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Microchip Technology AT49BV002T-12TI
- Part No.:
- AT49BV002T-12TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV002T-12TI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,005
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Product details
Overview
AT49BV002T-12TI from Microchip Technology (formerly Atmel) is a 2 Mbit (256K × 8) single-supply Flash memory IC designed for in-system reprogrammability in embedded boot code storage. It operates at 2.7–3.6 V, delivers 120 ns read access time, supports sector-erase architecture with a 16 KB boot block (address range 3C000H–3FFFFH), and guarantees ≥10,000 write/erase cycles. It is used in industrial microcontroller boot loaders where secure, field-upgradable firmware storage is required.
For engineers reviewing the AT49BV002T-12TI datasheet, AT49BV002T-12TI pinout, AT49BV002T-12TI application, or AT49BV002T-12TI equivalent, this page provides verified technical context, package-specific pin functions, boot-block protection behavior, DATA polling and toggle-bit status detection, and validated alternative parts for industrial temperature-range Flash memory replacement.
Technical Context
The AT49BV002T-12TI implements a command-based software-controlled Flash architecture with six-byte erase/program sequences, internal timing for chip and sector erase (10 s max), and hardware data protection via VCC sense, noise filtering (<15 ns pulse rejection), and control-line inhibit logic. It uses standard CE/OE/WE interface timing compatible with microprocessor buses.
Its sector organization includes one 16 KB boot block (3C000H–3FFFFH), two 8 KB parameter blocks (3A000H–3BFFFH and 38000H–39FFFH), and two main memory blocks (20000H–37FFFH and 00000H–1FFFFH). Boot block lockout-enabled via 6-cycle command sequence-prevents programming under ≤5.5 V, but allows override via 12 V on RESET during erase/program.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (256K × 8), directly addressable as 262,144 bytes |
| Read Access Time | 120 ns - determines maximum bus clock rate for reliable read operations |
| Supply Voltage Range | 2.7 V to 3.6 V - enables direct connection to 3.3 V systems without level shifting |
| Active Current | 25 mA - defines peak power draw during read or program cycles |
| Standby Current | 50 µA CMOS - enables low-power retention in battery-backed or energy-sensitive applications |
| Erase Cycle Time | 10 seconds (max) - sets minimum latency for full-chip or sector-erase operations |
| Byte Programming Time | 30 µs typical - establishes worst-case delay before next memory access can begin |
| Endurance | ≥10,000 program/erase cycles - specifies usable lifetime under repeated firmware updates |
Pinout & Package
AT49BV002T-12TI is packaged in a 32-lead TSOP (Type 1, 8 × 20 mm), compliant with JEDEC MO-153. Pin 1 is A16; pin 9 is NC (not connected) per datasheet Rev. 0982D–FLASH–02/03.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-byte addressing; A17 selects upper/lower half of memory map |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read output |
| OE | Output Enable | Active-low output control; used with CE to prevent bus contention during shared-memory access |
| WE | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per command cycle timing |
| RESET | Reset Input | Active-low reset; applying 12 V enables boot block override during erase/program; not available on N-suffix variants |
| I/O0–I/O7 | Data I/O Bus | Bi-directional 8-bit data path; carries command data, product ID codes, and memory contents |
| VCC | Power Supply | Single 2.7–3.6 V supply; powers core logic, charge pumps, and I/O buffers |
| GND | Ground Reference | Return path for all internal circuits and I/O signaling; requires low-impedance PCB connection |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16 KB protected region (3C000H–3FFFFH); lock enabled via 6-cycle command; prevents accidental overwrite of boot code under ≤5.5 V |
| DATA Polling & Toggle Bit | I/O7 complement indicates programming completion; I/O6 toggling signals active erase/program - enables polling-based firmware update without timers |
| Sector-Erase Architecture | Independent erasure of boot block, two 8 KB parameter blocks, and two main memory blocks - supports modular firmware updates without full-chip erase |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line inhibit (OE low/CE high/WE high blocks writes) |
| 12 V RESET Override | Applying 12 V ±0.5 V to RESET pin during operation bypasses boot block lockout - enables recovery of corrupted boot sectors in field-deployed units |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Loader |
|---|---|
Use Scenario: Storing immutable boot code and updatable application firmware in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing fast 120 ns read access to initialize ARM Cortex-M4 processors during cold start. Use Value: Sector-erase capability isolates parameter updates from boot code, reducing risk of bricking during field firmware upgrades. |
Use Scenario: Securing certified boot firmware in FDA-regulated diagnostic equipment requiring traceable, tamper-resistant startup code. IC Role / Device Role / Timing Role: Trusted boot memory with hardware-enforced write protection on the 16 KB boot block (3C000H–3FFFFH). Use Value: 12 V RESET override enables authorized service technicians to recover corrupted boot sectors without replacing the PCB. |
| Automotive Telematics Module | Energy Meter Firmware Vault |
Use Scenario: Hosting OTA-upgradable firmware in vehicle infotainment gateways exposed to wide temperature swings (−40°C to +85°C). IC Role / Device Role / Timing Role: Industrial-grade Flash memory delivering 50 µA standby current and guaranteed 10,000-cycle endurance across automotive temperature range. Use Value: Low 25 mA active current minimizes thermal load in sealed enclosures; TSOP package supports automated SMT assembly. |
Use Scenario: Storing metrology-critical calibration tables and regulatory-compliant firmware in smart electricity meters deployed for >15-year lifespans. IC Role / Device Role / Timing Role: Long-life nonvolatile memory with CMOS standby current (50 µA) enabling battery-backed operation during mains failure. Use Value: DATA polling eliminates need for external timing components in ultra-low-power meter sleep modes. |
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 access, 3.0–3.6 V, 48-pin TSOP; no boot block lockout; uses different command set | Lacks dedicated boot sector protection and 12 V override; requires firmware redesign for secure boot flow | Choose when faster read speed is critical and boot security is handled externally. |
| MX29LV200CTTI-12G | 2 Mbit, 120 ns access, 2.7–3.6 V, 48-pin TSOP; top-boot configuration (00000H–03FFFH), no RESET override | Boot block resides at lowest address; no hardware mechanism to unlock protected boot sector post-enablement | Choose for cost-sensitive designs where boot block location matches legacy layout and override is unnecessary. |
Compared with SST39VF200A-70-4C-NHE and MX29LV200CTTI-12G, the AT49BV002T-12TI uniquely combines industrial temperature support, top-boot sector placement (3C000H–3FFFFH), and 12 V RESET override-enabling field-recoverable secure boot in long-lifecycle embedded systems.
Availability
AT49BV002T-12TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot loaders, and automotive telematics modules requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for AT49BV002T-12TI 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 products including the AT49BV series. The company specializes in secure, reliable microcontrollers and nonvolatile memory for industrial and automotive markets.
The AT49BV002T-12TI belongs to Atmel's Battery-Voltage™ Flash family, engineered specifically for single-supply in-system reprogrammability in resource-constrained embedded systems requiring robust boot code integrity and field firmware update capability.
FAQ
What is the boot block address range for AT49BV002T-12TI?
The AT49BV002T-12TI features a 16 KB boot block located at address range 3C000H to 3FFFFH - distinct from the base-address boot block (00000H–03FFFH) used in non-T suffix variants. This top-boot configuration isolates startup code from main application memory, reducing corruption risk during partial updates. The AT49BV002T-12TI datasheet confirms this mapping in Section 6, "Notes".
Does AT49BV002T-12TI support 12 V programming override?
Yes, AT49BV002T-12TI 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 - a feature absent in N-suffix variants. This allows authorized recovery of locked boot sectors in deployed systems. The AT49BV002T-12TI datasheet specifies this in the "Boot Block Programming Lockout Override" section.
What package type is used by AT49BV002T-12TI?
AT49BV002T-12TI is supplied in a 32-lead Thin Small Outline Package (TSOP, Type 1, 8 × 20 mm), designated as package code "32T". Pin 9 is not connected (NC), consistent with the AT49BV/LV002(N)(T) family specification. This TSOP variant enables high-density PCB layouts and compatibility with standard surface-mount assembly processes.
How does AT49BV002T-12TI indicate programming completion?
AT49BV002T-12TI provides two hardware status methods: DATA polling (I/O7 returns complement of loaded data until completion, then true data) and Toggle Bit (I/O6 toggles between 0 and 1 during active programming/erasing, then stabilizes). Both mechanisms allow firmware to detect completion without fixed delays - a key design advantage confirmed in the "DATA Polling" and "Toggle Bit" sections of the AT49BV002T-12TI datasheet.
Is AT49BV002T-12TI compatible with standard microprocessor bus timing?
Yes, AT49BV002T-12TI uses industry-standard CE/OE/WE control signaling and complies with common microprocessor read/write timing: CE and OE low + WE high enables read mode; WE low with CE low and OE high initiates write cycles. Its AC characteristics - including tACC = 120 ns, tWP = 90 ns, and tDH = 0 ns - align with 8051, ARM7, and similar controller interfaces as documented in the AT49BV002T-12TI AC Read and Byte Load Waveforms.
AT49BV002T-12TI 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:
- 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-TSOP
AT49BV002T-12TI FAQ
1.How can I place an order for AT49BV002T-12TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV002T-12TI 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 AT49BV002T-12TI reliable?
The price and inventory of AT49BV002T-12TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV002T-12TI is usually 5 days.
3.What payment methods are accepted for AT49BV002T-12TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV002T-12TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV002T-12TI?
AT49BV002T-12TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV002T-12TI 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 AT49BV002T-12TI?
For technical support, including AT49BV002T-12TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV002T-12TI requirements.
6.How does Aetrix verify that AT49BV002T-12TI is sourced from the original manufacturer or authorized distributors?
All AT49BV002T-12TI 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 AT49BV002T-12TI meets industry standards.
7.What is the process for return or replacement of AT49BV002T-12TI?
All AT49BV002T-12TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV002T-12TI, 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 AT49BV002T-12TI part is unused and in its original packaging.
Return procedure for AT49BV002T-12TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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