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Microchip Technology AT49BV162AT-70TU
- Part No.:
- AT49BV162AT-70TU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV162AT-70TU.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,580
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Product details
Overview
AT49BV162AT-70TU from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) single-supply 3.0 V Flash memory IC with sector erase architecture, 55 ns read access time, and support for byte/word programming in embedded systems requiring in-system reprogrammability and secure boot code storage.
For engineers reviewing the AT49BV162AT-70TU datasheet, AT49BV162AT-70TU pinout, AT49BV162AT-70TU application, or AT49BV162AT-70TU equivalent, key selection considerations include its TSOP-48 package, 39-sector organization (31 × 64 KB + 8 × 8 KB), suspend/resume capability for concurrent read/program during erase, CFI compliance, and hardware write protection via VPP and sector lockdown.
Technical Context
This device implements a command-based Flash architecture with dual-mode I/O (byte/word selectable via BYTE pin), CE/OE/WE control logic to prevent bus contention, and internal state machine-driven program/erase operations. It supports both chip- and sector-level erasure, with automatic timing and no external clocks required.
Its status reporting uses three independent mechanisms-RDY/BUSY open-drain output, Data Polling on I/O7, and Toggle Bit on I/O6-each configurable via a programmable status register. The 128-bit protection register (factory-programmed Block A + user-programmable Block B) enables system-level security for firmware integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16-bit or 2,097,152 × 8-bit organization) |
| Read Access Time | 55 ns - enables direct execution from flash in real-time microcontroller applications |
| Supply Voltage Range | 2.65 V to 3.6 V - compatible with 3.3 V logic systems without level-shifting |
| Program Time (Word) | 12 µs - reduces firmware update latency in field-programmable devices |
| Sector Erase Time | 300 ms max - predictable timing for deterministic firmware partitioning |
| Erase Endurance | 100,000 cycles - supports frequent over-the-air (OTA) updates in industrial controllers |
| Operating Temperature | –40°C to +85°C - qualified for extended-temperature industrial environments |
Pinout & Package
AT49BV162AT-70TU is housed in a 48-lead TSOP Type I (Thin Small Outline Package) with 0.5 mm pitch, compliant with JEDEC MO-141. Pin 1 is marked by a beveled corner; pin numbering proceeds counterclockwise.
| 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/O14 | Data I/O (bidirectional) | 15-bit data path; I/O15 serves as LSB address (A-1) in byte mode |
| I/O15 | Data I/O or A-1 Input | Configurable: word-data bit 15 or byte-mode LSB address input when BYTE = 0 |
| BYTE | Mode Select Input | Logic high = 16-bit word mode (I/O0–I/O15 active); low = 8-bit byte mode (I/O0–I/O7 active) |
| 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 avoid bus contention during reads |
| WE | Write Enable | Active-low write strobe; latches addresses and data during command sequences |
| VPP | Write Protection Voltage | Must be ≥0.9 V for program/erase; <0.4 V inhibits all write operations - prevents accidental writes |
| RDY/BUSY | Open-Drain Status Output | Pulled low during internal program/erase; allows OR-tied multi-device status monitoring |
| RESET | Hardware Initialization | Active-low reset halts ongoing operations and forces return to read/standby mode |
Key Features
| Feature | Design Value |
|---|---|
| Sector Erase Architecture | 39 independently lockable sectors (31 × 64 KB + 8 × 8 KB) enable granular firmware partitioning and secure boot block isolation |
| Erase/Program Suspend | Allows reading or programming one sector while erasing another - critical for real-time interrupt handling in embedded OS loaders |
| Common Flash Interface (CFI) | Standardized query table at fixed addresses enables auto-detection and driver portability across flash vendors |
| 128-bit Protection Register | Factory-set Block A + user-lockable Block B provides tamper-resistant storage for cryptographic keys or serial numbers |
| Hardware Data Protection | VCC sense, power-on delays, and VPP threshold enforcement prevent spurious writes during brown-out or power ramp-up |
| Top/Bottom Boot Configuration | Supports flexible boot vector placement - essential for legacy BIOS/UEFI compatibility in x86-compatible designs |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
Use Scenario: Storing firmware and configuration parameters in programmable logic controllers operating in harsh factory environments with wide temperature swings and EMI exposure. IC Role / Device Role / Timing Role: Non-volatile program memory providing deterministic 55 ns read access for real-time instruction fetch and sector-locked boot loader protection. Use Value: 100,000 erase cycles and –40°C to +85°C rating ensure long-term reliability; suspend/resume avoids watchdog timeouts during field firmware updates. |
Use Scenario: Securing boot code and calibration data in FDA-cleared diagnostic equipment where firmware integrity verification is mandatory before operation. IC Role / Device Role / Timing Role: Trusted boot memory with 128-bit protection register and sector lockdown preventing unauthorized modification of safety-critical startup routines. Use Value: Hardware-enforced VPP and RESET-based initialization guarantee known-good state on power-up; CFI enables automated flash driver validation during production test. |
| Automotive Infotainment System Updates | Networking Equipment Configuration Storage |
Use Scenario: Hosting updatable firmware images and UI assets in automotive head units, requiring OTA updates without disrupting audio/video playback. IC Role / Device Role / Timing Role: Dual-mode (x8/x16) Flash memory enabling efficient DMA transfers and concurrent background erase via suspend/resume. Use Value: 300 ms sector erase time and fast 12 µs word program allow sub-second partial updates; top/bottom boot config supports redundant image storage. |
Use Scenario: Storing switch/router configuration tables, MAC address pools, and firmware overlays in carrier-grade Ethernet switches with hot-swap capability. IC Role / Device Role / Timing Role: High-reliability configuration store with RDY/BUSY signaling for precise timing of configuration reload after failover events. Use Value: TSOP-48 package supports high-density PCB layouts; CFI compliance simplifies driver integration across multiple switch ASIC platforms. |
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 | 16 Mbit, 70 ns access, 3.0 V supply, 48-TSOP; lacks VPP pin and sector lockdown; uses different command set | No hardware write protection or secure boot lockdown - requires software-only protection schemes | Choose when cost sensitivity outweighs security requirements and existing firmware already supports SST command protocol |
| MX29LV160DBTI-70G | 16 Mbit, 70 ns, 3.0 V; supports CFI and top/bottom boot but has only 10,000 erase cycles and no suspend/resume | Limited endurance and no concurrent read/erase capability - unsuitable for frequent OTA updates | Select for static firmware storage where update frequency is low and CFI compatibility is primary requirement |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160DBTI-70G, AT49BV162AT-70TU delivers superior system-level reliability through hardware-enforced write protection, 10× higher endurance, and true concurrent operation via suspend/resume - making it optimal for safety-critical or frequently updated embedded systems.
Availability
AT49BV162AT-70TU is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, automotive infotainment systems, and carrier-grade networking gear requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for AT49BV162AT-70TU 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 technical and supply chain continuity for legacy Atmel Flash products including the AT49BV series.
The AT49BV162AT-70TU belongs to Atmel's 3.0 V Flash memory product line, designed specifically for embedded systems needing robust in-system programmability, secure boot partitioning, and industrial-grade reliability without external voltage translators.
FAQ
What is the maximum operating temperature range for the AT49BV162AT-70TU?
The AT49BV162AT-70TU is rated for operation from –40°C to +85°C, meeting industrial temperature requirements. This specification is validated per JEDEC JESD22-A108 and applies across the full 2.65 V to 3.6 V supply range. The device maintains 55 ns read access time and reliable sector erase functionality within this range, making AT49BV162AT-70TU suitable for deployment in uncontrolled ambient environments such as factory floors or vehicle cabins.
Does the AT49BV162AT-70TU support both byte and word data interfaces?
Yes, the AT49BV162AT-70TU supports configurable x8 or x16 data interface modes via the BYTE pin. When BYTE = 1, I/O0–I/O15 are active for 16-bit word access; when BYTE = 0, only I/O0–I/O7 are active and I/O15 functions as A-1 address input. This dual-mode capability allows AT49BV162AT-70TU to interface directly with 8-bit microcontrollers or 16-bit processors without external glue logic, reducing BOM cost and board space.
How does the VPP pin protect against unintended writes in the AT49BV162AT-70TU?
The VPP pin on the AT49BV162AT-70TU acts as a hardware write-enable gate: program and erase operations are inhibited when VPP < 0.4 V, and enabled only when VPP ≥ 0.9 V. This prevents accidental writes during power-up/down transients or noise coupling. Unlike software-only locks, this feature is electrically enforced - even valid command sequences fail if VPP is out of spec. AT49BV162AT-70TU requires VPP to be actively driven, not left floating, to ensure deterministic protection behavior.
Can the AT49BV162AT-70TU perform read operations while erasing another sector?
Yes, the AT49BV162AT-70TU supports Erase Suspend: issuing the B0h command pauses an ongoing sector or chip erase, allowing immediate read or program access to any non-suspending sector within 15 µs. After servicing the interrupt or foreground task, the Erase Resume (30h) command resumes the original erase. This capability is implemented in hardware and requires no firmware overhead - a core differentiator of AT49BV162AT-70TU for real-time embedded applications.
Is the AT49BV162AT-70TU pin-compatible with the AT49BV163AT-70TU?
No, the AT49BV162AT-70TU and AT49BV163AT-70TU are not pin-compatible. While both use 48-lead TSOP packages, the AT49BV163AT-70TU replaces the VPP pin with NC (no connect), removing hardware write protection. Pin 15 is VPP on AT49BV162AT-70TU but NC on AT49BV163AT-70TU; using them interchangeably risks unreliable write inhibition. AT49BV162AT-70TU is the correct choice when VPP-based protection is required in the design.
AT49BV162AT-70TU 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:
- 200µs
- Access Time:
- 70 ns
- Voltage - Supply:
- 2.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
AT49BV162AT-70TU FAQ
1.How can I place an order for AT49BV162AT-70TU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV162AT-70TU 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 AT49BV162AT-70TU reliable?
The price and inventory of AT49BV162AT-70TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV162AT-70TU is usually 5 days.
3.What payment methods are accepted for AT49BV162AT-70TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV162AT-70TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV162AT-70TU?
AT49BV162AT-70TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV162AT-70TU 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 AT49BV162AT-70TU?
For technical support, including AT49BV162AT-70TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV162AT-70TU requirements.
6.How does Aetrix verify that AT49BV162AT-70TU is sourced from the original manufacturer or authorized distributors?
All AT49BV162AT-70TU 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 AT49BV162AT-70TU meets industry standards.
7.What is the process for return or replacement of AT49BV162AT-70TU?
All AT49BV162AT-70TU units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV162AT-70TU, 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 AT49BV162AT-70TU part is unused and in its original packaging.
Return procedure for AT49BV162AT-70TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV162AT-70TU Tags
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