STMicroelectronics NAND512W3A2BZA6E

Overview

NAND512W3A2BZA6E from STMicroelectronics is a 512 Mbit (64 MB) x8 NAND Flash memory with 1.8V supply, 528-byte page size (512 data + 16 spare), 16 KB block size (16K + 512 spare), and VFBGA55 (8 × 10 mm, 0.8 mm pitch) package. It supports automatic Page 0 read at power-up for boot code loading and features hardware write protection via WP pin.

For engineers reviewing the NAND512W3A2BZA6E datasheet, NAND512W3A2BZA6E pinout, NAND512W3A2BZA6E application, or NAND512W3A2BZA6E equivalent, key selection criteria include page/block architecture compatibility, 1.8V I/O tolerance, Ready/Busy open-drain timing, Copy Back program support, and VFBGA55 mechanical footprint alignment with host controller NAND interface routing.

Technical Context

This device implements a standard NAND interface with multiplexed I/O[7:0] for address/data/command transfer, AL/CL control signals for latch timing, and E/R/W/RE/WE logic for command execution. Its internal P/E/R controller manages erase suspend/resume, status register polling (SR0–SR7), and electronic signature verification (0x00EC).

The memory array is organized as 4,096 blocks × 32 pages × 528 bytes, supporting random access (12 µs max), sequential read (50 ns min), page program (200 µs typ), and block erase (2 ms typ). Bad block management relies on factory-marked defective blocks in the first and last pages of each block, flagged via non-FFh values in spare area byte 0.

Key Specifications

Pinout & Package

VFBGA55 (8 × 10 mm, 0.8 mm pitch, 6×8 active ball array) package with 55-ball layout. Ball pitch and pad dimensions comply with JEDEC MO-241AC standard.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NAND Flash memory applications.

Compared with MT29F4G08ABAEAH4-IT:E and TC58NVG2S3ETA00, NAND512W3A2BZA6E offers optimal balance of proven 512 Mbit density, compact 16 KB blocks for efficient wear leveling, and built-in boot capability-making it ideal for resource-constrained embedded designs requiring field-deployable firmware updates.

Availability

NAND512W3A2BZA6E is available at Aetrix Electronics and suitable for mobile handset storage, industrial HMI data logging, and set-top box firmware requiring stable component supply across multi-year production cycles.

Supply support for NAND512W3A2BZA6E 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in microcontrollers, power management, sensors, and non-volatile memory solutions for industrial, automotive, and consumer markets.

This part belongs to ST's NAND128-A/NAND256-A/NAND512-A/NAND01G-A family - designed specifically for cost-sensitive, high-volume embedded storage applications requiring boot-from-NAND capability, hardware write protection, and long-term data integrity in constrained environments.

FAQ

Does NAND512W3A2BZA6E support true 1.8V I/O signaling, or does it require level shifters with 3.3V controllers?

It supports true 1.8V I/O signaling: all inputs (AL, CL, E, R, W, WP) are 1.8V-tolerant with VIH = 0.7 × VDD and VIL = 0.3 × VDD, and outputs (I/O[7:0], RB) swing rail-to-rail within 1.8V. No level shifter is needed when interfacing with 1.8V microcontrollers or ASICs; however, direct connection to 3.3V controllers requires bidirectional level translation per JEDEC JESD8-12A.

What is the function of the "spare area" in each 528-byte page, and how is it used in practice?

The 16-byte spare area stores ECC parity bytes, logical-to-physical block mapping metadata, wear-leveling counters, and bad block markers. In production firmware, it is written alongside main data during page program and validated during read; factory-bad blocks are marked by non-0xFFh values in spare byte 0, while runtime bad blocks use spare byte 5.

Can the Copy Back Program mode be used across different blocks, or is it restricted to the same block?

Copy Back Program is restricted to pages within the same block: source and destination pages must reside in identical block numbers. This limitation ensures no inter-block timing violations occur during internal data transfer; cross-block copying requires full read-then-write via host controller and external buffer.

How does the "Chip Enable 'Don't Care' option" simplify hardware design, and is it enabled by default?

The option allows AL/CL/W/R signals to be asserted without asserting E, reducing GPIO count and eliminating timing-critical E setup/hold windows. It is enabled by programming bit 0 of the Configuration Register during initial setup; once set, E may be tied permanently low or omitted entirely in new designs.