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Microchip Technology AT49BV1614-90TC
- Part No.:
- AT49BV1614-90TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV1614-90TC.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,106
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Product details
Overview
AT49BV1614-90TC from Atmel (now Microchip) is a 16-Mbit (1M × 16 / 2M × 8) 2.7–3.3 V flash memory IC with 90 ns access time, dual-plane architecture enabling concurrent read-while-write/erase, and sector erase capability across 40 independently lockable sectors. It supports byte/word programming, erase suspend/resume, and operates in TSOP-48 package for embedded firmware storage in industrial controllers.
For engineers reviewing the AT49BV1614-90TC datasheet, AT49BV1614-90TC pinout, AT49BV1614-90TC application, or AT49BV1614-90TC equivalent, key selection criteria include its 90 ns read timing, 20 µs word program time, 200 ms sector erase time, dual-plane concurrency, and sector-level write protection - all critical for real-time firmware update systems requiring nonvolatile code storage with partial reprogrammability.
Technical Context
The AT49BV1614-90TC implements a two-plane memory architecture: Plane A contains eight 4K-word, two 16K-word, and six 32K-word sectors; Plane B contains twenty-four 32K-word sectors. This enables simultaneous read from one plane while programming or erasing the other - eliminating wait states during firmware updates.
It features hardware-based sector lockout (enabled via six-byte command sequence), erase suspend/resume (15 µs latency), and three end-of-operation detection methods: RDY/BUSY pin, data polling on I/O7, and toggle bit on I/O6/I/O2. The BYTE pin selects x8 (I/O0–I/O7 active, I/O15 = A−1) or x16 (I/O0–I/O15 active) data bus configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16-bit or 2,097,152 × 8-bit) - supports full boot code + application image in single device |
| Access Time | 90 ns - meets timing requirements for 11 MHz bus interfaces without wait states |
| Word Program Time | 20 µs - enables rapid field firmware patching of individual code segments |
| Sector Erase Time | 200 ms - allows selective reprogramming of functional modules without full chip erase |
| Active Current | 25 mA - compatible with low-power 3.3 V supply rails in battery-backed systems |
| Standby Current | 10 µA - supports ultra-low-power sleep modes in always-on embedded devices |
| Dual-Plane Concurrency | Read from Plane B while programming/erasing Plane A - eliminates system stall during background updates |
Pinout & Package
AT49BV1614-90TC is packaged in a 48-pin Thin Small Outline Package (TSOP Type I, 12 × 20 mm, 0.5 mm pitch), compliant with JEDEC MO-141BA. Pin functions are electrically and mechanically defined per Atmel datasheet Rev. 0925K–09/00.
| 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) / I/O0–I/O7 + A−1 (x8) | Configurable 8- or 16-bit data interface; BYTE pin selects mode - critical for legacy 8-bit microcontroller integration |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for read access - prevents bus contention in multi-device systems |
| OE | Output Enable | Active-low output control; used with CE to gate data outputs - enables shared bus arbitration |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences - timing-critical for reliable programming |
| RDY/BUSY | Open-drain status output | Low during internal program/erase; supports wired-OR monitoring of multiple flash devices on same line |
| RESET | Hardware reset input | Pull low to halt operation and tri-state outputs; 12V ±0.5V pulse overrides sector lockout - enables secure recovery |
| VPP | Optional programming voltage | 4.5–5.5 V input for accelerated program/erase; tied to VCC if unused - reduces cycle times by ~30% when enabled |
| BYTE | Bus width configuration | Logic high = x16 mode (I/O0–I/O15 active); logic low = x8 mode (I/O0–I/O7 active, I/O15 = A−1) - determines MCU interface compatibility |
| VCCQ | Output driver power supply | Separate 1.8–2.2 V or 2.7–3.6 V rail for I/O drivers - isolates core logic from output noise and enables mixed-voltage interfacing |
Key Features
| Feature | Design Value |
|---|---|
| Dual-plane architecture | Enables concurrent read from one memory plane while programming or erasing the other - improves system responsiveness during firmware updates |
| Erase suspend/resume | Halts active sector erase within 15 µs to allow immediate read/program of other sectors - essential for interrupt-driven real-time applications |
| Sector-level write protection | Independent lockout per sector via software command - preserves bootloader or calibration data while updating application code |
| Three end-of-operation indicators | RDY/BUSY pin, data polling (I/O7 complement), and toggle bit (I/O6) provide redundant, software-accessible status - increases firmware robustness |
| Bypass unlock mode | 6-byte entry sequence enables single-pulse programming - cuts host CPU overhead during bulk writes by eliminating repeated command cycles |
| Hardware data protection | VCC sense, 10 ms power-on delay, noise filtering (<15 ns), and control-line inhibit prevent spurious writes - ensures reliability in noisy industrial environments |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing certified bootloader and application firmware in programmable logic controllers subject to IEC 61131-3 runtime updates. IC Role / Device Role / Timing Role: Nonvolatile code storage with sector-locked bootloader region and field-upgradable application partition. Use Value: Dual-plane concurrency allows HMI display refresh (read) during firmware download (erase/program), maintaining operator visibility and system uptime. |
Use Scenario: Holding FDA-cleared boot code and diagnostic firmware in portable ultrasound or infusion pumps requiring traceable, tamper-resistant storage. IC Role / Device Role / Timing Role: Secure, lockable flash memory with hardware reset override (12 V) for emergency recovery of corrupted firmware. Use Value: Sector lockout prevents unauthorized modification of safety-critical boot routines, while erase suspend enables responsive alarm logging during background firmware validation. |
| Automotive ECU Calibration Data | Telecom Base Station Configuration |
Use Scenario: Storing engine calibration maps and emission control parameters in Tier-1 automotive ECUs operating across −40°C to +85°C. IC Role / Device Role / Timing Role: High-reliability flash with 90 ns access for real-time lookup table reads during closed-loop control loops. Use Value: 20 µs word program time enables fast adaptation of trim values during production line calibration without extending test cycle time. |
Use Scenario: Retaining FPGA configuration bitstreams and radio parameter sets in 4G/5G small cell base stations with hot-swap capability. IC Role / Device Role / Timing Role: Dual-plane flash supporting concurrent radio data buffering (read) and remote configuration update (erase/program). Use Value: Erase suspend allows immediate response to network management commands (e.g., frequency reassignment) without delaying ongoing packet processing. |
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 | 90 ns access, 16 Mbit, x16 only, no BYTE pin; lacks dual-plane concurrency and erase suspend | Requires full chip erase for updates; no background read capability during programming | Choose for cost-sensitive designs where concurrent operation is unnecessary and x16-only interface suffices |
| MX29LV160ETTI-90G | 90 ns access, 16 Mbit, top-boot configuration, supports CFI query; no dual-plane or erase suspend | Boot block organization differs (top vs. configurable top/bottom); no hardware sector lockout override | Prefer when CFI-compliant toolchain support is required and sector protection is managed entirely in software |
Compared with SST39VF1601C-90-4C-EKE and MX29LV160ETTI-90G, AT49BV1614-90TC uniquely delivers dual-plane read-while-erase functionality and hardware-enforced sector lockout with 12 V RESET override - making it the only option among the three suitable for safety-critical, real-time firmware update architectures.
Availability
AT49BV1614-90TC is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic equipment, automotive ECUs, telecom infrastructure, and avionics subsystems requiring stable component supply and long-term obsolescence management.
Supply support for AT49BV1614-90TC 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
Atmel Corporation, now part of Microchip Technology, is a semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and security ICs for industrial, automotive, and IoT applications.
The AT49BV16X4(T) family was designed for embedded systems requiring reliable, low-voltage flash memory with flexible sector protection and real-time update capabilities - targeting applications where firmware integrity and field upgradeability are mission-critical.
FAQ
What is the difference between AT49BV1614-90TC and AT49BV1604-90TC?
The AT49BV1614-90TC and AT49BV1604-90TC share identical electrical specifications and pinout but differ in sector mapping and boot block configuration. AT49BV1614-90TC uses bottom-boot organization (SA0–SA7 are 4K-word sectors at lowest addresses), while AT49BV1604-90TC uses top-boot. Both support BYTE pin selection for x8/x16 mode, and both are valid for new designs per Atmel's recommendation in Rev. 0925K–09/00.
Does AT49BV1614-90TC support true x8 mode with A−1 addressing?
Yes. When the BYTE pin is driven low, AT49BV1614-90TC enters x8 mode: I/O0–I/O7 become active data lines, I/O8–I/O14 are tri-stated, and I/O15 functions as the A−1 (LSB address) input. This enables direct connection to 8-bit microcontrollers with multiplexed address/data buses, as confirmed in the "Device Operation" section of the datasheet.
How is sector lockout overridden on AT49BV1614-90TC?
Sector lockout on AT49BV1614-90TC is overridden by applying 12.0 V ± 0.5 V to the RESET pin - a hardware-level feature documented in the "Sector Programming Lockout Override" section. This voltage level is distinct from standard TTL/CMOS logic levels and must be generated externally; it permits chip erase, sector erase, or byte/word programming of otherwise protected sectors.
Can AT49BV1614-90TC perform read-while-erase across different memory planes?
Yes. AT49BV1614-90TC's dual-plane architecture explicitly allows reading from Plane B while erasing or programming Plane A, and vice versa. This is not an optional feature but a fundamental design characteristic stated in the "Description" and "Technical Context" sections - eliminating system stalls during firmware updates without requiring erase suspend.
What are the valid VPP voltage requirements for accelerated programming of AT49BV1614-90TC?
For accelerated programming and erasing, AT49BV1614-90TC requires VPP = 4.5 V to 5.5 V, as specified in the "Features" and "AC Characteristics" sections. Supplying VPP within this range reduces tBP and tSEC by up to 30% versus using VCC alone. If VPP is unused, it may be tied directly to VCC; floating VPP is not permitted.
AT49BV1614-90TC 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:
- 90 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
AT49BV1614-90TC FAQ
1.How can I place an order for AT49BV1614-90TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV1614-90TC 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 AT49BV1614-90TC reliable?
The price and inventory of AT49BV1614-90TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV1614-90TC is usually 5 days.
3.What payment methods are accepted for AT49BV1614-90TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV1614-90TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV1614-90TC?
AT49BV1614-90TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV1614-90TC 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 AT49BV1614-90TC?
For technical support, including AT49BV1614-90TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV1614-90TC requirements.
6.How does Aetrix verify that AT49BV1614-90TC is sourced from the original manufacturer or authorized distributors?
All AT49BV1614-90TC 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 AT49BV1614-90TC meets industry standards.
7.What is the process for return or replacement of AT49BV1614-90TC?
All AT49BV1614-90TC units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV1614-90TC, 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 AT49BV1614-90TC part is unused and in its original packaging.
Return procedure for AT49BV1614-90TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV1614-90TC Tags
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