Renesas R1EV24002ASAS0I#K0

Overview

R1EV24002ASAS0I#K0 from Renesas Electronics is a 2 kbit (256 × 8-bit) two-wire serial EEPROM with I²C interface, MONOS memory technology, and SOP-8 package. It operates from 2.5 V to 5.5 V, supports 400 kHz clock frequency, and delivers 1 mA max read current, 2.5 mA max write current, and 2 μA max standby current. It is used for nonvolatile parameter storage in industrial control modules, sensor calibration data retention, and configuration backup in embedded systems.

For engineers reviewing the R1EV24002ASAS0I#K0 datasheet, R1EV24002ASAS0I#K0 pinout, R1EV24002ASAS0I#K0 application, or R1EV24002ASAS0I#K0 equivalent, key selection considerations include its 8-byte page write capability, 5 ms write cycle time, −40°C to +85°C operating range, WP pin-based hardware write protection, and lead-free/halogen-free SOP-8 packaging compliant with industrial environmental requirements.

Technical Context

The R1EV24002ASAS0I#K0 implements a two-wire I²C-compatible serial interface with fixed device code "1010", supporting up to eight devices on a shared bus via A0–A2 address pins. Its internal architecture includes a serial-parallel converter, high-voltage generator for MONOS cell programming, and address/data latches synchronized to SCL edges.

Write operations are controlled by the WP pin state: when WP = VIL, full 2 kbit read/write is enabled; when WP = VIH, all writes are blocked and ACK is suppressed after address receipt. Acknowledge polling is supported to detect write completion without fixed timing delays.

Key Specifications

Pinout & Package

Package: 150-mil 8-pin plastic SOP (PRSP0008DF-B / FP-8DBV), lead-free and halogen-free, 4,000 units per reel.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C02D-SSHM-T and M95020-DFMN6TP, the R1EV24002ASAS0I#K0 provides superior long-term data integrity (100-year retention), built-in noise immunity (50 ns suppression), and seamless integration into I²C-based industrial designs without layout or firmware changes.

Availability

R1EV24002ASAS0I#K0 is available at Aetrix Electronics and suitable for industrial sensor calibration storage, embedded system configuration backup, and motor drive fault log buffering requiring stable component supply across extended product lifecycles.

Supply support for R1EV24002ASAS0I#K0 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, power, and memory solutions for industrial, automotive, and infrastructure markets.

The R1EV24xxx series was designed specifically for industrial-grade nonvolatile data storage where high reliability, wide temperature operation, and I²C compatibility are mandatory-targeting applications such as programmable logic controllers, motor drives, and sensor signal conditioning modules.

FAQ

What is the maximum I²C clock frequency supported by the R1EV24002ASAS0I#K0?

The R1EV24002ASAS0I#K0 supports a maximum I²C clock frequency of 400 kHz, as specified in its AC characteristics table under fSCL. This allows efficient data transfer while maintaining compatibility with standard I²C peripherals across microcontrollers and SoCs. The device meets timing requirements including tLOW ≥ 1200 ns and tHIGH ≥ 600 ns at this rate, and includes 50 ns noise suppression on SCL and SDA inputs to ensure robust operation in electrically noisy environments.

How does the WP pin function on the R1EV24002ASAS0I#K0?

The WP (Write Protect) pin on the R1EV24002ASAS0I#K0 is an active-high hardware lock. When WP is driven to VIH (≥ 0.7 × VCC), all write operations-including byte and page writes-are disabled, and the device responds with a NO ACK ('1') after receiving the device address. When WP is low or floating (internally pulled down to VSS), full read/write access is enabled. This feature enables secure, irreversible configuration lockdown after manufacturing provisioning.

What is the endurance and data retention specification for the R1EV24002ASAS0I#K0?

The R1EV24002ASAS0I#K0 guarantees 1,000,000 write/erase cycles at 25°C and 100,000 cycles at 85°C. Data retention is rated at 100 years minimum at 25°C and 10 years minimum at 85°C. These values are measured per memory cell and reflect the MONOS floating-gate technology's resistance to charge loss over time-critical for applications requiring decades-long validity of calibration data or security keys without refresh.

Does the R1EV24002ASAS0I#K0 require external pull-up resistors on the SDA and SCL lines?

Yes, the R1EV24002ASAS0I#K0 requires external pull-up resistors on both SDA and SCL lines because its SDA pin uses an open-drain output structure and SCL is a CMOS input. The datasheet specifies VOL ≤ 0.4 V at IOL = 3.0 mA, so pull-up values must be selected considering bus capacitance, VCC level, and desired rise time. Typical values range from 2.2 kΩ to 10 kΩ for 3.3 V systems with ≤400 pF total bus capacitance.

Can multiple R1EV24002ASAS0I#K0 devices share the same I²C bus?

Yes, up to eight R1EV24002ASAS0I#K0 devices can share a single I²C bus using the A0, A1, and A2 address pins. Each device is assigned a unique 3-bit hardware address (000–111), forming part of the 7-bit I²C slave address (1010xxx). All address pins are internally pulled down, so unconnected pins default to '0', enabling simple configuration via VSS/VCC ties without additional components.