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Microchip Technology AT49BV160DT-70CU
- Part No.:
- AT49BV160DT-70CU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 46-VFBGA, CSBGA
- Datasheet:
-
AT49BV160DT-70CU.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 46CBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,224
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Product details
Overview
AT49BV160DT-70CU from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16) single-supply Flash memory IC designed for embedded code storage and data logging in microcontroller-based systems. It operates at 2.65–3.6 V, delivers 70 ns access time, supports sector erase with 31 × 64 KB + 8 × 8 KB sectors, and features Erase/Program Suspend for concurrent read/program operations during background erase.
For engineers reviewing the AT49BV160DT-70CU datasheet, AT49BV160DT-70CU pinout, AT49BV160DT-70CU application, or AT49BV160DT-70CU equivalent, key selection criteria include its TSOP-48 package, flexible sector protection (Softlock/Hardlock), CFI compliance, 128-bit protection register, and dual-word programming acceleration via VPP = 10 V.
Technical Context
This parallel-interface NOR Flash implements a Write State Machine (WSM) that automates program and erase timing, status reporting via I/O7–I/O0, and hardware-enforced protection via VPP (0.4 V inhibit threshold) and WP pin. Sector locking states are software-configurable per sector using dedicated command sequences (e.g., 60h/01h for Softlock).
The device supports Common Flash Interface (CFI) mode (entry via 98h command) for runtime identification of geometry, timing, and feature sets. Its dual-bus-cycle command architecture requires precise CE/WE/OE timing control, with status bits SR7 (WSMS), SR6 (ESS), and SR2 (PSS) enabling real-time suspend/resume coordination across independent memory regions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16-bit words) - supports full firmware images for mid-complexity MCUs without external expansion. |
| Access Time | 70 ns - enables direct execution (XIP) from Flash in systems with ≤14 MHz bus clocks. |
| Erase Architecture | 39 sectors: 31 × 64 KB + 8 × 8 KB - allows granular firmware updates without erasing entire memory. |
| Program Time | 10 µs per word - reduces over-the-air (OTA) update latency in field-deployed devices. |
| Erase Time | 100 ms per sector - predictable timing for deterministic bootloader erase routines. |
| Endurance | 100,000 erase cycles - qualifies for industrial logging applications with daily write cycles over 27 years. |
| Supply Voltage | 2.65–3.6 V - compatible with 3.3 V system rails and tolerant of brown-out conditions down to 2.65 V. |
| Standby Current | 15 µA - enables ultra-low-power retention in battery-backed systems during sleep modes. |
Pinout & Package
AT49BV160DT-70CU is supplied in a 48-lead Thin Small Outline Package (TSOP Type I, 12 mm × 20 mm), pin-compatible with industry-standard x16 parallel Flash footprints. Pin functions are electrically defined and validated per Microchip datasheet 3591A–FLASH–12/05.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing; A0–A19 must be stable before WE/CE edge for command latching. |
| I/O0–I/O15 | Data Bus | 16-bit bidirectional data path; outputs high-impedance when CE or OE is high to prevent bus contention. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for read access; controls device selection in multi-chip configurations. |
| OE | Output Enable | Active-low output control; toggling OE or CE updates status register contents during polling operations. |
| WE | Write Enable | Active-low write strobe; rising edge latches address/data for command sequences and program/erase initiation. |
| VPP | Program/Erase Voltage Control | Enables accelerated dual-word programming at 10 V; inhibits all writes if < 0.4 V; must not float. |
| WP | Sector Write Protect | Hardware override for Hardlock sectors: low = permanent lock; high = unlockable via software command. |
| RESET | Device Initialization | Active-low reset halts ongoing operations and forces return to read mode on deassertion; used for recovery after power-up or error. |
| VCCQ | Output Driver Supply | Separate 2.65–3.6 V supply for I/O drivers; VOH = VCCQ − 0.1 V ensures clean logic levels in mixed-voltage systems. |
| NC | No Connect | Two unconnected pins (pins 9, 10 in TSOP); must remain unconnected per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Erase/Program Suspend | Allows reading or programming any unlocked sector while another sector is being erased or programmed - enables real-time firmware patching without interrupting active code execution. |
| Flexible Sector Protection | Per-sector Softlock (software-unlockable) and Hardlock (WP-pin-gated) modes - secures boot code in SA0–SA7 while permitting frequent updates to application sectors. |
| 128-bit Protection Register | Factory-programmed 64-bit ID + user-programmable 64-bit locked sector - provides tamper-resistant device authentication and secure key storage for encrypted bootloaders. |
| Common Flash Interface (CFI) | Standardized query table accessible via 98h command - enables OS-agnostic flash management drivers and simplifies second-source qualification. |
| Dual-Word Programming | Accelerated 2-word parallel write when VPP = 10 V - cuts manufacturing programming time by ~50% for production line flashing. |
| Hardware Data Protection | VCC sense (<1.8 V inhibit), VPP monitoring, and CE/OE/WE gating - prevents accidental writes during power ramp-up or signal glitches. |
Applications
| Industrial PLC Firmware Storage | Automotive Instrument Cluster Code |
|---|---|
Use Scenario: Storing firmware and calibration tables in programmable logic controllers operating in harsh temperature environments (−40°C to +85°C). IC Role / Device Role / Timing Role: Nonvolatile code storage with XIP capability; 70 ns access time meets real-time scan cycle deadlines. Use Value: Sector erase architecture enables field-upgradable firmware patches without replacing hardware; 100,000-cycle endurance supports 10+ years of scheduled maintenance updates. | Use Scenario: Holding boot code, GUI assets, and driver binaries in automotive digital dashboards requiring ASIL-B functional safety alignment. IC Role / Device Role / Timing Role: Secure boot memory with Hardlock-protected boot sector (SA0) and CFI-enabled runtime validation. Use Value: 128-bit protection register stores cryptographic keys; WP pin hardens boot integrity against voltage glitch attacks during vehicle startup. |
| Medical Device Configuration Memory | Networking Equipment Bootloader |
Use Scenario: Retaining user-configurable parameters, sensor calibration data, and regulatory compliance logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Data logging storage with individual sector write lockout; 15 µA standby current extends battery life between recalibrations. Use Value: Flexible sector protection isolates critical calibration sectors (SA0–SA7) from application data sectors (SA8–SA38), preventing accidental corruption during firmware updates. | Use Scenario: Hosting primary bootloader and fail-safe recovery image in enterprise switches and routers requiring zero-downtime firmware upgrades. IC Role / Device Role / Timing Role: Dual-image storage with Erase Suspend allowing simultaneous read of active image and program of new image in alternate sector. Use Value: Suspend/resume capability eliminates reboot windows during OTA updates; CFI support enables vendor-agnostic upgrade utilities across product families. |
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, but uses SST's SuperFlash technology with faster 18 ms sector erase vs. 100 ms; no VPP pin - relies on internal charge pump. | Lacks VPP-accelerated programming and 128-bit protection register; CFI implementation differs slightly in query table offsets. | Select when lower erase time and elimination of external VPP supply simplify board design, accepting trade-off in security features. |
| MX29LV160ETTI-70G | 16 Mbit, 70 ns, top-boot configuration; supports both 3.0 V and 3.3 V operation; includes RY/BY# ready/busy output not present on AT49BV160DT-70CU. | RY/BY# simplifies polling-free status monitoring; lacks Erase Suspend and 128-bit protection register. | Prefer for systems requiring hardware-ready signaling and simplified status polling, where suspend functionality is non-critical. |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160ETTI-70G, the AT49BV160DT-70CU uniquely combines Erase/Program Suspend, VPP-accelerated dual-word programming, and factory/user-segmented 128-bit protection - making it optimal for secure, field-upgradable embedded systems demanding concurrent memory access.
Availability
AT49BV160DT-70CU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive instrument cluster code, medical device configuration memory, and networking equipment bootloader applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AT49BV160DT-70CU 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 Inc. is a leading provider of microcontroller, analog, FPGA, and Flash memory solutions, acquired Atmel in 2016 and maintains full technical and manufacturing continuity for legacy Atmel Flash products.
The AT49BV160DT-70CU belongs to Microchip's legacy parallel NOR Flash product line, engineered for reliable in-system programmability, sector-level data integrity, and long-term industrial deployment in resource-constrained embedded systems.
FAQ
What is the maximum operating temperature range for the AT49BV160DT-70CU?
The AT49BV160DT-70CU is rated for operation from −40°C to +85°C ambient temperature, meeting industrial-grade environmental requirements. Its absolute maximum junction temperature is +125°C under bias, and storage temperature extends to −65°C to +150°C. This thermal specification ensures reliable performance in enclosed control cabinets, automotive under-hood environments, and medical enclosures without forced cooling.
Does the AT49BV160DT-70CU support true 3.3 V-only operation without VPP voltage boosting?
Yes, the AT49BV160DT-70CU supports full read, program, and erase functionality at 3.3 V with VPP tied to VCC (3.3 V), as specified in its 2.65–3.6 V single-supply operation. The VPP pin is optional: at ≥1.65 V it enables standard programming/erasing; at 10.0 V it accelerates dual-word programming. No external high-voltage generator is required for basic operation.
How does the sector protection mechanism work on the AT49BV160DT-70CU?
The AT49BV160DT-70CU implements two independent sector protection modes: Softlock (software-unlockable via 60h/D0h command) and Hardlock (hardware-gated by WP pin state). At power-up, all 39 sectors default to Softlock. Hardlock becomes permanent when WP = low; setting WP = high restores unlock capability. Protection status is verified by reading I/O1:I/O0 at address 00002H within each sector.
Can the AT49BV160DT-70CU be used in a 16-bit data bus system with mixed 5 V and 3.3 V logic levels?
Yes - input pins (A0–A19, CE, OE, WE, RESET, WP, VPP) tolerate 0–5.5 V regardless of VCC, enabling direct interfacing with 5 V microcontrollers. However, I/O0–I/O15 outputs are referenced to VCCQ (2.65–3.6 V), and inputs must stay within 0–(VCCQ + 0.6 V). For 5 V systems, level-shifting is required on the data bus unless the host uses 3.3 V-tolerant I/O.
What command sequence is required to enter CFI Query mode on the AT49BV160DT-70CU?
To enter CFI Query mode on the AT49BV160DT-70CU, issue a single-bus-cycle command: write data byte 98h to any valid address while the device is in read mode. Once entered, CFI data (geometry, timings, vendor ID) can be read from predefined addresses per the "Common Flash Interface Definition Table" (page 24 of datasheet 3591A–FLASH–12/05). Exit by issuing the Read command (FFh).
AT49BV160DT-70CU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 46-VFBGA, CSBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 16Mbit
- Memory Organization:
- 1M x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 120µs
- Access Time:
- 70 ns
- Voltage - Supply:
- 2.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 46-CBGA (6.5x7.5)
AT49BV160DT-70CU FAQ
1.How can I place an order for AT49BV160DT-70CU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV160DT-70CU 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 AT49BV160DT-70CU reliable?
The price and inventory of AT49BV160DT-70CU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV160DT-70CU is usually 5 days.
3.What payment methods are accepted for AT49BV160DT-70CU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV160DT-70CU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV160DT-70CU?
AT49BV160DT-70CU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV160DT-70CU 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 AT49BV160DT-70CU?
For technical support, including AT49BV160DT-70CU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV160DT-70CU requirements.
6.How does Aetrix verify that AT49BV160DT-70CU is sourced from the original manufacturer or authorized distributors?
All AT49BV160DT-70CU 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 AT49BV160DT-70CU meets industry standards.
7.What is the process for return or replacement of AT49BV160DT-70CU?
All AT49BV160DT-70CU units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV160DT-70CU, 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 AT49BV160DT-70CU part is unused and in its original packaging.
Return procedure for AT49BV160DT-70CU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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