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Renesas R1EX25016ASA00A#S0
- Part No.:
- R1EX25016ASA00A#S0
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
R1EX25016ASA00A#S0.pdf
- Description:
- IC EEPROM 16KBIT SPI 5MHZ 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,600
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Product details
Overview
R1EX25016ASA00A from Renesas Electronics is a 16-kbit (2048 × 8-bit) Serial Peripheral Interface (SPI) EEPROM with MONOS memory technology, operating from 1.8 V to 5.5 V supply, supporting up to 3 MHz clock at 1.8 V and 5 MHz at ≥2.5 V, and delivering 1,000k write cycles and 100-year data retention at 25 °C - used for nonvolatile parameter storage in consumer audio equipment and camcorders.
For engineers reviewing the R1EX25016ASA00A datasheet, R1EX25016ASA00A pinout, R1EX25016ASA00A application, or R1EX25016ASA00A equivalent, key selection considerations include SPI mode 0/3 compatibility, 32-byte page write capability, hardware write protection via W and HOLD pins, −40 to +85 °C industrial temperature range, and SOP-8 package with PRSP0008DF-B footprint.
Technical Context
This SPI EEPROM implements a serial interface compliant with SPI modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1), using a 16-bit address space with A15–A11 as don't-care bits for the 2048-word organization. It integrates an internal high-voltage generator for byte/page programming and features automatic page write with 32-byte boundaries.
The device uses a status register with WIP, WEL, BP1/BP0, and SRWD bits to manage write enable state, block protection granularity, and hardware-protected mode when combined with the W pin. All instructions - including READ, WRITE, WREN, WRDI, RDSR, and WRSR - are executed via 8-bit opcodes shifted on the rising edge of C, with data output synchronized to the falling edge of C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 kbit (2048 × 8-bit); supports full memory read/write with auto-incremented addressing |
| Supply voltage | 1.8 V to 5.5 V; enables direct interfacing with 1.8 V, 2.5 V, 3.3 V, and 5 V logic systems |
| Max clock frequency | 5 MHz at VCC ≥ 2.5 V; 3 MHz at VCC = 1.8 V to 5.5 V - defines maximum SPI transaction throughput |
| Page write size | 32 bytes per page; reduces total write time versus byte-write by up to 32× for contiguous data |
| Write cycle time | 5 ms minimum at VCC ≥ 2.5 V; 8 ms minimum at VCC = 1.8 V - determines worst-case firmware delay after write command |
| Endurance & retention | 1,000k cycles / 100 years @25 °C; ensures long-term reliability in infrequently updated configuration storage |
| Operating temperature | −40 °C to +85 °C; qualified for industrial-grade embedded applications outside automotive safety zones |
Pinout & Package
Package: 150-mil 8-pin plastic SOP (PRSP0008DF-B / FP-8DBV), lead-free, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Accepts 1.8–5.5 V; must be decoupled locally to suppress SPI switching noise |
| VSS | Ground reference | Common return path for all I/O and core logic; requires low-impedance PCB connection |
| S | Chip select input | Active-low enable; must fall before first clock edge to initiate instruction decode |
| C | Serial clock input | Drives timing for all SPI transactions; rising edge latches D, falling edge outputs Q |
| D | Serial data input | Receives opcodes, addresses, and write data; sampled on rising edge of C |
| Q | Serial data output | Drives read data and status register contents; changes on falling edge of C |
| W | Write protect input | Hardware lock for BP1/BP0 bits when SRWD = 1; must be stable during writes |
| HOLD | Communication pause control | Halts ongoing SPI transfer without deselecting device; Q goes high-Z while active |
Key Features
| Feature | Design Value |
|---|---|
| MONOS memory technology | Enables ultra-high endurance (1M cycles) and 100-year data retention without charge-pump wear-out mechanisms |
| 32-byte page programming | Reduces average write latency for multi-byte updates - e.g., 32-byte calibration table stored in one 5–8 ms cycle |
| Hardware + software write protection | Combines W pin and BP1/BP0 bits to define protected memory blocks (¼, ½, or full array), preventing accidental overwrites |
| SPI mode 0 and 3 support | Interoperates with diverse microcontrollers including ARM Cortex-M, Renesas RL78, and legacy 8051 derivatives |
| Low-power standby | 3 µA max ICC at 5.5 V enables always-on configuration storage in battery-backed systems |
Applications
| Audio Equipment Configuration Storage | Camcorder User Settings Retention |
|---|---|
Use Scenario: Storing equalizer presets, input gain settings, and microphone bias configurations across power cycles in portable digital audio players. IC Role / Device Role / Timing Role: Nonvolatile parameter register accessed via SPI during system boot and runtime adjustment. Use Value: Preserves user preferences without backup battery; MONOS cell stability ensures >10 years of daily reconfiguration. |
Use Scenario: Retaining white balance offsets, exposure compensation values, and lens focus calibration data between recording sessions. IC Role / Device Role / Timing Role: Dedicated SPI EEPROM for camera subsystem configuration, isolated from main SoC flash. Use Value: Enables fast, deterministic load of calibrated parameters at startup; 32-byte page write minimizes interrupt latency during auto-focus tuning. |
| Industrial Sensor Calibration Data | Smart Home Device Network Credentials |
Use Scenario: Holding factory-trimmed ADC offset/gain coefficients and temperature compensation tables for analog sensor modules. IC Role / Device Role / Timing Role: Read-only during normal operation; written once during production calibration via dedicated SPI interface. Use Value: Guarantees traceable calibration integrity; hardware write protection (W + SRWD) prevents field corruption of critical coefficients. |
Use Scenario: Securing Wi-Fi SSID/password, Zigbee network keys, and OTA update signatures in battery-powered smart thermostats. IC Role / Device Role / Timing Role: Secure nonvolatile storage for credentials accessed only during network initialization or key rotation. Use Value: Isolates sensitive data from main MCU flash; 1.8 V operation allows direct interface with ultra-low-power wireless SoCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25160B-SSHL-T (Microchip) | 16 kbit SPI EEPROM, 2.5–5.5 V supply, 20 MHz max clock, 1M endurance, SOIC-8 package | Higher speed and wider VCC range but lacks HOLD pin and MONOS-level retention | Preferred where faster write throughput is required and 100-year retention is not mandatory |
| M95160-DRMN8TP/K (STMicroelectronics) | 16 kbit SPI EEPROM, 1.8–5.5 V, 20 MHz, 1M endurance, TSSOP-8 package, built-in write protection | Same voltage range and endurance, but uses different status register layout and no HOLD functionality | Selected when TSSOP-8 footprint is preferred and HOLD signal is unused in target design |
Compared with R1EX25016ASA00A, AT25160B offers higher clock speed but sacrifices HOLD functionality and long-term data retention; M95160-DRMN8TP/K matches voltage and endurance specs but requires redesign for pinout and status register handling - making R1EX25016ASA00A optimal for cost-sensitive, hold-capable, long-life consumer applications.
Availability
R1EX25016ASA00A is available at Aetrix Electronics and suitable for consumer audio equipment, camcorders, and industrial sensor calibration systems requiring stable component supply, long-term data integrity, and industrial temperature operation.
Supply support for R1EX25016ASA00A 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and memory solutions for industrial, automotive, and consumer markets.
The R1EX25xxx series was designed specifically for reliable, low-voltage SPI-based configuration and calibration storage in space-constrained consumer electronics - emphasizing endurance, retention, and interoperability with legacy and modern MCUs.
FAQ
What is the maximum clock frequency supported by R1EX25016ASA00A?
R1EX25016ASA00A supports up to 5 MHz when VCC is 2.5 V to 5.5 V, and up to 3 MHz across the full 1.8 V to 5.5 V range. The lower frequency limit at 1.8 V ensures stable timing margins under minimum supply conditions, and both modes comply with SPI clock setup/hold requirements per the AC characteristics table in the datasheet.
Does R1EX25016ASA00A support hardware write protection?
Yes, R1EX25016ASA00A supports hardware write protection through the combination of the W pin and the SRWD bit in the status register. When SRWD = 1 and W is driven low, the device enters Hardware Protected Mode, locking BP1/BP0 and SRWD bits against modification - preventing accidental or malicious overwrite of protected memory regions.
What package type is used for R1EX25016ASA00A?
R1EX25016ASA00A uses a 150-mil 8-pin plastic SOP package (PRSP0008DF-B / FP-8DBV), which is lead-free and RoHS-compliant. This standard footprint is compatible with automated SMT assembly and widely supported in PCB libraries for consumer and industrial designs.
How many write cycles can R1EX25016ASA00A endure at 85 °C?
R1EX25016ASA00A guarantees 100k write cycles at 85 °C, as specified in the Memory Cell Characteristics table. This derated endurance reflects accelerated wear at elevated temperature while maintaining full functionality within its −40 to +85 °C operating range.
Is R1EX25016ASA00A compatible with SPI mode 1 or 2?
No, R1EX25016ASA00A is explicitly compatible only with SPI mode 0 (CPOL = 0, CPHA = 0) and mode 3 (CPOL = 1, CPHA = 1), as stated in the Features section. It does not support mode 1 or mode 2 due to fixed sampling on the rising edge of C and output on the falling edge - a requirement incompatible with CPHA = 1 in mode 1 or CPOL = 1 in mode 2.
R1EX25016ASA00A#S0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K 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-SOP
R1EX25016ASA00A#S0 FAQ
1.How can I place an order for R1EX25016ASA00A#S0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R1EX25016ASA00A#S0 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of R1EX25016ASA00A#S0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R1EX25016ASA00A#S0 is usually 5 days.
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For technical support, including R1EX25016ASA00A#S0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R1EX25016ASA00A#S0 requirements.
6.How does Aetrix verify that R1EX25016ASA00A#S0 is sourced from the original manufacturer or authorized distributors?
All R1EX25016ASA00A#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 R1EX25016ASA00A#S0 meets industry standards.
7.What is the process for return or replacement of R1EX25016ASA00A#S0?
All R1EX25016ASA00A#S0 units undergo pre-shipment inspection (PSI). If there is an issue with R1EX25016ASA00A#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 R1EX25016ASA00A#S0 part is unused and in its original packaging.
Return procedure for R1EX25016ASA00A#S0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R1EX25016ASA00A#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
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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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