Winbond Electronics Corporation W25R128JVEIQ TR

Overview

W25R128JVEIQ TR from Winbond is a 128M-bit (16MB) serial NOR flash memory IC supporting Dual/Quad SPI and Replay Protection Monotonic Counter (RPMC) security. It operates from 2.7V to 3.6V, delivers up to 133MHz SPI clock (532MHz equivalent Quad I/O), features uniform 4KB sectors, and integrates three 256-byte OTP-locked security registers. It is used for secure code storage, XIP execution, and firmware update in industrial controllers and IoT edge devices.

For engineers reviewing the W25R128JVEIQ TR datasheet, W25R128JVEIQ TR pinout, W25R128JVEIQ TR application, or W25R128JVEIQ TR equivalent, this page provides verified pin assignments, RPMC cryptographic operation details, JEDEC SFDP compliance, 64-bit unique ID support, and real-world write-protection behavior under power-up transients and voltage droop conditions.

Technical Context

The W25R128JVEIQ TR implements a standard SPI bus with Mode 0 and Mode 3 compatibility, supports dual- and quad-I/O protocols using shared bidirectional IO0–IO3 pins, and uses hardware /CS tracking of VCC to prevent spurious writes during power ramp. Its internal architecture includes dedicated erase/program suspend/resume logic and volatile/non-volatile status register bits for granular protection control.

RPMC functionality relies on HMAC-SHA-256 authentication with four 32-bit monotonic counters, accessed via dedicated 9Bh command subcodes (e.g., 9Bh+02h for increment). Security register programming requires explicit Write Enable + OTP lock configuration, and all RPMC operations are isolated from standard flash access paths to prevent side-channel leakage.

Key Specifications

Pinout & Package

W25R128JVEIQ TR is supplied in an 8-pad WSON 8×6-mm package (Package Code E), with wettable flank leads for automated optical inspection. Pin 1 (/CS) is marked by a dot; pin 4 is GND; pin 5 is VCC; pins 1, 2, 3, 5, 6, 7, 8 are assigned as /CS, IO1, IO2, VCC, IO0, CLK, IO3 respectively - matching JEDEC MO-241AC standard.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial NOR flash memory applications.

Compared with W25R128JVEIQ TR, W25Q128JVSIM offers identical density and pinout but omits RPMC and security registers, while MT25QL128ABA8ESF-0SIT adds Octal capability at the cost of increased complexity and no cryptographic replay protection - making W25R128JVEIQ TR the sole option for standards-compliant secure boot in resource-constrained industrial nodes.

Availability

W25R128JVEIQ TR is available at Aetrix Electronics and suitable for industrial PLCs, secure IoT gateways, medical diagnostic equipment, and automotive camera modules requiring stable component supply, long-term lifecycle assurance, and certified security features.

Supply support for W25R128JVEIQ TR 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

Winbond Electronics is a Taiwan-based semiconductor company specializing in specialty memory solutions, including NOR/NAND flash, SRAM, and mobile DRAM, serving industrial, automotive, and communications markets since 1987.

The W25R series was designed specifically for secure embedded systems requiring cryptographic integrity verification, monotonic counter enforcement, and high-reliability flash storage - distinguishing it from general-purpose serial flash families.

FAQ

What is the package type and lead finish for W25R128JVEIQ TR?

W25R128JVEIQ TR uses an 8-pad WSON 8×6-mm package (JEDEC MO-241AC) with matte tin (Sn) lead finish and wettable flanks. This package supports automated optical inspection and meets IPC/JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) requirements for surface-mount assembly.

Does W25R128JVEIQ TR support Quad SPI mode out of reset?

No. W25R128JVEIQ TR powers up with Quad Enable (QE) bit cleared (0) in Status Register-1, requiring a Write Status Register-1 (01h) instruction to set QE=1 before Quad SPI instructions like EBh or 6Bh can be executed. This prevents unintended mode activation during initialization.

How does the RPMC feature in W25R128JVEIQ TR prevent firmware rollback attacks?

W25R128JVEIQ TR implements four independent 32-bit monotonic counters tied to HMAC-SHA-256 authentication. Each firmware update must include a valid counter increment signature; replaying an older signed image fails because the stored counter value no longer matches the expected increment, blocking execution.

What is the minimum /RESET pulse width required for W25R128JVEIQ TR?

W25R128JVEIQ TR requires a minimum /RESET low pulse width of 1 µs (tRESET*) for reliable hardware reset. While shorter pulses may occasionally succeed, Winbond specifies 1 µs as the guaranteed minimum to interrupt ongoing erase/program operations and restore initial power-on state.

Can W25R128JVEIQ TR be used in place of W25Q128JV without design changes?

No. Although W25R128JVEIQ TR shares pinout and basic SPI commands with W25Q128JV, it introduces RPMC-specific instructions (e.g., 9Bh subcodes), different security register layout, and mandatory counter initialization - requiring firmware and driver modifications to leverage or safely disable security features.