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Renesas R1EX24032ASA00A#S0
- Part No.:
- R1EX24032ASA00A#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- -
- Datasheet:
-
R1EX24032ASA00A#S0.pdf
- Description:
- EEPROM, 4KX8, SERIAL
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
R1EX24032ASA00A from Renesas Electronics is a 32-kbit (4096 × 8-bit) two-wire serial interface EEPROM with I²C-compatible bus interface, 1.8 V to 5.5 V single-supply operation, and 400 kHz clock frequency-designed for nonvolatile data storage in embedded control modules, consumer audio devices, and industrial sensor nodes requiring reliable byte/page write capability.
For engineers reviewing the R1EX24032ASA00A datasheet, R1EX24032ASA00A pinout, R1EX24032ASA00A application, or R1EX24032ASA00A equivalent, key selection considerations include its 32-byte page programming function, 5 ms write cycle time, −40°C to +85°C operating range, WP pin-based hardware write protection, and SOP-8 package compatibility with legacy board layouts.
Technical Context
This device implements a standard I²C protocol-compliant two-wire interface with fixed 1010 device code, supporting up to eight devices on one bus via A0–A2 address pins. It uses CMOS process and MNOS memory technology to achieve low-power operation and high reliability.
The internal architecture includes a serial-parallel converter, address generator, X/Y decoders, and high-voltage generator for write/erase operations. Write protection is implemented via the WP pin, enabling selective locking of the upper 8 kbit (25%) of memory when pulled high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 32 kbit (4096 × 8-bit) - supports firmware parameter storage, calibration data, and configuration registers in resource-constrained systems |
| Interface | I²C two-wire serial bus - enables simple, low-pin-count connection to microcontrollers without dedicated parallel buses |
| Supply voltage | 1.8 V to 5.5 V - compatible with both modern low-voltage logic and legacy 3.3 V/5 V systems |
| Max clock frequency | 400 kHz - ensures fast read/write throughput while maintaining noise immunity in electrically noisy environments |
| Page write size | 32 bytes per cycle - reduces total write time by up to 32× versus byte-write mode for bulk data updates |
| Write cycle time | 5 ms typical - defines minimum interval between successive write commands; critical for real-time logging applications |
| Endurance | 1,000,000 cycles at 25°C - guarantees long-term reliability for frequently updated settings such as user preferences or sensor offsets |
| Data retention | 100 years at 25°C - ensures stored configuration remains valid across product lifetime without refresh |
Pinout & Package
Package: 150-mil 8-pin plastic SOP (PRSP0008DF-B / FP-8DBV), lead-free, surface-mountable with standard JEDEC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device address inputs | Hard-wired to VCC/VSS to select one of eight possible I²C addresses on shared bus; enables multi-device topology |
| VSS | Ground reference | Return path for all internal circuitry; must be connected directly to system ground plane for stable operation |
| VCC | Power supply | Single 1.8–5.5 V supply powers logic and memory array; bypass capacitor required near pin for noise suppression |
| WP | Write protect control | Active-high signal that locks upper 8 kbit (25%) of memory; prevents accidental overwrites during power transitions |
| SCL | Serial clock input | Open-drain input synchronized to master clock; requires external pull-up resistor; max 400 kHz rate |
| SDA | Serial data I/O | Bidirectional open-drain line for address/data transfer; requires external pull-up; supports ACK/NACK handshake |
Key Features
| Feature | Design Value |
|---|---|
| Automatic page write | 32-byte burst writes reduce firmware overhead and improve update efficiency in telemetry or logging systems |
| Low standby current | 2 µA max enables battery-powered operation for >10 years in always-on sensor nodes with infrequent writes |
| Hardware write protection | WP pin allows selective locking of top 25% memory-ideal for preserving factory calibration or security keys |
| Wide temperature range | −40°C to +85°C operation supports deployment in automotive cabins, industrial enclosures, and outdoor equipment |
| Lead-free packaging | SOP-8 meets RoHS Directive requirements and supports automated reflow assembly without Pb contamination risk |
Applications
| Smart Home Thermostat | Industrial PLC I/O Module |
|---|---|
Use Scenario: Stores user-set temperature schedules, HVAC mode history, and sensor calibration offsets across power cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration memory interfacing with an ARM Cortex-M0+ host MCU via I²C at 100–400 kHz. Use Value: Enables field-upgradable settings without external backup battery; 100-year data retention eliminates need for periodic refresh. | Use Scenario: Retains I/O mapping tables, channel gain/offset coefficients, and firmware update flags in modular automation controllers. IC Role / Device Role / Timing Role: System-level parameter storage accessed during boot and runtime by a dual-core RISC-V processor. Use Value: 32-byte page writes accelerate coefficient updates during calibration routines; WP pin protects factory-trimmed values from runtime corruption. |
| Wireless Audio Transmitter | Medical Patient Monitor Front-End |
Use Scenario: Saves Bluetooth pairing records, volume presets, and EQ profiles in portable speaker systems. IC Role / Device Role / Timing Role: Low-power serial EEPROM sharing I²C bus with codec and RF SoC; operates at 1.8 V supply. Use Value: 1.8 V compatibility allows direct connection to ultra-low-power audio subsystems; 2 µA standby current extends battery life. | Use Scenario: Stores patient-specific alarm thresholds, transducer calibration data, and usage logs in bedside vital sign monitors. IC Role / Device Role / Timing Role: Safety-critical configuration storage accessed only during initialization and maintenance mode via isolated I²C isolator. Use Value: 1,000k endurance ensures reliable updates over 10+ years of clinical use; −40°C to +85°C rating supports sterilization and wide ambient operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C32D-SSHM-T | Same 32 kbit capacity, I²C interface, and SOP-8 package; rated for 1 MHz clock (vs. 400 kHz); lower 0.5 mA read current | Supports higher-speed host interfaces; slightly tighter AC timing margins may require layout review | Preferred when system clock exceeds 400 kHz or lower active current is critical |
| M95320-DRE6TG | 32 kbit SPI interface (not I²C); same voltage range and temperature grade; 10 MHz max clock | Requires SPI-capable MCU; incompatible bus protocol prevents drop-in replacement | Select only if host lacks I²C peripheral but has spare SPI resources |
Compared with AT24C32D-SSHM-T and M95320-DRE6TG, the R1EX24032ASA00A offers guaranteed 400 kHz I²C compliance with robust noise suppression (50 ns), integrated WP pin functionality, and Renesas' long-term industrial supply commitment-making it optimal for cost-sensitive, I²C-based designs where timing margin and hardware protection are prioritized over raw speed.
Availability
R1EX24032ASA00A is available at Aetrix Electronics and suitable for industrial sensor nodes, consumer audio devices, and embedded control modules requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for R1EX24032ASA00A 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 automotive, industrial, and IoT applications.
The R1EX24xxx series was designed specifically for reliable, low-voltage, I²C-based nonvolatile storage in space- and power-constrained consumer and industrial electronics-emphasizing endurance, data retention, and ease of integration.
FAQ
What is the maximum I²C clock frequency supported by the R1EX24032ASA00A?
The R1EX24032ASA00A supports a maximum I²C clock frequency of 400 kHz, as specified in its AC characteristics table. This value is guaranteed across the full operating temperature range (−40°C to +85°C) and supply voltage range (1.8 V to 5.5 V). Exceeding this frequency may result in timing violations, failed acknowledgments, or corrupted writes. The R1EX24032ASA00A does not support standard-mode (100 kHz) or fast-mode plus (1 MHz) I²C variants.
How does the write protect (WP) pin function on the R1EX24032ASA00A?
On the R1EX24032ASA00A, the WP pin provides hardware-level write protection: when pulled high (VIH), it locks the upper 8 kbit (25%) of memory-preventing accidental writes to critical calibration or security data. When pulled low (VIL), full read/write access is enabled across the entire 32 kbit array. The WP pin status is sampled at the start of each write cycle and does not affect read operations, which remain fully functional regardless of WP state.
What package type is used for the R1EX24032ASA00A?
The R1EX24032ASA00A uses a 150-mil 8-pin plastic SOP package, designated PRSP0008DF-B (JEITA code FP-8DBV). It features a 1.27 mm lead pitch, 3.9 mm × 4.89 mm body size, and Ni/Pd/Au-plated terminals. This package is RoHS-compliant, lead-free, and compatible with standard reflow soldering profiles and automated pick-and-place equipment.
Can the R1EX24032ASA00A operate from a 1.8 V supply?
Yes, the R1EX24032ASA00A is fully specified to operate from 1.8 V to 5.5 V, including all DC and AC parameters. At 1.8 V, it maintains 400 kHz I²C operation, 2 µA standby current, and 5 ms write cycle time. Its low-voltage capability enables direct integration with energy-efficient microcontrollers and battery-powered systems without level-shifting circuitry.
What is the endurance and data retention specification for the R1EX24032ASA00A?
The R1EX24032ASA00A guarantees 1,000,000 write/erase cycles at 25°C and 100 years of data retention at 25°C. At 85°C, endurance drops to 100,000 cycles and retention to 10 years-values confirmed in the memory cell characteristics table. These figures reflect actual tested performance under specified conditions and are not extrapolated or estimated.
R1EX24032ASA00A#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:
- -
R1EX24032ASA00A#S0 FAQ
1.How can I place an order for R1EX24032ASA00A#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1EX24032ASA00A#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 R1EX24032ASA00A#S0 reliable?
The price and inventory of R1EX24032ASA00A#S0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1EX24032ASA00A#S0 is usually 5 days.
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R1EX24032ASA00A#S0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R1EX24032ASA00A#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 R1EX24032ASA00A#S0?
For technical support, including R1EX24032ASA00A#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1EX24032ASA00A#S0 requirements.
6.How does Aetrix verify that R1EX24032ASA00A#S0 is sourced from the original manufacturer or authorized distributors?
All R1EX24032ASA00A#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 R1EX24032ASA00A#S0 meets industry standards.
7.What is the process for return or replacement of R1EX24032ASA00A#S0?
All R1EX24032ASA00A#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1EX24032ASA00A#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 R1EX24032ASA00A#S0 part is unused and in its original packaging.
Return procedure for R1EX24032ASA00A#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1EX24032ASA00A#S0 Tags
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M24C02-WMN6TP
STMicroelectronics
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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
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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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