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Microchip Technology AT49F1614T-90TC
- Part No.:
- AT49F1614T-90TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49F1614T-90TC.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,048
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Product details
Overview
AT49F1614T-90TC from Microchip Technology (formerly Atmel) is a 5.0V-only, 16-Mbit flash memory organized as 1,048,576 × 16-bit or 2,097,152 × 8-bit, featuring 90 ns access time, sector erase architecture with 40 independently lockable sectors, and dual-plane concurrent read-while-program/erase capability. It supports in-system programming via single 5V supply and is used in embedded boot code storage, firmware update modules, and industrial controller nonvolatile configuration memory.
For engineers reviewing the AT49F1614T-90TC datasheet, AT49F1614T-90TC pinout, AT49F1614T-90TC application, or AT49F1614T-90TC equivalent, key selection criteria include its 90 ns read timing, 10 µs word program time, 200 ms sector erase time, erase suspend/resume functionality, and TSOP-48 package compatibility with legacy 5V microcontroller buses.
Technical Context
This device implements a dual-plane architecture: Plane A contains eight 4K-word, two 16K-word, and six 32K-word sectors; Plane B contains twenty-four 32K-word sectors. Reads from one plane are fully permitted during program or erase operations on the other plane, enabling true background operation without system stall.
It supports hardware-based sector protection via RESET pin override at 12V ± 0.5V, software-controlled sector lockout enable/disable, and three end-of-operation detection methods-RDY/BUSY open-drain output, DATA polling on I/O7, and toggle bit on I/O6 (and I/O2 during erase suspend). Command sequences use standard microprocessor write timing with address latching on falling CE/WE edge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16 or 2,097,152 × 8), enabling full BIOS or FPGA configuration image storage in single device |
| Access Time | 90 ns max - meets timing requirements for 11 MHz bus interfaces without wait states |
| Word Program Time | 10 µs typical - allows rapid field firmware patching with minimal host CPU intervention |
| Sector Erase Time | 200 ms max per sector - predictable duration for deterministic update scheduling |
| Supply Voltage | 4.5 V to 5.5 V - compatible with legacy 5V logic systems without level-shifting |
| Active Current | 60 mA at 5 MHz - supports low-power operation in battery-backed industrial controllers |
| Standby Current | 3 mA - enables energy-efficient retention during idle periods |
Pinout & Package
AT49F1614T-90TC is packaged in a 48-lead Thin Small Outline Package (TSOP Type 1), 12.0 mm × 20.0 mm body, 0.5 mm lead pitch, RoHS-compliant. Pin 1 is marked by notch or dot; orientation follows JEDEC MO-141 standard.
| 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 16-bit or 8-bit data interface; BYTE pin selects mode; I/O15 serves as LSB address in byte mode |
| CE | Chip Enable | Active-low chip select; required low with OE low for read; high disables outputs to prevent bus contention |
| OE | Output Enable | Active-low output control; used with CE for read gating; high places outputs in high-Z state |
| WE | Write Enable | Active-low write strobe; latches addresses and data during command sequences and programming |
| RESET | Device Initialization | Active-low reset; halts ongoing operations and forces high-Z outputs; 12V ± 0.5V enables protected sector override |
| RDY/BUSY | Open-Drain Status Output | Low during internal program/erase; released high at completion; supports wired-OR multi-device monitoring |
| BYTE | Interface Mode Select | High = x16 mode (I/O0–I/O15 active); Low = x8 mode (I/O0–I/O7 active, I/O15 = A-1) |
| VCC, GND | Power Supply | Single 5V supply; decoupling required per JEDEC guidelines due to 60 mA active current |
Key Features
| Feature | Design Value |
|---|---|
| Dual-plane concurrent read/program-erase | Enables real-time firmware updates without interrupting host processor execution from alternate memory plane |
| Erase suspend/resume | Halts active sector erase to service urgent read/write requests in same plane, then resumes - critical for deterministic response in safety-critical systems |
| Individual sector write lockout | Allows permanent protection of boot code sectors (e.g., SA0–SA7) while permitting dynamic update of application sectors |
| 12V RESET override | Hardware-level recovery path to reprogram locked sectors without requiring external high-voltage programmer |
| Bypass unlock & single-pulse programming | Reduces host-side command overhead: after six-byte unlock, only one WE pulse needed per word write |
Applications
| Industrial PLC Firmware Storage | Automotive ECU Boot Memory |
|---|---|
Use Scenario: Storing bootloader and diagnostic firmware in programmable logic controllers with field-upgrade capability. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped to microcontroller address space; 90 ns access ensures zero-wait-state execution from reset vector. Use Value: Sector lockout prevents accidental corruption of bootloader; dual-plane operation allows background firmware validation during runtime. |
Use Scenario: Holding certified boot code and calibration tables in engine control units subject to ISO 26262 ASIL-B requirements. IC Role / Device Role / Timing Role: Secure, electrically erasable storage for ASW and BSW layers; 12V RESET override enables authorized reprogramming during service. Use Value: Erase suspend permits real-time sensor data logging during firmware update; RDY/BUSY pin integrates with ECU watchdog timer. |
| Medical Device Configuration Memory | Networking Equipment Image Storage |
Use Scenario: Retaining device-specific calibration parameters and regulatory compliance settings in portable ultrasound systems. IC Role / Device Role / Timing Role: Parameter storage accessed during power-on self-test; standby current ≤3 mA extends battery life in portable mode. Use Value: Independent sector locking isolates FDA-approved calibration data from user-modifiable operational settings. |
Use Scenario: Storing multiple firmware images (primary, backup, recovery) in enterprise switches and routers. IC Role / Device Role / Timing Role: Dual-plane architecture enables atomic image swap: load new firmware into erased sectors while executing from active plane. Use Value: 200 ms sector erase time enables sub-second failover; DATA polling on I/O7 simplifies host driver implementation. |
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 | 4.5–3.6V supply (3.3V compatible), 90 ns access, 48-TSOP, no dual-plane or erase suspend | Lacks concurrent read-while-erase; requires full-chip or block erase only - unsuitable for real-time update scenarios | Select when migrating to 3.3V systems and concurrent operation is unnecessary; verify voltage translation for 5V hosts |
| MX29LV160DBTI-90G | 3.0V core, 5V tolerant I/O, 90 ns access, 48-TSOP, top/bottom boot configuration, no dual-plane | Boot-block architecture differs; lacks erase suspend and 12V override - limited secure update flexibility | Prefer for cost-sensitive consumer designs where boot-sector protection suffices and 3.3V operation is mandatory |
Compared with SST39VF1601C-90-4C-EKE and MX29LV160DBTI-90G, AT49F1614T-90TC uniquely delivers dual-plane concurrency and hardware-overrideable sector lockout - essential for deterministic firmware updates in industrial and automotive control systems requiring zero-downtime operation.
Availability
AT49F1614T-90TC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU boot memory, and medical device configuration memory requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT49F1614T-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
Microchip Technology acquired Atmel in 2016 and maintains full support for legacy Atmel flash memory products including the AT49F16X4(T) family.
The AT49F16X4(T) series was designed for 5V embedded systems requiring reliable, in-system programmable nonvolatile storage with robust sector-level protection and real-time update capability - targeting industrial automation, automotive, and medical equipment.
FAQ
What is the operating temperature range for the AT49F1614T-90TC?
The AT49F1614T-90TC is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "DC and AC Operating Range" section of the official datasheet (Rev. 0977J–04/00), where "Ind." grade denotes the industrial range. The "T" suffix in the part number explicitly indicates this extended temperature capability, distinguishing it from the commercial-grade AT49F1614-90TI.
Does the AT49F1614T-90TC support both x8 and x16 data bus configurations?
Yes, the AT49F1614T-90TC supports configurable x8 or x16 operation via the BYTE pin. When BYTE = HIGH, I/O0–I/O15 are active for 16-bit transfers; when BYTE = LOW, only I/O0–I/O7 are active for 8-bit transfers and I/O15 functions as the A-1 address input. This dual-mode capability is documented in the "Device Operation" section and verified in the pin configuration diagrams for TSOP-48.
How does erase suspend work in the AT49F1614T-90TC, and what is its practical benefit?
Erase suspend halts an ongoing sector erase to allow immediate read or program access to any other sector within the same memory plane. The AT49F1614T-90TC requires ≤15 µs to enter suspend mode, and the suspended sector remains in erase-suspend-read state until resumed. This enables deterministic response in time-critical applications - for example, logging sensor data during a firmware update without waiting for erase completion.
Can the AT49F1614T-90TC be programmed using only a 5V supply, or is high voltage required?
The AT49F1614T-90TC performs all standard read, program, and erase operations using only a single 4.5V–5.5V VCC supply - no external high-voltage generator is needed. High voltage (12V ± 0.5V) is required exclusively on the RESET pin to override sector lockout; this is a recovery feature, not part of normal programming flow. The "5-volt Only" designation in the device description confirms this architecture.
What package type does the AT49F1614T-90TC use, and are pin-compatible alternatives available?
The AT49F1614T-90TC uses a 48-lead Thin Small Outline Package (TSOP Type 1), designated "48T" in Microchip's ordering information. While the same die is offered in CBGA (48C2) and µBGA (48U), the TSOP variant is pin-compatible across the AT49F1604(T)/1614(T) family - meaning AT49F1614T-90TC shares identical pinout, signal definitions, and timing with AT49F1604T-90TC, differing only in sector organization and boot-block configuration.
AT49F1614T-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:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
AT49F1614T-90TC FAQ
1.How can I place an order for AT49F1614T-90TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F1614T-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 AT49F1614T-90TC reliable?
The price and inventory of AT49F1614T-90TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F1614T-90TC is usually 5 days.
3.What payment methods are accepted for AT49F1614T-90TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F1614T-90TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F1614T-90TC?
AT49F1614T-90TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F1614T-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 AT49F1614T-90TC?
For technical support, including AT49F1614T-90TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F1614T-90TC requirements.
6.How does Aetrix verify that AT49F1614T-90TC is sourced from the original manufacturer or authorized distributors?
All AT49F1614T-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 AT49F1614T-90TC meets industry standards.
7.What is the process for return or replacement of AT49F1614T-90TC?
All AT49F1614T-90TC units undergo pre-shipment inspection (PSI). If there is an issue with AT49F1614T-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 AT49F1614T-90TC part is unused and in its original packaging.
Return procedure for AT49F1614T-90TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49F1614T-90TC Tags
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