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Microchip Technology AT49BV002ANT-70JI
- Part No.:
- AT49BV002ANT-70JI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT49BV002ANT-70JI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,822
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Product details
Overview
AT49BV002ANT-70JI from Atmel is a 2.7V-only, 2 Mbit (256K × 8) in-system reprogrammable Flash memory IC with 70 ns read access time, sector-based erase architecture (1×16K boot block, 2×8K parameter blocks, 4×main blocks), and hardware data protection. It operates across –40°C to +85°C and supports byte-by-byte programming at 30 µs/byte for embedded firmware storage in microcontroller-based systems.
For engineers reviewing the AT49BV002ANT-70JI datasheet, AT49BV002ANT-70JI pinout, AT49BV002ANT-70JI application, or AT49BV002ANT-70JI equivalent, this page delivers verified electrical specs, PLCC-32 package mapping, boot-block lockout behavior, sector erase timing, and real-world use context for industrial control, BIOS storage, and field-upgradable firmware modules.
Technical Context
The AT49BV002ANT-70JI implements a standard parallel Flash interface with CE/OE/WE control logic and RESET input (active-low, 12V override capable). Its internal program control uses command sequences written via address/data latching on WE/CE edges - no external high-voltage programming supply required.
It features dual erase modes: chip-erase (4 s max) and sector-erase (same timing), with boot block lockout enabled via six-cycle command sequence. The device distinguishes itself from AT49BV002A(N) by relocating the 16K boot block to address range 3C000H–3FFFFH and supporting RESET-based lockout override - functionality absent in the AN variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (256K × 8), enabling full firmware images for 8-bit MCUs without external expansion. |
| Read Access Time | 70 ns - meets timing requirements for 14 MHz bus interfaces in legacy industrial controllers. |
| Supply Voltage | 2.7 V to 3.6 V - single-supply operation compatible with battery-backed or low-voltage rail systems. |
| Byte Programming Time | 30 µs typical - allows rapid field updates of configuration parameters or patch code. |
| Erase Cycle Time | 4 seconds max - enables full-sector reprogramming within interactive diagnostic or maintenance windows. |
| End-of-Program Detection | DATA polling (I/O7 complement) or Toggle Bit (I/O6 toggling) - eliminates need for fixed delay timers in host firmware. |
| Write Endurance | 10,000 program/erase cycles - sufficient for firmware update cycles over 10+ years in deployed equipment. |
| Standby Current | 50 µA CMOS - critical for low-power sleep modes in battery-operated remote sensors or meters. |
Pinout & Package
AT49BV002ANT-70JI is packaged in a 32-lead Plastic Leaded Chip Carrier (PLCC-32), JEDEC MS-016 compliant, with 1.27 mm pitch, 12.45 mm × 14.95 mm body, and pin 1 identifier notch. Pin 1 is NC (no connect) per datasheet Rev. 3353D.
| 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 cycles. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface for read/write; supports DATA polling on I/O7 and Toggle Bit on I/O6. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for read access; controls bus contention. |
| OE | Output Enable | Active-low output gate; used with CE to place outputs in high-Z when inactive - prevents bus conflicts. |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and byte programming. |
| RESET* | Reset Input | Active-low reset; halts ongoing operations and forces high-Z outputs; 12V pulse overrides boot lockout. |
| VCC / GND | Power Supply | Single 2.7–3.6 V supply; 50 µA standby current enables ultra-low-power retention in sleep states. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Lockout | 16K-byte region (3C000H–3FFFFH) programmable-lockable via command sequence; prevents accidental overwrite of bootloader code. |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), noise filter (rejects <15 ns pulses), and control-line inhibit (OE low/CE high/WE high blocks writes). |
| Sector Erase Architecture | Independent erasure of 2×8K parameter blocks and 4 main blocks (32K + 3×64K) - enables selective firmware updates without full chip erase. |
| 12V RESET Override | Applying 12V ±0.5V to RESET pin re-enables boot block programming even after lockout - essential for emergency recovery. |
| Software Product Identification | Manufacturer code 1FH / device code 08H returned at A0=VIH after 555H/AAH → AAH/55H → 90H sequence - enables automatic algorithm selection in programmers. |
Applications
| Industrial PLC Firmware Storage | Embedded BIOS/Bootloader Retention |
|---|---|
|
Use Scenario: Storing ladder logic firmware and I/O configuration tables in programmable logic controllers requiring field updates without hardware replacement. IC Role / Device Role / Timing Role: Nonvolatile code storage with 70 ns read access synchronized to 8-bit microcontroller buses; sector erase enables partial firmware patches. Use Value: Eliminates need for external EPROM programmers; 10,000-cycle endurance supports >5 firmware revisions/year over 10-year product life. |
Use Scenario: Holding secure boot code and hardware initialization routines in medical imaging subsystems where tamper resistance and integrity are critical. IC Role / Device Role / Timing Role: Boot block (3C000H–3FFFFH) configured as write-protected region; RESET-based 12V override enables controlled recovery during validation. Use Value: Prevents unauthorized modification of startup code while allowing safe field updates to application partitions - meeting IEC 62304 Class C requirements. |
| Smart Meter Configuration Memory | Automotive Diagnostic Module Storage |
|
Use Scenario: Storing tariff schedules, calibration coefficients, and communication protocol stacks in utility smart meters operating on 3.3 V rails with battery backup. IC Role / Device Role / Timing Role: Low-power Flash memory with 50 µA standby current and 2.7–3.6 V operation - matches Li-ion or supercapacitor backup voltage profiles. Use Value: Enables >10-year data retention in battery-backed mode; sector erase permits tariff updates without disrupting metering accuracy calibration. |
Use Scenario: Hosting OBD-II diagnostic firmware and vehicle-specific DTC definitions in aftermarket scan tools requiring frequent software upgrades. IC Role / Device Role / Timing Role: Parallel interface compatible with automotive-grade 8-bit MCUs; DATA polling simplifies host MCU timing without external wait-state logic. Use Value: Reduces BOM cost vs. serial Flash by eliminating level shifters; 30 µs/byte programming enables sub-second firmware updates via CAN-to-parallel bridge. |
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 | Same density (2 Mbit), 70 ns access, but uses SST's SuperFlash technology with faster 18 µs byte programming and no RESET-based boot override. | Lacks 12V RESET override; boot block protection is software-only and non-recoverable once locked. | Choose for higher-speed programming where boot recovery is handled externally; verify compatibility with existing command-set firmware. |
| MX29LV200CTTI-70G | 2 Mbit, 70 ns, 3.0–3.6 V operation; includes CFI query support and wider temperature range (–40°C to +105°C), but no dedicated boot block lockout command. | Requires external logic or firmware to emulate boot protection; lacks hardware-level 12V override capability. | Prefer for extended-temperature environments where CFI compatibility simplifies multi-vendor tooling, but expect added firmware complexity for secure boot. |
Compared with SST39VF200A-70-4C-NHE and MX29LV200CTTI-70G, the AT49BV002ANT-70JI uniquely combines hardware-enforced boot block lockout with 12V RESET override - a critical differentiator for safety-critical firmware recovery in industrial and medical systems where guaranteed boot integrity is mandated.
Availability
AT49BV002ANT-70JI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, embedded BIOS retention, smart meter configuration memory, and automotive diagnostic module storage requiring stable component supply across long production lifecycles.
Supply support for AT49BV002ANT-70JI 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, Flash memory, and secure authentication ICs, with deep expertise in embedded system storage solutions.
The AT49BV002A(N)(T) family was designed specifically for in-system reprogrammability in resource-constrained 8-bit platforms, emphasizing low-voltage operation, hardware data protection, and flexible sector architecture for firmware and configuration storage.
FAQ
What is the boot block address range for AT49BV002ANT-70JI?
The AT49BV002ANT-70JI locates its 16K-byte boot block at address range 3C000H to 3FFFFH - distinct from the base AT49BV002A(N) which places it at 00000H–03FFFH. This relocation avoids conflict with main application code in systems using top-down memory mapping, and is confirmed in the "Notes" section of the datasheet Rev. 3353D.
Does AT49BV002ANT-70JI support 12V RESET override for boot block programming?
Yes, AT49BV002ANT-70JI supports 12V ±0.5V applied to the RESET pin to override enabled boot block lockout during chip erase, sector erase, or byte programming - a feature explicitly documented in the "BOOT BLOCK PROGRAMMING LOCKOUT OVERRIDE" section and absent in the AN variant. This enables emergency firmware recovery without hardware modification.
What package type does AT49BV002ANT-70JI use, and is pin 1 connected?
AT49BV002ANT-70JI uses the 32-lead PLCC (32J) package per the Ordering Information table. Pin 1 is designated NC (no connect) for the AT49BV002AN(T) variants, including AT49BV002ANT-70JI - confirmed in the "Note" under Pin Configurations and reinforced in the "AT49BV002AN(T) Ordering Information" section.
How is end-of-program detection implemented in AT49BV002ANT-70JI?
AT49BV002ANT-70JI provides two hardware-supported 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 programming/erasing). Both are usable at any point in the cycle and eliminate reliance on fixed timing delays in host firmware.
What is the maximum erase time for a full chip erase on AT49BV002ANT-70JI?
The maximum erase time for a full chip erase on AT49BV002ANT-70JI is 4 seconds, as specified in the "ERASURE" section and confirmed in the "AC Program Cycle Characteristics" table under parameter tEC. This value is guaranteed across the industrial temperature range (–40°C to +85°C) and applies when boot block lockout is disabled.
AT49BV002ANT-70JI 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-70JI FAQ
1.How can I place an order for AT49BV002ANT-70JI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV002ANT-70JI 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-70JI reliable?
The price and inventory of AT49BV002ANT-70JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV002ANT-70JI is usually 5 days.
3.What payment methods are accepted for AT49BV002ANT-70JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV002ANT-70JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV002ANT-70JI?
AT49BV002ANT-70JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV002ANT-70JI 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-70JI?
For technical support, including AT49BV002ANT-70JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV002ANT-70JI requirements.
6.How does Aetrix verify that AT49BV002ANT-70JI is sourced from the original manufacturer or authorized distributors?
All AT49BV002ANT-70JI 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-70JI meets industry standards.
7.What is the process for return or replacement of AT49BV002ANT-70JI?
All AT49BV002ANT-70JI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV002ANT-70JI, 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-70JI part is unused and in its original packaging.
Return procedure for AT49BV002ANT-70JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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