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Renesas R1EX25032ATA00A#S0
- Part No.:
- R1EX25032ATA00A#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R1EX25032ATA00A#S0.pdf
- Description:
- IC EEPROM 32KBIT SPI 5MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:247
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Product details
Overview
R1EX25032ATA00A from Renesas Electronics is a 32-kbit (4096 × 8-bit) Serial Peripheral Interface (SPI) EEPROM with MONOS memory technology, operating from 1.8 V to 5.5 V, supporting up to 5 MHz clock frequency at ≥2.5 V, and housed in an 8-pin TSSOP package. It delivers high reliability for nonvolatile data storage in embedded control systems requiring fast page writes and low-power operation.
For engineers reviewing the R1EX25032ATA00A datasheet, R1EX25032ATA00A pinout, R1EX25032ATA00A application, or R1EX25032ATA00A equivalent, key selection considerations include SPI mode 0/3 compatibility, 32-byte page programming, −40°C to +85°C industrial temperature range, hardware write protection via W and HOLD pins, and 1,000k endurance cycles at 25°C.
Technical Context
This SPI EEPROM implements a serial interface compliant with SPI bus standards, supporting both Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1). Its internal architecture includes a 32-byte page buffer, status register with WIP/WEL/BP1/BP0 bits, and hardware-protected mode enabled by SRWD bit and W pin logic.
It uses MONOS (Metal-Oxide-Nitride-Oxide-Silicon) charge-trapping technology for enhanced data retention and endurance. The device features automatic page write execution upon chip select deactivation, with self-timed write cycles completing in ≤5 ms and full data retention guaranteed for 100 years at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 32 kbit (4096 × 8-bit), sufficient for firmware parameter tables or calibration data in resource-constrained microcontrollers |
| Supply voltage range | 1.8 V to 5.5 V - supports direct interfacing with 1.8 V, 3.3 V, and 5 V logic domains without level shifting |
| Max clock frequency | 5 MHz at VCC ≥ 2.5 V - enables fast read/write transfers (e.g., ~6.4 µs per byte read) in real-time systems |
| Page size | 32 bytes - minimizes write latency when updating configuration blocks aligned to page boundaries |
| Endurance | 1,000,000 write/erase cycles at 25°C - suitable for logging or counter applications with frequent updates |
| Data retention | 100 years at 25°C - ensures long-term validity of stored calibration, serial numbers, or security keys |
| Operating temperature | −40°C to +85°C - qualified for industrial-grade embedded controllers and metering equipment |
| Package | TSSOP-8 (PTSP0008JC-B), 3.0 mm × 4.4 mm footprint - compact surface-mount solution compatible with automated PCB assembly |
Pinout & Package
Package: 8-pin plastic TSSOP (PTSP0008JC-B / TTP-8DAV), lead-free, tape-and-reel packaging (3,000 units per reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VCC | Power supply input | Accepts 1.8–5.5 V; decoupling capacitor required near pin for stable SPI communication |
| 2: HOLD | Serial interface pause control | Halts ongoing SPI transfer without deselecting chip; enables multi-master arbitration or priority interrupt handling |
| 3: C | Serial clock input | Edge-triggered timing signal; rising edge latches D input, falling edge outputs Q data - defines SPI timing compliance |
| 4: D | Serial data input | Receives instruction opcodes (e.g., 0x06 for WREN), addresses, and write data; sampled on C rising edge |
| 5: S | Chip select input | Active-low enable; must fall before first clock edge to initiate any instruction; high-Z output when high |
| 6: Q | Serial data output | Tri-state output driven on C falling edge; requires external pull-up if shared bus; high-impedance when S high or HOLD active |
| 7: W | Hardware write protect | Combines with SRWD bit to lock status register; disables WRITE/WRSR when pulled low in Hardware Protected Mode |
| 8: VSS | Ground reference | Return path for all I/O and core circuitry; must be low-impedance connection to minimize noise coupling into SPI lines |
Key Features
| Feature | Design Value |
|---|---|
| MONOS memory technology | Enables 100-year data retention and 1M-cycle endurance without oxide degradation typical of floating-gate EEPROMs |
| 32-byte page programming | Reduces average write time per byte by >90% vs. byte-write mode - critical for rapid firmware update staging |
| SPI Mode 0 and Mode 3 support | Ensures interoperability with diverse MCUs including ARM Cortex-M, Renesas RX, and legacy 8-bit controllers |
| Hardware + software write protection | BP1/BP0 bits + W pin + SRWD bit allow layered protection: block-level software lock and permanent hardware freeze of status register |
| Low-power standby current | ≤2 µA max at 5.5 V - extends battery life in always-on IoT sensors or energy-harvesting nodes |
| Industrial temperature range | −40°C to +85°C operation confirmed across full voltage and timing specs - eliminates derating concerns in factory automation |
Applications
| Smart Energy Meters | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Storing tariff schedules, meter calibration constants, and tamper-event logs across power outages. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed 100-year data retention and 1M-cycle endurance for daily log updates. Use Value: Eliminates need for backup batteries or supercapacitors while maintaining regulatory compliance for metrology data integrity. |
Use Scenario: Holding module identification, channel scaling factors, and diagnostic history in DIN-rail mounted I/O expanders. IC Role / Device Role / Timing Role: SPI-configurable parameter store accessed during cold start and runtime reconfiguration via host controller. Use Value: Enables field-upgradable calibration without firmware reflashing; 32-byte page writes reduce configuration time by 75% vs. byte-wise updates. |
| Medical Diagnostic Handhelds | Automotive Body Control Modules |
Use Scenario: Saving user preferences, sensor offset corrections, and last-test parameters in portable ultrasound or ECG devices. IC Role / Device Role / Timing Role: Low-voltage (1.8 V) SPI EEPROM interfaced directly to 1.8 V MCU I/O, supporting battery-backed operation. Use Value: Meets IEC 62304 Class B software requirements for persistent data with verified 100-year retention at end-user ambient conditions. |
Use Scenario: Storing seat position memory, mirror presets, and lighting profiles in 12 V automotive subsystems with wide-input DC-DC regulation. IC Role / Device Role / Timing Role: Industrial-grade EEPROM tolerant of load-dump transients and thermal cycling, accessed during ignition-on initialization. Use Value: Qualified for −40°C to +85°C operation without derating; hardware write protect (W pin) prevents corruption during electrical noise events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25320B-MAHL-T (Microchip) | 32 kbit SPI EEPROM, 2.5–5.5 V supply, 20 MHz max clock, SOIC-8/TSSOP-8 packages available | Higher speed but narrower voltage range; lacks HOLD pin and hardware-protected mode with SRWD+W | Select when system requires >5 MHz throughput and operates exclusively at ≥2.5 V; verify absence of HOLD necessity in host protocol |
| M95320-DFMN6TP/K (STMicroelectronics) | 32 kbit SPI EEPROM, 1.8–5.5 V, 20 MHz max clock, TSSOP-8, built-in write protection via WP pin only (no SRWD/HOLD) | No status register write disable or HOLD functionality; simpler protection model with single WP pin | Prefer for cost-sensitive designs where full hardware+software protection layer is unnecessary and higher clock rate is prioritized |
Compared with AT25320B-MAHL-T and M95320-DFMN6TP/K, R1EX25032ATA00A provides unique MONOS-based 100-year retention and integrated HOLD/SRWD-based hardware protection - critical for industrial logging and safety-critical parameter storage where long-term data integrity outweighs raw speed.
Availability
R1EX25032ATA00A is available at Aetrix Electronics and suitable for smart energy meters, industrial PLC I/O modules, medical handheld diagnostics, automotive body control units, and factory automation controllers requiring stable component supply across extended product lifecycles.
Supply support for R1EX25032ATA00A 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 delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and enterprise applications.
The R1EX25xxx Series was designed specifically for robust, low-power, high-endurance nonvolatile storage in industrial and consumer electronics - emphasizing SPI compatibility, extended temperature operation, and advanced MONOS memory reliability.
FAQ
What is the maximum clock frequency supported by R1EX25032ATA00A?
R1EX25032ATA00A supports up to 5 MHz clock frequency when VCC is 2.5 V to 5.5 V, and up to 3 MHz when VCC is 1.8 V to 5.5 V. These values are specified in AC Characteristics tables and validated across the full −40°C to +85°C operating temperature range. Exceeding these frequencies may result in read/write failures or timing violations.
Does R1EX25032ATA00A support SPI Mode 0 and Mode 3 only?
Yes, R1EX25032ATA00A explicitly supports SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1), as confirmed in the Features section and Pin Function description. It does not support Mode 1 or Mode 2. Host MCU SPI peripherals must be configured accordingly to ensure reliable communication with R1EX25032ATA00A.
How does the HOLD pin function in R1EX25032ATA00A?
The HOLD pin in R1EX25032ATA00A pauses ongoing SPI communication without deselecting the device. When asserted low while chip select (S) is active, Q goes high-impedance and D/C are ignored. This allows host processors to service higher-priority interrupts mid-transfer. R1EX25032ATA00A resumes operation on next C edge after HOLD is deasserted, preserving internal state.
What is the page size and write cycle time for R1EX25032ATA00A?
R1EX25032ATA00A has a fixed 32-byte page size and a maximum write cycle time of 5 ms per page. This applies to both single-byte and multi-byte writes within a page boundary. The device automatically executes page programming upon chip select (S) deactivation, eliminating need for host-side timing delays between bytes in the same page.
Is R1EX25032ATA00A qualified for automotive applications?
R1EX25032ATA00A is rated for −40°C to +85°C operation and classified as "Standard" quality grade per Renesas documentation, intended for industrial and consumer applications. While it meets temperature and reliability specs used in some automotive body electronics, Renesas explicitly states that serial EEPROMs like R1EX25032ATA00A require sales office consultation before use in automotive systems - no AEC-Q100 qualification is claimed.
Can R1EX25032ATA00A be used with a 1.8 V microcontroller without level shifters?
Yes, R1EX25032ATA00A supports 1.8 V to 5.5 V operation and specifies VIH as VCC × 0.7 and VIL as VCC × 0.3, making it fully compatible with 1.8 V logic levels. Input leakage current remains ≤2 µA, and output drive strength (VOL ≤ 0.4 V at 1.5 mA) ensures clean signaling - no level shifter is required when interfacing with 1.8 V MCUs.
R1EX25032ATA00A#S0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 32Kbit
- Memory Organization:
- 4K 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
R1EX25032ATA00A#S0 FAQ
1.How can I place an order for R1EX25032ATA00A#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1EX25032ATA00A#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 R1EX25032ATA00A#S0 reliable?
The price and inventory of R1EX25032ATA00A#S0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1EX25032ATA00A#S0 is usually 5 days.
3.What payment methods are accepted for R1EX25032ATA00A#S0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R1EX25032ATA00A#S0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R1EX25032ATA00A#S0?
R1EX25032ATA00A#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1EX25032ATA00A#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 R1EX25032ATA00A#S0?
For technical support, including R1EX25032ATA00A#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1EX25032ATA00A#S0 requirements.
6.How does Aetrix verify that R1EX25032ATA00A#S0 is sourced from the original manufacturer or authorized distributors?
All R1EX25032ATA00A#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 R1EX25032ATA00A#S0 meets industry standards.
7.What is the process for return or replacement of R1EX25032ATA00A#S0?
All R1EX25032ATA00A#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1EX25032ATA00A#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 R1EX25032ATA00A#S0 part is unused and in its original packaging.
Return procedure for R1EX25032ATA00A#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1EX25032ATA00A#S0 Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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