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Microchip Technology AT49BV001ANT-55TU
- Part No.:
- AT49BV001ANT-55TU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV001ANT-55TU.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,667
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Product details
Overview
AT49BV001ANT-55TU from Microchip Technology (formerly Atmel) is a 1 Mbit (128K × 8) single-supply, in-system reprogrammable Flash memory IC designed for embedded boot code storage and parameter retention. It operates from 2.7V to 3.6V, delivers 55 ns read access time, supports byte-by-byte programming at 30 µs/byte, and features hardware data protection with 10,000 write/erase cycles - deployed in industrial control firmware updates and secure bootloader applications.
For engineers reviewing the AT49BV001ANT-55TU datasheet, AT49BV001ANT-55TU pinout, AT49BV001ANT-55TU application, or AT49BV001ANT-55TU equivalent, key selection criteria include its 32-pin TSOP package, boot block lockout capability (16 KB at 1C000H–1FFFFH), sector-erasable architecture (two 8 KB parameter blocks + two main memory blocks), and compatibility with standard microprocessor bus timing (CE/OE/WE control).
Technical Context
The AT49BV001ANT-55TU implements a CMOS-based NOR Flash architecture with internal program control logic and autonomous erase timing. Its command-set-driven operation uses six-cycle sequences for chip/sector erase and four-cycle sequences for byte programming, all executed without external high-voltage inputs.
It integrates DATA polling (I/O7 complement detection) and toggle-bit (I/O6 toggling) methods for cycle completion monitoring, and includes VCC sense, noise filtering, and CE/OE/WE inhibit logic for hardware data protection. The RESET pin is not functional on this variant (AT49BV001AN(T)), distinguishing it from non-N versions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8 bits) - sufficient for full bootloader + configuration parameters in space-constrained embedded systems. |
| Read Access Time | 55 ns - enables direct execution from flash (XIP) in real-time microcontroller applications without wait states. |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic domains and battery-backed industrial systems. |
| Byte Programming Time | 30 µs typical - allows rapid field updates of small firmware patches or calibration data. |
| Erase Cycle Time | 3 seconds max - supports fast reconfiguration during manufacturing test or field service. |
| Endurance | 10,000 write/erase cycles - ensures multi-year reliability in devices requiring periodic firmware upgrades. |
| Standby Current | 50 µA CMOS - minimizes power draw in always-on edge nodes and low-power IoT gateways. |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade deployment in motor drives, PLCs, and telecom infrastructure. |
Pinout & Package
AT49BV001ANT-55TU is housed in a 32-lead Thin Small Outline Package (TSOP, Type 1, 8 × 20 mm), 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. |
| CE | Chip Enable | Active-low enable controlling device selection; must be low with OE low for valid read access. |
| OE | Output Enable | Active-low output gate; used with CE to prevent bus contention during shared-memory access. |
| WE | Write Enable | Active-low control for programming/erase command latching; rising edge triggers data/address capture. |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel interface for read data output and program data input; supports DATA polling on I/O7 and toggle-bit on I/O6. |
| VCC | Power Supply | 2.7–3.6 V supply; internal regulation ensures stable core voltage across operating range. |
| GND | Ground Reference | Signal and power return path; decoupling required within 10 mm of VCC pin per layout guidelines. |
| RESET | Reset Input | Not functional on AT49BV001ANT-55TU - differs from non-N variants where 12 V override enables boot block reprogramming. |
| NC (Pin 9) | No Connect | Unbonded pin; must remain unconnected on PCB - floating or tied to GND/VCC may cause latch-up or ESD risk. |
Key Features
| Feature | Design Value |
|---|---|
| Sector Architecture | One 16 KB boot block (1C000H–1FFFFH), two 8 KB parameter blocks, and two main memory blocks (32 KB + 64 KB) - enables selective firmware update without erasing critical boot code. |
| Boot Block Lockout | Software-enabled permanent write protection for boot sector; once activated, prevents accidental overwrite of secure startup code under ≤5.5 V conditions. |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), noise filtering (rejects <15 ns pulses), and CE/OE/WE inhibit logic - eliminates spurious writes during power transients or EMI events. |
| DATA Polling & Toggle Bit | Dual asynchronous status reporting: I/O7 complement indicates programming completion; I/O6 toggling provides real-time erase/program progress feedback without CPU polling overhead. |
| Green Packaging | Pb/halide-free TSOP package (32T) - meets RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3 (MSL3). |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
|
Use Scenario: Storing firmware images and runtime configuration tables in programmable logic controllers subjected to frequent field updates and harsh electrical environments. IC Role / Device Role / Timing Role: Nonvolatile boot memory holding initialization code and user-defined ladder logic; accessed via standard microprocessor bus with CE/OE/WE handshaking. Use Value: Sector-erasable architecture allows updating application logic while preserving protected boot code; 55 ns access enables deterministic scan-cycle timing in real-time control loops. |
Use Scenario: Retaining calibrated sensor offsets, patient safety thresholds, and regulatory compliance settings in portable diagnostic equipment requiring traceable, tamper-resistant storage. IC Role / Device Role / Timing Role: Secure parameter memory with boot block lockout preventing unauthorized modification of FDA-mandated safety-critical values. Use Value: 10,000 endurance cycles support lifetime recalibration; 50 µA standby current extends battery life in handheld ultrasound or glucose monitors. |
| Telecom Base Station Bootloader | Automotive Infotainment Update Cache |
|
Use Scenario: Hosting primary bootloader code that validates and loads signed application firmware during cold start in cellular baseband units operating in extended temperature ranges. IC Role / Device Role / Timing Role: Read-only execution (XIP) source for ARM Cortex-M boot ROM; addressed via 17-bit bus with 55 ns tACC guaranteeing sub-100 ns instruction fetch latency. Use Value: Boot block lockout ensures bootloader integrity against malware or corruption; −40°C to +85°C rating matches outdoor macrocell thermal requirements. |
Use Scenario: Caching over-the-air (OTA) firmware patches and UI assets in automotive head units before validation and installation to minimize downtime during vehicle servicing. IC Role / Device Role / Timing Role: High-reliability intermediate storage buffer between CAN FD download interface and main application flash; erased/reprogrammed in background using sector-erase commands. Use Value: 3-second erase time enables rapid patch application; green packaging complies with automotive ELV directive and solder-reflow profiles. |
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 | 512 Kbit density (64K × 8), 55 ns access, same 3.3 V supply; lacks boot block lockout and parameter block segmentation. | Lower capacity limits use to simpler bootloaders; no hardware-protected sector - requires software-managed write protection. | Select when cost-sensitive designs require basic Flash functionality without sector-level security or 1 Mbit capacity. |
| MX29LV160CBTI-70G | 16 Mbit (2M × 8), 70 ns access, 2.7–3.6 V; includes CFI-compliant command set and 16-word boot sectors with lock bits. | Higher density supports complex firmware; CFI interface simplifies driver portability but increases BOM cost and footprint. | Choose for scalable platforms needing future-proofing beyond 1 Mbit, especially where standardized flash drivers are mandated. |
Compared with SST39VF010-55-4C-NHE and MX29LV160CBTI-70G, the AT49BV001ANT-55TU uniquely balances 1 Mbit capacity, 55 ns speed, dedicated boot block lockout, and industrial temperature support in a compact TSOP package - making it optimal for cost-constrained, safety-aware embedded systems requiring guaranteed boot integrity.
Availability
AT49BV001ANT-55TU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and telecom base station bootloader applications requiring stable component supply across extended lifecycle demands.
Supply support for AT49BV001ANT-55TU 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
Microchip Technology acquired Atmel in 2016 and maintains full support for legacy Atmel Flash memory products, including process consistency, documentation, and long-term availability commitments.
The AT49BV001ANT-55TU belongs to Atmel's BV-series single-supply Flash memory family, engineered specifically for reliable in-system reprogramming of boot code and configuration data in industrial and automotive control systems.
FAQ
What is the function of the RESET pin on the AT49BV001ANT-55TU?
The RESET pin is not functional on the AT49BV001ANT-55TU. Per the datasheet, this feature is unavailable on AT49BV001AN(T) variants. Unlike non-N versions, AT49BV001ANT-55TU cannot use RESET for boot block override or reset-induced high-impedance state entry. System-level reset must be managed externally, and boot block reprogramming relies solely on command sequences under ≤5.5 V.
How does the boot block lockout work on the AT49BV001ANT-55TU?
The AT49BV001ANT-55TU implements boot block lockout via a six-cycle command sequence (555H/AAH → AAH/55H → 555H/80H → 555H/AAH → AAH/55H → 555H/40H). Once enabled, the 16 KB boot sector (1C000H–1FFFFH) becomes permanently write-protected under ≤5.5 V. The lockout status is verified by reading bit I/O0 at address 1C002H - low = unlocked, high = locked.
What package type and pin count does the AT49BV001ANT-55TU use?
The AT49BV001ANT-55TU uses a 32-lead Thin Small Outline Package (TSOP, Type 1, 8 × 20 mm), designated as package code "32T". Pin 9 is explicitly defined as no-connect (NC) and must remain unconnected on the PCB. This green (Pb/halide-free) package complies with RoHS and JEDEC MO-142 BD specifications.
Can the AT49BV001ANT-55TU be programmed using standard microprocessor bus timing?
Yes, the AT49BV001ANT-55TU is fully compatible with standard microprocessor bus timing. It uses CE, OE, and WE controls identical to EPROM interfaces - enabling direct replacement in existing 8-bit or 16-bit bus systems. Command sequences follow standard write strobe protocols, with address latched on the falling edge of CE or WE and data on the rising edge, requiring no external high-voltage generators or custom timing controllers.
What are the erase options supported by the AT49BV001ANT-55TU?
The AT49BV001ANT-55TU supports both chip-erase and sector-erase operations. Chip erase clears Parameter Block 1, Parameter Block 2, Main Memory Block 1, and Main Memory Block 2 - but excludes the boot block if lockout is enabled. Sector erase targets individual 8 KB parameter blocks or 32 KB/64 KB main memory blocks using a six-cycle command with sector address (SA) and 30H data, completing in ≤3 seconds with internal timing.
AT49BV001ANT-55TU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm 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-TSOP
AT49BV001ANT-55TU FAQ
1.How can I place an order for AT49BV001ANT-55TU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV001ANT-55TU 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 AT49BV001ANT-55TU reliable?
The price and inventory of AT49BV001ANT-55TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV001ANT-55TU is usually 5 days.
3.What payment methods are accepted for AT49BV001ANT-55TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV001ANT-55TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV001ANT-55TU?
AT49BV001ANT-55TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV001ANT-55TU 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 AT49BV001ANT-55TU?
For technical support, including AT49BV001ANT-55TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV001ANT-55TU requirements.
6.How does Aetrix verify that AT49BV001ANT-55TU is sourced from the original manufacturer or authorized distributors?
All AT49BV001ANT-55TU 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 AT49BV001ANT-55TU meets industry standards.
7.What is the process for return or replacement of AT49BV001ANT-55TU?
All AT49BV001ANT-55TU units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV001ANT-55TU, 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 AT49BV001ANT-55TU part is unused and in its original packaging.
Return procedure for AT49BV001ANT-55TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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