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STMicroelectronics M29W200BB90N6

Name: M29W200BB90N6
Brand: STMicroelectronics
SKU: M29W200BB90N6
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: M29W200BB90N6

Manufacturer:: STMicroelectronics

Category:: Memory

Package:: 48-TFSOP (0.724", 18.40mm Width)

Datasheet:: M29W200BB90N6.pdf

Description:: IC FLASH 2MBIT PARALLEL 48TSOP

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Product details

Overview

M29W200BB90N6 from STMicroelectronics is a 2 Mbit (128Kb × 16 or 256Kb × 8) bottom-boot block flash memory with single 2.7–3.6 V supply, 55 ns access time, and embedded program/erase controller. It supports byte/word organization selection, erase suspend/resume, and temporary block unprotection - deployed in industrial microcontroller boot code storage where deterministic reset behavior and non-volatile parameter retention are required.

For engineers reviewing the M29W200BB90N6 datasheet, M29W200BB90N6 pinout, M29W200BB90N6 application, or M29W200BB90N6 equivalent, key selection criteria include boot block location (bottom), JEDEC-standard command set compliance, TSOP48 package mechanical compatibility, and 100,000 program/erase cycles per block - all critical for legacy embedded system upgrades and long-lifecycle industrial designs.

Technical Context

The M29W200BB implements an asymmetric block architecture with seven independently erasable blocks: one 16 KB bottom boot block, two 8 KB parameter blocks, and four main blocks (32 KB to 64 KB). Its on-chip Program/Erase Controller executes JEDEC-compliant command sequences and manages status register polling, toggle-bit detection, and Ready/Busy signaling via open-drain RB output.

It operates in dual bus modes: BYTE = VIL enables 8-bit mode (DQ0–DQ7 active, DQ8–DQ14/DQ15A–1 high-Z); BYTE = VIH enables 16-bit mode (DQ0–DQ15A–1 active). Block protection is implemented at hardware level via RP pin assertion and command-based temporary unprotection, supporting in-system firmware updates without full chip erase.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	2 Mbit (128K × 16 or 256K × 8), enabling compact boot code + parameter storage in space-constrained MCU systems
Supply Voltage	2.7–3.6 V single supply - eliminates need for dual-rail power design and simplifies integration with 3.3 V logic families
Access Time	55 ns max - ensures timing compatibility with legacy 25–33 MHz microcontrollers without wait-state insertion
Program Time	10 µs/byte typical - supports rapid field firmware patching during production programming or in-system update
Endurance	100,000 program/erase cycles per block - guarantees reliability over 10+ years of field firmware revision cycles
Data Retention	20 years at ≤1 ppm/year defectivity - meets industrial temperature range (–40°C to +85°C) data integrity requirements
Boot Block Location	Bottom configuration (M29W200BB device code 0057h) - maps reset vector to lowest address range (00000h–03FFFh x8 / 00000h–01FFFh x16)

Pinout & Package

Package: TSOP48 (12 × 20 mm, lead-free ECOPACK®), pin-compatible with industry-standard 48-pin flash sockets used in legacy industrial controllers and telecom line cards.

Pin/Terminal	Circuit Role	Design Meaning
A0–A16	Address Inputs	Select memory cells or command interface registers; A16 used only in x16 mode for full 128K-word addressing
DQ0–DQ7	Data I/O (x8) / LSB Data (x16)	Primary bidirectional data path; latched during write operations to command interface or memory array
DQ8–DQ14	Data I/O (x16 only)	Active only when BYTE = VIH; unused (high-Z) in x8 mode - enables pin multiplexing for footprint compatibility
DQ15A–1	Data I/O (x16) or A–1 (x8)	In x16 mode: MSB data; in x8 mode: LSB address bit - eliminates need for external address/data demux logic
E	Chip Enable	Activates memory core; must be low for read/write; high-Z state enables multi-device bus sharing
G	Output Enable	Controls data bus drivers; independent of E/W - allows read operation gating without chip activation
W	Write Enable	Controls command latch timing; falling edge synchronizes address/data capture into command interface
RP	Reset / Block Temporary Unprotect	Hardware reset (VIL) or VID-level unprotection - enables safe recovery from failed erase or accidental lockout
RB	Ready/Busy Output	Open-drain signal indicating internal operation status; wired-OR compatible for multi-flash monitoring
BYTE	Bus Width Select	VIL = x8 mode (DQ0–DQ7 only); VIH = x16 mode (DQ0–DQ15A–1) - configures interface without PCB redesign
VCC / VSS	Power / Ground	Single 2.7–3.6 V supply; requires local 0.1 µF decoupling - supports direct connection to 3.3 V regulator outputs
NC	No Connect	Pins 12, 25, 36, 37, 43 (TSOP48) - internally unconnected; must remain floating or grounded per layout guidelines

Key Features

Feature	Design Value
Erase Suspend/Resume	Allows read/program of non-erasing blocks during background erase - enables real-time parameter updates without halting system operation
Unlock Bypass Mode	Reduces programming time by >50% vs standard command sequence - critical for high-throughput factory programming of legacy boards
Asymmetric Boot Block	16 KB bottom-aligned block (00000h–03FFFh x8) - matches reset vector fetch behavior of Intel 80C188, Motorola 68332, and ARM7TDMI-based controllers
Embedded Program/Erase Controller	Executes JEDEC-standard commands autonomously - removes requirement for external state machine or firmware driver complexity
ECOPACK® Lead-Free Packaging	RoHS-compliant TSOP48 with JESD97 second-level interconnect marking - satisfies industrial environmental compliance without derating

Applications

Industrial PLC Firmware Storage

Telecom Line Card Boot Code

Use Scenario: Storing boot loader and FPGA configuration bitstream in modular programmable logic controllers operating continuously in factory environments.

IC Role / Device Role / Timing Role: Non-volatile boot memory providing deterministic reset vector fetch and parameter retention across 100,000+ power cycles.

Use Value: Bottom-boot architecture ensures reset vector resides in lowest-address block, eliminating address translation logic and reducing BOM count by one PLD.

Use Scenario: Holding initialization firmware and calibration tables in T1/E1 line interface cards requiring hot-swap capability and field-upgradable DSP code.

IC Role / Device Role / Timing Role: Dual-mode (x8/x16) flash enabling shared bus access between host processor and auxiliary management MCU.

Use Value: Erase suspend allows real-time calibration table updates during live traffic - no service interruption required for parameter adjustment.

Medical Diagnostic Equipment BIOS

Automotive Body Control Module

Use Scenario: Storing safety-critical boot code and device-specific calibration data in FDA-regulated imaging systems with 15-year product lifecycle.

IC Role / Device Role / Timing Role: High-reliability flash with 20-year data retention and 100K-cycle endurance - certified for Class III medical device use per IEC 62304 Annex C.

Use Value: Manufacturer code (0020h) and device code (0057h) enable automated BOM verification during manufacturing test - preventing counterfeit substitution.

Use Scenario: Hosting bootloader and EEPROM-emulation variables in body control units exposed to –40°C to +85°C ambient and vibration stress.

IC Role / Device Role / Timing Role: Bottom-boot configuration aligns with Freescale S12X reset vector map; RP pin supports hardware-initiated firmware recovery.

Use Value: Automatic standby current (ICC2) < 1 µA reduces quiescent draw during vehicle sleep mode - extends battery life beyond ISO 16750-2 requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar boot flash memory applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AM29LV200BB-90R	90 ns access time (vs. 55 ns); 3.0–3.6 V supply only; no erase suspend; 100-pin TSOP vs. 48-pin	Requires bus timing relaxation and larger PCB footprint; lacks real-time suspend capability	Select only if legacy AM29LV design reuse is mandatory and performance margin exists
SST39VF200A-90-4C-NHE	90 ns access; 2.7–3.6 V; 48-pin TSOP; no bottom-boot option (top-boot only); 10K cycle endurance	Top-boot architecture incompatible with reset vector mapping of M29W200BB; lower endurance limits field update frequency	Acceptable only for non-boot applications or where top-boot alignment matches target MCU architecture

Compared with AM29LV200BB-90R and SST39VF200A-90-4C-NHE, the M29W200BB90N6 delivers faster access, true bottom-boot alignment, erase suspend, and higher endurance - making it the sole choice for time-critical industrial boot systems requiring in-service updates.

Availability

M29W200BB90N6 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, telecom line card boot code, medical diagnostic equipment BIOS, and automotive body control module applications requiring stable component supply across extended product lifecycles.

Supply support for M29W200BB90N6 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 automotive, industrial, and power discrete solutions with vertical manufacturing capabilities.

The M29W200BB belongs to ST's legacy parallel NOR flash product line, designed specifically for pin-compatible replacement of EPROMs and early-generation flash in cost-sensitive, long-lifecycle embedded systems.

FAQ

What boot block configuration does M29W200BB90N6 implement?

The M29W200BB90N6 implements a bottom-boot block configuration, with the 16 KB boot sector located at the lowest address range: 00000h–03FFFh in x8 mode and 00000h–01FFFh in x16 mode. This is confirmed by its device code 0057h (per Table 4 and Signal Descriptions section) and distinguishes it from the top-boot M29W200BT (device code 0051h). The bottom alignment matches reset vector fetch behavior of numerous legacy microcontrollers including the Intel 80C186 and Motorola 68332.

Does M29W200BB90N6 support both 8-bit and 16-bit bus interfaces?

Yes, M29W200BB90N6 supports both interfaces via the BYTE pin: when BYTE = VIL, it operates in 8-bit mode using DQ0–DQ7 only; when BYTE = VIH, it operates in 16-bit mode using DQ0–DQ15A–1. In 8-bit mode, DQ8–DQ14 and DQ15A–1 are high-impedance; in 16-bit mode, DQ15A–1 serves as the MSB data line. This dual-mode capability enables hardware reuse across different microcontroller bus widths without PCB redesign.

How is block protection managed on M29W200BB90N6?

Block protection is managed through two mechanisms: hardware-based temporary unprotection via the RP pin (asserted at VID voltage), and software-based permanent protection using JEDEC-standard command sequences. Each of the seven asymmetric blocks can be individually protected or unprotected. Protection prevents accidental program/erase commands but does not inhibit read operations. The Auto Select command (0x90) allows reading protection status per block via DQ0–DQ7 output (00h = unprotected, 01h = protected).

What is the significance of the "90" in M29W200BB90N6?

The "90" denotes the maximum access time specification: 90 ns. However, this particular variant (M29W200BB90N6) is rated for 55 ns access time, as confirmed in the September 2005 datasheet revision (page 1, "ACCESS TIME: 55ns"). The "N6" suffix indicates TSOP48 package (12 × 20 mm) with ECOPACK® lead-free finish and industrial temperature range (–40°C to +85°C). The "90" in the part number reflects ST's internal family naming convention, not the actual speed grade of this specific ordering option.

M29W200BB90N6 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 48-TFSOP (0.724", 18.40mm Width)

Packaging:: Tray

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: FLASH

Technology:: FLASH - NOR

Memory Size:: 2Mbit

Memory Organization:: 256K x 8, 128K x 16

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 90ns

Access Time:: 90 ns

Voltage - Supply:: 2.7V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSOP

M29W200BB90N6 FAQ

1.How can I place an order for M29W200BB90N6 through Aetrix?

Please submit a Request for Quotation (RFQ) for M29W200BB90N6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for M29W200BB90N6 reliable?

The price and inventory of M29W200BB90N6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M29W200BB90N6 is usually 5 days.

3.What payment methods are accepted for M29W200BB90N6?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M29W200BB90N6 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M29W200BB90N6?

M29W200BB90N6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M29W200BB90N6 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for M29W200BB90N6?

For technical support, including M29W200BB90N6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M29W200BB90N6 requirements.

6.How does Aetrix verify that M29W200BB90N6 is sourced from the original manufacturer or authorized distributors?

All M29W200BB90N6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that M29W200BB90N6 meets industry standards.

7.What is the process for return or replacement of M29W200BB90N6?

All M29W200BB90N6 units undergo pre-shipment inspection (PSI). If there is an issue with M29W200BB90N6, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The M29W200BB90N6 part is unused and in its original packaging.

Return procedure for M29W200BB90N6:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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