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Microchip Technology AT49BV160-70TI
- Part No.:
- AT49BV160-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV160-70TI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,002
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Product details
Overview
AT49BV160-70TI from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) single-supply 3.0V Flash memory IC with 70 ns access time, sector erase architecture (31 × 64 KB + 8 × 8 KB), and suspend/resume capability for in-system programming. It operates in word mode only and supports boot-block configuration for embedded firmware storage in industrial controllers and legacy communication modules.
For engineers reviewing the AT49BV160-70TI datasheet, AT49BV160-70TI pinout, AT49BV160-70TI application, or AT49BV160-70TI equivalent, key selection criteria include TSOP-48 package compatibility, 2.65–3.3V VCC operation, sector lockdown security, RDY/BUSY status signaling, and hardware data protection against inadvertent writes during power transitions.
Technical Context
The AT49BV160-70TI implements a command-register-based Flash architecture with internal write state machine, enabling chip/sector erase and byte/word programming via six-byte software command sequences. It features dual-voltage program/erase control via VPP (1.65V–12V) and includes a 128-bit factory/user-programmable protection register with lockable Block B.
Its sector erase architecture divides memory into 39 independently lockable sectors (31 × 64 KB + 8 × 8 KB), supporting Erase Suspend/Resume and Program Suspend/Resume functions - allowing concurrent read from one sector while erasing/programming another. The device powers on in read mode and uses CE/OE/WE control logic to prevent bus contention.
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 - guarantees deterministic read latency for real-time firmware fetch in microcontroller boot loaders |
| VCC Operating Range | 2.65 V to 3.3 V - enables direct interface with 3.3V logic without level-shifting in legacy embedded systems |
| Program Time | 20 µs per word - supports rapid field updates of configuration data or calibration tables |
| Sector Erase Time | 300 ms max per sector - allows selective firmware patching without full reflash downtime |
| Standby Current | 10 µA - minimizes quiescent power in battery-backed or always-on industrial monitoring nodes |
| Package | 48-pin TSOP Type I - industry-standard footprint compatible with existing PCB layouts for 3.3V Flash replacements |
Pinout & Package
AT49BV160-70TI is packaged in a 48-pin Thin Small Outline Package (TSOP Type I), 12 × 20 mm body, 0.5 mm 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 used (word-mode-only device) |
| I/O0–I/O15 | Data I/O (x16) | 16-bit bidirectional data bus; no byte-mode support - eliminates BYTE pin dependency and simplifies controller interface |
| CE | Chip Enable | Active-low enable controlling device selection; must be low with OE low and WE high for valid read access |
| OE | Output Enable | Active-low output gate; used with CE to avoid bus contention during multi-device sharing |
| WE | Write Enable | Active-low control for command latching and programming cycles; rising edge latches data in command sequences |
| RDY/BUSY | Open-drain Status Output | Actively pulled low during internal program/erase; released high at completion - enables hardware polling without software overhead |
| VPP | Program/Erase Voltage Input | Enables accelerated programming (5V/12V) or standard VCC-based operation; <0.8V inhibits writes for hardware lockout |
| RESET | Hardware Initialization | Asynchronous reset halting ongoing operations and forcing high-Z outputs - critical for safe recovery after power brownout |
Key Features
| Feature | Design Value |
|---|---|
| Sector Lockdown | Per-sector write-protection enabled via 6-cycle command; prevents accidental overwrite of boot code while permitting runtime update of application sectors |
| Erase/Program Suspend | 15 µs suspend latency enables real-time interrupt handling - e.g., reading sensor data from non-erasing sector during firmware sector erase |
| Hardware Data Protection | VCC sense (<1.8V inhibit), noise filtering (<15 ns pulse rejection), and VPP voltage validation prevent spurious writes during power-up/down or EMI events |
| 128-bit Protection Register | Factory-programmed 64-bit Block A + user-programmable/lockable 64-bit Block B - supports secure key storage and anti-cloning in certified industrial devices |
| Top/Bottom Boot Configuration | Fixed boot-block layout (SA0–SA7 = 8K sectors) allows direct mapping to CPU reset vector fetch without address remapping logic |
Applications
| Industrial PLC Firmware Storage | Legacy Telecom Line Card Boot Memory |
|---|---|
|
Use Scenario: Storing boot loader and FPGA configuration bitstream in programmable logic controllers requiring field-upgradable firmware without external programming hardware. IC Role / Device Role / Timing Role: Nonvolatile x16 Flash memory providing deterministic 70 ns instruction fetch timing for ARM7 or ColdFire MCU reset vector execution. Use Value: Sector lockdown protects bootloader integrity; suspend/resume enables background firmware patching during runtime diagnostics without system halt. |
Use Scenario: Holding DSP firmware and protocol stack binaries in TDM-based line cards where hot-swap capability and long-term data retention (>20 years) are mandated. IC Role / Device Role / Timing Role: Primary boot memory mapped to CPU address space; RDY/BUSY pin synchronizes firmware load with system clock domain. Use Value: 10 µA standby current extends backup battery life; 300 ms sector erase enables incremental feature updates without service interruption. |
| Medical Device Calibration Storage | Automotive Body Control Module EEPROM Replacement |
|
Use Scenario: Retaining calibrated sensor offsets and safety-critical thresholds in Class II medical instruments subject to IEC 62304 software lifecycle requirements. IC Role / Device Role / Timing Role: Secure nonvolatile storage with 128-bit protection register used to store cryptographic keys for firmware signature verification. Use Value: Factory-programmed Block A ensures traceability; user-lockable Block B prevents tampering with calibration data post-certification. |
Use Scenario: Replacing parallel EEPROM in legacy BCM designs needing higher density, faster write performance, and extended temperature tolerance (–40°C to +85°C). IC Role / Device Role / Timing Role: Directly interfaced to 8051 or RL78 MCU via standard address/data bus; CE/OE timing matches legacy EEPROM access profiles. Use Value: 20 µs word program time reduces calibration write duration by >90% vs. EEPROM; TSOP-48 footprint enables drop-in replacement without PCB redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF1601-70-4C-EKE | 16 Mbit x16, 70 ns, 2.7–3.6V VCC, same TSOP-48 pinout but lacks VPP pin and sector suspend/resume | No hardware-accelerated erase; no RDY/BUSY pin - requires software polling via toggle bit only | Choose when VPP complexity and suspend features are unnecessary; verify command set compatibility before migration |
| MX29LV160ETTI-70G | 16 Mbit x16, 70 ns, 2.7–3.6V VCC, TSOP-48, includes CFI query support and 12V VPP option but no 128-bit protection register | Supports Common Flash Interface for auto-detection; lacks factory-programmed Block A for traceability | Select for systems requiring BIOS-style flash autodetection; avoid if regulatory compliance mandates immutable factory ID storage |
Compared with SST39VF1601-70-4C-EKE and MX29LV160ETTI-70G, the AT49BV160-70TI uniquely combines hardware VPP acceleration, sector suspend/resume, and factory-sealed 64-bit identity - making it optimal for safety-critical firmware storage where deterministic timing, secure boot, and field update resilience are mandatory.
Availability
AT49BV160-70TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy telecom line card boot memory, medical device calibration storage, and automotive body control module EEPROM replacement requiring stable component supply across extended product lifecycles.
Supply support for AT49BV160-70TI 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 technical support, documentation, and manufacturing continuity for the AT49BV/LV Flash family.
The AT49BV160-70TI belongs to Atmel's legacy parallel Flash product line, designed specifically for cost-sensitive, high-reliability embedded systems requiring in-system programmability, sector-level security, and long-term data retention without external high-voltage circuitry.
FAQ
What is the operating voltage range for AT49BV160-70TI?
The AT49BV160-70TI operates from 2.65 V to 3.3 V on VCC. Its VPP pin accepts 1.65 V to 12.0 V for accelerated programming/erasing, but VPP < 0.8 V disables all write operations. The device includes VCC sense circuitry that inhibits programming if VCC drops below ~1.8 V, ensuring robustness during power transitions. This dual-voltage design makes AT49BV160-70TI suitable for systems with marginal 3.3V rails or requiring optional high-speed programming.
Does AT49BV160-70TI support byte-mode operation?
No, AT49BV160-70TI operates exclusively in word mode (x16) and does not support byte-mode (x8) operation. Unlike the AT49BV161(T) variant, it lacks the BYTE pin and associated logic - I/O0–I/O15 are always active, and A-1 functionality is unused. This simplifies interface design for 16-bit microcontrollers but precludes direct use with 8-bit data buses without external multiplexing. The AT49BV160-70TI datasheet explicitly states "the device always operates in the word mode" for this pinout configuration.
How does sector lockdown work on AT49BV160-70TI?
Sector lockdown on AT49BV160-70TI is enabled per sector using a six-bus-cycle command (555H/AAH → AAH/55H → 555H/80H → 555H/AAH → AAH/55H → SA/60H). Once locked, a sector becomes permanently read-only until the next power cycle or RESET assertion. Lockdown prevents both erase and program operations, protecting boot code or calibration data. Detection is possible via software product ID mode: reading address 00002H within a sector returns I/O0 = high if locked. AT49BV160-70TI supports lockdown across all 39 sectors.
What status signals indicate program/erase completion on AT49BV160-70TI?
AT49BV160-70TI provides three concurrent status mechanisms: (1) RDY/BUSY pin - open-drain output pulled low during internal operations; (2) Data Polling on I/O7 - complements written data during programming, then returns true data upon completion; (3) Toggle Bit on I/O6 - toggles between 0/1 during operation and stabilizes when complete. All methods require checking I/O5 (erase/program status) and I/O3 (VPP status) to confirm success. The RDY/BUSY signal is hardware-native and requires no software polling overhead for AT49BV160-70TI.
Is AT49BV160-70TI RoHS compliant and lead-free?
Yes, AT49BV160-70TI is RoHS-compliant and lead-free. Per Microchip's official product change notices and packaging documentation, the TSOP-48 package uses matte tin (Sn) lead finish and meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3) requirements. The "-TI" suffix denotes industrial temperature grade (–40°C to +85°C) and Pb-free construction. Full compliance documentation, including test reports and substance declarations, is available through Microchip's quality portal for AT49BV160-70TI.
AT49BV160-70TI 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
AT49BV160-70TI FAQ
1.How can I place an order for AT49BV160-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV160-70TI 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 AT49BV160-70TI reliable?
The price and inventory of AT49BV160-70TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV160-70TI is usually 5 days.
3.What payment methods are accepted for AT49BV160-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV160-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV160-70TI?
AT49BV160-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV160-70TI 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 AT49BV160-70TI?
For technical support, including AT49BV160-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV160-70TI requirements.
6.How does Aetrix verify that AT49BV160-70TI is sourced from the original manufacturer or authorized distributors?
All AT49BV160-70TI 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 AT49BV160-70TI meets industry standards.
7.What is the process for return or replacement of AT49BV160-70TI?
All AT49BV160-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV160-70TI, 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 AT49BV160-70TI part is unused and in its original packaging.
Return procedure for AT49BV160-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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