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Microchip Technology AT49BV162AT-70TI
- Part No.:
- AT49BV162AT-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV162AT-70TI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,076
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Product details
Overview
AT49BV162AT-70TI from Atmel is a 16-Mbit (1M × 16 / 2M × 8) single-supply 2.65–3.6V Flash memory with 55 ns read access time, sector erase architecture (31 × 64KB + 8 × 8KB sectors), and suspend/resume capability for concurrent read/program during erase. It supports in-system programming in embedded boot code storage applications.
For engineers reviewing the AT49BV162AT-70TI datasheet, AT49BV162AT-70TI pinout, AT49BV162AT-70TI application, or AT49BV162AT-70TI equivalent, key selection criteria include sector lockdown support, CFI compliance, VPP-based write protection, TSOP/CBGA package options, and 100,000 erase cycle endurance.
Technical Context
The AT49BV162AT-70TI implements a command-driven Flash architecture with dual-mode data interface (x8/x16 via BYTE pin), CE/OE/WE control logic to prevent bus contention, and hardware reset-initiated recovery from suspended operations. Its internal state machine handles embedded erase and program timing without external clocks.
It integrates three status detection methods-READY/BUSY open-drain output, Data Polling on I/O7, and Toggle Bit on I/O6-each configurable via a two-bit status register. The device also embeds a factory-programmed 64-bit block and user-programmable/lockable 64-bit block within its 128-bit protection register for secure boot code management.
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 systems |
| Supply Voltage | 2.65–3.6V - compatible with 3.3V logic rails without level-shifting |
| Erase Endurance | 100,000 cycles - ensures long-term field reliability in firmware update scenarios |
| Sector Architecture | 39 sectors: 31 × 64KB + 8 × 8KB - allows granular firmware partitioning (e.g., bootloader + application + config) |
| Program Time | 12 µs per word - reduces over-the-air update latency in connected devices |
| Suspend Latency | ≤15 µs (erase suspend), ≤20 µs (program suspend) - guarantees deterministic response during critical system reads |
Pinout & Package
AT49BV162AT-70TI is available in 48-lead TSOP (Type 1) and 48-ball CBGA packages. Both variants share identical pin functions and signal mapping, with VPP present only on AT49BV162A(T) variants (including this part).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing in x16 mode |
| I/O0–I/O14 | Data I/O (x16) | 15-bit bidirectional data path; I/O15 serves as A−1 in x8 mode |
| I/O15 / A−1 | Mode-Dependent Terminal | In x16 mode: MSB data I/O; in x8 mode: LSB address input (A−1) |
| BYTE | Interface Mode Select | Logic high = x16 operation (I/O0–I/O15 active); low = x8 operation (I/O0–I/O7 active, I/O8–I/O14 tri-stated) |
| VPP | Write Protection Enable | Must be ≥0.9V for program/erase; <0.4V disables all write operations - prevents accidental corruption |
| RDY/BUSY | Open-Drain Status Output | Active-low during internal operations; supports wired-OR of multiple devices on shared bus |
| RESET | Hardware Initialization | Pulsing low ≥500 ns forces return to read/standby mode and clears suspend states |
Key Features
| Feature | Design Value |
|---|---|
| Sector Lockdown | Per-sector programmable write-protection enabling immutable bootloader storage while allowing application updates |
| Erase/Program Suspend | Interrupt long-duration erase/program to service real-time read requests from other sectors - no software timeout required |
| Common Flash Interface (CFI) | Standardized query table at fixed addresses enables automatic driver configuration and multi-vendor firmware portability |
| 128-bit Protection Register | Factory-programmed 64-bit ID + user-lockable 64-bit block for cryptographic key binding or license enforcement |
| Hardware Data Protection | VCC sense, power-on delays, and VPP threshold monitoring prevent spurious writes during power ramp-up or brownout |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader |
|---|---|
Use Scenario: Storing certified firmware images in programmable logic controllers requiring field updates without downtime. IC Role / Device Role / Timing Role: Non-volatile code storage with sector lockdown protecting safety-critical startup routines. Use Value: Enables safe over-the-air updates by isolating bootloader (locked) from application (erasable) sectors. | Use Scenario: Securing FDA-approved boot code in diagnostic imaging equipment where runtime integrity is mandated. IC Role / Device Role / Timing Role: Trusted execution environment anchor storing signed bootloader verified at power-on reset. Use Value: 128-bit protection register binds firmware to hardware; CFI enables automated driver compatibility across product generations. |
| Automotive Infotainment Head Unit | Network Router Configuration Storage |
Use Scenario: Holding upgradable UI firmware and localization assets in vehicle infotainment systems with AEC-Q100 alignment. IC Role / Device Role / Timing Role: Dual-mode (x8/x16) interface adapts to host processor bus width; suspend/resume avoids audio dropouts during firmware patching. Use Value: 55 ns read access supports zero-latency instruction fetch; 100K-cycle endurance matches vehicle lifecycle requirements. | Use Scenario: Retaining persistent configuration and routing tables in enterprise-grade network switches with hot-swap capability. IC Role / Device Role / Timing Role: Sector-erasable non-volatile storage supporting atomic save/restore of configuration snapshots. Use Value: Individual 8KB sector lockout prevents accidental overwrite of MAC address tables or security certificates. |
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 (16Mbit), 70 ns access, 3.0–3.6V supply; lacks VPP pin and sector lockdown | No hardware write-protection granularity; relies on software locks only | Choose when cost sensitivity outweighs need for hardware-level sector lockdown |
| MX29LV160ETTI-70G | 16Mbit, 70 ns, 2.7–3.6V; includes CFI but no suspend/resume or 128-bit protection register | Supports basic firmware updates but not concurrent read-during-erase in real-time systems | Prefer for legacy designs already using Macronix toolchains and where suspend latency is non-critical |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160ETTI-70G, the AT49BV162AT-70TI uniquely delivers hardware-enforced sector lockdown, true erase/program suspend with sub-20 µs latency, and a factory-seeded 128-bit protection register - making it the only option among the three qualified for safety-critical boot code storage with concurrent operational flexibility.
Availability
AT49BV162AT-70TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader retention, automotive infotainment code updates, and network router configuration persistence requiring stable component supply across extended production lifecycles.
Supply support for AT49BV162AT-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
Atmel Corporation (now part of Microchip Technology) is a fabless semiconductor company specializing in microcontrollers, Flash memory, and secure authentication ICs for embedded systems.
The AT49BV162AT-70TI belongs to Atmel's legacy parallel-interface Flash memory product line, engineered for reliable in-system programmability and robust data retention in mission-critical embedded boot applications.
FAQ
What is the maximum operating temperature range for the AT49BV162AT-70TI?
The AT49BV162AT-70TI is rated for operation from –40°C to +85°C under bias, with storage temperature spanning –65°C to +150°C. These specifications align with industrial-grade environmental requirements and are validated per the Absolute Maximum Ratings table in the official datasheet (3349H–FLASH–3/05). The AT49BV162AT-70TI maintains full functionality-including 55 ns read access and sector erase timing-across this full industrial temperature range.
Does the AT49BV162AT-70TI support both x8 and x16 data bus configurations?
Yes, the AT49BV162AT-70TI supports both configurations via the BYTE pin: logic high selects x16 mode (I/O0–I/O15 active), and logic low selects x8 mode (I/O0–I/O7 active, I/O8–I/O14 tri-stated, I/O15 repurposed as A−1). This dual-mode capability allows seamless integration with 8-bit or 16-bit microprocessor buses without external glue logic. The AT49BV162AT-70TI's internal address decoding automatically adjusts based on BYTE state, preserving full 16-Mbit capacity in either mode.
How does the VPP pin function on the AT49BV162AT-70TI?
The VPP pin on the AT49BV162AT-70TI acts as a hardware write-enable gate: program and erase operations are inhibited when VPP < 0.4V, and enabled only when VPP ≥ 0.9V. This prevents accidental writes during power transitions or noise events. Unlike some Flash devices, the AT49BV162AT-70TI requires explicit VPP voltage control-not just VCC-and the pin must never be left floating. The AT49BV162AT-70TI datasheet specifies that VPP must be tied to VCC or a dedicated 3.3V rail for normal operation.
Can the AT49BV162AT-70TI perform read operations while erasing another sector?
Yes, the AT49BV162AT-70TI supports Erase Suspend: issuing the B0h command halts an ongoing sector or chip erase, allowing immediate reads (or writes) from any non-suspending sector within ≤15 µs. After servicing the read request, the Erase Resume (30h) command restores the original erase operation. This capability is confirmed in Section 4.9 of the AT49BV162AT-70TI datasheet and is essential for real-time systems requiring uninterrupted data access during firmware updates.
Is the AT49BV162AT-70TI pin-compatible with the AT49BV163AT-70TI?
No, the AT49BV162AT-70TI is not pin-compatible with the AT49BV163AT-70TI. While both share the same 48-pin TSOP and 48-ball CBGA footprints, the AT49BV163AT-70TI replaces the VPP pin with NC (no connect), as noted in the "Pin Configurations" section of the datasheet. This difference affects hardware design: circuits relying on VPP-based write protection must use AT49BV162AT-70TI, not AT49BV163AT-70TI. The AT49BV162AT-70TI retains VPP functionality explicitly required for secure programming workflows.
AT49BV162AT-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:
- 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-70TI FAQ
1.How can I place an order for AT49BV162AT-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV162AT-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 AT49BV162AT-70TI reliable?
The price and inventory of AT49BV162AT-70TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV162AT-70TI is usually 5 days.
3.What payment methods are accepted for AT49BV162AT-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV162AT-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV162AT-70TI?
AT49BV162AT-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV162AT-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 AT49BV162AT-70TI?
For technical support, including AT49BV162AT-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV162AT-70TI requirements.
6.How does Aetrix verify that AT49BV162AT-70TI is sourced from the original manufacturer or authorized distributors?
All AT49BV162AT-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 AT49BV162AT-70TI meets industry standards.
7.What is the process for return or replacement of AT49BV162AT-70TI?
All AT49BV162AT-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV162AT-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 AT49BV162AT-70TI part is unused and in its original packaging.
Return procedure for AT49BV162AT-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV162AT-70TI Tags
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