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Microchip Technology AT49BV160T-70CI
- Part No.:
- AT49BV160T-70CI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 45-TFBGA, CSBGA
- Datasheet:
-
AT49BV160T-70CI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 45CBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,329
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Product details
Overview
AT49BV160T-70CI from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) 3.0V-only parallel Flash memory IC used for nonvolatile code and data storage in embedded systems. It features 70 ns access time, sector erase architecture with 31 × 64 KB + 8 × 8 KB sectors, 20 µs word program time, and supports in-system programming via single 2.65–3.3V supply. It is commonly deployed in boot code storage for industrial controllers and legacy microprocessor-based designs.
For engineers reviewing the AT49BV160T-70CI datasheet, AT49BV160T-70CI pinout, AT49BV160T-70CI application, or AT49BV160T-70CI equivalent, key selection considerations include TSOP-48 package compatibility, 70 ns read timing, sector lockdown capability for secure boot regions, VPP-assisted accelerated erase/program, and RDY/BUSY signal support (note: RDY/BUSY is present on AT49BV161(T) but not functional on AT49BV160T per datasheet Rev. 1427L).
Technical Context
The AT49BV160T-70CI implements a command-register-based parallel Flash architecture with internal write state machine, supporting byte/word programming and sector/chip erase via six-byte software command sequences. It uses dual-voltage VPP control (1.65–12.0V) to enable standard or accelerated programming/erase modes.
Its sector erase architecture divides memory into 39 independently lockable sectors (31 × 64 KB + 8 × 8 KB), each configurable for individual write protection. The device powers up in read mode and relies on CE/OE/WE control logic to avoid bus contention-no external clock or address latching circuitry required.
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 - single-supply operation enables direct interface with 3.3V microcontrollers without level shifters |
| Program Time | 20 µs per word - enables fast field firmware updates when combined with suspend/resume capability |
| Sector Erase Time | 300 ms max per sector - deterministic timing allows precise timeout handling in host firmware |
| Standby Current | 10 µA - supports low-power retention in battery-backed or energy-sensitive applications |
| Operating Temp | -40°C to +85°C - qualified for industrial temperature range ('C' grade suffix) |
Pinout & Package
AT49BV160T-70CI is packaged in a 48-pin Thin Small Outline Package (TSOP Type I), 12 × 20 mm body, 0.5 mm pitch. Pinout conforms to JEDEC MO-141AC standard for 48-pin Flash devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing; A-1 function not used in AT49BV160T (word-only mode) |
| I/O0–I/O15 | Data Bus (x16) | 16-bit bidirectional data path; operates exclusively in word mode (BYTE pin not implemented on AT49BV160T) |
| 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 prevent bus contention during multi-device sharing |
| WE | Write Enable | Active-low write strobe; latches command/data on rising edge during programming/erase sequences |
| VPP | Program/Erase Voltage | Enables accelerated operations at 5V or 12V; inhibits programming if < 0.8V; ignored if within ±0.3V of VCC |
| RESET | Hardware Reset | Halts ongoing program/erase and forces high-impedance outputs; required to exit suspend or error states |
| RDY/BUSY | Status Output | Open-drain active-low signal - not functional on AT49BV160T per datasheet; reserved for AT49BV161(T) variants |
| VCCQ | Output Power | Separate 3.3V supply for I/O drivers; must tie to VCC for standard operation; enables mixed-voltage I/O interfacing |
Key Features
| Feature | Design Value |
|---|---|
| Sector Lockdown | Per-sector hardware write protection prevents accidental overwrite of boot code or calibration data after power-up |
| Erase/Program Suspend | Allows interruption of long erase (300 ms) or program cycles to service real-time reads from other sectors |
| 128-bit Protection Register | Factory-programmed 64-bit block + user-programmable/lockable 64-bit block for secure system identification or licensing |
| VPP-Assisted Acceleration | Reduces program/erase times by >50% when VPP = 5V or 12V, enabling faster production programming |
| Hardware Data Protection | Five-layer safeguarding including VCC sense, noise filtering (<15 ns pulses rejected), and control-line inhibit logic |
Applications
| Industrial PLC Firmware Storage | Legacy Automotive ECU Boot Memory |
|---|---|
Use Scenario: Storing boot loader and safety-critical firmware in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile parallel Flash memory providing x16 interface to 16-bit microcontroller bus; 70 ns access ensures deterministic boot timing. Use Value: Sector lockdown protects bootloader integrity across power cycles; 10 µA standby current extends uptime in unpowered standby states. | Use Scenario: Holding calibrated engine control parameters and fail-safe startup routines in pre-2010 automotive ECUs with 3.3V bus architecture. IC Role / Device Role / Timing Role: Primary boot memory mapped directly to CPU address space; CE/OE dual-control eliminates need for bus arbitration logic. Use Value: Single 2.65–3.3V supply simplifies power design; 31 × 64 KB sectors allow granular firmware update without full chip erase. |
| Medical Device Configuration Storage | Avionics Display System Code Memory |
Use Scenario: Retaining device-specific calibration tables and regulatory-compliant configuration profiles in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, lockable Flash memory storing encrypted parameter sets; 128-bit protection register binds configuration to hardware identity. Use Value: Sector erase isolation prevents corruption of critical calibration data during field updates; VPP acceleration reduces service downtime. | Use Scenario: Hosting display initialization firmware and font assets in certified cockpit display units requiring DO-254 compliance. IC Role / Device Role / Timing Role: High-reliability parallel Flash memory with industrial temp rating (-40°C to +85°C) and proven radiation-tolerant process. Use Value: Hardware RESET input enables deterministic recovery from brown-out events; suspend/resume avoids missed display refresh deadlines during firmware patching. |
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 (16 Mbit), 70 ns access, 3.0–3.6V supply; lacks VPP pin and sector lockdown; uses different command set | No hardware sector protection; requires software-managed erase locking; no accelerated program mode | Select when VPP complexity is undesirable and full sector lockdown is not required for security. |
| MX29LV160DBTI-70G | 16 Mbit, 70 ns, 3.0V core; includes RDY/BUSY pin and CFI-compliant command set; supports both top/bottom boot blocks | Functional RDY/BUSY output improves interrupt-driven firmware efficiency; broader industry toolchain support than proprietary Atmel commands | Prefer for new designs needing standardized CFI interface, robust status signaling, and wider ecosystem tool support. |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160DBTI-70G, the AT49BV160T-70CI offers unique VPP-accelerated erase/program and factory-verified sector lockdown-but requires Atmel-specific command sequences and lacks RDY/BUSY functionality, making it best suited for legacy maintenance rather than greenfield development.
Availability
AT49BV160T-70CI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy automotive ECU boot memory, and medical device configuration storage requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for AT49BV160T-70CI 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 aerospace markets.
The AT49BV160T-70CI belongs to Atmel's parallel Flash memory product line, designed specifically for reliable, in-system programmable nonvolatile storage in resource-constrained 16-bit embedded systems with strict timing and security requirements.
FAQ
Does AT49BV160T-70CI support RDY/BUSY signaling?
No, AT49BV160T-70CI does not implement functional RDY/BUSY output. Although the pin exists on the TSOP-48 package, the datasheet (Rev. 1427L, page 9) explicitly states that RDY/BUSY is only active on AT49BV161(T) variants. For AT49BV160T-70CI, end-of-operation detection must rely on Data Polling (I/O7), Toggle Bit (I/O6), or the VPP/erase-program status bits (I/O3/I/O5). This distinction is critical when porting firmware from AT49BV161-based designs.
What is the role of the BYTE pin on AT49BV160T-70CI?
The BYTE pin is not used on AT49BV160T-70CI. Per datasheet section 3, the AT49BV160(T) family operates exclusively in word mode (x16), with I/O0–I/O15 always active. The BYTE pin is only functional on AT49BV161(T) variants to toggle between byte (x8) and word (x16) configurations. On AT49BV160T-70CI, the BYTE pin is a no-connect (NC) and must be left unconnected or tied to VCC/GND per board layout constraints-no functional impact on operation.
Can AT49BV160T-70CI be programmed using only VCC, without VPP?
Yes, AT49BV160T-70CI supports standard programming and erasing using only the VCC supply (2.65–3.3V). VPP is optional: when VPP is ≤ VCC or < 1.65V, the device automatically selects VCC for all program/erase operations. VPP becomes active only when driven to 5.0V ± 0.5V or 12.0V ± 0.5V, enabling accelerated timing. Leaving VPP unconnected or tied to VCC is acceptable for standard-speed operation, but VPP must never be left floating per datasheet requirement.
How does sector lockdown work on AT49BV160T-70CI, and can it be reversed?
Sector lockdown on AT49BV160T-70CI is enabled per sector via the six-cycle "Sector Lockdown" command (SA + 60H). Once locked, a sector becomes permanently read-only until the next power cycle or hardware RESET. Unlike some Flash devices, there is no software unlock command-the lockdown state resets only on power-up or RESET assertion. This provides tamper-resistant protection for boot code but requires careful sequencing during field updates to avoid accidental lockdown of active sectors.
Is AT49BV160T-70CI compatible with 5V-tolerant microcontrollers?
Yes, AT49BV160T-70CI supports 5V-tolerant address and control inputs (A0–A19, CE, OE, WE, RESET) when operating from 2.65–3.3V VCC, per datasheet "Input Levels" section (page 9). However, I/O pins are not 5V-tolerant: they must remain within 0–(VCC + 0.6V). Therefore, direct connection to 5V microcontrollers requires level translation on the I/O bus, while control/address lines may interface directly. This simplifies integration with mixed-voltage systems where only the data path needs translation.
AT49BV160T-70CI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 45-TFBGA, CSBGA
- 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:
- 45-CBGA (6.5x7.5)
AT49BV160T-70CI FAQ
1.How can I place an order for AT49BV160T-70CI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV160T-70CI 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-70CI reliable?
The price and inventory of AT49BV160T-70CI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV160T-70CI is usually 5 days.
3.What payment methods are accepted for AT49BV160T-70CI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV160T-70CI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV160T-70CI?
AT49BV160T-70CI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV160T-70CI 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-70CI?
For technical support, including AT49BV160T-70CI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV160T-70CI requirements.
6.How does Aetrix verify that AT49BV160T-70CI is sourced from the original manufacturer or authorized distributors?
All AT49BV160T-70CI 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-70CI meets industry standards.
7.What is the process for return or replacement of AT49BV160T-70CI?
All AT49BV160T-70CI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV160T-70CI, 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-70CI part is unused and in its original packaging.
Return procedure for AT49BV160T-70CI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV160T-70CI Tags
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