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Microchip Technology AT49BV1604A-90TI
- Part No.:
- AT49BV1604A-90TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV1604A-90TI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,775
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Product details
Overview
AT49BV1604A-90TI from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) single-supply 3V Flash memory IC with dual-plane architecture, 70 ns access time, and sector erase capability. It supports concurrent read-while-program/erase operations and is designed for embedded boot code storage in industrial microcontroller systems requiring in-system reprogrammability.
For engineers reviewing the AT49BV1604A-90TI datasheet, AT49BV1604A-90TI pinout, AT49BV1604A-90TI application, or AT49BV1604A-90TI equivalent, key selection criteria include its 2.65–3.3V VCC operation, TSOP-48 package, sector lockdown security, erase suspend functionality, and compatibility with x16/x8 data bus configurations in boot memory subsystems.
Technical Context
The AT49BV1604A-90TI implements a dual-plane Flash architecture-Plane A contains eight 4K-word and seven 32K-word sectors; Plane B contains twenty-four 32K-word sectors-enabling simultaneous read from one plane while programming or erasing the other. Its command-based interface uses six-byte sequences for chip/sector erase and lockdown, with hardware reset and RDY/BUSY signaling for cycle management.
It features three distinct power modes: active read (30 mA), standby (10 µA), and accelerated program/erase via VPP at 5V ±0.5V or 12V ±0.5V. Data integrity is enforced by hardware protection (VCC sense, noise filtering), 128-bit user-programmable protection register (with lockable Block B), and sector-level write lockout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16 or 2,097,152 × 8) |
| Access Time | 90 ns max - defines maximum address-to-output delay under 3.3V VCC, critical for timing-critical boot ROM interfaces |
| VCC Range | 2.65V to 3.3V - enables direct integration with 3V logic families without level shifting |
| Sector Architecture | 39 sectors: 31 × 64KB + 8 × 8KB - supports granular firmware updates and secure boot partitioning |
| Program Time | 20 µs per word - enables fast field firmware patching without system downtime |
| Erase Time | 300 ms per sector - balances speed and endurance for infrequent but reliable reprogramming |
| Standby Current | 10 µA - minimizes power draw during system sleep states in battery-backed applications |
Pinout & Package
AT49BV1604A-90TI is available in a 48-lead Thin Small Outline Package (TSOP Type I, 12 × 20 mm), pin-compatible with industry-standard Flash memory footprints. The device operates exclusively in word mode (x16) - I/O0–I/O15 are active; BYTE pin is not functional on this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing; A-1 function unused in word mode |
| I/O0–I/O15 | Data I/O (x16) | 16-bit bidirectional data path; no byte-mode support on AT49BV1604A-90TI |
| CE | Chip Enable | Active-low chip select; required low with OE low for valid read access; prevents bus contention |
| OE | Output Enable | Active-low output control; used with CE to gate data output without affecting internal state |
| WE | Write Enable | Active-low control for command latching and programming; rising edge latches data in command sequences |
| RDY/BUSY | Open-drain Status Output | Actively pulled low during program/erase; supports wired-OR connection for multi-device status monitoring |
| VPP | Accelerated Program/Erase Supply | Accepts 5V ±0.5V or 12V ±0.5V to reduce program/erase times; left unconnected for standard VCC-only operation |
| RESET | Hardware Initialization | Active-low signal halts ongoing operations and forces high-impedance outputs; required for safe command abort or recovery |
| VCCQ | Output Driver Power | Tied to VCC for 3.3V output levels; ensures VOH ≥ VCC − 0.2V for clean TTL/CMOS interfacing |
Key Features
| Feature | Design Value |
|---|---|
| Dual-plane concurrent operation | Enables real-time read access to one memory plane while programming/erasing the other - eliminates boot latency during firmware update |
| Erase suspend/resume | Allows interruption of sector erase to service urgent read/program requests within same plane - improves system responsiveness without compromising flash endurance |
| Sector lockdown | Per-sector write protection activated via command sequence - secures boot loader or calibration data against accidental overwrite |
| 128-bit protection register | Factory-programmed 64-bit Block A + user-programmable/lockable 64-bit Block B - supports cryptographic key storage and device identity binding |
| Hardware data protection | VCC sense, 10 ms power-on delay, noise filtering (<15 ns), and control-line inhibit - prevents spurious writes during power transients or EMI events |
Applications
| Industrial PLC Boot Memory | Medical Device Firmware Storage |
|---|---|
Use Scenario: Storing boot code and configuration parameters in programmable logic controllers operating in harsh factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Non-volatile boot ROM providing deterministic startup sequence and fail-safe recovery image. Use Value: 90 ns access time ensures rapid processor initialization; sector lockdown prevents corruption of safety-critical boot firmware during field updates. | Use Scenario: Holding certified firmware images and calibration tables in portable diagnostic equipment requiring regulatory traceability and data integrity. IC Role / Device Role / Timing Role: Secure, reprogrammable firmware storage with tamper-resistant sector protection and hardware reset recovery. Use Value: 128-bit protection register enables unique device identification; erase suspend allows background firmware validation without interrupting patient monitoring. |
| Automotive Body Control Module | Network Edge Router Configuration |
Use Scenario: Hosting bootloader and feature-enabling code in automotive BCMs where over-the-air (OTA) updates must coexist with real-time CAN messaging. IC Role / Device Role / Timing Role: Dual-plane Flash memory enabling concurrent OTA download (to one plane) and live execution (from the other). Use Value: Concurrent read-while-erase eliminates system freeze during firmware upgrade; -40°C to +85°C rating meets automotive AEC-Q100 ambient requirements. | Use Scenario: Storing boot images, routing tables, and security certificates in enterprise-grade edge routers deployed in temperature-controlled data closets. IC Role / Device Role / Timing Role: High-reliability, in-system programmable Flash for field-upgradable network stack components. Use Value: 10 µA standby current extends uptime during maintenance windows; RDY/BUSY pin simplifies host MCU polling for update completion. |
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-EQE | Same density (16 Mbit), 90 ns access, 2.7–3.6V VCC, TSOP-48, but lacks dual-plane and erase suspend | No concurrent read-while-erase; requires full system stall during firmware update | Select when cost sensitivity outweighs need for real-time update capability |
| MX29LV160DBTI-90G | 16 Mbit, 90 ns, 2.7–3.6V, TSOP-48, top-boot configuration, supports CFI command set | CFI-compliant interface simplifies driver porting; no 128-bit protection register or sector lockdown | Prefer for legacy BIOS/UEFI platforms requiring standardized Flash command sets |
Compared with SST39VF1601C-90-4C-EQE and MX29LV160DBTI-90G, the AT49BV1604A-90TI uniquely delivers dual-plane concurrency and hardware-enforced sector lockdown - essential for safety-critical or real-time embedded systems where firmware integrity and zero-downtime updates are mandatory.
Availability
AT49BV1604A-90TI is available at Aetrix Electronics and suitable for industrial control, medical diagnostics, automotive body electronics, and network infrastructure applications requiring stable component supply, long-term lifecycle assurance, and guaranteed traceable sourcing.
Supply support for AT49BV1604A-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
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 non-volatile memory solutions for industrial and automotive markets.
The AT49BV1604A-90TI belongs to Atmel's BV-series 3V Flash memory family, engineered specifically for embedded boot code storage with emphasis on in-system programmability, data security, and robust operation across extended temperature ranges.
FAQ
What is the operating voltage range for AT49BV1604A-90TI?
The AT49BV1604A-90TI operates from 2.65V to 3.3V on VCC. This single-supply range eliminates the need for separate 5V programming voltage in most embedded systems. The device supports VPP acceleration at 5V ±0.5V or 12V ±0.5V, but VPP may be left unconnected for standard VCC-only operation. Input logic levels tolerate up to 5.5V, enhancing compatibility with mixed-voltage designs.
Does AT49BV1604A-90TI support byte-mode (x8) operation?
No, AT49BV1604A-90TI operates exclusively in word mode (x16). Unlike the AT49BV/LV1614A(T) variants, the AT49BV1604A-90TI does not use the BYTE pin for mode selection - I/O0–I/O15 are always active. For x8 operation, designers must select the AT49BV1614A-90TI or equivalent part with functional BYTE pin control and appropriate sector mapping.
How does sector lockdown work on AT49BV1604A-90TI?
Sector lockdown on AT49BV1604A-90TI is enabled per sector using a six-bus-cycle command sequence. Once activated, the locked sector becomes read-only: no erase or program operations are permitted until the next power-on or hardware reset. Lockdown status can be verified via software product identification mode by reading address 00002H within the sector - I/O0 = high indicates lockdown active. This feature protects boot code from accidental corruption during field updates.
What is the purpose of the VPP pin on AT49BV1604A-90TI?
The VPP pin on AT49BV1604A-90TI provides an optional higher-voltage supply (5V ±0.5V or 12V ±0.5V) to accelerate program and erase operations. When VPP exceeds VCC by >0.3V, the internal circuitry switches to VPP for programming energy, reducing typical program time to 20 µs and sector erase to 300 ms. If VPP is unconnected or ≤ VCC + 0.3V, the device defaults to VCC-powered operation - no external voltage source is required for basic functionality.
Can AT49BV1604A-90TI perform read operations during erase or program cycles?
Yes, AT49BV1604A-90TI supports true concurrent read-while-program/erase due to its dual-plane architecture. Reads from Plane B can occur simultaneously with program/erase in Plane A, and vice versa. Additionally, the erase suspend feature allows temporary halting of an erase operation in one sector to perform reads or writes in another sector within the same plane - enabling responsive system behavior without sacrificing Flash reliability or endurance.
AT49BV1604A-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:
- 2.65V ~ 3.3V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
AT49BV1604A-90TI FAQ
1.How can I place an order for AT49BV1604A-90TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV1604A-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 AT49BV1604A-90TI reliable?
The price and inventory of AT49BV1604A-90TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV1604A-90TI is usually 5 days.
3.What payment methods are accepted for AT49BV1604A-90TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV1604A-90TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV1604A-90TI?
AT49BV1604A-90TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV1604A-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 AT49BV1604A-90TI?
For technical support, including AT49BV1604A-90TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV1604A-90TI requirements.
6.How does Aetrix verify that AT49BV1604A-90TI is sourced from the original manufacturer or authorized distributors?
All AT49BV1604A-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 AT49BV1604A-90TI meets industry standards.
7.What is the process for return or replacement of AT49BV1604A-90TI?
All AT49BV1604A-90TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV1604A-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 AT49BV1604A-90TI part is unused and in its original packaging.
Return procedure for AT49BV1604A-90TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV1604A-90TI Tags
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