My Inquiry
My Account
Microchip Technology AT49BV002N-12VI
- Part No.:
- AT49BV002N-12VI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT49BV002N-12VI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,073
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT49BV002N-12VI from Microchip Technology (formerly Atmel) is a 2 Mbit (256K × 8) single-supply 3V-only Flash memory IC used for nonvolatile code and data storage in embedded systems. It features 70 ns read access time, 10-second chip erase, byte-programmable architecture with sector protection, and operates across -40°C to +85°C industrial temperature range in VSOP-32 package.
For engineers reviewing the AT49BV002N-12VI datasheet, AT49BV002N-12VI pinout, AT49BV002N-12VI application, or AT49BV002N-12VI equivalent, key selection considerations include boot-block lockout capability, DC pin compatibility in VSOP/TSOP packages, sector erase granularity (16K/8K/96K/128K), DATA polling/Toggle Bit verification, and 2.7–3.6V VCC tolerance with 50 µA CMOS standby current.
Technical Context
The AT49BV002N-12VI implements a command-based software-controlled Flash architecture with six-byte erase/program sequences using standard microprocessor timing. Its internal control logic manages erase timing autonomously without external clocks, supporting chip, sector, and byte-level operations via CE/OE/WE interface signals.
It integrates hardware data protection including VCC sense (<1.8V inhibit), noise filtering (<15 ns pulse rejection), and dual-line bus contention prevention via independent CE and OE enable logic. The RESET pin is DC-connected (not functional for reset or boot override), distinguishing it from T-suffix variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), organized as 256K words × 8 bits - supports full firmware image storage in space-constrained designs. |
| Read Access Time | 120 ns max - defines minimum bus cycle time for reliable instruction fetch or data read in 8-bit parallel interfaces. |
| Byte Programming Time | 30 µs typical - enables rapid field updates of configuration data or small code patches without long write stalls. |
| Erase Cycle Time | 10 seconds max for full chip erase - allows predictable in-system reprogramming windows during maintenance or upgrade cycles. |
| VCC Operating Range | 2.7 V to 3.6 V - compatible with Li-ion battery-backed or regulated 3.3V rails without level-shifting circuitry. |
| Standby Current | 50 µA CMOS - ensures ultra-low power retention in always-on embedded controllers or IoT edge nodes. |
| Endurance | 10,000 program/erase cycles - supports long-term field deployment in applications requiring periodic firmware revision. |
Pinout & Package
AT49BV002N-12VI is supplied in a 32-lead Very Small Outline Package (VSOP), 8 mm × 14 mm body size, with gull-wing leads and standard JEDEC MO-178 footprint. Pin 9 is designated "DC" (Don't Connect) per datasheet Rev. 0982D.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; A0–A17 map directly to memory location bits. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel data path for read/write operations; high-impedance when CE or OE is inactive. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read access; prevents bus contention. |
| OE | Output Enable | Active-low output control; decouples data bus from outputs when high, enabling shared bus architectures. |
| WE | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per command sequence timing. |
| RESET | DC Terminal | Not connected internally (DC); no reset or boot override function - differs from T-suffix variants. |
| VCC | Power Supply | Single 2.7–3.6V supply; powers core logic, charge pumps, and I/O buffers; requires local 0.1 µF decoupling. |
| GND | Ground Reference | Common return for VCC and I/O; must be low-inductance connection to minimize switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16K-byte protected region (00000H–03FFFH) with irreversible lockout via command sequence - secures bootloader code against accidental overwrite. |
| Sector Architecture | Four independently erasable sectors: one 16K boot block, two 8K parameter blocks, and two main memory blocks (96K + 128K) - enables modular firmware updates. |
| DATA Polling & Toggle Bit | Hardware status feedback via I/O7 complement (polling) or I/O6 toggle - eliminates need for fixed delay timers during programming/erase. |
| Hardware Data Protection | VCC sense, noise filtering, and CE/OE/WE interlock - prevents spurious writes during power-up/down or EMI events. |
| Single 3V Supply Operation | No 5V or 12V required for read/write/erase - simplifies power design and eliminates high-voltage charge pump complexity. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing boot firmware and field-upgradable control logic in programmable logic controllers with extended service life requirements. IC Role / Device Role / Timing Role: Nonvolatile code storage IC providing deterministic 120 ns read access for real-time instruction fetch and 10-second erase for secure firmware rollback. Use Value: Boot block lockout ensures bootloader integrity across 10,000+ field updates; 50 µA standby current extends battery backup duration during AC loss. | Use Scenario: Retaining calibrated sensor offsets, user preferences, and regulatory-compliant device settings in portable diagnostic equipment. IC Role / Device Role / Timing Role: Parameter block Flash memory enabling byte-level updates of calibration data without erasing operational firmware. Use Value: Dual 8K parameter blocks allow A/B versioning of calibration tables; sector erase isolates changes to prevent corruption of active runtime data. |
| Automotive Body Control Module | Networking Equipment Boot Image |
Use Scenario: Hosting startup code and configurable feature sets in automotive BCMs operating across -40°C to +85°C ambient. IC Role / Device Role / Timing Role: Industrial-grade Flash memory delivering guaranteed 120 ns read timing and robust 2.7–3.6V operation under battery voltage transients. Use Value: Wide VCC range tolerates cold-crank (2.7V) and load-dump (3.6V) conditions; sector architecture supports incremental feature activation via field update. | Use Scenario: Storing primary and fallback boot images in enterprise switches and routers requiring zero-downtime firmware upgrades. IC Role / Device Role / Timing Role: Dual-main-memory-block Flash enabling atomic swap between active and staging firmware partitions. Use Value: 96K + 128K main blocks support mirrored boot images; chip erase preserves boot block while updating application code. |
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 | 4 Mbit density, 70 ns access, 3.0–3.6V, same 32-pin TSOP/VSOP footprint but different command set and sector map. | Higher density supports larger firmware; lacks boot block lockout - requires external MCU-based protection logic. | Select when >2 Mbit capacity is needed and software-managed protection suffices. |
| MX29LV200CBTI-70G | 2 Mbit, 70 ns, 2.7–3.6V, 48-pin TSOP; includes CFI query support and hardware reset, but no DC pin - RESET is functional. | CFI compliance simplifies auto-detection in generic programmers; RESET functionality enables system-level recovery not available on AT49BV002N-12VI. | Select when CFI compatibility or active RESET signal is required for host system integration. |
Compared with SST39VF200A-70-4C-NHE and MX29LV200CBTI-70G, the AT49BV002N-12VI offers unique boot block lockout for immutable bootloader storage and DC RESET pin simplification, at the cost of lower density and absence of CFI - making it optimal for cost-sensitive, safety-critical embedded systems where firmware partitioning integrity is paramount.
Availability
AT49BV002N-12VI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and automotive body control module applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.
Supply support for AT49BV002N-12VI 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 legacy Flash product lines with full datasheet, packaging, and reliability continuity.
The AT49BV series was designed for in-system reprogrammable nonvolatile storage in resource-constrained 8-bit microcontroller systems, emphasizing low-voltage operation, sector-level flexibility, and hardware data integrity features.
FAQ
What is the function of the RESET pin on the AT49BV002N-12VI?
The RESET pin on the AT49BV002N-12VI is a DC (Don't Connect) terminal with no internal connection. Unlike T-suffix variants, it provides neither reset functionality nor boot block override capability. Per datasheet Rev. 0982D, this pin must remain unconnected in PCB layout to avoid unintended behavior. The AT49BV002N-12VI relies solely on CE/OE/WE control sequencing for all operations.
Does the AT49BV002N-12VI support 5V-tolerant inputs?
No, the AT49BV002N-12VI does not support 5V-tolerant inputs. All input voltages (including CE, OE, WE, A0–A17, and I/O0–I/O7) must remain within -0.6V to VCC + 0.6V, with VCC limited to 2.7–3.6V. Applying 5V signals risks permanent damage. Level-shifting circuitry is required when interfacing with 5V microcontrollers. This constraint is explicitly defined in the Absolute Maximum Ratings table of the AT49BV002N-12VI datasheet.
How is boot block protection enabled on the AT49BV002N-12VI?
Boot block protection on the AT49BV002N-12VI is enabled by executing a six-cycle command sequence: write 0xAA to address 0x5555, 0x55 to 0x2AAA, 0x80 to 0x5555, then 0xAA, 0x55, and 0x40 to 0x5555. Once activated, the 16K-byte boot block (00000H–03FFFH) becomes permanently write-protected. The AT49BV002N-12VI does not support RESET-based override, making this lockout irreversible in hardware.
What package type is used for the AT49BV002N-12VI?
The AT49BV002N-12VI uses a 32-lead Very Small Outline Package (VSOP) measuring 8 mm × 14 mm, per ordering code suffix "V". This package features gull-wing leads, complies with JEDEC MO-178, and shares footprint compatibility with TSOP-32 variants. Pin 9 is marked "DC" (Don't Connect), and thermal pad is not present - confirming it as a standard VSOP, not thermally enhanced variant.
Can the AT49BV002N-12VI be used as a direct replacement for the AT49BV002-12VI?
No, the AT49BV002N-12VI is not a direct replacement for the AT49BV002-12VI. While both share 120 ns access time and VSOP-32 packaging, the "N" suffix denotes a different internal configuration: the AT49BV002N-12VI has a DC RESET pin and boot block at 00000H–03FFFH, whereas the non-N variant supports functional RESET and may differ in sector mapping. PCB layout and firmware initialization must be verified per respective datasheets before substitution.
AT49BV002N-12VI 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:
- 2Mbit
- Memory Organization:
- 256K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 50µs
- Access Time:
- 120 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
AT49BV002N-12VI FAQ
1.How can I place an order for AT49BV002N-12VI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV002N-12VI 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 AT49BV002N-12VI reliable?
The price and inventory of AT49BV002N-12VI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV002N-12VI is usually 5 days.
3.What payment methods are accepted for AT49BV002N-12VI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV002N-12VI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV002N-12VI?
AT49BV002N-12VI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV002N-12VI 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 AT49BV002N-12VI?
For technical support, including AT49BV002N-12VI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV002N-12VI requirements.
6.How does Aetrix verify that AT49BV002N-12VI is sourced from the original manufacturer or authorized distributors?
All AT49BV002N-12VI 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 AT49BV002N-12VI meets industry standards.
7.What is the process for return or replacement of AT49BV002N-12VI?
All AT49BV002N-12VI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV002N-12VI, 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 AT49BV002N-12VI part is unused and in its original packaging.
Return procedure for AT49BV002N-12VI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV002N-12VI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
