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Microchip Technology AT49BV002ANT-70TI
- Part No.:
- AT49BV002ANT-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV002ANT-70TI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT49BV002ANT-70TI 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 industrial temperature range (−40°C to +85°C). It features sector-based architecture including one 16 KB boot block (address 3C000H–3FFFFH), two 8 KB parameter blocks, and four main memory blocks (32 KB + 3×64 KB), used for firmware storage and secure boot code retention in embedded controllers.
For engineers reviewing the AT49BV002ANT-70TI datasheet, AT49BV002ANT-70TI pinout, AT49BV002ANT-70TI application, or AT49BV002ANT-70TI equivalent, key selection criteria include boot-block lockout capability, 30 µs/byte programming time, hardware data protection (VCC sense, noise filter), DATA polling/Toggle Bit erase-program status detection, and TSOP-32 package compatibility with legacy 8-bit microcontroller buses.
Technical Context
The AT49BV002ANT-70TI implements a standard parallel Flash interface with CE/OE/WE control logic and supports EPROM-like read operation timing. Its internal command register executes software-controlled erase and program functions without external high-voltage circuitry, using five-volt-compatible command sequences on standard TTL/CMOS levels.
It integrates hardware data protection (VCC sense <1.8 V inhibits programming, noise filtering for <15 ns pulses), DATA polling on I/O7, and Toggle Bit detection on I/O6 to monitor byte-program and sector-erase completion. The boot block lockout feature-enabled via six-cycle command sequence-permits permanent write protection of secure startup code at 3C000H–3FFFFH when activated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Capacity | 2 Mbit (256K × 8), organized for direct 8-bit microprocessor bus interfacing without address translation. |
| Read Access Time | 70 ns - enables real-time instruction fetch from 14 MHz system clocks without wait states. |
| Supply Voltage | 2.7 V–3.6 V - supports battery-powered and low-voltage industrial systems without level-shifting. |
| Byte Programming Time | 30 µs typical - allows rapid field firmware updates with minimal host CPU intervention per byte. |
| Erase Cycle Time | 4 seconds max chip erase - enables full reprogramming within sub-5-second maintenance windows. |
| End-of-Operation Detection | DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling) - eliminates need for fixed delay timers in host firmware. |
| Write Endurance | 10,000 program/erase cycles - validated for long-life embedded applications with periodic firmware upgrades. |
| Standby Current | 50 µA CMOS - reduces power budget in always-on monitoring or sleep-mode systems. |
Pinout & Package
AT49BV002ANT-70TI is supplied in a 32-lead Thin Small Outline Package (TSOP, Type I, 8 × 20 mm), compliant with JEDEC MO-142 BD. Pin 1 is marked by a notch or beveled corner; pin 9 is no-connect (NC) 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 | Bi-directional Data Bus | 8-bit parallel interface compatible with 8051, Z80, and 68K-family microcontrollers; supports read, program, and identification modes. |
| 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 bus. |
| OE | Output Enable | Active-low output gate; used with CE to prevent bus contention during multi-device reads; high disables outputs to high-Z. |
| WE | Write Enable | Active-low write strobe; latches address/data during command entry, byte programming, and erase initiation. |
| RESET* | Reset Input | Active-low reset; halts ongoing operations and forces high-Z outputs; 12 V override enables boot block reprogramming (not available on AN variant). |
| VCC | Power Supply | +2.7 V to +3.6 V supply; internal regulation ensures stable core voltage across operating range. |
| GND | Ground Reference | Signal and power ground reference for all I/O and internal logic; decoupling required per datasheet layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16 KB protected region (3C000H–3FFFFH) prevents accidental overwrite of secure boot code; enabled via 6-cycle command sequence. |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulse rejection), and triple-control inhibit (OE low / CE high / WE high) prevent spurious writes. |
| Sector Erase Flexibility | Independent erasure of two 8 KB parameter blocks and four main memory blocks (32 KB + 3×64 KB) enables granular firmware updates without full-chip erase. |
| Software Product Identification | Manufacturer code 1FH and device code 08H readable via 3-cycle software entry (555H/AAH → AAH/55H → 555H/90H) for automated BOM verification. |
| TSOP-32 Industrial Packaging | 32T package (8 × 20 mm) supports surface-mount assembly, thermal performance up to +85°C case, and drop-in replacement for legacy 27Cxxx EPROM footprints. |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
|
Use Scenario: Storing firmware and configuration data in programmable logic controllers deployed in factory automation environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Nonvolatile program memory mapped to microcontroller address space; provides deterministic 70 ns instruction fetch timing during runtime and safe in-system reprogramming during maintenance. Use Value: Boot block lockout ensures bootloader integrity across 10,000+ field updates; 50 µA standby current extends uptime in battery-backed backup modules. |
Use Scenario: Securing boot firmware and regulatory-compliant calibration tables in portable diagnostic equipment requiring FDA-grade data integrity. IC Role / Device Role / Timing Role: Trusted boot memory with hardware-enforced write protection; operates reliably over −40°C to +85°C without derating. Use Value: 12 V RESET override allows authorized service personnel to recover corrupted boot sectors without board removal; DATA polling eliminates timeout-based programming delays. |
| Automotive Body Control Module | Legacy Industrial HMI Display |
|
Use Scenario: Holding vehicle-specific configuration parameters and low-level driver code in body control units exposed to automotive-grade thermal and EMI stress. IC Role / Device Role / Timing Role: Parallel Flash memory interfaced to 8-bit MCU; withstands 12 V transients on RESET line for emergency reflash under fault conditions. Use Value: Hardware VCC sense prevents inadvertent writes during brown-out events; sector erase enables OTA update of lighting or door-lock logic without resetting entire module. |
Use Scenario: Replacing obsolete 27C256 EPROMs in human-machine interface panels with aging 8-bit controller designs. IC Role / Device Role / Timing Role: Pin-compatible Flash upgrade offering same 32-pin TSOP footprint and identical CE/OE/WE timing, enabling drop-in replacement without PCB revision. Use Value: 2.7 V minimum supply allows operation from degraded 3.3 V rails; 30 µs/byte programming accelerates factory calibration data loading versus EPROM UV-erasure cycles. |
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, 3.0–3.6 V supply; supports both byte and word programming; lacks dedicated boot block lockout. | No hardware-enforced boot sector protection; requires software-managed write disable for secure code regions. | Preferred where word programming efficiency outweighs boot security requirements; not suitable for certified bootloader implementations. |
| MX29LV200CBTI-70G | 2 Mbit, 70 ns, 3.0–3.6 V; includes CFI query support and 16 KB boot sector with write protection, but uses different command set and timing. | CFI compliance simplifies auto-detection in generic flash programmers; boot protection implemented via status register, not command-sequence lockout. | Recommended for new designs needing standardized flash interfaces; requires firmware adaptation for command compatibility. |
Compared with SST39VF200A-70-4C-NHE and MX29LV200CBTI-70G, the AT49BV002ANT-70TI delivers unique hardware-based boot block lockout via deterministic command sequence and 12 V RESET override-critical for safety-critical firmware recovery-while maintaining strict TSOP-32 pinout and timing compatibility with legacy 8-bit systems.
Availability
AT49BV002ANT-70TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code retention, automotive body control modules, and legacy industrial HMI display upgrades requiring stable component supply and long-term lifecycle support.
Supply support for AT49BV002ANT-70TI 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, nonvolatile memory, and secure authentication solutions for industrial, automotive, and consumer applications.
The AT49BV002A(N)(T) series was designed as a low-voltage, in-system reprogrammable Flash memory family targeting 8-bit embedded systems requiring secure boot code storage, field-upgradable firmware, and robust operation across extended industrial temperatures.
FAQ
What is the boot block address range for AT49BV002ANT-70TI?
The AT49BV002ANT-70TI has its 16 KB boot block located at address range 3C000H to 3FFFFH, distinct from the base AT49BV002A(N) variant which places it at 00000H–03FFFH. This relocation supports memory-mapped boot execution in systems with higher base address requirements. The AT49BV002ANT-70TI datasheet confirms this mapping in Section 6, "Boot Block Programming Lockout".
Does AT49BV002ANT-70TI support 12 V RESET override for boot block reprogramming?
Yes, AT49BV002ANT-70TI supports 12 V ± 0.5 V applied to the RESET pin during chip erase, sector erase, or byte programming to override the boot block lockout feature. This capability is explicitly documented in the "Boot Block Programming Lockout Override" section and is unavailable on the AT49BV002AN(T) variant. The AT49BV002ANT-70TI datasheet specifies VH = 12.0 V ± 0.5 V in Note 3 of the Absolute Maximum Ratings table.
What package type is used for AT49BV002ANT-70TI?
AT49BV002ANT-70TI is packaged in a 32-lead Thin Small Outline Package (TSOP, Type I), designated as package code 32T per Atmel's ordering information table. Its dimensions are 8 mm × 20 mm, compliant with JEDEC MO-142 BD, and pin 9 is a no-connect (NC) as confirmed in the "Pin Configurations" section of the AT49BV002A(N)(T) datasheet Rev. 3353D.
How does AT49BV002ANT-70TI detect end-of-program without polling fixed delays?
AT49BV002ANT-70TI provides two hardware-assisted methods: DATA polling (reading the programmed byte returns its complement on I/O7 until completion) and Toggle Bit detection (I/O6 toggles during active programming and stabilizes upon completion). Both are usable at any point during the cycle and eliminate reliance on worst-case tBP timing. These mechanisms are defined in Sections 5 and 12 of the AT49BV002ANT-70TI datasheet.
Is AT49BV002ANT-70TI compatible with standard 5 V microprocessor buses?
AT49BV002ANT-70TI operates exclusively from a 2.7 V–3.6 V supply and uses 5 V–compatible command sequences-but its I/O pins are not 5 V tolerant. Direct connection to 5 V buses requires level-shifting circuitry. The AT49BV002ANT-70TI datasheet specifies VIH = 2.0 V and VIL = 0.6 V, confirming TTL/CMOS compatibility only within its 3.3 V domain, not native 5 V interfacing.
AT49BV002ANT-70TI 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:
- 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-TSOP
AT49BV002ANT-70TI FAQ
1.How can I place an order for AT49BV002ANT-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV002ANT-70TI 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-70TI reliable?
The price and inventory of AT49BV002ANT-70TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV002ANT-70TI is usually 5 days.
3.What payment methods are accepted for AT49BV002ANT-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV002ANT-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV002ANT-70TI?
AT49BV002ANT-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV002ANT-70TI 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-70TI?
For technical support, including AT49BV002ANT-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV002ANT-70TI requirements.
6.How does Aetrix verify that AT49BV002ANT-70TI is sourced from the original manufacturer or authorized distributors?
All AT49BV002ANT-70TI 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-70TI meets industry standards.
7.What is the process for return or replacement of AT49BV002ANT-70TI?
All AT49BV002ANT-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV002ANT-70TI, 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-70TI part is unused and in its original packaging.
Return procedure for AT49BV002ANT-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV002ANT-70TI Tags
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