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Microchip Technology AT49BV1614AT-70TI
- Part No.:
- AT49BV1614AT-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV1614AT-70TI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,688
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Product details
Overview
AT49BV1614AT-70TI from Microchip Technology (formerly Atmel) is a 16-megabit (1M × 16 / 2M × 8) 3.3V Flash memory IC with sector erase architecture, 70 ns access time, and dual-plane concurrent read/program-erase capability. It supports byte/word mode via BYTE pin, features erase suspend/resume, and operates in industrial temperature range (−40°C to +85°C) for embedded firmware storage in microcontroller-based systems.
For engineers reviewing the AT49BV1614AT-70TI datasheet, AT49BV1614AT-70TI pinout, AT49BV1614AT-70TI application, or AT49BV1614AT-70TI equivalent, key selection considerations include its 48-pin TSOP package, VPP-accelerated programming (5V/12V), 128-bit protection register, and sector lockdown for secure boot code retention.
Technical Context
The AT49BV1614AT-70TI implements a dual-plane Flash architecture: Plane A contains eight 4K-word and seven 32K-word sectors; Plane B contains twenty-four 32K-word sectors. This enables concurrent read from one plane while program/erase executes in the other - eliminating read latency during background updates.
Its command-set-driven operation uses six-byte sequences for chip/sector erase and lockdown, and supports hardware reset-initiated recovery from suspended erase or failed programming. The RDY/BUSY open-drain output, Data Polling (I/O7), and Toggle Bit (I/O6/I/O2) provide three independent methods to detect operation completion without polling overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16 or 2,097,152 × 8) - supports firmware images up to 2 MB in byte mode or 1 MB in word mode |
| Access Time | 70 ns - enables direct execution from Flash (XIP) in timing-critical MCU boot paths |
| Supply Voltage | 2.65V–3.3V - compatible with modern low-voltage I/O domains and eliminates need for level shifters |
| Sector Architecture | 39 sectors (31 × 64 KB + 8 × 8 KB) - allows granular firmware partitioning (e.g., bootloader, app, config) |
| Program/Erase Speed | 20 µs/word; 300 ms/sector - balances update speed against write endurance and power burst requirements |
| Operating Temp | −40°C to +85°C - qualified for industrial control, automotive body electronics, and networking equipment |
| Package | 48-pin TSOP Type I (12 × 20 mm) - surface-mount compatible with standard reflow profiles and automated assembly |
Pinout & Package
AT49BV1614AT-70TI is packaged in a 48-pin Thin Small Outline Package (TSOP Type I), pin-compatible with industry-standard JEDEC MO-141AC. Pin 1 is marked by a 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 on I/O15 in byte mode |
| I/O0–I/O15 | Data I/O (x16) / I/O0–I/O7 + A-1 (x8) | Configurable data bus: BYTE=1 → x16; BYTE=0 → x8 with I/O15 repurposed as LSB address |
| CE, OE, WE | Chip Enable, Output Enable, Write Enable | Three-control read interface prevents bus contention; CE+OE low + WE high = read mode |
| RDY/BUSY | Open-drain status output | Active-low indicates ongoing program/erase; supports wired-OR of multiple devices on shared bus |
| VPP | Accelerated Program/Erase Supply | Accepts 5.0V ±0.5V or 12.0V ±0.5V to reduce tBP/tSEC; left unconnected for VCC-only operation |
| RESET | Hardware initialization input | Pulling low halts current operation and forces high-Z outputs; required to exit Single Pulse Program mode |
| BYTE | Bus width select | Logic high = 16-bit word mode; logic low = 8-bit byte mode with tri-stated I/O8–I/O14 |
| VCC, VCCQ, VSS | Core, I/O, and ground supplies | VCCQ decoupling enables mixed-voltage I/O (e.g., 3.3V core / 1.8V I/O) when regulated separately |
Key Features
| Feature | Design Value |
|---|---|
| Dual-plane concurrent operation | Enables real-time firmware updates: read active application from Plane B while erasing/programming Plane A |
| Erase suspend/resume | Interrupts sector erase to service urgent reads or writes elsewhere in same plane - critical for deterministic response in RTOS |
| 128-bit protection register | Factory-programmed 64-bit block A + user-writable/lockable block B - secures device identity and cryptographic keys |
| Sector lockdown | Per-sector write-protection activated via command; preserves bootloader integrity across field firmware upgrades |
| Hardware data protection | VCC sense, 10 ms power-on delay, noise filtering (<15 ns), and control-line inhibit prevent accidental writes |
Applications
| Industrial PLC Firmware Storage | Automotive Body Control Module |
|---|---|
Use Scenario: Storing ladder logic programs and configuration parameters in programmable logic controllers requiring field-upgradable nonvolatile memory. IC Role / Device Role / Timing Role: Primary firmware storage with sector-lockdown protecting boot loader and safety-critical routines. Use Value: Concurrent read/erase allows runtime updates without stopping machine control cycles; 70 ns access ensures deterministic scan times. | Use Scenario: Holding vehicle-specific calibration data, lighting control algorithms, and diagnostic firmware in body domain ECUs. IC Role / Device Role / Timing Role: Secure, temperature-hardened Flash for ASIL-B compliant subsystems with over-the-air update capability. Use Value: Erase suspend enables immediate response to door lock/unlock commands during background firmware validation; 128-bit register stores VIN-locked calibration keys. |
| Network Router Boot Memory | Medical Infusion Pump Firmware |
Use Scenario: Hosting bootloader, Linux kernel, and root filesystem in embedded network infrastructure equipment with remote management. IC Role / Device Role / Timing Role: Dual-plane Flash acting as XIP-capable boot device interfaced to ARM Cortex-A series processors. Use Value: 70 ns tACC supports zero-wait-state execution; VPP acceleration reduces firmware patch time during maintenance windows. | Use Scenario: Storing FDA-certified drug delivery algorithms, calibration tables, and audit logs in Class II medical devices. IC Role / Device Role / Timing Role: Tamper-resistant firmware repository with sector lockdown and protection register for regulatory traceability. Use Value: Hardware data protection prevents corruption during ESD events; industrial temp rating ensures reliability in hospital environments. |
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 | Single-plane architecture; no erase suspend; 48-pin TSOP but different pinout (no VPP, no BYTE) | Lacks concurrent read/erase and sector lockdown - unsuitable for real-time update scenarios | Select only if system requires simpler command set and does not need dual-plane or secure boot features |
| MX29LV160ETTI-70G | Same density and 48-pin TSOP; supports CFI, but no VPP pin or 128-bit protection register | CFI compliance simplifies driver porting; lacks hardware-level sector lockdown and erase suspend | Prefer for legacy BIOS/UEFI platforms needing CFI support, but verify bootloader compatibility with missing security features |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160ETTI-70G, the AT49BV1614AT-70TI uniquely delivers concurrent dual-plane operation, hardware-enforced sector lockdown, and a factory-programmed 128-bit identity register - making it the only option among the three qualified for secure, real-time firmware update architectures.
Availability
AT49BV1614AT-70TI is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical device manufacturing requiring stable component supply and long-term lifecycle assurance.
Supply support for AT49BV1614AT-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 the AT49BV/LV Flash family, including obsolescence mitigation and extended product change notifications.
The AT49BV/LV1614A(T) series was designed specifically for embedded systems requiring secure, in-system programmable Flash with real-time update capabilities - targeting applications where firmware integrity, field upgradeability, and deterministic timing are critical.
FAQ
What voltage levels are required for VPP to accelerate programming on the AT49BV1614AT-70TI?
The AT49BV1614AT-70TI requires VPP = 5.0V ± 0.5V or 12.0V ± 0.5V to enable accelerated program/erase operations. If VPP is unconnected or ≤ VCC, the device defaults to VCC-powered operation. Applying VPP within 0.3V of VCC (e.g., 3.0V VCC with 3.2V VPP) causes automatic fallback to VCC - ensuring robustness against marginal supply conditions. The AT49BV1614AT-70TI datasheet specifies these thresholds in the "VPP PIN" section.
How does the BYTE pin affect data bus configuration in the AT49BV1614AT-70TI?
When BYTE = high, the AT49BV1614AT-70TI operates in 16-bit word mode: I/O0–I/O15 are active data lines. When BYTE = low, it switches to 8-bit byte mode: only I/O0–I/O7 carry data, I/O8–I/O14 are tri-stated, and I/O15 functions as A-1 (LSB address). This dual-mode flexibility allows the same AT49BV1614AT-70TI to interface with both 8-bit and 16-bit microcontrollers without external glue logic.
Can the AT49BV1614AT-70TI perform read operations during an erase cycle?
Yes - the AT49BV1614AT-70TI's dual-plane architecture permits concurrent read from one memory plane while erasing or programming the other. For example, reading from Plane B is fully functional during a Plane A sector erase. If the target read sector resides in the same plane undergoing erase, the Erase Suspend command must first be issued to pause the erase and enable safe access - a capability confirmed in the "Erase Suspend/Resume" section of the AT49BV1614AT-70TI datasheet.
What is the purpose of the 128-bit protection register in the AT49BV1614AT-70TI?
The AT49BV1614AT-70TI's 128-bit protection register comprises two 64-bit blocks: Block A is factory-programmed with a unique, unchangeable identifier; Block B is user-programmable and lockable to store cryptographic keys or device-specific secrets. Once Block B is locked, its contents become read-only - preventing tampering while enabling secure boot verification. This feature is documented in the "128-BIT PROTECTION REGISTER" section of the AT49BV1614AT-70TI datasheet.
Does the AT49BV1614AT-70TI support hardware reset recovery from failed programming?
Yes - asserting RESET low during a program or erase cycle halts the operation and places all outputs in high-impedance state. Upon release, the AT49BV1614AT-70TI returns to read or standby mode, clearing internal state. This provides deterministic recovery from power glitches or watchdog timeouts. The AT49BV1614AT-70TI RESET functionality is detailed in the "RESET" subsection under "Device Operation", confirming its role in fault containment and system stability.
AT49BV1614AT-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:
- 50µs
- 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
AT49BV1614AT-70TI FAQ
1.How can I place an order for AT49BV1614AT-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV1614AT-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 AT49BV1614AT-70TI reliable?
The price and inventory of AT49BV1614AT-70TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV1614AT-70TI is usually 5 days.
3.What payment methods are accepted for AT49BV1614AT-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV1614AT-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV1614AT-70TI?
AT49BV1614AT-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV1614AT-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 AT49BV1614AT-70TI?
For technical support, including AT49BV1614AT-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV1614AT-70TI requirements.
6.How does Aetrix verify that AT49BV1614AT-70TI is sourced from the original manufacturer or authorized distributors?
All AT49BV1614AT-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 AT49BV1614AT-70TI meets industry standards.
7.What is the process for return or replacement of AT49BV1614AT-70TI?
All AT49BV1614AT-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV1614AT-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 AT49BV1614AT-70TI part is unused and in its original packaging.
Return procedure for AT49BV1614AT-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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