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Microchip Technology AT49BV1604AT-70TI
- Part No.:
- AT49BV1604AT-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV1604AT-70TI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,980
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Product details
Overview
AT49BV1604AT-70TI from Microchip Technology (formerly Atmel) is a 16-megabit (1M × 16 / 2M × 8) single-supply 3V Flash memory IC with 70 ns access time, sector erase architecture (31 × 64 KB + 8 × 8 KB), dual-plane concurrent read/program-erase capability, and erase suspend/resume functionality. It serves as nonvolatile program/data storage in embedded microcontroller boot loaders and firmware update modules.
For engineers reviewing the AT49BV1604AT-70TI datasheet, AT49BV1604AT-70TI pinout, AT49BV1604AT-70TI application, or AT49BV1604AT-70TI equivalent, key selection criteria include its TSOP-48 package, 2.65–3.3 V operation, 30 mA active current, 128-bit protection register, and top/bottom boot block configuration support.
Technical Context
The AT49BV1604AT-70TI implements a dual-plane memory architecture: Plane A contains eight 4K-word (8KB) and seven 32K-word (64KB) sectors; Plane B contains twenty-four 32K-word (64KB) sectors. This enables concurrent read from one plane while programming or erasing the other - eliminating wait states during firmware updates.
It supports hardware-based data protection via VCC sense (<1.8 V inhibits programming), 10 ms power-on delay, noise filtering (<15 ns pulses ignored), and command-lockout logic. Erase suspend/resume uses dedicated command sequences (B0H for suspend, 30H with plane address for resume), with ≤15 µs suspend latency and full compatibility with RDY/BUSY, Data Polling (I/O7), and Toggle Bit (I/O6/I/O2) status reporting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16-bit or 2,097,152 × 8-bit) |
| Access Time | 70 ns - guarantees deterministic read latency for real-time boot code fetch |
| Supply Voltage | 2.65 V to 3.3 V - compatible with 3.3 V system rails without level shifters |
| Active Current | 30 mA - enables low-power firmware execution in portable industrial controllers |
| Standby Current | 10 µA - supports ultra-low-power sleep modes in battery-backed systems |
| Sector Architecture | 39 sectors: 31 × 64 KB + 8 × 8 KB - allows granular firmware partitioning (e.g., bootloader + application + config) |
| Erase Suspend | Supported - permits interrupting erase to service urgent read requests without data corruption |
Pinout & Package
AT49BV1604AT-70TI is available in a 48-lead Thin Small Outline Package (TSOP Type I, 12 mm × 20 mm, 0.5 mm pitch). Pinout conforms to standard JEDEC MO-141AC, with VCC and GND on opposite edges for noise reduction and thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing; A-1 function on I/O15 in byte mode |
| I/O0–I/O15 | Data I/O (x16) / I/O0–I/O7 + A-1 (x8) | Configurable 16-bit or 8-bit data interface; BYTE pin selects mode |
| CE, OE, WE | Chip Enable, Output Enable, Write Enable | Dual-line control (CE+OE) prevents bus contention; WE initiates command latching |
| RDY/BUSY | Open-drain status output | Active-low signal indicating internal program/erase activity; supports wired-OR multi-device monitoring |
| VPP | Accelerated Program/Erase Supply | Accepts 5.0 V ± 0.5 V or 12.0 V ± 0.5 V to reduce tBP/tSEC; optional - may be unconnected |
| RESET | Hardware initialization input | Forces device into read/standby mode; required to exit Single Pulse Program mode |
| BYTE | Interface mode select | Logic high = x16 word mode (I/O0–I/O15 active); logic low = x8 byte mode (I/O0–I/O7 active, I/O15 = A-1) |
| VCCQ | Output driver supply | Separate 2.65–3.3 V rail for I/O output levels; decoupled from core VCC for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Dual-plane concurrent operation | Enables zero-latency reads during background firmware erase/program - critical for fail-safe OTA updates |
| Erase suspend/resume | Allows interruption of long-sector erase (≤300 ms) to service time-critical reads from other sectors |
| 128-bit protection register | Factory-programmed 64-bit ID + user-programmable 64-bit lockable block - secures bootloader integrity |
| Sector lockdown | Per-sector write-protection activated via six-cycle command - prevents accidental overwrite of boot code |
| Hardware data protection | VCC sense, 10 ms power-up delay, and noise filtering eliminate spurious writes in electrically noisy environments |
Applications
| Industrial PLC Firmware Storage | Automotive ECU Boot Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers with field upgrade capability. IC Role / Device Role / Timing Role: Nonvolatile boot memory holding startup code and runtime application image; accessed at power-on reset and during DFU. Use Value: Sector lockdown protects bootloader from corruption during application updates; 70 ns access ensures deterministic boot timing. | Use Scenario: Holding certified boot code and calibration data in engine control units requiring ASIL-B compliance. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for safety-critical initialization routines and flash-resident diagnostics. Use Value: 128-bit protection register enables cryptographic binding of firmware to hardware; dual-plane operation allows diagnostic reads during reprogramming. |
| Medical Device Configuration Storage | Networking Equipment Image Backup |
Use Scenario: Retaining device-specific calibration parameters and regulatory-compliant operational profiles in portable diagnostic instruments. IC Role / Device Role / Timing Role: Parameter EEPROM replacement with higher density and faster write/erase - used during factory setup and field recalibration. Use Value: 8 KB small sectors enable atomic parameter updates without disturbing adjacent settings; 10 µA standby current extends battery life. | Use Scenario: Maintaining redundant firmware images in enterprise switches/routers to support rollback after failed upgrades. IC Role / Device Role / Timing Role: Secondary boot memory storing backup OS image; accessed only during recovery sequences. Use Value: Erase suspend allows immediate response to network management queries while background image validation runs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF1601C-70-4C-EKE | Same density (16 Mbit), 70 ns access, but single-plane architecture; no erase suspend or dual-plane read-while-write | Lacks concurrent operation - requires full erase wait before read; unsuitable for real-time firmware update scenarios | Select when cost sensitivity outweighs need for background operations and security features |
| MX29LV160DBTI-70G | 16 Mbit, 70 ns, top-boot configuration; supports CFI, but no 128-bit protection register or sector lockdown | No hardware-level sector write lock; relies on software-only protection - less robust against fault injection | Choose for legacy CFI-compliant systems where bootloader security is managed externally |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160DBTI-70G, the AT49BV1604AT-70TI uniquely delivers dual-plane concurrency, hardware-enforced sector lockdown, and a factory-programmed 128-bit ID - making it the only option among the three qualified for safety-critical, field-upgradable embedded systems requiring guaranteed boot integrity.
Availability
AT49BV1604AT-70TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU boot memory, and medical device configuration storage requiring stable component supply across extended product lifecycles.
Supply support for AT49BV1604AT-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
Microchip Technology acquired Atmel in 2016 and maintains full support for legacy Atmel Flash products including the AT49BV/LV series.
The AT49BV1604AT-70TI belongs to Atmel's BV-series 3V Flash memory family, designed specifically for in-system programmable boot code storage in resource-constrained microcontroller-based systems.
FAQ
What is the operating voltage range for the AT49BV1604AT-70TI?
The AT49BV1604AT-70TI operates from 2.65 V to 3.3 V. It supports single-voltage read/write operation within this range, eliminating the need for separate 5 V programming supplies. The VPP pin is optional and can be left unconnected; if used for accelerated programming/erasing, it accepts 5.0 V ± 0.5 V or 12.0 V ± 0.5 V, but the core logic remains powered solely by VCC.
Does the AT49BV1604AT-70TI support concurrent read and program/erase operations?
Yes, the AT49BV1604AT-70TI implements a dual-plane architecture that permits reading from one memory plane while programming or erasing the other. Plane A contains eight 4K-word and seven 32K-word sectors; Plane B contains twenty-four 32K-word sectors. This concurrency eliminates wait states during firmware updates and improves system responsiveness in real-time applications.
How does sector lockdown work on the AT49BV1604AT-70TI?
Sector lockdown on the AT49BV1604AT-70TI is enabled per sector using a six-bus-cycle command (555H, AAH, AAAH, 55H, 555H, 80H, 555H, AAH, AAAH, 55H, SA, 60H). Once activated, the sector becomes read-only - immune to program or erase commands until the next power cycle or RESET assertion. Lockdown status is verified via software product identification mode by reading bit I/O0 at address 00002H within the sector.
What package type is used for the AT49BV1604AT-70TI?
The AT49BV1604AT-70TI is packaged in a 48-lead Thin Small Outline Package (TSOP Type I) compliant with JEDEC MO-141AC. It measures 12 mm × 20 mm with 0.5 mm lead pitch and features gull-wing leads. The "TI" suffix explicitly denotes the industrial temperature grade (–40°C to +85°C) and TSOP packaging - distinct from CBGA variants.
Can the AT49BV1604AT-70TI be used in both byte and word modes?
Yes, the AT49BV1604AT-70TI supports configurable interface modes via the BYTE pin. When BYTE = logic high, it operates in 16-bit word mode with I/O0–I/O15 active. When BYTE = logic low, it operates in 8-bit byte mode: I/O0–I/O7 are active data lines, and I/O15 functions as the LSB address input (A-1). This flexibility allows seamless integration with both 8-bit and 16-bit microcontroller buses.
AT49BV1604AT-70TI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-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:
- 16Mbit
- Memory Organization:
- 2M x 8, 1M x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 50µs
- Access Time:
- 70 ns
- Voltage - Supply:
- 2.65V ~ 3.3V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
AT49BV1604AT-70TI FAQ
1.How can I place an order for AT49BV1604AT-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV1604AT-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 AT49BV1604AT-70TI reliable?
The price and inventory of AT49BV1604AT-70TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV1604AT-70TI is usually 5 days.
3.What payment methods are accepted for AT49BV1604AT-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV1604AT-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV1604AT-70TI?
AT49BV1604AT-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV1604AT-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 AT49BV1604AT-70TI?
For technical support, including AT49BV1604AT-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV1604AT-70TI requirements.
6.How does Aetrix verify that AT49BV1604AT-70TI is sourced from the original manufacturer or authorized distributors?
All AT49BV1604AT-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 AT49BV1604AT-70TI meets industry standards.
7.What is the process for return or replacement of AT49BV1604AT-70TI?
All AT49BV1604AT-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV1604AT-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 AT49BV1604AT-70TI part is unused and in its original packaging.
Return procedure for AT49BV1604AT-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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