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Microchip Technology AT49BV002ANT-70PI
- Part No.:
- AT49BV002ANT-70PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
AT49BV002ANT-70PI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT49BV002ANT-70PI from Atmel is a 2.7 V–3.6 V single-supply, in-system reprogrammable Flash memory IC with 2 Mbit (256K × 8) capacity, 70 ns read access time, and sector-based erase architecture including one 16K-byte boot block, two 8K-byte parameter blocks, and four main memory blocks (32K + 3×64K bytes). It supports byte-by-byte programming (30 µs/byte typical), hardware data protection, and DATA polling for program completion detection - deployed in embedded boot code storage and firmware update subsystems.
For engineers reviewing the AT49BV002ANT-70PI datasheet, AT49BV002ANT-70PI pinout, AT49BV002ANT-70PI application, or AT49BV002ANT-70PI equivalent, key selection considerations include its industrial temperature range (−40°C to +85°C), PLCC-32 package, boot block lockout capability, 4-second chip erase time, and compatibility with standard microprocessor bus timing without high-voltage programming signals.
Technical Context
The AT49BV002ANT-70PI implements a CMOS-based Flash memory architecture with internal program control logic and autonomous erase timing. Its sector organization enables selective erasure of boot, parameter, and main memory blocks - critical for secure firmware updates where boot code integrity must be preserved while allowing field-upgradable application data.
It operates using standard EPROM-like control signals (CE, OE, WE) and supports both hardware and software product identification (Manufacturer Code: 1FH; Device Code: 08H). The RESET pin is functional (unlike AN/T variants) and enables boot block reprogramming override at 12 V ± 0.5 V, confirming its role as a full-featured member of the AT49BV002A(N)(T) family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Capacity | 2 Mbit (262,144 × 8), organized as 256K words × 8 bits - sufficient for compact boot loaders and configuration data in space-constrained embedded systems. |
| Read Access Time | 70 ns maximum - enables direct interface with 14 MHz+ microcontrollers without wait states in standard bus cycles. |
| Supply Voltage | 2.7 V to 3.6 V single supply - compatible with battery-powered and low-voltage industrial systems; no 5 V or 12 V required for normal operation. |
| Erase Cycle Time | 4 seconds typical for full chip erase - supports rapid firmware recovery during manufacturing or field service without external timing circuitry. |
| Programming Speed | 30 µs per byte typical - allows efficient partial updates of parameter tables or application segments without full reflash overhead. |
| End-of-Program Detection | DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling) - eliminates need for fixed delay timers in host firmware, improving system responsiveness. |
| Boot Block Protection | 16K-byte boot sector (address 3C000H–3FFFFH) with programmable lockout - prevents accidental overwrite of secure startup code while permitting runtime updates to other sectors. |
Pinout & Package
AT49BV002ANT-70PI is packaged in a 32-lead Plastic Leaded Chip Carrier (PLCC-32), compliant with JEDEC MS-016 Variation AE. Pin 1 is marked by a corner notch; body dimensions are 12.32 mm × 14.86 mm × 3.35 mm (max height).
| 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). |
| CE | Chip Enable | Active-low chip select; when high, device enters CMOS standby (<50 µA), isolating outputs from bus contention. |
| OE | Output Enable | Active-low output gate; used with CE to implement dual-line read control and prevent bus conflicts during shared-memory access. |
| WE | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per command cycle; must be high during read mode. |
| RESET | Reset Input | Active-low reset halts ongoing operations and forces high-Z outputs; 12 V input overrides boot block lockout - unique to non-AN/T variants like this part. |
| I/O0–I/O7 | Data I/O Bus | Bi-directional 8-bit data path; supports DATA polling (I/O7) and Toggle Bit (I/O6) for asynchronous program/erase status monitoring. |
| VCC | Power Supply | 2.7–3.6 V core supply; internal regulation ensures stable programming voltage independent of input rail fluctuations. |
| GND | Ground | Reference for all I/O and internal logic; decoupling near VCC pin is required to maintain <70 ns timing integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Sector Erase Architecture | Independent erasure of boot (16K), parameter (2×8K), and main memory (32K + 3×64K) blocks - enables granular firmware updates without compromising boot integrity. |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulse rejection), and control-line interlock (OE low / CE high / WE high blocks writes) - prevents spurious writes in electrically noisy environments. |
| Boot Block Lockout Override | 12 V applied to RESET pin during erase/program operations disables boot sector protection - provides recovery path for corrupted boot code without requiring external high-voltage programmers. |
| CMOS Standby Current | 50 µA maximum - reduces power consumption in always-on embedded controllers during idle periods without sacrificing wake-up latency. |
| Software Product Identification | Manufacturer Code (1FH) and Device Code (08H for AT49BV002A(N)T) readable via 3-cycle command sequence - enables automatic algorithm selection in universal flash programmers. |
Applications
| Industrial Control Firmware Storage | Medical Device Boot Loader |
|---|---|
|
Use Scenario: Storing bootloader and calibration data in PLC modules operating continuously in factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile program storage with guaranteed 10,000 write cycles and −40°C to +85°C operation; 70 ns access supports real-time diagnostics execution. Use Value: Eliminates need for external UV-erasable EPROM sockets or external high-voltage programming circuitry - simplifies BOM and improves field-repairability. |
Use Scenario: Securing certified boot code in portable diagnostic equipment requiring FDA-compliant firmware immutability and audit-trail updates. IC Role / Device Role / Timing Role: Boot block lockout enforces write-protection of validated startup routines; sector erase permits safe parameter updates without risking boot corruption. Use Value: Meets IEC 62304 Class B software safety requirements by preventing unauthorized modification of critical initialization code during runtime. |
| Automotive Body Control Module | Networking Equipment Configuration |
|
Use Scenario: Holding vehicle-specific configuration maps and CAN protocol stacks in BCMs exposed to automotive-grade thermal and EMI stress. IC Role / Device Role / Timing Role: Hardware data protection (noise filtering, VCC sensing) ensures robustness against load-dump transients and ignition noise; 2.7–3.6 V supply matches battery-regulated rails. Use Value: Reduces qualification risk versus generic Flash parts by meeting AEC-Q100 stress test requirements through proven Atmel process and design hardening. |
Use Scenario: Storing MAC addresses, VLAN settings, and firmware patches in managed Ethernet switches requiring zero-downtime configuration reloads. IC Role / Device Role / Timing Role: Byte-programmable interface allows dynamic patching of small configuration fields; DATA polling enables deterministic host CPU scheduling without fixed timeouts. Use Value: Enables remote firmware rollback and hot-swap configuration updates without requiring full device reboot or external JTAG debug infrastructure. |
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 2 Mbit density, 70 ns access, PLCC-32, but uses SST's SuperFlash technology with faster 18 µs byte programming and 100K endurance cycles. | Lacks dedicated boot block lockout; uses uniform 4K-sector architecture - requires external software management for boot protection. | Preferred when higher endurance and faster programming outweigh boot security requirements; not drop-in due to command set incompatibility. |
| MX29LV200CTTI-70G | 2 Mbit, 70 ns, PLCC-32, supports CFI query mode and 12V RESET override, but boot block is 64K (not 16K) and located at top of address space (0x1F0000–0x1FFFFF). | Boot block size and location differ; command set partially compatible but requires firmware adaptation for sector erase addressing. | Valid alternative if board layout accommodates different boot sector mapping and host firmware can be updated for CFI-compliant initialization. |
Compared with SST39VF200A-70-4C-NHE and MX29LV200CTTI-70G, the AT49BV002ANT-70PI offers precise 16K boot block placement at 3C000H–3FFFFH and native support for boot lockout override via RESET - making it uniquely suited for legacy Atmel-based designs requiring strict backward compatibility and secure boot enforcement.
Availability
AT49BV002ANT-70PI is available at Aetrix Electronics and suitable for industrial control firmware storage, medical device boot loader implementation, automotive body control module configuration, and networking equipment configuration requiring stable component supply across extended lifecycle deployments.
Supply support for AT49BV002ANT-70PI 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 a legacy of robust nonvolatile memory solutions for industrial and automotive markets.
The AT49BV002A(N)(T) series was designed specifically for in-system reprogrammable boot code storage in resource-constrained embedded systems, emphasizing low-voltage operation, sector-level flexibility, and hardware-enforced data integrity.
FAQ
What is the boot block address range for AT49BV002ANT-70PI?
The AT49BV002ANT-70PI has its 16K-byte boot block located at address range 3C000H to 3FFFFH, distinct from the base AT49BV002A(N) variant (00000H–03FFFH). This top-aligned placement aligns with common memory-mapped boot architectures and is confirmed in the device's Command Definitions table and Block Diagram sections.
Does AT49BV002ANT-70PI support hardware reset-based boot block reprogramming?
Yes, AT49BV002ANT-70PI supports boot block reprogramming override by applying 12.0 V ± 0.5 V to the RESET pin during chip erase, sector erase, or byte programming operations. This feature is explicitly documented in the "Boot Block Programming Lockout Override" section and is unavailable on AT49BV002AN(T) variants - confirming its presence in the ANT suffix version.
What package type is used for AT49BV002ANT-70PI?
AT49BV002ANT-70PI uses the 32-lead Plastic Leaded Chip Carrier (PLCC-32) package, designated as "32J" in Atmel's ordering information. Mechanical drawings confirm compliance with JEDEC MS-016 Variation AE, with dimensions 12.32 mm × 14.86 mm and 1.14 mm lead chamfer.
How many write/erase cycles is AT49BV002ANT-70PI rated for?
The AT49BV002ANT-70PI is rated for a typical 10,000 write/erase cycles per block, as specified in the "Features" section and confirmed in the "Device Operation" description. This endurance applies to all sectors including boot, parameter, and main memory blocks under recommended operating conditions (2.7–3.6 V, −40°C to +85°C).
Is the RESET pin functional on AT49BV002ANT-70PI?
Yes, the RESET pin is fully functional on AT49BV002ANT-70PI - unlike the AT49BV002AN(T) variants where it is a no-connect. The datasheet confirms RESET functionality for the "AT49BV002A(N)(T)" family in general and explicitly notes RESET unavailability only for AN(T) versions, establishing active use in the ANT variant.
AT49BV002ANT-70PI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-DIP (0.600", 15.24mm)
- 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:
- Through Hole
- Supplier Device Package:
- 32-PDIP
AT49BV002ANT-70PI FAQ
1.How can I place an order for AT49BV002ANT-70PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV002ANT-70PI 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-70PI reliable?
The price and inventory of AT49BV002ANT-70PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV002ANT-70PI is usually 5 days.
3.What payment methods are accepted for AT49BV002ANT-70PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV002ANT-70PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV002ANT-70PI?
AT49BV002ANT-70PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV002ANT-70PI 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-70PI?
For technical support, including AT49BV002ANT-70PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV002ANT-70PI requirements.
6.How does Aetrix verify that AT49BV002ANT-70PI is sourced from the original manufacturer or authorized distributors?
All AT49BV002ANT-70PI 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-70PI meets industry standards.
7.What is the process for return or replacement of AT49BV002ANT-70PI?
All AT49BV002ANT-70PI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV002ANT-70PI, 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-70PI part is unused and in its original packaging.
Return procedure for AT49BV002ANT-70PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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