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Microchip Technology AT49BV160DT-70CU-T
- Part No.:
- AT49BV160DT-70CU-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 46-VFBGA, CSBGA
- Datasheet:
-
AT49BV160DT-70CU-T.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 46CBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT49BV160DT-70CU-T from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16) single-supply 2.7V Flash memory IC with sector erase architecture, 70 ns access time, and flexible hardware/software protection. It supports in-system programming in embedded microcontroller boot code storage, firmware update partitions, and industrial HMI configuration storage.
For engineers reviewing the AT49BV160DT-70CU-T datasheet, AT49BV160DT-70CU-T pinout, AT49BV160DT-70CU-T application, or AT49BV160DT-70CU-T equivalent, key selection criteria include sector lock granularity (31 × 64KB + 8 × 8KB), suspend/resume capability for concurrent read/program during erase, CFI compliance for auto-configuration, VPP-accelerated dual-word programming, and TSOP-48/CBGA-46 package options.
Technical Context
This parallel-interface NOR Flash implements a Write State Machine (WSM) that autonomously manages program and erase cycles, including internal timing, verification, and status reporting via I/O7–I/O0. It uses command sequences written to specific address/data combinations (e.g., 40h for program setup, 20h/D0h for sector erase) with CE/OE/WE control logic to avoid bus contention.
The device integrates dual-sector protection modes - Softlock (software-unlockable) and Hardlock (WP-pin-gated) - plus a 128-bit factory/user-programmable protection register with locked Sector B. Its Common Flash Interface (CFI) enables runtime detection of geometry, timing, and feature support without hard-coded driver assumptions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 words × 16 bits); supports boot code and firmware image storage in resource-constrained systems. |
| Access Time | 70 ns max; enables direct execution (XIP) from Flash in 20–25 MHz microcontroller buses without wait states. |
| Sector Architecture | 39 sectors: 31 × 64KB + 8 × 8KB; allows fine-grained firmware partitioning (e.g., bootloader, app, config) with independent lock control. |
| Program/Erase Speed | 10 µs per word / 100 ms per sector; reduces field firmware update time and improves manufacturing throughput. |
| Power Consumption | 10 mA active / 15 µA standby; suitable for battery-backed or low-power industrial controllers requiring nonvolatile retention. |
| VPP Voltage Range | 0.4V (inhibit) / 1.65V–10.0V (enable/accelerate); enables hardware write protection and faster dual-word programming at 9.5V. |
| Endurance & Data Retention | ≥100,000 erase cycles / ≥20 years data retention; meets long-life requirements for industrial automation and medical devices. |
| Interface Standard | Common Flash Interface (CFI) compliant; allows generic flash drivers to auto-detect geometry, timing, and command sets. |
Pinout & Package
AT49BV160DT-70CU-T is available in a 48-lead TSOP-I (Type 1) package, pin-compatible with industry-standard 48-pin Flash sockets. Pin functions are electrically identical across TSOP and CBGA variants; this part number suffix "-CU" denotes the TSOP-48 configuration.
| 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 CE/WE pulse for command latching. |
| I/O0–I/O15 | Bidirectional Data Bus | 16-bit parallel data path; outputs high-impedance when CE or OE is high; VOH = VCCQ − 0.1V (not VCC). |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for read; used with OE/WE to prevent bus contention. |
| OE | Output Enable | Active-low output control; toggling OE (or CE) latches status register contents on falling edge for reliable polling. |
| WE | Write Enable | Active-low write strobe; rising edge latches address/data for command sequences (e.g., program setup, sector erase). |
| VPP | Programming Voltage | Enables erase/program when ≥1.65V; inhibits all writes if <0.4V; 10.0V enables accelerated dual-word programming. |
| WP | Hardware Write Protect | Gates Hardlock sector unlock: WP = low locks Hardlocked sectors permanently; WP = high allows software unlock. |
| RESET | Device Initialization | Active-low reset halts ongoing operations and forces return to read mode; required after power-up or error recovery. |
| VCCQ | Output Power Supply | Separate 2.65–3.6V supply for I/O drivers; decoupling required to maintain signal integrity during fast reads/writes. |
| NC | No Connect | Two pins (TSOP pins 9,10) are unconnected; must be left floating or tied to ground per PCB layout best practices. |
Key Features
| Feature | Design Value |
|---|---|
| Erase/Program Suspend & Resume | Allows reading or programming any unlocked sector while another sector is being erased or programmed - critical for real-time firmware updates without system freeze. |
| Flexible Sector Protection | Independent Softlock (software-unlockable) and Hardlock (WP-gated) per sector - enables secure bootloader + updatable application partitioning. |
| 128-bit Protection Register | Factory-programmed 64-bit Sector A + user-programmable/lockable 64-bit Sector B - supports device-specific security keys and anti-cloning features. |
| CFI Compliance | Standardized query table readable via 98h command - eliminates hardcoded driver dependencies and simplifies multi-vendor flash migration. |
| Dual-Word Programming (VPP = 9.5V) | Writes two adjacent 16-bit words in one cycle - cuts manufacturing programming time by ~50% for production line flash preloading. |
| Hardware Data Protection | VCC sense (<1.8V inhibits program), VPP under-voltage detection (SR3), and control pin gating (OE/CE/WE) prevent accidental writes during power ramp or noise events. |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Partition |
|---|---|
Use Scenario: Storing firmware images and calibration tables in programmable logic controllers operating in harsh factory environments with wide temperature swings and EMI. IC Role / Device Role / Timing Role: Nonvolatile code storage with XIP-capable 70 ns access; sector-locked bootloader prevents corruption during field firmware upgrades. Use Value: 100,000-cycle endurance and 20-year data retention ensure reliability over 15+ year product lifecycles without replacement. |
Use Scenario: Securing boot code and regulatory-compliant diagnostic routines in FDA-cleared patient monitors and infusion pumps. IC Role / Device Role / Timing Role: Dual-protection (Softlock + Hardlock) isolates certified bootloader from field-upgradable application layers; CFI enables automated version validation. Use Value: 128-bit protection register supports cryptographic key binding to device serial numbers, meeting IEC 62304 security requirements. |
| Automotive Infotainment Configuration | Networking Equipment Feature Licensing |
Use Scenario: Storing UI language packs, display profiles, and vehicle-specific settings in automotive head units with frequent OTA updates. IC Role / Device Role / Timing Role: Suspend/resume enables background sector erase while foreground UI remains responsive; WP pin disables updates during ignition cycles. Use Value: Concurrent read/program capability eliminates UI stutter during multi-megabyte configuration reloads. |
Use Scenario: Enabling premium features (e.g., advanced QoS, VLAN tagging) in enterprise switches via encrypted license keys stored in protected sectors. IC Role / Device Role / Timing Role: User-programmable Sector B of 128-bit register stores revocable licenses; Hardlock prevents tampering during powered operation. Use Value: Hardware-enforced license binding eliminates software-only key extraction attacks common in firmware dumps. |
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 (16Mbit), 70 ns access, but lacks VPP acceleration and CFI; uses different command set (SST-style). | No suspend/resume; no 128-bit protection register; requires custom driver adaptation. | Choose for cost-sensitive designs where CFI and suspend features are unused and legacy SST toolchains exist. |
| MX29LV160DBTI-70G | 16Mbit, 70 ns, supports CFI and sector protection, but only 10,000 erase cycles and no VPP pin. | Lacks hardware write inhibit via VPP; lower endurance limits field update frequency in high-change-rate applications. | Choose when VPP-based protection is unnecessary and lifecycle cost favors higher-volume Macronix supply. |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160DBTI-70G, the AT49BV160DT-70CU-T uniquely combines VPP-gated program acceleration, 100K-cycle endurance, and full CFI support - making it optimal for safety-critical or field-upgrade-intensive deployments where reliability and driver portability are mandatory.
Availability
AT49BV160DT-70CU-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader partitions, and automotive infotainment configuration requiring stable component supply across extended product lifecycles.
Supply support for AT49BV160DT-70CU-T 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 technical and supply chain support for the AT49BV series. The company specializes in high-reliability microcontrollers, analog, and nonvolatile memory for industrial, automotive, and aerospace markets.
The AT49BV160D(T) family was designed specifically for embedded systems requiring robust, in-system programmable Flash with hardware-assisted security and real-time update capabilities - targeting applications where firmware integrity and field serviceability are non-negotiable.
FAQ
What is the function of the VPP pin on the AT49BV160DT-70CU-T?
The VPP pin on the AT49BV160DT-70CU-T serves dual roles: it inhibits all program and erase operations when held below 0.4V (hardware write protection), and enables normal or accelerated programming when at 1.65V or above. At 10.0V, the AT49BV160DT-70CU-T supports dual-word programming for faster manufacturing throughput. Leaving VPP floating is prohibited per datasheet specifications.
Does the AT49BV160DT-70CU-T support true concurrent read-while-erase functionality?
Yes, the AT49BV160DT-70CU-T supports Erase Suspend: issuing the B0h command pauses an ongoing sector erase, allowing immediate reads or programming from any other unlocked sector. After read/program completes, the D0h Erase Resume command restarts the suspended erase. This enables real-time responsiveness during firmware updates without halting system operation.
How does sector protection work on the AT49BV160DT-70CU-T?
The AT49BV160DT-70CU-T implements two independent sector protection modes: Softlock (software-unlockable via 60h/D0h command) and Hardlock (gated by the WP pin). At power-up, all sectors default to Softlock. Hardlock becomes permanent if WP is low; if WP is high, Hardlocked sectors can be unlocked. Status is verified via I/O1/I/O0 reads at address 00002h within each sector.
What is the purpose of the 128-bit protection register in the AT49BV160DT-70CU-T?
The AT49BV160DT-70CU-T's 128-bit protection register consists of factory-programmed Sector A (64 bits, immutable) and user-programmable Sector B (64 bits, lockable). Sector B can be written using the C0h command and permanently locked with the C0h/80h/FFFDh sequence. This enables binding of device-unique keys, license tokens, or cryptographic seeds to prevent cloning or unauthorized feature enablement.
Is the AT49BV160DT-70CU-T compatible with standard Flash memory drivers?
Yes - the AT49BV160DT-70CU-T implements the Common Flash Interface (CFI) standard. By issuing the 98h command, host software can read a standardized parameter table from fixed addresses to auto-detect geometry, timing, command sets, and supported features. This eliminates driver hardcoding and enables drop-in compatibility with CFI-aware BIOS, U-Boot, and RTOS flash abstractions.
AT49BV160DT-70CU-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 46-VFBGA, CSBGA
- Packaging:
- Tape & Reel (TR)
- 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-T FAQ
1.How can I place an order for AT49BV160DT-70CU-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV160DT-70CU-T 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-T reliable?
The price and inventory of AT49BV160DT-70CU-T 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-T is usually 5 days.
3.What payment methods are accepted for AT49BV160DT-70CU-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV160DT-70CU-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV160DT-70CU-T?
AT49BV160DT-70CU-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV160DT-70CU-T 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-T?
For technical support, including AT49BV160DT-70CU-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV160DT-70CU-T requirements.
6.How does Aetrix verify that AT49BV160DT-70CU-T is sourced from the original manufacturer or authorized distributors?
All AT49BV160DT-70CU-T 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-T meets industry standards.
7.What is the process for return or replacement of AT49BV160DT-70CU-T?
All AT49BV160DT-70CU-T units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV160DT-70CU-T, 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-T part is unused and in its original packaging.
Return procedure for AT49BV160DT-70CU-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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