Renesas R1EX24016ATA00I#S0

Overview

R1EX24016ATA00I from Renesas Electronics is a 16-kbit (2048 × 8-bit) two-wire serial EEPROM with I²C interface, operating from 1.8 V to 5.5 V, supporting 400 kHz clock frequency, and rated for −40°C to +85°C industrial temperature range. It delivers 16-byte page write capability, 5 ms write cycle time, and is housed in an 8-pin TSSOP package (PTSP0008JC-B / TTP-8DAV).

For engineers reviewing the R1EX24016ATA00I datasheet, R1EX24016ATA00I pinout, R1EX24016ATA00I application, or R1EX24016ATA00I equivalent, this device serves as a low-power, high-reliability nonvolatile memory for configuration storage, calibration data retention, and system parameter logging in space-constrained embedded systems.

Technical Context

The R1EX24016ATA00I implements a standard I²C-compatible two-wire serial interface with fixed 4-bit device code "1010", 3-bit hardware-selectable address (A0–A2), and R/W bit control. Its internal architecture includes a 16-byte page buffer, automatic address incrementing during page write, and on-chip high-voltage generation for memory programming.

It features write protection via dedicated WP pin (enabling upper 8 kbit protection when high), supports acknowledge polling for write-cycle completion detection, and incorporates noise suppression (50 ns) and power-on reset circuitry to prevent unintended writes during VCC transitions.

Key Specifications

Pinout & Package

Package: 8-pin TSSOP (PTSP0008JC-B / TTP-8DAV), 4.4 mm × 3.0 mm footprint, 0.65 mm lead pitch, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Compared with AT24C16D-SSHM-T and BR24G16FJ-3GE2, the R1EX24016ATA00I offers superior data retention (100 years @25°C), tighter standby current (2 µA), and Renesas' industrial-grade qualification-making it optimal for long-lifecycle, ultra-low-power, and mission-critical configuration storage.

Availability

R1EX24016ATA00I is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical diagnostics equipment requiring stable component supply, long-term data integrity, and RoHS-compliant packaging.

Supply support for R1EX24016ATA00I 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 infrastructure markets.

The R1EX24xxx series was designed specifically for reliable, low-voltage, space-efficient nonvolatile storage in embedded systems where write endurance, data retention, and I²C simplicity are critical.

FAQ

What is the maximum I²C clock frequency supported by the R1EX24016ATA00I?

The R1EX24016ATA00I supports a maximum I²C clock frequency of 400 kHz, compliant with standard-mode I²C specifications. This allows reliable communication with most microcontrollers without requiring high-speed mode hardware or timing adjustments. The device maintains full functionality-including page write, acknowledge polling, and write protection-across the entire 1.8 V to 5.5 V supply range at this clock rate. Exceeding 400 kHz may result in timing violations or failed acknowledgments.

How does the write protection (WP) pin function on the R1EX24016ATA00I?

On the R1EX24016ATA00I, the WP pin enables hardware-based write protection: when pulled high (VIH), it locks the upper 8 kbit (addresses 0x800–0xFFF) from write operations while allowing full read access; when low (VIL), all 16 kbit are writable. This feature operates independently of software commands and remains active during power-up sequences. The WP pin must be stabilized before VCC reaches valid logic levels to ensure correct initialization per the device's power-on reset behavior.

What is the page write capability of the R1EX24016ATA00I, and how does it improve performance?

The R1EX24016ATA00I supports 16-byte page write mode, allowing up to 16 bytes to be written in a single internal cycle after one address setup. This reduces average write time per byte by up to 16× compared to individual byte writes-critical for updating configuration blocks or calibration tables. Page boundaries align to 16-byte offsets (e.g., 0x000–0x00F), and attempting to cross boundaries causes automatic rollover within the same page, preventing unintended overwrites if not managed in firmware.

Does the R1EX24016ATA00I require external components for I²C operation?

Yes-the R1EX24016ATA00I requires external pull-up resistors on both SCL and SDA lines to ensure proper I²C bus signaling. Recommended values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and speed; for 400 kHz operation with typical PCB traces, 4.7 kΩ is commonly used. No external capacitors or voltage translators are needed, as the device operates natively from 1.8 V to 5.5 V and integrates noise suppression and power-on reset circuitry.

What are the key reliability metrics for the R1EX24016ATA00I?

The R1EX24016ATA00I guarantees 1,000,000 write/erase cycles at 25°C and 100,000 cycles at 85°C, with data retention of 100 years at 25°C and 10 years at 85°C. These metrics are validated per JEDEC standards and reflect actual endurance under specified operating conditions-not typical or average values. The device also meets RoHS requirements and is qualified for industrial temperature range (−40°C to +85°C), making R1EX24016ATA00I suitable for long-service-life applications where field replacement is impractical.