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STMicroelectronics M29W200BB55N1

Name: M29W200BB55N1
Brand: STMicroelectronics
SKU: M29W200BB55N1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: M29W200BB55N1

Manufacturer:: STMicroelectronics

Category:: Memory

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

Datasheet:: M29W200BB55N1.pdf

Description:: IC FLASH 2MBIT PARALLEL 48TSOP

Quantity:: RFQ Add To RFQ list

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Inventory:1,375

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Product details

Overview

M29W200BB55N1 from STMicroelectronics is a 2 Mbit (128Kb × 16 or 256Kb × 8) bottom-boot block flash memory with single 2.7–3.6 V supply operation, 55 ns access time, and embedded program/erase controller supporting block erase suspend/resume. It features 7 asymmetric blocks (16 KB boot + 2×8 KB parameter + 4 main), 100,000 program/erase cycles per block, and 20-year data retention - deployed in industrial microcontroller boot code storage and firmware update partitions.

For engineers reviewing the M29W200BB55N1 datasheet, M29W200BB55N1 pinout, M29W200BB55N1 application, or M29W200BB55N1 equivalent, key selection criteria include boot block location (bottom), BYTE-selectable x8/x16 organization, Ready/Busy open-drain signaling, ECOPACK® TSOP48 package compliance, and JEDEC-standard command set compatibility with legacy M29W200 series.

Technical Context

The M29W200BB implements an on-chip Program/Erase Controller that executes embedded byte/word programming and multi-block/chip erase algorithms without external timing control. Its command interface uses address-latched sequences (e.g., 555h/2AAh unlock followed by operation-specific codes) compliant with JEDEC JESD21-C standards.

Block architecture is asymmetric: bottom-boot configuration allocates 16 KB at 00000h–03FFFh (x8) / 00000h–01FFFh (x16), with two 8 KB parameter blocks and four main blocks up to 64 KB each. Erase suspend/resume enables concurrent read/program in non-erasing blocks while background erase proceeds.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	2 Mbit (128K × 16 or 256K × 8)
Supply Voltage	2.7–3.6 V single supply for read, program, and erase - eliminates need for dual-voltage rails
Access Time	55 ns max - supports high-speed microprocessor bus interfaces without wait states
Program Time	10 µs per byte/word typical - enables rapid field firmware patching
Endurance	100,000 program/erase cycles per block - suitable for frequent OTA update partitions
Data Retention	20 years at 125 °C - validated for automotive and industrial temperature-critical storage
Boot Block Location	Bottom (00000h–03FFFh x8) - ensures reset vector fetch from lowest address on power-up

Pinout & Package

Package: TSOP48 (12 × 20 mm), ECOPACK® lead-free, RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
A0–A16	Address Inputs	17-bit address bus supporting full 256K × 8 or 128K × 16 addressing; A16 used only in x8 mode
DQ0–DQ14	Data I/O (x16)	15-bit bidirectional data bus in 16-bit mode; DQ8–DQ14 inactive in x8 mode
DQ15A–1	Data I/O or Address LSB	Functions as DQ15 in x16 mode; acts as A–1 (LSB address bit) in x8 mode when BYTE = VIL
E	Chip Enable	Active-low chip select enabling read/write operations; disables all outputs when high
G	Output Enable	Active-low output enable controlling data bus tristate during read cycles
W	Write Enable	Active-low write strobe latching commands into internal state machine
RB	Ready/Busy Output	Open-drain status indicator: low during program/erase, high-impedance in read mode
BYTE	Bus Width Select	High = 16-bit mode (DQ0–DQ15 active); Low = 8-bit mode (DQ0–DQ7 + A–1)
RP	Reset / Temporary Unprotect	Pull low for hardware reset; apply VID to temporarily unprotect all blocks for bulk programming

Key Features

Feature	Design Value
Erase Suspend/Resume	Allows real-time read/program of non-erasing blocks during background erase - critical for fail-safe firmware updates
Unlock Bypass Mode	Reduces programming time by >50% in production environments via streamlined 2-cycle bypass program commands
Electronic Signature	Manufacturer Code 0020h and Device Code 0057h readable via dedicated bus sequence - enables automated board-level identification
Temporary Block Unprotection	RP pin driven to VID unlocks protected blocks without permanent configuration change - supports secure in-system reprogramming
Automatic Standby	Enters low-current ICC2 mode after 150 ns bus inactivity - reduces idle power in battery-backed systems

Applications

Industrial PLC Firmware Storage

Automotive ECU Boot Loader

Use Scenario: Storing boot loader and safety-critical initialization routines in programmable logic controllers operating across –40 to 85 °C.

IC Role / Device Role / Timing Role: Non-volatile boot memory mapped to CPU reset vector; provides deterministic 55 ns read access during cold start.

Use Value: Bottom-boot block alignment ensures immediate execution from lowest address; 20-year retention guarantees firmware integrity over equipment lifetime.

Use Scenario: Holding certified bootloader code in engine control units requiring ASIL-B compliance and field update capability.

IC Role / Device Role / Timing Role: Secure, block-protected flash storing signed boot image; RP pin enables controlled unprotection for OTA signature verification.

Use Value: Erase suspend allows concurrent diagnostic logging during firmware validation; 100K cycle endurance supports 10+ years of update cycles.

Medical Device Configuration Storage

Networking Equipment Parameter Table

Use Scenario: Retaining calibration coefficients and user-configurable therapy parameters in Class II medical infusion pumps.

IC Role / Device Role / Timing Role: Parameter block (8 KB × 2) stores write-protected clinical settings; BYTE pin enables flexible 8-bit microcontroller interface.

Use Value: Independent block protection prevents accidental overwrite during runtime; ECOPACK® packaging meets IEC 60601-1 material requirements.

Use Scenario: Hosting MAC address tables, VLAN configurations, and QoS policies in managed Ethernet switches with hot-swap capability.

IC Role / Device Role / Timing Role: Dual-parameter block architecture isolates volatile network configs from persistent firmware; RB pin synchronizes config writes with switch reset sequence.

Use Value: Unlock bypass programming accelerates factory provisioning of 1000+ unit batches; 2.7 V min supply supports brown-out tolerant operation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SST39VF200A-55-4C-NHE	55 ns access, 2 Mbit, top-boot configuration, no erase suspend	Lacks suspend/resume; requires full-block erase for partial updates	Select when boot block location is non-critical and cost sensitivity outweighs update flexibility
MX29LV200CBTI-55G	55 ns, 2 Mbit, bottom-boot, supports CFI query but no unlock bypass mode	CFI support simplifies driver development; lacks production acceleration feature	Prefer for Linux-based systems requiring standardized flash interrogation, not high-volume programming lines

Compared with SST39VF200A-55-4C-NHE and MX29LV200CBTI-55G, the M29W200BB55N1 uniquely combines bottom-boot layout, erase suspend, and unlock bypass - making it optimal for safety-critical embedded systems requiring both field update resilience and manufacturing efficiency.

Availability

M29W200BB55N1 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU boot loaders, and medical device configuration storage requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for M29W200BB55N1 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, and non-volatile memory solutions for industrial, automotive, and consumer markets.

The M29W200B series was designed specifically for embedded systems requiring reliable, low-voltage flash memory with flexible boot block architecture and robust in-system programmability - targeting applications where firmware integrity and update agility are mission-critical.

FAQ

What is the difference between M29W200BB and M29W200BT?

The M29W200BB has its 16 KB boot block located at the bottom of the memory map (00000h–03FFFh in x8 mode), while the M29W200BT places it at the top (3C000h–3FFFFh). This determines reset vector fetch behavior: BB loads startup code from lowest address, BT from highest. Both share identical electrical specs, command sets, and packaging options.

Does M29W200BB55N1 support 3.3 V-only operation?

Yes - the M29W200BB55N1 operates across 2.7 V to 3.6 V, fully compatible with standard 3.3 V logic systems. Its lockout voltage (VLKO) prevents unintended writes during power ramp-up/down, and ICC3 current draw during program/erase remains within 3.3 V rail capabilities when decoupled with ≥0.1 µF ceramic capacitor per VCC pin.

How is block protection managed without external hardware?

Block protection is controlled entirely through software commands: the Auto Select command reads protection status (00h = unprotected, 01h = protected), and dedicated unlock/lock sequences (e.g., 555h/2AAh/555h/80h/555h/AAh/555h/10h) enable or disable protection per block. RP pin application of VID provides temporary unprotection without altering lock bits.

Can M29W200BB55N1 be used in 8-bit microcontroller systems?

Yes - setting BYTE = VIL configures the device for 8-bit mode: DQ0–DQ7 become data lines, DQ15A–1 functions as A–1 (LSB), and A0–A16 provide full 17-bit addressing. Bus operations follow JEDEC-standard timing with tACC ≤ 55 ns, and all command sequences adapt automatically to the selected width without external glue logic.

M29W200BB55N1 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:: 55ns

Access Time:: 55 ns

Voltage - Supply:: 2.7V ~ 3.6V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSOP

M29W200BB55N1 FAQ

1.How can I place an order for M29W200BB55N1 through Aetrix?

Please submit a Request for Quotation (RFQ) for M29W200BB55N1 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 M29W200BB55N1 reliable?

The price and inventory of M29W200BB55N1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M29W200BB55N1 is usually 5 days.

3.What payment methods are accepted for M29W200BB55N1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M29W200BB55N1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M29W200BB55N1?

M29W200BB55N1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M29W200BB55N1 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 M29W200BB55N1?

For technical support, including M29W200BB55N1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M29W200BB55N1 requirements.

6.How does Aetrix verify that M29W200BB55N1 is sourced from the original manufacturer or authorized distributors?

All M29W200BB55N1 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 M29W200BB55N1 meets industry standards.

7.What is the process for return or replacement of M29W200BB55N1?

All M29W200BB55N1 units undergo pre-shipment inspection (PSI). If there is an issue with M29W200BB55N1, 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 M29W200BB55N1 part is unused and in its original packaging.

Return procedure for M29W200BB55N1:

1.Submit a request within 90 days.

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

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