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Microchip Technology AT49BV001AN-55VU
- Part No.:
- AT49BV001AN-55VU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT49BV001AN-55VU.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,549
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Product details
Overview
AT49BV001AN-55VU from Atmel is a 1 Mbit (128K × 8) single-supply 2.7–3.6 V in-system reprogrammable Flash memory IC with 55 ns read access time, 30 µs typical byte programming, and sector-erasable architecture including one 16 KB boot block with hardware lockout. It operates across the industrial temperature range (−40°C to +85°C) and targets embedded firmware storage in microcontroller-based systems requiring field-upgradable code.
For engineers reviewing the AT49BV001AN-55VU datasheet, AT49BV001AN-55VU pinout, AT49BV001AN-55VU application, or AT49BV001AN-55VU equivalent, key selection criteria include its 55 ns read timing, boot-block write protection capability, TSOP/VSOP-compatible 32-pin package, and compatibility with standard 5 V–compatible command sets despite 2.7–3.6 V operation.
Technical Context
The AT49BV001AN-55VU implements a CMOS-based NOR Flash architecture with internal program control logic and autonomous erase timing. Its sector organization comprises one 16 KB boot block (address 1C000H–1FFFFH), two 8 KB parameter blocks, and two main memory blocks (32 KB and 64 KB), all erasable independently via six-cycle software commands.
It supports standard EPROM-like read interface (CE/OE/WE control), DATA polling (I/O7 complement detection) and toggle-bit (I/O6) methods for program/erase completion detection, and hardware data protection via VCC sense, noise filtering on WE/CE, and control-line inhibit logic - all without requiring external high-voltage programming signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (128K × 8), sufficient for compact bootloader and configuration storage |
| Read Access Time | 55 ns - enables direct execution from flash in timing-critical MCU applications |
| Byte Programming Time | 30 µs typical - supports fast field updates of small firmware patches |
| Erase Cycle Time | 3 seconds max - allows rapid sector reconfiguration without system downtime |
| Supply Voltage Range | 2.7 V to 3.6 V - compatible with single-cell Li-ion and regulated 3.3 V rails |
| Active / Standby Current | 15 mA / 50 µA - low power consumption suitable for battery-backed systems |
| Endurance | 10,000 program/erase cycles - validated for frequent firmware revision in industrial controllers |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded deployment |
Pinout & Package
AT49BV001AN-55VU uses a 32-lead Very Small Outline Package (VSOP, 8 × 14 mm, package code 32V), RoHS-compliant and halide-free. Pin 9 is no-connect (NC) per datasheet specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A11 is don't-care in command cycles |
| I/O0–I/O7 | Data Input/Output | 8-bit bidirectional data bus; I/O7 used for DATA polling, I/O6 for toggle-bit status |
| CE | Chip Enable | Active-low chip select; must be low for read/write; high forces high-impedance outputs |
| OE | Output Enable | Active-low output gate; controls data assertion during read; high disables outputs |
| WE | Write Enable | Active-low write strobe; latches address/data during command and programming cycles |
| VCC | Power Supply | 2.7–3.6 V core supply; internal regulation ensures stable operation across voltage range |
| GND | Ground | Reference return path for all I/O and internal logic; decoupling required per layout guidelines |
| NC (Pin 9) | No Connect | Unbonded terminal in VSOP package; must remain unconnected per design specification |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16 KB protected region (1C000H–1FFFFH) permanently secured after enable command; prevents accidental overwrite of bootloader code |
| Sector-Erasable Architecture | Independent erase of two 8 KB parameter blocks and two main memory blocks (32 KB/64 KB); enables selective firmware updates without full chip erase |
| DATA Polling & Toggle Bit | Real-time program/erase completion detection via I/O7 complement or I/O6 toggling - eliminates need for fixed delay timers in host firmware |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), OE/CE/WE inhibit logic, and 15 ns noise filter on WE/CE - prevents spurious writes in electrically noisy environments |
| Green Packaging | Pb/halide-free VSOP package (32V) compliant with RoHS Directive 2011/65/EU and JEDEC MO-142 BA |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
|
Use Scenario: Storing upgradeable firmware and calibration tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with in-system reprogrammability; provides deterministic 55 ns read latency for real-time instruction fetch. Use Value: Enables remote firmware patching without hardware replacement; boot block lockout ensures bootloader integrity during field updates. |
Use Scenario: Holding certified bootloader and safety-critical initialization routines in portable diagnostic equipment requiring regulatory compliance. IC Role / Device Role / Timing Role: Secure, tamper-resistant firmware storage; 10,000-cycle endurance supports long product lifecycle with periodic validation updates. Use Value: Prevents unauthorized modification via hardware lockout; green packaging meets medical device environmental material requirements. |
| Automotive Body Control Module | Networking Equipment Configuration |
|
Use Scenario: Storing vehicle-specific configuration parameters and minor firmware revisions in body control units operating across extended temperature ranges. IC Role / Device Role / Timing Role: Low-power (50 µA standby) nonvolatile memory interfaced directly to 3.3 V microcontrollers; supports −40°C to +85°C operation. Use Value: Reduces system power budget during sleep modes; sector erase allows updating lighting or door module settings without disrupting core logic. |
Use Scenario: Retaining vendor-locked configuration profiles and MAC address tables in managed switches and wireless access points. IC Role / Device Role / Timing Role: Parameter block storage (two 8 KB sections) for persistent settings; accessed via standard CE/OE/WE protocol compatible with legacy controller designs. Use Value: Eliminates need for external EEPROM; parameter blocks can be updated independently while main firmware remains active. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF010-55-4C-NHE | Same density (1 Mbit), 55 ns access, but uses 3.0–3.6 V supply; lacks boot block lockout and has slower 90 µs byte programming | Acceptable for non-security-critical firmware storage where boot protection is not required | Select when cost sensitivity outweighs need for secure bootloader isolation |
| MX29LV010TC-55G | 1 Mbit, 55 ns, 2.7–3.6 V, but features uniform 64 KB sectors (no dedicated boot block); requires external lock mechanism | Suitable for general-purpose code storage where sector granularity matches update patterns | Prefer when application firmware is fully relocatable and does not require hard-coded boot region protection |
Compared with SST39VF010-55-4C-NHE and MX29LV010TC-55G, the AT49BV001AN-55VU uniquely delivers factory-configurable boot block lockout, faster 30 µs programming, and native support for parameter-block updates - making it optimal for systems demanding both security and field-serviceability.
Availability
AT49BV001AN-55VU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader memory, automotive body control modules, networking equipment configuration, and embedded system code storage requiring stable component supply and long-term lifecycle support.
Supply support for AT49BV001AN-55VU 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
Atmel Corporation (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and secure authentication devices.
The AT49BV001A(N)(T) series was designed as a drop-in upgrade path for EPROM-based systems, delivering in-system reprogrammability at 2.7–3.6 V while maintaining pin- and command-level compatibility with legacy 5 V interfaces.
FAQ
What is the function of Pin 9 on the AT49BV001AN-55VU?
Pin 9 on the AT49BV001AN-55VU is designated as NC (No Connect) per the official Atmel datasheet (3364D–FLASH–3/05). It is an unconnected terminal in the 32-lead VSOP package and must remain floating-no external connection or pull-up/pull-down is permitted. This differs from the PLCC variant where Pin 1 is NC.
Does the AT49BV001AN-55VU support boot block reprogramming after lockout is enabled?
Yes - the AT49BV001AN-55VU supports boot block reprogramming after lockout activation, but only by applying 12.0 V ± 0.5 V to the RESET pin during the entire erase or programming operation. This override feature is explicitly documented in Section 4.6.2 of the datasheet and is available on the AT49BV001AN-55VU variant.
What is the exact memory organization of the AT49BV001AN-55VU?
The AT49BV001AN-55VU organizes its 1 Mbit as 131,072 words × 8 bits (128K × 8). Its sector map includes: one 16 KB boot block (1C000H–1FFFFH), two 8 KB parameter blocks (1A000H–1BFFFH and 18000H–19FFFH), one 32 KB main memory block (10000H–17FFFH), and one 64 KB main memory block (00000H–0FFFFH).
How is program completion detected on the AT49BV001AN-55VU?
The AT49BV001AN-55VU supports two hardware-assisted program completion detection methods: DATA polling (reading the programmed byte yields complemented data on I/O7 until completion) and toggle-bit detection (I/O6 toggles between 0 and 1 during programming and stabilizes upon completion). Both methods eliminate reliance on fixed timeout delays.
Is the AT49BV001AN-55VU compatible with 5 V microcontrollers?
Yes - the AT49BV001AN-55VU accepts 5 V–level command inputs (VIH = 2.0 V min, VIL = 0.6 V max) and uses standard 5 V–compatible command sequences (e.g., 555H/AAH), enabling direct interface with 5 V microcontrollers while operating from a 2.7–3.6 V VCC supply. No level-shifting circuitry is required for control signals.
AT49BV001AN-55VU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.488", 12.40mm Width)
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 50µs
- Access Time:
- 55 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VSOP
AT49BV001AN-55VU FAQ
1.How can I place an order for AT49BV001AN-55VU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV001AN-55VU 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 AT49BV001AN-55VU reliable?
The price and inventory of AT49BV001AN-55VU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV001AN-55VU is usually 5 days.
3.What payment methods are accepted for AT49BV001AN-55VU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV001AN-55VU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV001AN-55VU?
AT49BV001AN-55VU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV001AN-55VU 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 AT49BV001AN-55VU?
For technical support, including AT49BV001AN-55VU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV001AN-55VU requirements.
6.How does Aetrix verify that AT49BV001AN-55VU is sourced from the original manufacturer or authorized distributors?
All AT49BV001AN-55VU 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 AT49BV001AN-55VU meets industry standards.
7.What is the process for return or replacement of AT49BV001AN-55VU?
All AT49BV001AN-55VU units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV001AN-55VU, 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 AT49BV001AN-55VU part is unused and in its original packaging.
Return procedure for AT49BV001AN-55VU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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