Winbond Electronics Corporation W29GL128CH9T TR

Overview

W29GL128CH9T TR from Winbond is a 128-Mbit (16 MB) parallel NOR Flash memory IC with uniform 128k-byte sectors, 90 ns random access time, 25 ns page access time, and single 3.0 V supply (2.7–3.6 V) operation. It supports byte/word mode via #BYTE pin, features hardware write protection (#WP/ACC), Ready/#Busy status output, and is used in embedded boot code storage for industrial controllers and network equipment.

For engineers reviewing the W29GL128CH9T TR datasheet, W29GL128CH9T TR pinout, W29GL128CH9T TR application, or W29GL128CH9T TR equivalent, key selection criteria include sector erase suspend/resume capability, CFI interface compliance, deep power-down mode (5 µA typical), EVIO voltage flexibility (1.65–VCC), and 100,000 program/erase cycles - all critical for firmware update reliability and low-power standby design.

Technical Context

The W29GL128CH9T TR implements a parallel asynchronous interface with #CE/#OE/#WE control logic and supports both byte (x8) and word (x16) data bus configurations via the #BYTE pin. Its architecture includes 128 uniform 128-kilobyte sectors, a 32-word write buffer, and an 8-word page read buffer to accelerate sequential programming and burst reads.

It integrates Enhanced Variable IO (EVIO) control, where input/output voltage thresholds track EVIO pin voltage (1.65–VCC), enabling interoperability with mixed-voltage systems. Hardware data protection is enforced via #WP/ACC pin (sector lock/unlock acceleration and top/bottom protection) and a dedicated Secured Silicon Sector (256-byte factory- or customer-lockable ID region).

Key Specifications

Pinout & Package

W29GL128CH9T TR is packaged in a 56-pin TSOP-I (14 × 20 mm), RoHS-compliant, surface-mount package with standard JEDEC footprint. Pin functions are defined per Winbond's official datasheet Rev. H.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar parallel NOR Flash memory applications.

Compared with S29GL128S11TFI010 and MX29GL128FHT2I-90G, the W29GL128CH9T TR uniquely combines EVIO voltage adaptability, 5 µA deep power-down, and a dedicated Secured Silicon Sector - making it optimal for mixed-voltage, ultra-low-power, and security-critical embedded designs.

Availability

W29GL128CH9T TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, network router boot code, and medical diagnostic device BIOS requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for W29GL128CH9T 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 for industrial, automotive, and communications markets.

The W29GL128CH9T TR belongs to Winbond's W29GL family of high-performance parallel NOR Flash devices, designed specifically for embedded boot code storage where fast random access, robust data retention, and hardware-level security features are mandatory.

FAQ

What is the pin configuration and package type of the W29GL128CH9T TR?

The W29GL128CH9T TR uses a 56-pin TSOP-I (14 × 20 mm) package with standard JEDEC pinout. Key signals include A0–A22 address lines, DQ0–DQ15 bidirectional data bus, #CE/#OE/#WE controls, #WP/ACC for hardware protection and programming acceleration, RY/#BY for status feedback, and EVIO for voltage-flexible I/O threshold setting. Pin functions are fully documented in Winbond's datasheet Revision H.

Does the W29GL128CH9T TR support both byte and word data modes?

Yes, the W29GL128CH9T TR supports configurable x8 and x16 operation via the #BYTE pin: when #BYTE = VIH, it operates in 16-bit word mode using A0–A22; when #BYTE = VIL, it operates in 8-bit byte mode with DQ15 repurposed as address bit A-1. This dual-mode capability simplifies integration across microcontrollers with varying bus widths without redesigning PCB layout.

What is the purpose of the Secured Silicon Sector in the W29GL128CH9T TR?

The Secured Silicon Sector in the W29GL128CH9T TR is a dedicated 256-byte region that can be permanently programmed and locked at factory or by the customer. It stores a unique 128-word electronic serial number and supports secure identity verification. Once locked, its contents cannot be altered - providing tamper-resistant device authentication for firmware validation and regulatory compliance in medical and automotive applications.

How does the erase suspend/resume feature work in the W29GL128CH9T TR?

The W29GL128CH9T TR allows active sector erase operations to be suspended within 20 µs upon receiving an Erase Suspend command. During suspension, the device enters Erase-Suspended Read mode, enabling reads or writes to non-erasing sectors. An Erase Resume command restarts the suspended erase from the exact point of interruption. This ensures deterministic latency for time-critical tasks like packet processing during firmware updates.

Is the W29GL128CH9T TR compatible with the Common Flash Interface (CFI)?

Yes, the W29GL128CH9T TR fully supports CFI version 1.3, allowing host systems to automatically query device geometry, timing parameters, and command sets via standardized register reads. This eliminates hardcoded flash initialization routines and enables single bootloader binaries to support multiple NOR Flash variants - reducing firmware development and validation effort across product families.