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Microchip Technology AT49BV160T-90TI
- Part No.:
- AT49BV160T-90TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV160T-90TI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,244
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Product details
Overview
AT49BV160T-90TI from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) single-supply 3.0V Flash memory IC used for nonvolatile code and data storage in embedded systems. It features 39-sector erase architecture (31 × 64KB + 8 × 8KB), 70 ns access time, 20 µs word program time, and supports in-system programming via 2.65–3.3V VCC. It is commonly deployed in boot code storage for industrial controllers and firmware update modules.
For engineers reviewing the AT49BV160T-90TI datasheet, AT49BV160T-90TI pinout, AT49BV160T-90TI application, or AT49BV160T-90TI equivalent, key selection considerations include sector lockdown capability, suspend/resume support during erase/program, VPP-accelerated operation, RDY/BUSY signaling (TSOP variant), and TSOP-48/CBGA-48 package compatibility with legacy 3.3V microcontroller interfaces.
Technical Context
The AT49BV160T-90TI implements a command-register-based Flash architecture with internal state machine control for erase, program, and suspend operations. It uses address latching on CE/WE falling edge and data latching on rising edge, supporting standard microprocessor timing without external clocks.
It integrates hardware data protection (VCC sense, noise filtering, VPP threshold enforcement), a 128-bit user-programmable protection register (with factory-block A and lockable user-block B), and configurable status reporting (I/O7 polling mode vs. toggle bit mode via configuration register).
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 maximum read latency under worst-case VCC = 2.65V, TA = +85°C conditions |
| Program Time | 20 µs per word - enables high-throughput firmware updates without external timing circuitry |
| Sector Erase Time | 300 ms max per sector - allows selective field-upgrade of application partitions while preserving boot code |
| Supply Voltage | 2.65V to 3.3V - compatible with 3.3V I/O domains and eliminates need for dual-voltage rails |
| Standby Current | 10 µA - supports low-power retention in battery-backed or energy-constrained systems |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade embedded applications |
Pinout & Package
AT49BV160T-90TI is available in 48-pin TSOP Type I (JEDEC MO-142) and 48-ball CBGA packages. The "-90TI" suffix denotes the 90 ns access time grade in TSOP packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing; A-1 function multiplexed on I/O15 in byte mode |
| I/O0–I/O15 | Data I/O (x16 mode) | Bi-directional 16-bit data bus; in x8 mode, I/O0–I/O7 active, I/O8–I/O14 tri-stated, I/O15 repurposed as A-1 LSB |
| CE | Chip Enable | Active-low chip select enabling memory access; used with OE for bus contention avoidance |
| OE | Output Enable | Active-low output gate; controls data bus drive only - does not affect internal state machine |
| WE | Write Enable | Active-low control for command/data latching; falling edge latches address, rising edge latches data |
| VPP | Program/Erase Voltage | Enables accelerated programming (5V/12V) or disables write functions when <0.8V; must not float |
| RDY/BUSY | Open-drain Status Output | Actively pulled low during erase/program; supports wired-OR multi-device status monitoring |
| RESET | Hardware Initialization | Forces device into read/standby mode; required to exit suspend states or recover from failed operations |
| BYTE | Mode Select | Logic high = x16 word mode (AT49BV160T); logic low = x8 byte mode (AT49BV161T) - fixed in this variant |
| VCCQ | Output Driver Supply | Separate 3.3V supply for I/O drivers; decouples output switching noise from core logic VCC |
Key Features
| Feature | Design Value |
|---|---|
| Sector Erase Architecture | 39 independently lockable sectors (31 × 64KB + 8 × 8KB) enable granular firmware partitioning and secure boot code isolation |
| Erase/Program Suspend | Allows real-time interruption of erase/program to service read requests from other sectors - critical for deterministic response in RTOS environments |
| 128-bit Protection Register | Factory-programmed 64-bit block A + user-programmable/lockable 64-bit block B provides tamper-resistant device identity and secure key storage |
| VPP-Accelerated Operation | Supports 5V or 12V on VPP pin to reduce program/erase times by up to 4× versus VCC-only operation - reduces flash wear during frequent updates |
| Hardware Data Protection | Integrated safeguards including VCC sense (<1.8V inhibit), 10ms power-on delay, and 15ns noise filtering prevent spurious writes in noisy industrial environments |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader |
|---|---|
|
Use Scenario: Storing certified bootloader and safety-critical firmware in programmable logic controllers with field-upgrade capability. IC Role / Device Role / Timing Role: Nonvolatile code storage with sector lockdown protecting boot sector from accidental overwrite during application updates. Use Value: Enables secure, validated firmware updates without requiring full reflash - reduces downtime and maintains regulatory compliance. |
Use Scenario: Holding FDA-cleared boot code and calibration data in portable diagnostic equipment requiring data integrity across power cycles. IC Role / Device Role / Timing Role: Primary boot memory with 128-bit protection register storing cryptographic keys and device-specific identifiers. Use Value: Prevents unauthorized firmware modification and ensures traceability via factory-programmed block A of protection register. |
| Automotive Infotainment Module | Network Router Configuration Storage |
|
Use Scenario: Retaining radio firmware, UI assets, and vehicle-specific configuration in head units operating across wide temperature ranges. IC Role / Device Role / Timing Role: High-reliability Flash memory supporting -40°C to +85°C operation and 100K+ erase/program cycles. Use Value: Meets automotive AEC-Q100 stress test requirements for data retention and endurance under thermal cycling. |
Use Scenario: Storing routing tables, security certificates, and failover configurations in enterprise-grade networking hardware. IC Role / Device Role / Timing Role: Dual-mode (x8/x16) interface supporting both microcontroller and FPGA host interfaces with RDY/BUSY handshake. Use Value: RDY/BUSY open-drain output allows synchronous status monitoring across multiple Flash devices on shared bus. |
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 | Same density (16Mbit), 90 ns access, but uses different command set and lacks VPP acceleration or 128-bit protection register | No sector lockdown or erase suspend - unsuitable for real-time systems requiring concurrent read/write | Prefer AT49BV160T-90TI where secure boot partitioning and suspend/resume are required |
| MX29LV160ETTI-90G | Pin-compatible TSOP-48, 90 ns, but requires 3.0–3.6V supply (no 2.65V low-VCC support) and lacks RDY/BUSY pin | No hardware status pin - forces software polling, increasing CPU overhead and reducing determinism | Choose AT49BV160T-90TI for designs needing guaranteed low-voltage operation and hardware-ready signaling |
Compared with SST39VF1601C-90-4C-EKE and MX29LV160ETTI-90G, the AT49BV160T-90TI delivers unique value through integrated sector lockdown, VPP-accelerated erase/program, and RDY/BUSY hardware signaling - enabling robust, real-time firmware management in safety-critical embedded systems.
Availability
AT49BV160T-90TI is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics, automotive infotainment, and network infrastructure requiring stable component supply, long-term lifecycle support, and verified Flash reliability.
Supply support for AT49BV160T-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 technical and manufacturing continuity for the AT49BV/LV Flash family. The company specializes in microcontrollers, analog, and nonvolatile memory solutions for industrial, automotive, and communications markets.
The AT49BV160T-90TI belongs to Atmel's legacy parallel-interface Flash product line, designed specifically for reliable, in-system programmable code storage in resource-constrained embedded systems requiring deterministic timing and hardware-level data protection.
FAQ
What is the difference between AT49BV160T-90TI and AT49BV161T-90TI?
The AT49BV160T-90TI operates exclusively in x16 word mode, with I/O0–I/O15 always active and BYTE pin internally tied high. In contrast, AT49BV161T-90TI supports selectable x8/x16 mode via the BYTE pin. This makes AT49BV160T-90TI ideal for 16-bit microcontroller buses, while AT49BV161T-90TI offers flexibility for 8-bit or 16-bit hosts. Both share identical timing, sector architecture, and feature set otherwise.
Does AT49BV160T-90TI support hardware reset recovery after a failed program operation?
Yes. If a program or erase operation fails - indicated by I/O5 or I/O3 going high - the AT49BV160T-90TI remains in status-read mode until the Product ID Exit command (0xF0) is issued. A hardware RESET pulse (≥500 ns low) also clears the error state and returns the device to read/standby mode, enabling automatic recovery in fault-tolerant systems using AT49BV160T-90TI.
Can AT49BV160T-90TI be used with a 1.8V I/O interface?
No. The AT49BV160T-90TI requires VCCQ = VCC (2.65–3.3V) for proper output levels; its VOH is specified as VCCQ − 0.2V. While inputs tolerate 0–5.5V, outputs cannot drive 1.8V logic directly. For mixed-voltage systems, level-shifting circuitry or use of VCCQ-regulated 2.0V (only supported in LV variants like AT49LV160T) is required - not applicable to AT49BV160T-90TI.
How does sector lockdown work on AT49BV160T-90TI, and can it be reversed?
Sector lockdown on AT49BV160T-90TI is enabled per-sector via the six-cycle Sector Lockdown command (SA + 60H). Once locked, the sector becomes read-only until the next power cycle or hardware RESET - no software unlock command exists. This design ensures boot code integrity: AT49BV160T-90TI retains locked sectors across normal operation but permits reprogramming only after intentional system restart.
Is RDY/BUSY functionality available on all AT49BV160T-90TI packages?
RDY/BUSY is present on the TSOP-48 variant of AT49BV160T-90TI (pin 47), as confirmed in the TSOP top-view diagram. However, the CBGA-48 package does not include RDY/BUSY - it relies solely on I/O status bits (I/O5/I/O6/I/O7) for operation completion detection. Engineers selecting AT49BV160T-90TI must verify package type to ensure RDY/BUSY availability for hardware handshaking.
AT49BV160T-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:
- 200µs
- 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
AT49BV160T-90TI FAQ
1.How can I place an order for AT49BV160T-90TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV160T-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 AT49BV160T-90TI reliable?
The price and inventory of AT49BV160T-90TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV160T-90TI is usually 5 days.
3.What payment methods are accepted for AT49BV160T-90TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV160T-90TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV160T-90TI?
AT49BV160T-90TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV160T-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 AT49BV160T-90TI?
For technical support, including AT49BV160T-90TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV160T-90TI requirements.
6.How does Aetrix verify that AT49BV160T-90TI is sourced from the original manufacturer or authorized distributors?
All AT49BV160T-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 AT49BV160T-90TI meets industry standards.
7.What is the process for return or replacement of AT49BV160T-90TI?
All AT49BV160T-90TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV160T-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 AT49BV160T-90TI part is unused and in its original packaging.
Return procedure for AT49BV160T-90TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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