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Microchip Technology AT49BV1604A-70TI
- Part No.:
- AT49BV1604A-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV1604A-70TI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,125
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Product details
Overview
AT49BV1604A-70TI from Microchip Technology (formerly Atmel) is a 16-Mbit (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 capability, and TSOP/CBGA packaging. It serves as nonvolatile storage for boot code, firmware, and configuration data in embedded microcontroller systems requiring in-system reprogrammability.
For engineers reviewing the AT49BV1604A-70TI datasheet, AT49BV1604A-70TI pinout, AT49BV1604A-70TI application, or AT49BV1604A-70TI equivalent, this page delivers verified electrical specs, dual-plane timing behavior, VPP-accelerated programming support, sector lockdown security, and real-world Flash replacement guidance - all grounded in Rev. 1411F–FLASH–03/02.
Technical Context
The AT49BV1604A-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 reads from one plane while programming or erasing the other - eliminating read latency during background operations.
It supports hardware-based sector lockdown via six-byte command sequences, a 128-bit protection register (factory-block A + user-lockable block B), and three end-of-operation detection methods: RDY/BUSY pin (open-drain), Data Polling on I/O7, and Toggle Bit on I/O6/I/O2 - all confirmed for this exact part number in the official datasheet.
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 - determines maximum sustained read throughput in high-speed MCU interfaces |
| Supply Voltage | 2.65V to 3.3V - single 3V rail operation enables direct integration with 3.3V logic and microcontrollers |
| Program Time | 20 µs per word - defines minimum write cycle duration for firmware updates |
| Sector Erase Time | 300 ms max - sets worst-case delay when updating protected boot sectors |
| Standby Current | 10 µA - enables ultra-low-power retention in battery-backed or energy-constrained systems |
| VPP Acceleration | 5.0V ± 0.5V or 12.0V ± 0.5V - reduces program/erase times when external high-voltage supply is available |
Pinout & Package
AT49BV1604A-70TI is offered in 48-lead TSOP (Type 1) and 48-ball CBGA packages. Pin functions are identical across both packages per datasheet Rev. 1411F, with ball/pin numbering aligned to standard JEDEC layouts.
| 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 only (not used in AT49BV1604A-70TI's fixed word mode) |
| I/O0–I/O15 | Data I/O (x16) | 16-bit bidirectional data bus; operates exclusively in word mode per device configuration |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read access |
| OE | Output Enable | Active-low output control; used with CE to prevent bus contention during multi-device sharing |
| WE | Write Enable | Active-low control for command latching and programming; falling edge latches address, rising edge latches data |
| RDY/BUSY | Ready/Busy Output | Open-drain status signal pulled low during internal program/erase; supports wired-OR of multiple devices |
| VPP | Program/Erase Voltage | Accepts 5V or 12V for accelerated operations; left unconnected for standard VCC-only programming |
| RESET | Device Reset | Active-low input that halts ongoing operations and forces high-impedance outputs; required to exit Single Pulse Program Mode |
| VCCQ | Output Power Supply | Separate 2.65–3.3V supply for I/O drivers; VOH = VCCQ − 0.2V ensures clean 3.3V-compatible signaling |
| BYTE | Mode Select | Not functional in AT49BV1604A-70TI - device operates in fixed x16 word mode regardless of BYTE pin state |
Key Features
| Feature | Design Value |
|---|---|
| Dual-plane concurrent operation | Enables simultaneous read from Plane B while programming/erasing Plane A - eliminates system stall during firmware updates |
| Erase suspend/resume | Pauses active sector erase to allow immediate read/program from other sectors in same plane - critical for real-time interrupt handling |
| 128-bit protection register | Factory-programmed 64-bit ID block + user-programmable/lockable 64-bit block - supports secure boot authentication and anti-cloning |
| Sector lockdown | Per-sector write-protection activated via command sequence - preserves immutable boot loader while allowing application partition updates |
| Hardware data protection | VCC sense, 10 ms power-on delay, noise filtering (<15 ns), and control-line inhibit prevent accidental writes during power transients or noise events |
Applications
| Industrial PLC Firmware Storage | Automotive ECU Boot Memory |
|---|---|
Use Scenario: Storing field-upgradable ladder logic and motion control algorithms in programmable logic controllers with extended temperature operation. IC Role / Device Role / Timing Role: Nonvolatile boot and application code storage with 70 ns read access enabling deterministic instruction fetch timing for real-time task scheduling. Use Value: Dual-plane architecture allows background firmware validation while executing current control loop - no system interruption during OTA updates. | Use Scenario: Holding certified bootloader and safety-critical calibration data in engine control units operating from −40°C to +85°C. IC Role / Device Role / Timing Role: Secure, sector-locked Flash memory providing tamper-resistant storage for ISO 26262 ASIL-B compliant boot code. Use Value: 128-bit protection register and hardware lockdown prevent unauthorized modification of startup routines - meeting automotive functional safety requirements. |
| Medical Device Configuration Storage | Networking Equipment Image Backup |
Use Scenario: Retaining device-specific calibration coefficients, patient history templates, and regulatory compliance flags in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-power (10 µA standby) Flash memory preserving settings across battery cycles without volatile RAM backup. Use Value: Sector erase granularity (8 KB and 64 KB blocks) enables selective update of calibration tables without disturbing FDA-approved firmware partitions. | Use Scenario: Maintaining redundant firmware images and configuration snapshots in enterprise switches and routers for fail-safe recovery. IC Role / Device Role / Timing Role: High-reliability Flash with RDY/BUSY pin and Data Polling for robust image verification during power-loss-prone reboots. Use Value: Erase suspend capability permits immediate response to management interface requests while background image validation proceeds - improving system responsiveness. |
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, 3.0–3.6V supply; lacks VPP acceleration and dual-plane concurrency | No concurrent read/program - requires full wait-state stalls during erase; no sector lockdown or 128-bit protection register | Select when cost sensitivity outweighs need for background operations or security features |
| MX29LV160DBTI-70G | 16 Mbit, 70 ns, 2.7–3.6V; includes CFI-compliant command set but no VPP pin or erase suspend | Boot-block architecture differs (top/bottom configurable); no RDY/BUSY pin - relies solely on polling/toggle bit | Choose for legacy CFI-based toolchain compatibility where dual-plane performance is not required |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160DBTI-70G, the AT49BV1604A-70TI uniquely delivers concurrent dual-plane operation, hardware-accelerated programming via VPP, and sector-level lockdown - making it optimal for systems demanding zero-interruption firmware updates and secure boot integrity.
Availability
AT49BV1604A-70TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU boot memory, medical device configuration storage, and networking equipment image backup requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT49BV1604A-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 series. The company specializes in microcontrollers, analog, Flash, and security solutions for embedded markets.
The AT49BV1604A-70TI belongs to Atmel's BV-series 3V Flash memory product line, designed specifically for reliable, in-system programmable nonvolatile storage in resource-constrained embedded systems with stringent power and security requirements.
FAQ
What is the operating voltage range for AT49BV1604A-70TI?
The AT49BV1604A-70TI operates from 2.65V to 3.3V. This single-supply range enables direct interfacing with 3.3V microcontrollers and logic families without level-shifting. The device does not support 5V operation, and VPP acceleration requires externally supplied 5.0V ± 0.5V or 12.0V ± 0.5V - not derived from VCC.
Does AT49BV1604A-70TI support byte-mode operation?
No. Unlike the AT49BV/LV1614A(T) variants, the AT49BV1604A-70TI is configured for fixed x16 word-mode operation only. The BYTE pin has no functional effect; I/O0–I/O15 are always active, and I/O15 never serves as A-1 address input. This simplifies PCB layout and timing analysis for 16-bit bus systems.
How does the dual-plane architecture improve system performance in AT49BV1604A-70TI?
The AT49BV1604A-70TI's dual-plane design allows reads from Plane B while programming or erasing Plane A - and vice versa. This eliminates mandatory wait states during firmware updates, enabling real-time execution of control code while background Flash operations proceed. No additional software overhead or hardware arbitration is required.
What security mechanisms does AT49BV1604A-70TI provide for boot code protection?
The AT49BV1604A-70TI provides three layered security features: (1) per-sector lockdown via command sequence to make boot sectors read-only, (2) a 128-bit protection register with factory-programmed ID and user-lockable block, and (3) hardware data protection including VCC sensing and noise filtering - all confirmed for AT49BV1604A-70TI in Rev. 1411F.
Can AT49BV1604A-70TI be programmed using only the VCC supply, without VPP?
Yes. AT49BV1604A-70TI supports full program and erase functionality using only the 2.65–3.3V VCC supply. VPP is optional and used solely to accelerate operations: applying 5.0V ± 0.5V or 12.0V ± 0.5V to VPP reduces program time and sector erase time, but leaving VPP unconnected or tied to VCC yields guaranteed operation per datasheet specifications.
AT49BV1604A-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
AT49BV1604A-70TI FAQ
1.How can I place an order for AT49BV1604A-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV1604A-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 AT49BV1604A-70TI reliable?
The price and inventory of AT49BV1604A-70TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV1604A-70TI is usually 5 days.
3.What payment methods are accepted for AT49BV1604A-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV1604A-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV1604A-70TI?
AT49BV1604A-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV1604A-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 AT49BV1604A-70TI?
For technical support, including AT49BV1604A-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV1604A-70TI requirements.
6.How does Aetrix verify that AT49BV1604A-70TI is sourced from the original manufacturer or authorized distributors?
All AT49BV1604A-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 AT49BV1604A-70TI meets industry standards.
7.What is the process for return or replacement of AT49BV1604A-70TI?
All AT49BV1604A-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV1604A-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 AT49BV1604A-70TI part is unused and in its original packaging.
Return procedure for AT49BV1604A-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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