V max VCC, 20 MHz clock, TSSOP-8, built-in write protection via WP pin only | No HOLD function; no SRWD/BP bits for fine-grained block protection; lower endurance (100k cycles) | Choose for cost-sensitive designs where full 1M-cycle endurance and multi-layer protection are not required. |
Compared with R1EX25512ATA00A, AT25DF041A offers higher speed and density but sacrifices HOLD functionality and hardware-enforced status register locking, while M95M04-DRMN6TP/K provides similar TSSOP-8 packaging and voltage range but trades off endurance, retention, and protection flexibility for lower unit cost.
Availability
R1EX25512ATA00A is available at Aetrix Electronics and suitable for consumer audio systems, smartphone camera modules, and industrial HMI panels requiring stable component supply, long-life data retention, and SPI-compatible nonvolatile memory.
Supply support for R1EX25512ATA00A 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 is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and consumer markets.
The R1EX25xxx series targets cost-sensitive, space-constrained embedded systems requiring robust, low-power SPI EEPROM with advanced data protection - optimized for consumer electronics and industrial control applications.
FAQ
What is the maximum clock frequency supported by R1EX25512ATA00A at 1.8 V?
R1EX25512ATA00A supports up to 3 MHz clock frequency across its full 1.8 V to 5.5 V supply range. This is explicitly specified in the AC Characteristics table for VCC = 1.8 V–5.5 V, ensuring reliable SPI communication even at minimum operating voltage. The device does not support 5 MHz operation below 2.5 V.
Does R1EX25512ATA00A support both SPI mode 0 and mode 3?
Yes, R1EX25512ATA00A is explicitly compatible with SPI mode 0 (CPOL = 0, CPHA = 0) and mode 3 (CPOL = 1, CPHA = 1), as stated in the Features section. This dual-mode support allows seamless integration with a wide range of host microcontrollers without requiring protocol translation or additional logic.
How does the HOLD pin function during an active SPI transaction on R1EX25512ATA00A?
On R1EX25512ATA00A, the HOLD pin pauses ongoing SPI communication without deselecting the device or resetting internal state. Activation requires S = low and C = low before driving HOLD low; Q goes high-impedance, and D/C become don't-care. Resuming requires HOLD high while C remains low - preserving address pointer and transaction context.
What protection mechanisms prevent unintended writes to R1EX25512ATA00A during power-up or brownout?
R1EX25512ATA00A incorporates power-on reset immunity: it requires S to be held at VCC during VCC transitions, mandates a 10 ms delay after reaching 1.8 V before asserting S low, and specifies VCC ramp rate < 2 µs/V. These measures prevent noise-induced spurious writes during power sequencing - confirmed in the "Data Protection at VCC On/Off" section.
Can R1EX25512ATA00A be used in automotive applications?
R1EX25512ATA00A is authorized by Renesas for consumer applications (cellular phones, camcorders, audio equipment). Use in automotive systems requires prior consultation with Renesas Electronics' sales office, as industrial or automotive qualification (e.g., AEC-Q100) is not claimed for this part per the datasheet notice on page 1.
R1EX25512ATA00A#S0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 5 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
R1EX25512ATA00A#S0 FAQ
1.How can I place an order for R1EX25512ATA00A#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1EX25512ATA00A#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 R1EX25512ATA00A#S0 reliable?
The price and inventory of R1EX25512ATA00A#S0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1EX25512ATA00A#S0 is usually 5 days.
3.What payment methods are accepted for R1EX25512ATA00A#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1EX25512ATA00A#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1EX25512ATA00A#S0?
R1EX25512ATA00A#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1EX25512ATA00A#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 R1EX25512ATA00A#S0?
For technical support, including R1EX25512ATA00A#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1EX25512ATA00A#S0 requirements.
6.How does Aetrix verify that R1EX25512ATA00A#S0 is sourced from the original manufacturer or authorized distributors?
All R1EX25512ATA00A#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 R1EX25512ATA00A#S0 meets industry standards.
7.What is the process for return or replacement of R1EX25512ATA00A#S0?
All R1EX25512ATA00A#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1EX25512ATA00A#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 R1EX25512ATA00A#S0 part is unused and in its original packaging.
Return procedure for R1EX25512ATA00A#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1EX25512ATA00A#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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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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AT24C08C-STUM-T
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