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Microchip Technology AT49BV160T-70TI
- Part No.:
- AT49BV160T-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV160T-70TI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,457
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Product details
Overview
AT49BV160T-70TI from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) 3.0V-only parallel Flash memory IC used for nonvolatile code/data storage in embedded systems. It features 70 ns access time, sector erase architecture with 31 × 64KB + 8 × 8KB sectors, 20 µs word program time, and supports in-system programming via single 2.65–3.3V supply. Commonly deployed in boot memory for industrial controllers and telecom baseband modules.
For engineers reviewing the AT49BV160T-70TI datasheet, AT49BV160T-70TI pinout, AT49BV160T-70TI application, or AT49BV160T-70TI equivalent, key selection considerations include TSOP-48 package compatibility, VPP-assisted accelerated erase/program, suspend/resume capability for real-time firmware updates, and hardware data protection against inadvertent writes.
Technical Context
The AT49BV160T-70TI implements a command-register-based architecture with internal write state machine, supporting byte/word programming and sector/chip erase via six-byte software command sequences. It uses dual-voltage operation: VCC (2.65–3.3V) powers logic and I/O, while VPP (5.0V or 12.0V) accelerates program/erase cycles when enabled.
It integrates dedicated status signaling via I/O2–I/O7 (Data Polling on I/O7, Toggle Bit on I/O6, Erase/Program Status on I/O5, VPP Status on I/O3), plus RDY/BUSY open-drain output - though RDY/BUSY is absent in AT49BV160T variants per datasheet distinction from AT49BV161T. Sector lockdown and 128-bit protection register provide secure boot and user-defined security partitioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16-bit or 2,097,152 × 8-bit organization) |
| Access Time | 70 ns - guarantees maximum read latency under worst-case VCC = 2.65V, TA = 85°C conditions |
| Supply Voltage | 2.65V to 3.3V - enables direct interface with 3.3V microcontrollers without level-shifting |
| Word Program Time | 20 µs - defines minimum time between successive word writes during sequential programming |
| Sector Erase Time | 300 ms max - applies to any of the 39 individually erasable sectors (31 × 64KB + 8 × 8KB) |
| Standby Current | 10 µA - enables ultra-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-70TI is packaged in a 48-pin Thin Small Outline Package (TSOP Type I), 12 × 20 mm body, 0.5 mm lead pitch, JEDEC MO-141AC compliant. Pin 1 is marked by notch or dot; 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 not present (fixed word-mode device) |
| I/O0–I/O15 | Data Inputs/Outputs | 16-bit bidirectional data bus; operates exclusively in x16 mode - no BYTE pin or byte-mode support |
| CE, OE, WE | Control Signals | Chip Enable, Output Enable, Write Enable - dual-line control prevents bus contention during read/write transitions |
| VPP | Program/Erase Power Input | Enables accelerated programming/erasing at 5V or 12V; inhibits writes if <0.8V; ignored if within ±0.3V of VCC |
| RESET | Hardware Initialization | Forces device into read/standby mode; required to exit suspend states or recover from failed operations |
| RDY/BUSY | Status Output | Not implemented on AT49BV160T variant - status must be monitored via I/O polling or toggle bit only |
| VCCQ | Output Driver Supply | Must be tied to VCC for 3.3V I/O; decoupling critical for signal integrity in high-speed reads |
Key Features
| Feature | Design Value |
|---|---|
| Sector Erase Architecture | 39 independently lockable sectors (31 × 64KB + 8 × 8KB) enable selective firmware updates without full chip erase |
| Erase/Program Suspend | Allows interruption of active erase or program to read/program other sectors - essential for real-time OS boot loaders |
| VPP-Assisted Acceleration | Reduces sector erase time from 300 ms to ≤100 ms and word program time from 20 µs to ≤5 µs when VPP = 12V |
| Hardware Data Protection | Five-layer protection (VCC sense, power-on delay, control-line inhibit, noise filtering, VPP threshold) prevents accidental writes |
| 128-bit Protection Register | Factory-programmed Block A + user-programmable Block B (lockable) secures boot code and cryptographic keys |
Applications
| Industrial PLC Firmware Storage | Telecom Baseband Boot Memory |
|---|---|
Use Scenario: Storing field-upgradable firmware for programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile boot memory holding bootloader and real-time OS kernel; accessed during cold start and firmware patching. Use Value: Sector lockdown protects bootloader from corruption during field updates; 70 ns access ensures deterministic boot timing under 3.3V supply. | Use Scenario: Holding initialization code and DSP configuration tables in wireless infrastructure equipment with strict thermal constraints. IC Role / Device Role / Timing Role: Primary x16 Flash memory mapped to processor's memory bus; provides fast instruction fetch during power-on reset sequence. Use Value: 10 µA standby current minimizes system quiescent draw; TSOP-48 footprint simplifies PCB layout in dense RF modules. |
| Medical Diagnostic Device Configuration | Automotive Infotainment Boot ROM |
Use Scenario: Storing calibration data, safety-critical configuration profiles, and regulatory compliance logs in portable ultrasound units. IC Role / Device Role / Timing Role: Secure parameter storage with tamper-resistant sector lockdown and 128-bit protection register for audit trail integrity. Use Value: Factory-block A ensures traceability; user-block B stores device-specific calibrations locked post-manufacturing. | Use Scenario: Hosting boot code and display initialization firmware in automotive head units requiring AEC-Q100-compliant components. IC Role / Device Role / Timing Role: Parallel Flash memory interfaced to ARM Cortex-A application processor; supports fast boot from cold start. Use Value: -40°C to +85°C rating meets automotive ambient requirements; suspend/resume enables concurrent UI rendering and firmware validation. |
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, but uses SST's SuperFlash technology with faster 18 µs program time and 18 ms sector erase; requires different command set. | Supports both x8/x16 modes via BYTE pin; includes RDY/BUSY pin - unlike AT49BV160T-70TI. | Preferred where faster erase or RDY/BUSY signaling is required; requires firmware adaptation due to non-Atmel command protocol. |
| MX29LV160ETTI-70G | 16Mbit, 70 ns, 3.0V operation; offers top/bottom boot block configuration like AT49BV160T-70TI, but lacks VPP acceleration and suspend/resume. | No VPP pin or suspend capability; simpler command set but no sector lockdown or 128-bit protection register. | Cost-optimized alternative for basic boot storage where advanced security and real-time update features are unnecessary. |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160ETTI-70G, the AT49BV160T-70TI uniquely combines VPP-accelerated programming, hardware-enforced sector lockdown, and full suspend/resume - making it optimal for safety-critical or field-upgradable embedded systems requiring robust firmware integrity.
Availability
AT49BV160T-70TI is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, medical diagnostics, and automotive infotainment systems requiring stable component supply across extended product lifecycles.
Supply support for AT49BV160T-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 memory, and security ICs for industrial, automotive, and IoT markets.
The AT49BV160T-70TI belongs to Atmel's parallel Flash memory product line designed specifically for reliable, in-system programmable boot code storage in resource-constrained embedded systems with stringent reliability and security requirements.
FAQ
What is the correct power-up sequence for AT49BV160T-70TI to ensure reliable operation?
The AT49BV160T-70TI requires VCC to stabilize within 2.65–3.3V before applying valid control signals. A minimum 10 ms VCC power-on delay is internally enforced before accepting commands. RESET must be held low for ≥500 ns after VCC reaches regulation to initialize the device. Applying CE/OE/WE before VCC stabilization may cause undefined behavior or latch-up. Always verify VCC ramp rate exceeds 1 V/ms per datasheet Rev. 1427L.
Does AT49BV160T-70TI support byte-mode operation like the AT49BV161T variant?
No, AT49BV160T-70TI operates exclusively in x16 word mode and does not support byte-mode operation. Unlike the AT49BV161T, it lacks a BYTE pin and cannot configure I/O0–I/O7 as an 8-bit bus. All 16 data lines (I/O0–I/O15) are active simultaneously, and the device ignores A-1 addressing. This fixed x16 configuration simplifies interface design for processors with 16-bit external memory buses.
How is sector lockdown implemented and verified on AT49BV160T-70TI?
Sector lockdown on AT49BV160T-70TI is enabled per-sector using the six-cycle Sector Lockdown command (555H/AAH, AAH/55H, 555H/80H, 555H/AAH, AAH/55H, SA/60H). Once locked, the sector becomes read-only until power cycle or RESET. Verification is performed in Software Product Identification mode: reading address 00002H within a sector returns I/O0 = 1 if locked, I/O0 = 0 if unlocked. Lockdown status persists through power loss but resets on hardware reset.
Can AT49BV160T-70TI be used without connecting the VPP pin?
Yes, AT49BV160T-70TI can operate without VPP connection, using VCC (2.65–3.3V) for standard program/erase operations. However, VPP must not be left floating - it must be tied to GND or VCC to prevent noise-induced malfunction. When VPP is unconnected or grounded, program time remains 20 µs and sector erase time stays at 300 ms. VPP is only required to achieve accelerated timing (e.g., 12V → ~5 µs program).
What status monitoring methods are available on AT49BV160T-70TI since it lacks RDY/BUSY pin?
AT49BV160T-70TI relies solely on polling-based status detection: Data Polling (I/O7 toggles/complements during operation), Toggle Bit (I/O6 toggles), and status bits on I/O2–I/O5. The I/O7 polling method is most commonly used - reading the target address returns complemented data until completion, then true data. All status bits require checking I/O3 (VPP OK) and I/O5 (operation success) in conjunction per Figures 1–4 in datasheet Rev. 1427L.
AT49BV160T-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 ~ 3.3V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
AT49BV160T-70TI FAQ
1.How can I place an order for AT49BV160T-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV160T-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 AT49BV160T-70TI reliable?
The price and inventory of AT49BV160T-70TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV160T-70TI is usually 5 days.
3.What payment methods are accepted for AT49BV160T-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV160T-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV160T-70TI?
AT49BV160T-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV160T-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 AT49BV160T-70TI?
For technical support, including AT49BV160T-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV160T-70TI requirements.
6.How does Aetrix verify that AT49BV160T-70TI is sourced from the original manufacturer or authorized distributors?
All AT49BV160T-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 AT49BV160T-70TI meets industry standards.
7.What is the process for return or replacement of AT49BV160T-70TI?
All AT49BV160T-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV160T-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 AT49BV160T-70TI part is unused and in its original packaging.
Return procedure for AT49BV160T-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV160T-70TI Tags
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