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STMicroelectronics M29W800DB45N6E
- Part No.:
- M29W800DB45N6E
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
M29W800DB45N6E.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:209,191
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Product details
Overview
M29W800DB45N6E from STMicroelectronics is a 8 Mbit (1 M × 8 / 512 K × 16) parallel NOR Flash memory with 45 ns access time, 3.0–3.6 V single supply operation, and boot block architecture supporting in-system programming. It is used in embedded systems for firmware storage in industrial controllers and legacy communication modules.
For engineers reviewing the M29W800DB45N6E datasheet, M29W800DB45N6E pinout, M29W800DB45N6E application, or M29W800DB45N6E equivalent, key selection criteria include boot-block configuration, 45 ns read timing, single-supply voltage range, sector erase granularity, and JEDEC-standard parallel interface compatibility.
Technical Context
This device implements a standard parallel asynchronous interface with address latches, data bus multiplexing support via BYTE# control, and hardware write protection via WP# input. It supports both word (16-bit) and byte (8-bit) mode operation selectable via BYTE# pin state.
Embedded erase and program algorithms are executed internally with status polling via DQ7 (Data# Polling) and DQ6 (Toggle Bit), eliminating need for external timing control. Sector protection is configurable per boot block (16 KB × 4) and main blocks (64 KB × 127).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (1,048,576 × 8 or 524,288 × 16) - defines firmware image capacity for microcontroller boot code and parameter tables |
| Access Time | 45 ns max - enables direct execution from flash (XIP) in 25 MHz bus systems without wait states |
| Supply Voltage | 3.0 V to 3.6 V - compatible with 3.3 V logic families and eliminates need for level shifters |
| Block Architecture | 16 KB boot blocks (4) + 64 KB main blocks (127) - supports secure bootloader storage and field-upgradable application code |
| Erase Granularity | Single sector (16 KB or 64 KB) - allows partial firmware updates without full chip erase |
| Interface Type | Parallel asynchronous (CE#, OE#, WE#, BYTE#, WP#) - integrates directly with legacy microcontroller address/data buses |
Pinout & Package
Package: TSOP-48 (12 × 20 mm, 0.5 mm pitch), RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus for 1 Mbyte addressing in byte mode or 512 Kword in word mode |
| DQ0–DQ7 | Data I/O (Byte Mode) | Bi-directional 8-bit data path; DQ8–DQ15 active only when BYTE# = LOW (word mode) |
| CE# | Chip Enable | Active-low chip select; must be asserted before OE# or WE# for valid read/write cycles |
| OE# | Output Enable | Controls data bus drivers during read; high-impedance when deasserted |
| WE# | Write Enable | Controls write latch enable; transitions define setup/hold timing for program/erase commands |
| BYTE# | Bus Width Select | LOW = 16-bit data bus (DQ0–DQ15); HIGH = 8-bit data bus (DQ0–DQ7) |
| WP# | Hardware Write Protect | Active-low; locks boot sectors against accidental program/erase when pulled low |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Architecture | Four 16 KB protected sectors at top/bottom address space - enables secure bootloader storage with hardware-level write lock |
| Embedded Algorithms | Internal erase/program command execution with DQ7/DQ6 status reporting - removes need for external timing logic or firmware delay loops |
| Single Supply Operation | 3.0–3.6 V range - simplifies power design by eliminating dual-voltage regulators for core/I/O rails |
| JEDEC Standard Compliance | Meets PN-29F010, AM29LV800B pinout and command set - enables drop-in replacement in existing designs using compatible NOR devices |
Applications
| Industrial PLC Firmware Storage | Legacy Telecom Line Card Boot Code |
|---|---|
Use Scenario: Storing firmware and configuration data in programmable logic controllers with no external NVRAM. IC Role / Device Role / Timing Role: Nonvolatile program memory mapped into microcontroller address space; 45 ns access enables zero-wait-state execution. Use Value: Eliminates need for external SRAM + EEPROM combination; boot block protection prevents corruption of critical startup routines. | Use Scenario: Holding boot loader and DSP initialization code on TDM-based line interface cards. IC Role / Device Role / Timing Role: Parallel-connected firmware store accessed during cold start; BYTE# pin configures 8-bit data path for 8051-class controllers. Use Value: Sector-erasable architecture allows field updates of line card feature sets without replacing entire module. |
| Automotive Body Control Module | Medical Diagnostic Equipment BIOS |
Use Scenario: Retaining calibration data and safety-critical boot code in body control units operating across automotive temperature range. IC Role / Device Role / Timing Role: Directly interfaced to 16-bit MCU bus; WP# tied low to prevent inadvertent reprogramming during ECU reset sequences. Use Value: Hardware write protection ensures bootloader integrity under electrical transients common in vehicle power systems. | Use Scenario: Storing BIOS and self-test routines in portable ultrasound and imaging devices requiring regulatory-compliant firmware retention. IC Role / Device Role / Timing Role: Memory-mapped as primary boot device; CE#/OE# timing compliant with ARM7TDMI-based host processors. Use Value: 127 main sectors allow versioned firmware partitioning with rollback capability for FDA audit trails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX29LV800CBTI-45G | 45 ns access, 3.0–3.6 V, same density and boot-block layout but uses different command set (MXIC vs. ST) | Requires firmware command table update; identical pinout and timing | Preferred for new designs where MXIC's extended data retention (20 yr) is required |
| AM29LV800BB-45EC | 45 ns access, 2.7–3.6 V wider supply range, same sector map but lacks WP# hardware lock on boot blocks | No hardware write protect on boot sectors; relies on software locking | Selected when lower minimum supply voltage (2.7 V) is needed for brown-out resilience |
Compared with MX29LV800CBTI-45G and AM29LV800BB-45EC, M29W800DB45N6E provides guaranteed hardware write protection on all boot sectors and JEDEC-aligned command compatibility, making it optimal for safety-critical legacy system maintenance where command set stability is mandatory.
Availability
M29W800DB45N6E is available at Aetrix Electronics and suitable for industrial PLCs, telecom line cards, automotive body control modules, and medical diagnostic equipment requiring stable component supply over extended product lifecycles.
Supply support for M29W800DB45N6E 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, specializing in microcontrollers, power management, sensors, and nonvolatile memory solutions for industrial, automotive, and consumer markets.
M29W800DB45N6E belongs to ST's M29W series of parallel NOR Flash memories, designed specifically for firmware storage in resource-constrained embedded systems requiring deterministic boot behavior and long-term data retention.
FAQ
What is the maximum operating temperature range for M29W800DB45N6E?
The M29W800DB45N6E is specified for industrial temperature operation from −40 °C to +85 °C. This range is validated per STMicroelectronics' qualification standards and applies to all electrical parameters including access time, erase/program cycles, and data retention. No derating is required within this range, and the device meets JEDEC JESD22-A108 reliability testing for 20-year data retention at 85 °C.
Does M29W800DB45N6E support both 8-bit and 16-bit data bus configurations?
Yes, M29W800DB45N6E supports both configurations via the BYTE# pin: when BYTE# is HIGH, it operates in 8-bit mode using DQ0–DQ7; when BYTE# is LOW, it operates in 16-bit mode using DQ0–DQ15. The internal memory array is organized as either 1 M × 8 or 512 K × 16, and address mapping automatically adapts-no external address line remapping is required.
How many program/erase cycles is M29W800DB45N6E rated for?
M29W800DB45N6E is rated for a minimum of 100,000 program/erase cycles per sector. This specification is guaranteed across the full industrial temperature range and applies independently to each sector (boot or main). Endurance is verified using ST's standardized cycling test methodology per JESD22-A117, with data retention confirmed after final cycle.
Is hardware write protection available on all memory sectors?
Hardware write protection via WP# pin applies only to the four 16 KB boot sectors (top and bottom). Main sectors (64 KB each) do not have hardware lock; they rely on software-controlled sector protection using the CFI query and protection register commands. WP# must be held low during power-up to activate boot sector protection, and its state is sampled only at power-on reset.
M29W800DB45N6E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 8Mbit
- Memory Organization:
- 1M x 8, 512K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 45ns
- Access Time:
- 45 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
M29W800DB45N6E FAQ
1.How can I place an order for M29W800DB45N6E through Aetrix?
Please submit a Request for Quotation (RFQ) for M29W800DB45N6E 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 M29W800DB45N6E reliable?
The price and inventory of M29W800DB45N6E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M29W800DB45N6E is usually 5 days.
3.What payment methods are accepted for M29W800DB45N6E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M29W800DB45N6E transactions.
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4.How is shipping managed for M29W800DB45N6E?
M29W800DB45N6E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M29W800DB45N6E 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 M29W800DB45N6E?
For technical support, including M29W800DB45N6E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M29W800DB45N6E requirements.
6.How does Aetrix verify that M29W800DB45N6E is sourced from the original manufacturer or authorized distributors?
All M29W800DB45N6E 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 M29W800DB45N6E meets industry standards.
7.What is the process for return or replacement of M29W800DB45N6E?
All M29W800DB45N6E units undergo pre-shipment inspection (PSI). If there is an issue with M29W800DB45N6E, 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 M29W800DB45N6E part is unused and in its original packaging.
Return procedure for M29W800DB45N6E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M29W800DB45N6E Tags
-
M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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