My Inquiry
My Account
Microchip Technology AT49BV002A-70TI
- Part No.:
- AT49BV002A-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV002A-70TI.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,776
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT49BV002A-70TI 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 architecture (16K-byte boot block + two 8K-byte parameter blocks + four main memory 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 AT49BV002A-70TI datasheet, AT49BV002A-70TI pinout, AT49BV002A-70TI application, or AT49BV002A-70TI equivalent, this page delivers verified electrical specs, TSOP-32 package layout, boot-block lockout behavior, DATA polling/toggle-bit status detection, and real-world use cases in industrial control and legacy system upgrades.
Technical Context
The AT49BV002A-70TI implements a standard parallel Flash interface with CE/OE/WE control logic, supporting EPROM-like read timing and command-based erase/program operations. Its internal program controller manages sector erase (4 s max) and byte programming without external high-voltage circuitry.
It features dual-mode boot block protection: software lockout (enabled via 6-cycle command sequence) and hardware override (12 V on RESET pin), with distinct address mapping-boot block at 3C000H–3FFFFH for the "T" variant. The device uses Battery-Voltage™ CMOS technology for low-power operation (15 mA active, 50 µA standby).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (262,144 × 8), organized as 256K words × 8 bits - directly replaces EPROMs in 8-bit bus systems. |
| Read Access Time | 70 ns - meets timing requirements for 14 MHz bus interfaces without wait states. |
| Supply Voltage | 2.7 V to 3.6 V - enables single-supply operation from Li-ion or regulated 3.3 V rails, eliminating 5 V support circuitry. |
| Erase Cycle Time | 4 seconds (max) for full chip or sector - enables field firmware updates with predictable latency. |
| Programming Speed | 30 µs/byte typical - allows rapid patching of small code segments without blocking system execution. |
| 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 - supports long-term field maintenance of configuration or calibration data. |
Pinout & Package
AT49BV002A-70TI is packaged 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 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 families; supports true read/write data flow. |
| CE | Chip Enable | Active-low chip select; when high, places outputs in high-impedance state to prevent bus contention. |
| OE | Output Enable | Active-low output gate; used with CE to implement dual-line read control per EPROM convention. |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and byte programming. |
| RESET* | Reset Input | Active-low reset; applying 12 V ±0.5 V overrides boot block lockout - unique to "T" variant (not available on "N" variants). |
| VCC | Power Supply | 2.7–3.6 V supply; internal voltage sensing disables programming if VCC < 1.8 V (typical). |
| GND | Ground Reference | Signal and power ground reference for all inputs, outputs, and internal logic. |
Key Features
| Feature | Design Value |
|---|---|
| Sector Architecture with Boot Block Lockout | 16K-byte boot block (3C000H–3FFFFH) can be permanently locked via command sequence, protecting bootloader code from accidental overwrite. |
| Hardware Boot Override | 12 V applied to RESET pin during erase/program bypasses boot lockout - enables secure field recovery without hardware redesign. |
| Zero External High-Voltage Requirement | All commands executed using standard 2.7–3.6 V levels; eliminates need for charge pumps or external 12 V generators. |
| Robust Data Protection | Triple-layer hardware safeguard: 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). |
| Industry-Temperature Operation | Rated for –40°C to +85°C case temperature - qualified for deployment in industrial PLCs, motor drives, and outdoor telemetry units. |
Applications
| Industrial Control Firmware Storage | Legacy System EPROM Replacement |
|---|---|
Use Scenario: Storing firmware for programmable logic controllers (PLCs) that require field-upgradable ladder logic and I/O configuration. IC Role / Device Role / Timing Role: Nonvolatile program memory mapped into microcontroller address space; accessed via parallel bus with 70 ns read timing. Use Value: Enables in-system reprogramming without removing the device, reducing downtime during firmware patches and compliance updates. |
Use Scenario: Replacing obsolete 27C020 EPROMs in aging test equipment where UV erasure is impractical and socket compatibility is required. IC Role / Device Role / Timing Role: Drop-in parallel Flash replacement with identical pinout (TSOP-32), same address/data bus, and EPROM-compatible read protocol. Use Value: Eliminates UV erasers and programmers; supports modern in-circuit programming via JTAG or ISP adapters with minimal board modification. |
| Secure Bootloader Storage | Parameter & Calibration Data Retention |
Use Scenario: Holding immutable bootloader code in medical diagnostic instruments where regulatory validation prohibits runtime modification of startup routines. IC Role / Device Role / Timing Role: Dedicated boot block (3C000H–3FFFFH) isolated from main memory; protected by hardware lockout and 12 V override for certified recovery. Use Value: Meets IEC 62304 safety requirements by preventing unauthorized or corrupted bootloader updates while retaining field-serviceability. |
Use Scenario: Storing sensor calibration coefficients and operational parameters in HVAC controllers subject to frequent power cycling and temperature drift. IC Role / Device Role / Timing Role: Parameter blocks (two 8K-byte sections) provide dedicated, wear-leveled zones for infrequently updated data. Use Value: Extends effective endurance beyond 10,000 cycles by isolating calibration writes from firmware updates, ensuring long-term accuracy. |
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 (512K × 8), 70 ns access, 3.0–3.6 V supply; lacks boot block lockout and 12 V RESET override. | Higher capacity suits larger firmware images but requires modified address decoding; no hardware-secured boot region. | Select when >2 Mbit storage is needed and boot security is managed externally via MCU firmware. |
| MX29LV200CTTI-70G | 2 Mbit (256K × 8), 70 ns, 3.0–3.6 V; includes CFI query support and top/bottom boot sectors, but no 12 V override capability. | CFI compatibility simplifies auto-detection in generic flash programmers; boot sector layout differs (top vs. bottom), requiring linker script adjustment. | Prefer for new designs requiring standardized flash interface layers (e.g., U-Boot, RTOS flash drivers) and vendor-agnostic toolchains. |
Compared with SST39VF200A-70-4C-NHE and MX29LV200CTTI-70G, the AT49BV002A-70TI uniquely combines verified boot-block lockout with 12 V hardware override in a TSOP-32 package - critical for safety-certified legacy upgrades where both immutability and field-recoverability are mandated.
Availability
AT49BV002A-70TI is available at Aetrix Electronics and suitable for industrial control firmware storage, legacy EPROM replacement, secure bootloader deployment, and parameter/calibration data retention requiring stable component supply over extended production lifecycles.
Supply support for AT49BV002A-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 devices.
The AT49BV002A-70TI belongs to Atmel's Battery-Voltage™ Flash memory product line, designed specifically for single-supply, in-system reprogrammable storage in battery-powered and low-voltage embedded systems.
FAQ
What is the boot block address range for AT49BV002A-70TI?
The AT49BV002A-70TI boot block occupies address range 3C000H to 3FFFFH (16 KB), distinct from the base AT49BV002A(N) variant which uses 00000H–03FFFH. This relocation supports top-boot architecture for systems requiring reset vector execution from highest memory addresses. The AT49BV002A-70TI datasheet confirms this mapping in Section 6, "Command Definition" notes.
Does AT49BV002A-70TI support 5 V-only programming commands?
No. The AT49BV002A-70TI operates exclusively at 2.7–3.6 V and uses standard TTL-level command sequences (e.g., 555H/AAH, AAH/55H) - no 5 V signals are required or permitted. Programming is internally generated; external 5 V is neither supplied nor tolerated on any pin except RESET (12 V override only). This is explicitly stated in the "Description" section and "Absolute Maximum Ratings" table of the AT49BV002A-70TI datasheet.
How does hardware boot block lockout override work on AT49BV002A-70TI?
Applying 12.0 V ±0.5 V to the RESET pin during chip erase, sector erase, or byte programming temporarily disables the boot block lockout feature, allowing reprogramming of the 3C000H–3FFFFH region. Once RESET returns to TTL levels, lockout re-engages. This capability is exclusive to the "T" suffix variant and is documented in the "Boot Block Programming Lockout Override" section of the AT49BV002A-70TI datasheet.
Is pin 9 on AT49BV002A-70TI functional or no-connect?
Pin 9 on the AT49BV002A-70TI (TSOP-32 package) is a no-connect (NC), as confirmed in the "Note" under "Pin Configurations" and reiterated in the "Ordering Information" table of the AT49BV002A-70TI datasheet. It must remain unconnected in PCB layout; routing or tying it to any voltage violates the device specification and may impair reliability.
What are the valid operating temperature and supply ranges for AT49BV002A-70TI?
The AT49BV002A-70TI is rated for industrial temperature operation from –40°C to +85°C (case temperature), with a supply voltage range of 2.7 V to 3.6 V. These values are specified in the "DC and AC Operating Range" table (page 7) and "Ordering Information" section of the AT49BV002A-70TI datasheet. Operation outside these limits voids parametric guarantees and risks data corruption.
AT49BV002A-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
AT49BV002A-70TI FAQ
1.How can I place an order for AT49BV002A-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV002A-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 AT49BV002A-70TI reliable?
The price and inventory of AT49BV002A-70TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV002A-70TI is usually 5 days.
3.What payment methods are accepted for AT49BV002A-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV002A-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV002A-70TI?
AT49BV002A-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV002A-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 AT49BV002A-70TI?
For technical support, including AT49BV002A-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV002A-70TI requirements.
6.How does Aetrix verify that AT49BV002A-70TI is sourced from the original manufacturer or authorized distributors?
All AT49BV002A-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 AT49BV002A-70TI meets industry standards.
7.What is the process for return or replacement of AT49BV002A-70TI?
All AT49BV002A-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV002A-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 AT49BV002A-70TI part is unused and in its original packaging.
Return procedure for AT49BV002A-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV002A-70TI 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…
