Renesas R1EX25002ATA00I#S0

Overview

R1EX25002ATA00I from Renesas Electronics is a 2 kbit (256 × 8-bit) Serial Peripheral Interface (SPI) EEPROM featuring MONOS memory technology, 1.8–5.5 V single-supply operation, 3 MHz max clock frequency at 1.8 V, 5 ms write cycle time, and industrial temperature range (−40 to +85°C). It serves as nonvolatile configuration storage in microcontroller-based sensor nodes and power management subsystems.

For engineers reviewing the R1EX25002ATA00I datasheet, R1EX25002ATA00I pinout, R1EX25002ATA00I application, or R1EX25002ATA00I equivalent, this device supports SPI Mode 0 and Mode 3, offers hardware write protection via W pin, includes HOLD functionality for communication pause, and provides 16-byte page programming with 1,000k endurance cycles and 100-year data retention 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 integrates a high-voltage generator, Y-select/sense amplifier, serial-parallel converter, and address generator controlled by dedicated logic.

It uses MONOS (Metal-Oxide-Nitride-Oxide-Silicon) charge-trapping memory cells fabricated on a CMOS process, enabling low-power active and standby modes (2.5 mA max write current, 2.0 μA max standby current), along with robust data retention and endurance specifications validated across −40 to +85°C.

Key Specifications

Pinout & Package

Package: 8-pin plastic TSSOP (JEITA code PTSP0008JC-B / Renesas code TTP-8DAV), lead-free, halogen-free, 3,000 units per reel.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT25020B-SSHL-T and M95020-DFMN6TP/K, the R1EX25002ATA00I uniquely combines 1.8 V operation, HOLD functionality, and MONOS-based reliability in TSSOP-8 - making it optimal for ultra-low-power, interrupt-tolerant embedded systems where voltage flexibility and communication resilience are prioritized over raw speed.

Availability

R1EX25002ATA00I is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, smart energy meter firmware patch storage, and medical infusion pump safety logging requiring stable component supply across extended product lifecycles.

Supply support for R1EX25002ATA00I 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 is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT applications.

The R1EX25xxx series targets cost-sensitive, low-power embedded systems needing reliable, SPI-compatible nonvolatile storage with extended temperature capability and advanced data protection features.

FAQ

What is the maximum clock frequency supported by R1EX25002ATA00I at 1.8 V?

The R1EX25002ATA00I supports a maximum clock frequency of 3 MHz when operating at 1.8 V to 5.5 V supply voltage. This specification is explicitly defined in the AC Characteristics table on page 6 of the R10DS0106EJ0200 Rev.2.00 datasheet. At higher supply voltages (2.5–5.5 V), the device supports up to 5 MHz, but the 3 MHz limit applies across the full 1.8 V minimum rating to ensure timing margin and reliability.

Does R1EX25002ATA00I support both SPI Mode 0 and Mode 3?

Yes, the R1EX25002ATA00I supports both SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1), as confirmed in the Features section on page 1 of the R10DS0106EJ0200 Rev.2.00 datasheet. This dual-mode compatibility allows seamless integration with diverse host controllers without requiring hardware modifications or protocol translation layers.

How does the HOLD function operate on R1EX25002ATA00I?

The HOLD function on R1EX25002ATA00I pauses ongoing SPI communication without deselecting the device. To activate HOLD, the HOLD pin must be driven low while the serial clock (C) is low; deactivation requires HOLD high while C remains low. During HOLD, Q goes high-impedance and D/C are ignored, preserving internal address and state - a feature documented in detail on pages 8 and 17 of the R10DS0106EJ0200 Rev.2.00 datasheet.

What is the page size and write time for R1EX25002ATA00I?

The R1EX25002ATA00I implements a 16-byte page programming function with a fixed 5 ms write cycle time (tW), as specified in the Features section (page 1) and AC Characteristics table (pages 5–6) of the R10DS0106EJ0200 Rev.2.00 datasheet. Page writes improve efficiency over byte-wise programming, and the 5 ms duration is guaranteed across the full −40°C to +85°C operating range.

Is R1EX25002ATA00I lead-free and halogen-free?

Yes, the R1EX25002ATA00I#S0 is a lead-free product, as indicated by the "#S0" suffix and confirmed in the Features section (page 1) and Ordering Information table (page 2) of the R10DS0106EJ0200 Rev.2.00 datasheet. However, it is not halogen-free - only the "#U0" suffix variants (e.g., R1EX25004ATA00I#U0) carry halogen-free certification.