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Microchip Technology AT49BV002ANT-70JU
- Part No.:
- AT49BV002ANT-70JU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT49BV002ANT-70JU.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,207
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Product details
Overview
AT49BV002ANT-70JU from Atmel is a 2 Mbit (256K × 8) single-supply Flash memory IC operating at 2.7–3.6 V, featuring 70 ns read access time, 4-second chip erase, 30 µs/byte programming, and hardware data protection. It serves as nonvolatile program/data storage in embedded microcontroller systems requiring in-system reprogrammability without high-voltage programming.
For engineers reviewing the AT49BV002ANT-70JU datasheet, AT49BV002ANT-70JU pinout, AT49BV002ANT-70JU application, or AT49BV002ANT-70JU equivalent, key selection criteria include boot-block lockout capability (3C000H–3FFFFH), sector-erasable architecture (1×16K boot + 2×8K parameter + 4×main blocks), and PLCC-32 package compatibility with industrial temperature range (−40°C to +85°C).
Technical Context
The AT49BV002ANT-70JU implements a standard parallel interface with CE/OE/WE control logic and supports EPROM-like read operation, software command-based byte programming, sector erase, and full-chip erase. Its internal program controller manages timing for erase (tEC = 4 s max) and programming (tBP = 30 µs typ), eliminating external timing circuitry.
It features dual data-valid detection methods-DATA polling (I/O7 complement toggle) and Toggle Bit (I/O6 toggling)-to signal completion of program/erase cycles. The RESET pin enables system-level reset and, when driven to 12 V, overrides boot-block lockout for reprogramming-though this function is disabled on the AN(T) variant per datasheet note.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), organized as 256K words × 8 bits - provides sufficient space for firmware images and configuration data in resource-constrained MCU systems. |
| Read Access Time | 70 ns - enables direct execution from flash (XIP) in 20–25 MHz bus systems without wait states. |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic and battery-backed operation; eliminates need for separate 5 V programming supply. |
| Erase Time | 4 seconds (max) for full chip - allows rapid field firmware updates during maintenance windows. |
| Programming Speed | 30 µs per byte (typical) - supports efficient incremental code patching and parameter updates. |
| Endurance | 10,000 write/erase cycles - suitable for applications requiring moderate field reprogramming frequency over product lifetime. |
| Standby Current | 50 µA CMOS - minimizes power draw in sleep modes of portable or energy-sensitive devices. |
Pinout & Package
AT49BV002ANT-70JU is packaged in a 32-lead Plastic Leaded Chip Carrier (PLCC-32), compliant with JEDEC MS-016 Variation AE. Pin 1 identifier is marked by a corner notch; body dimensions are 12.32 mm × 14.86 mm × 3.56 mm (max height). The package supports surface-mount reflow and socketed prototyping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A11 is "don't care" in command sequences, enabling aliasing (e.g., AAA → 2AA). |
| I/O0–I/O7 | Data Inputs/Outputs | 8-bit bidirectional data bus; I/O7 used for DATA polling, I/O6 for Toggle Bit status indication during program/erase. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read access; controls device selection on shared buses. |
| OE | Output Enable | Active-low output control; places I/O pins in high-impedance state when high, preventing bus contention during multi-device reads. |
| WE | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per command sequence timing; inhibits programming if held high. |
| RESET* | Reset Input | Active-low system reset; halts ongoing operations and forces high-Z outputs; 12 V input enables boot-block override (functional on AT49BV002ANT). |
| VCC / GND | Power Supply | Single 2.7–3.6 V supply; CMOS standby current ≤50 µA ensures low-power retention in battery-operated systems. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16 KB block (3C000H–3FFFFH) permanently protected after enable command; prevents accidental overwrite of bootloader code during field updates. |
| Sector-Erasable Architecture | Independent erasure of 1×16K boot block, 2×8K parameter blocks, and 4 main memory blocks (32K + 3×64K) - enables granular firmware partitioning and safe OTA updates. |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line interlock (OE low/CE high/WE high blocks writes) - prevents spurious writes in electrically noisy environments. |
| DATA Polling & Toggle Bit | Real-time cycle completion detection via I/O7 complement or I/O6 toggling - eliminates fixed-delay polling loops and reduces host CPU overhead. |
| Single-Voltage In-System Reprogrammability | No external 12 V required for standard programming; 5 V-compatible command set executed at 3.3 V - simplifies PCB design and eliminates HV charge pumps. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
|
Use Scenario: Storing firmware images and calibration tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile program memory with sector-erase capability, enabling field-upgradable ladder logic and safety-critical parameter sets. Use Value: Boot block lockout ensures bootloader integrity across 10,000+ update cycles; 70 ns read speed supports deterministic scan-cycle timing in real-time control loops. |
Use Scenario: Retaining device-specific calibration coefficients, user preferences, and regulatory-compliant audit logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, low-power configuration storage with hardware write protection against ESD-induced corruption during clinical use. Use Value: 50 µA standby current extends battery life between recalibrations; 2.7–3.6 V operation matches Li-ion battery discharge curve without regulation overhead. |
| Automotive Infotainment Bootloader | Networking Equipment Parameter Storage |
|
Use Scenario: Hosting secure bootloader code that validates and loads application firmware in head-unit systems subject to ISO 16750-2 electrical stress testing. IC Role / Device Role / Timing Role: Trusted boot memory with 12 V RESET override for recovery-mode reprogramming after failed OTA updates. Use Value: Industrial temperature rating (−40°C to +85°C) ensures reliability under hood conditions; boot lockout prevents unauthorized modification of secure boot chain. |
Use Scenario: Storing MAC addresses, VLAN configurations, and firmware version metadata in managed Ethernet switches operating 24/7 in telecom cabinets. IC Role / Device Role / Timing Role: High-endurance parameter memory supporting frequent configuration changes without wear leveling. Use Value: 4-second chip erase enables rapid factory reset; sector architecture isolates critical MAC storage (parameter blocks) from volatile runtime data (main blocks). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF200A-70-4C-NHE | 2 Mbit, 70 ns, 3.0–3.6 V; no boot-block lockout; uses different command set (SST proprietary); 48-ball TSOP package. | Lacks dedicated boot-sector protection; requires modified driver software; better suited for general-purpose code storage than secure bootloader roles. | Select when cost sensitivity outweighs boot security needs and board layout accommodates TSOP footprint. |
| MX29LV200CTTI-70G | 2 Mbit, 70 ns, 3.0–3.6 V; includes CFI-compliant command set; 48-pin TSOP; boot-block at top (00000H–03FFFH), not bottom. | Boot block location differs (top vs. AT49BV002ANT's bottom-aligned 3C000H–3FFFFH); CFI support eases auto-detection in generic flash programmers. | Choose for interoperability with CFI-aware toolchains and where top-boot architecture aligns with existing firmware partitioning. |
Compared with SST39VF200A-70-4C-NHE and MX29LV200CTTI-70G, the AT49BV002ANT-70JU uniquely delivers bottom-aligned boot-block lockout with 12 V RESET override, making it optimal for secure bootloader implementations where physical tamper resistance and recovery capability are mandatory design requirements.
Availability
AT49BV002ANT-70JU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, automotive infotainment bootloader, networking equipment parameter storage, and embedded microcontroller code storage requiring stable component supply and long-term lifecycle support.
Supply support for AT49BV002ANT-70JU 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 fabless semiconductor company specializing in microcontrollers, nonvolatile memory, and secure authentication ICs, with a legacy of robust industrial-grade Flash solutions.
The AT49BV002A(N)(T) family was designed specifically for in-system reprogrammable embedded applications requiring single-supply operation, sector-level erase granularity, and hardware-enforced boot code protection - targeting industrial control, medical, and automotive subsystems.
FAQ
What is the boot block address range for AT49BV002ANT-70JU?
The AT49BV002ANT-70JU has its 16 KB boot block located at address range 3C000H to 3FFFFH, distinct from the base AT49BV002A(N) variant (00000H–03FFFH). This bottom-aligned placement isolates critical bootloader code from main application memory and enables independent lockout via the six-byte command sequence documented in the datasheet.
Does AT49BV002ANT-70JU support 12 V RESET override for boot block reprogramming?
Yes, AT49BV002ANT-70JU supports 12 V ± 0.5 V applied to the RESET pin during chip erase, sector erase, or byte programming to temporarily disable boot block lockout. This feature is explicitly enabled for the AT49BV002ANT variant per datasheet Section 3 ("RESET") and Figure 4, unlike the AT49BV002AN(T) where RESET is NC.
What package type does AT49BV002ANT-70JU use, and what are its key mechanical dimensions?
AT49BV002ANT-70JU uses the 32-lead PLCC (Plastic Leaded Chip Carrier) package, designated as 32J. Its body measures 12.32 mm × 14.86 mm, with maximum height of 3.56 mm and lead pitch of 1.27 mm. Pin 1 is identified by a corner notch, and the package complies with JEDEC MS-016 Variation AE.
How does AT49BV002ANT-70JU detect end-of-program without polling fixed delays?
AT49BV002ANT-70JU provides two hardware-assisted detection methods: DATA polling (reading the programmed byte returns its complement on I/O7 until completion) and Toggle Bit (I/O6 toggles between 0 and 1 during active programming/erasing). Both allow the host processor to verify completion dynamically, reducing software overhead and improving system responsiveness.
What is the difference between AT49BV002ANT-70JU and AT49BV002AN-70JU?
The AT49BV002ANT-70JU includes the RESET pin functionality (enabling 12 V boot-block override), whereas AT49BV002AN-70JU has RESET as a no-connect (NC) pin per datasheet Note on page 1. Additionally, the ANT variant uses the top-aligned boot block (3C000H–3FFFFH), while the AN variant shares the base A(N) bottom-aligned boot block (00000H–03FFFH).
AT49BV002ANT-70JU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 2Mbit
- Memory Organization:
- 256K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 50µs
- Access Time:
- 70 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT49BV002ANT-70JU FAQ
1.How can I place an order for AT49BV002ANT-70JU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV002ANT-70JU 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 AT49BV002ANT-70JU reliable?
The price and inventory of AT49BV002ANT-70JU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV002ANT-70JU is usually 5 days.
3.What payment methods are accepted for AT49BV002ANT-70JU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV002ANT-70JU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV002ANT-70JU?
AT49BV002ANT-70JU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV002ANT-70JU 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 AT49BV002ANT-70JU?
For technical support, including AT49BV002ANT-70JU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV002ANT-70JU requirements.
6.How does Aetrix verify that AT49BV002ANT-70JU is sourced from the original manufacturer or authorized distributors?
All AT49BV002ANT-70JU 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 AT49BV002ANT-70JU meets industry standards.
7.What is the process for return or replacement of AT49BV002ANT-70JU?
All AT49BV002ANT-70JU units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV002ANT-70JU, 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 AT49BV002ANT-70JU part is unused and in its original packaging.
Return procedure for AT49BV002ANT-70JU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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