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Microchip Technology AT49BV1614-90TI
- Part No.:
- AT49BV1614-90TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV1614-90TI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,337
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Product details
Overview
AT49BV1614-90TI from Atmel is a 16-Mbit (1M × 16 / 2M × 8) 2.7–3.6 V Flash memory IC with 90 ns access time, dual-plane architecture enabling concurrent read-while-program/erase, and sector erase capability across 40 independently lockable sectors. It supports in-system programming and operates across –40°C to +85°C for industrial applications including embedded boot code storage and firmware updates.
For engineers reviewing the AT49BV1614-90TI datasheet, AT49BV1614-90TI pinout, AT49BV1614-90TI application, or AT49BV1614-90TI equivalent, key selection considerations include its bottom/top boot block configuration, erase suspend/resume functionality, VPP-assisted fast programming, READY/BUSY signaling, and TSOP-48 package compatibility with legacy board layouts.
Technical Context
The AT49BV1614-90TI implements a dual-plane memory architecture: Plane A contains eight 4K-word, two 16K-word, and six 32K-word sectors; Plane B contains twenty-four 32K-word sectors. This enables simultaneous read from one plane while programming or erasing the other - eliminating wait states during firmware updates.
It features hardware-based sector lockout with 12V RESET override, six-byte command sequences for chip/sector erase and bypass unlock, and three end-of-operation detection methods: RDY/BUSY pin, DATA polling (I/O7), and toggle bit (I/O6/I/O2). The BYTE pin selects x8 or x16 data bus width, and VPP is optional for faster program/erase at lower VCC.
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 | 90 ns - guarantees deterministic read latency for real-time boot and firmware fetch |
| Supply Voltage | 2.7 V to 3.6 V - single-supply operation compatible with 3.3 V system rails |
| Program Time | 20 µs per word - enables rapid field firmware patching without external high-voltage circuitry |
| Sector Erase Time | 200 ms per sector - predictable timing for background update routines |
| Standby Current | 10 µA - ultra-low power retention for battery-backed or energy-sensitive systems |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded control and automotive body electronics |
Pinout & Package
AT49BV1614-90TI is packaged in a 48-lead Thin Small Outline Package (TSOP Type 1), pin-compatible with industry-standard 48T footprint. Pin functions are electrically defined and validated per Atmel's official datasheet Rev. 0925B–05/98.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing; A-1 multiplexed 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; I/O15 serves as LSB address input in byte mode |
| CE, OE, WE | Chip Enable, Output Enable, Write Enable | Three independent control lines prevent bus contention; standard microprocessor timing compliance |
| BYTE | Bus Width Select | Logic high = x16 mode (I/O0–I/O15 active); logic low = x8 mode (I/O0–I/O7 active, I/O15 = A-1) |
| RDY/BUSY | Open-drain status output | Active-low signal indicates ongoing program/erase; supports wired-OR for multi-device monitoring |
| VPP | Optional programming voltage | 5.0 V ±10% input accelerates program/erase; unused pin must be tied to VCC or GND |
| RESET | Hardware initialization & lockout override | Pulsing low resets device; 12V ±0.5V applied to override sector lockout for secure reprogramming |
Key Features
| Feature | Design Value |
|---|---|
| Dual-plane concurrent operation | Enables uninterrupted code execution from one memory plane while updating firmware in the other - critical for fail-safe OTA updates |
| Erase suspend/resume | Halts active sector erase to service urgent read/program requests in non-suspended sectors - improves real-time responsiveness |
| Individual sector write lockout | 32K/16K/4K sectors can be permanently protected against accidental overwrite - secures bootloader and calibration data |
| Bypass unlock command | Six-byte sequence eliminates repeated 3-byte programming commands - reduces software overhead and flash wear |
| Triple end-of-operation detection | RDY/BUSY pin, DATA polling (I/O7), and toggle bit (I/O6/I/O2) provide redundant, software- or hardware-driven completion signaling |
Applications
| Industrial PLC Firmware Storage | Automotive Body Control Module Boot Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers with zero downtime requirements. IC Role / Device Role / Timing Role: Nonvolatile boot and application code storage with concurrent read-while-erase capability. Use Value: Dual-plane architecture allows runtime firmware validation and swap without halting I/O scanning - meeting SIL-2 functional safety timing constraints. | Use Scenario: Hosting boot code and configurable parameter tables in vehicle door modules, seat controllers, and lighting ECUs. IC Role / Device Role / Timing Role: Secure, temperature-hardened Flash memory for cold-start execution and over-the-air calibration updates. Use Value: Sector lockout prevents corruption of safety-critical boot code; –40°C to +85°C rating ensures reliable startup in extreme ambient conditions. |
| Medical Diagnostic Equipment Configuration | Network Router Embedded Image Storage |
Use Scenario: Retaining device-specific calibration coefficients, sensor profiles, and regulatory-compliant audit logs in portable ultrasound and ECG units. IC Role / Device Role / Timing Role: High-reliability, low-power Flash for infrequently updated but mission-critical configuration data. Use Value: 10 µA standby current extends battery life; erase suspend allows immediate response to user-triggered recalibration without waiting for background erase. | Use Scenario: Storing primary and fallback firmware images in enterprise-grade routers requiring hot-failover capability. IC Role / Device Role / Timing Role: Dual-image Flash memory supporting atomic firmware swaps and rollback recovery. Use Value: Bottom/top boot block configuration isolates bootloader in protected sectors; 90 ns access time ensures fast image verification and decompression startup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF1601C-90-4C-EKE | 48-pin TSOP, 16 Mbit, 90 ns, 3.0–3.6 V; lacks dual-plane and erase suspend | No concurrent read-while-erase; requires full wait-state blocking during updates | Select when cost sensitivity outweighs real-time update requirements and dual-plane is unnecessary |
| MX29LV160DBTI-90G | 48-pin TSOP, 16 Mbit, 90 ns, 2.7–3.6 V; top-boot only, no VPP pin | Fixed boot sector layout; no optional 5 V programming acceleration | Choose for simplified supply design where VPP circuitry adds complexity or board space constraints exist |
Compared with SST39VF1601C-90-4C-EKE and MX29LV160DBTI-90G, the AT49BV1614-90TI uniquely delivers concurrent dual-plane operation and erase suspend - enabling deterministic firmware update latency in hard real-time systems without sacrificing industrial temperature range or sector-level security.
Availability
AT49BV1614-90TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive body control module boot memory, and medical diagnostic equipment configuration requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT49BV1614-90TI 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 fabless semiconductor company specializing in microcontrollers, Flash memory, and secure authentication ICs for industrial, automotive, and consumer applications.
The AT49BV16X4(T) product line was designed for robust, in-system programmable Flash memory in resource-constrained embedded systems requiring secure boot, field-upgradable firmware, and operation across extended industrial temperatures.
FAQ
What is the operating temperature range for the AT49BV1614-90TI?
The AT49BV1614-90TI is rated for industrial operation from –40°C to +85°C. This specification is confirmed in the Ordering Information table (page 17) and DC/AC Operating Range section (page 11) of the official datasheet Rev. 0925B–05/98. Its qualification covers full functionality - including read, program, and erase operations - across this entire range without derating.
Does the AT49BV1614-90TI support both top-boot and bottom-boot configurations?
Yes, the AT49BV1614-90TI supports both top-boot and bottom-boot sector arrangements. Memory Plane A and Plane B sector maps are explicitly defined for both configurations across pages 7–10 of the datasheet. Boot mode is determined by factory configuration - not user-selectable - and the specific variant (e.g., AT49BV1614 vs. AT49BV1614T) indicates the boot layout.
Can the AT49BV1614-90TI perform reads while erasing or programming?
Yes, the AT49BV1614-90TI supports true concurrent read-while-program/erase via its dual-plane architecture. Reads from Plane B may occur during program/erase in Plane A, and vice versa. This is documented in the Description (page 1), Technical Context (page 2), and Block Diagram (page 3) - eliminating system stalls during firmware updates.
What is the purpose of the VPP pin on the AT49BV1614-90TI?
The VPP pin on the AT49BV1614-90TI accepts 5.0 V ±10% to accelerate program and erase operations at lower VCC levels. It is optional: if unused, it must be tied to VCC or GND. Its function and timing are specified in the Features section (page 1) and AC Characteristics (page 14), and it does not affect core functionality when left unconnected.
How is sector protection implemented and overridden on the AT49BV1614-90TI?
Sector protection on the AT49BV1614-90TI is implemented via a six-command lockout sequence per sector, preventing writes/erases using standard 3.3 V logic. Override requires applying 12.0 V ±0.5 V to the RESET pin - a hardware-controlled mechanism documented in the RESET and Sector Programming Lockout Override sections (pages 4 and 6). This ensures secure, tamper-resistant boot code integrity.
AT49BV1614-90TI 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:
- 90 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
AT49BV1614-90TI FAQ
1.How can I place an order for AT49BV1614-90TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV1614-90TI 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 AT49BV1614-90TI reliable?
The price and inventory of AT49BV1614-90TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV1614-90TI is usually 5 days.
3.What payment methods are accepted for AT49BV1614-90TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV1614-90TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV1614-90TI?
AT49BV1614-90TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV1614-90TI 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 AT49BV1614-90TI?
For technical support, including AT49BV1614-90TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV1614-90TI requirements.
6.How does Aetrix verify that AT49BV1614-90TI is sourced from the original manufacturer or authorized distributors?
All AT49BV1614-90TI 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 AT49BV1614-90TI meets industry standards.
7.What is the process for return or replacement of AT49BV1614-90TI?
All AT49BV1614-90TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV1614-90TI, 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 AT49BV1614-90TI part is unused and in its original packaging.
Return procedure for AT49BV1614-90TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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