Winbond Electronics Corporation W29GL064CL7T

Overview

W29GL064CL7T from Winbond is a 64 Mbit (8 MB) parallel NOR Flash memory with uniform and boot-sector architecture, 3.0 V single-supply operation (2.7–3.6 V), 70 ns random access time, and 25 ns page read access. It supports byte/word configuration via #BYTE pin, hardware write protection via #WP/ACC, and CFI-compliant identification for system compatibility. Used in embedded firmware storage for industrial controllers and network boot loaders.

For engineers reviewing the W29GL064CL7T datasheet, W29GL064CL7T pinout, W29GL064CL7T application, or W29GL064CL7T equivalent, this page delivers verified package mapping (TSOP-48), sector protection behavior (top/bottom boot), erase/program cycle endurance (>100,000), deep power-down mode timing, and EVIO voltage scaling support - all confirmed from Winbond Revision H datasheet (Aug 2013).

Technical Context

The W29GL064CL7T implements a dual-mode address/data bus with DQ15/A-1 multiplexing and #BYTE-controlled byte/word selection. Its architecture includes 128 uniform 64 KB sectors or configurable top/bottom boot sectors (eight 8 KB + 126 × 64 KB), enabling flexible firmware partitioning. Sector protection uses both volatile (DPB) and non-volatile (IPB/Lock Register) mechanisms, with factory-lockable security sector.

Embedded operations are managed via command sequences with status detection using DQ5 (toggling bit) and DQ6 (data# polling). The device supports suspend/resume during program or erase, 16-word write buffer acceleration, and CFI query mode for runtime geometry detection - all compliant with JEDEC JESD68 standard.

Key Specifications

Pinout & Package

W29GL064CL7T is packaged in 48-pin TSOP (12 × 20 mm), pin-compatible with industry-standard parallel Flash footprints. Pin functions are validated per datasheet Figure 3-3-4 and Table 5-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S29GL064S90TFI010 and MX29GL640EHTI-90G, the W29GL064CL7T delivers faster 70 ns access, integrated write acceleration, and a dedicated secured silicon sector - making it optimal for new designs requiring field-upgradability, security binding, and deterministic boot performance.

Availability

W29GL064CL7T is available at Aetrix Electronics and suitable for industrial automation, networking infrastructure, and medical electronics requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for W29GL064CL7T 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 Flash, PSRAM, and audio codecs, serving industrial, communications, and consumer markets.

The W29GL064CL7T belongs to Winbond's W29GL series of high-reliability parallel NOR Flash memories, designed specifically for embedded firmware storage where deterministic timing, sector-level protection, and long data retention are critical.

FAQ

What is the correct power-up sequence for W29GL064CL7T?

The W29GL064CL7T requires VCC to stabilize within 2.7–3.6 V before applying signals to control pins. Per datasheet Section 8.6.1, #RESET must be held low for ≥100 µs after VCC reaches 2.7 V, then released to allow internal initialization. No external sequencing circuitry is required, but decoupling capacitors (0.1 µF ceramic + 4.7 µF tantalum) near VCC/VSS are mandatory per Section 7.2.23. This ensures reliable entry into read mode for W29GL064CL7T startup.

Does W29GL064CL7T support true 8-bit bus operation?

Yes, W29GL064CL7T supports native 8-bit operation via the #BYTE pin. When #BYTE = VIL, the device operates in byte mode: DQ0–DQ7 carry data, and DQ15 functions as address bit A-1. Address range expands to A21–A-1 (23 bits), enabling full 8 MB addressing. This is distinct from x16-only devices and is confirmed in Table 5-1 and Section 7.1. The W29GL064CL7T does not require external data bus multiplexing for 8-bit microcontrollers.

How is sector protection implemented on W29GL064CL7T?

W29GL064CL7T implements dual-layer sector protection: volatile Dynamic Protection Bits (DPB) cleared on power cycle, and non-volatile Individual Protection Bits (IPB) stored in Lock Register (Section 7.3). #WP/ACC pin provides hardware-level locking of top/bottom boot sectors. Protection status is verified via CFI query or direct read of sector lock registers (Table 7-11). All protection mechanisms apply independently to each sector and are fully documented for W29GL064CL7T in Revision H datasheet.

What is the function of the EVIO pin on W29GL064CL7T?

The EVIO pin on W29GL064CL7T sets input threshold voltage and output drive strength for all address, control, and DQ pins. When EVIO = 1.65–VCC, input logic levels scale accordingly (e.g., VIH = 0.7×EVIO), and output VOH/VOL adapt to match host interface voltage. This eliminates level shifters in mixed-voltage systems. EVIO is NC for top/bottom LFBGA64 configurations but required for TSOP-48 and TFBGA48 packages per Section 5 and Figure 3-3-4. EVIO directly affects W29GL064CL7T interoperability with 1.8 V or 3.3 V controllers.

Can W29GL064CL7T be used in deep power-down mode during system sleep?

Yes, W29GL064CL7T supports deep power-down mode with typical current draw of 1 µA (Section 8.5.6). Entry requires specific command sequence (0x9F) while #CE is low; exit is triggered by #CE high pulse ≥100 ns. In this mode, all internal circuitry halts except wake-up logic, and contents are retained. Recovery time is 100 µs max. This feature is validated for W29GL064CL7T in battery-powered or energy-harvesting applications where standby power is critical.