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Microchip Technology AT49BV162A-70CI
- Part No.:
- AT49BV162A-70CI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA, CSPBGA
- Datasheet:
-
AT49BV162A-70CI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48CBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,388
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Product details
Overview
AT49BV162A-70CI from Atmel (now Microchip) is a 16-Mbit (1M × 16 / 2M × 8) single-supply Flash memory IC operating at 2.65–3.6 V, featuring 55 ns read access time, sector erase architecture with 39 sectors (31 × 64 KB + 8 × 8 KB), and suspend/resume capability for concurrent read/program during erase. It serves as nonvolatile code/data storage in embedded boot systems requiring in-system reprogrammability.
For engineers reviewing the AT49BV162A-70CI datasheet, AT49BV162A-70CI pinout, AT49BV162A-70CI application, or AT49BV162A-70CI equivalent, key selection considerations include its TSOP-48 package, VPP-based hardware write protection, CFI compliance for auto-configuration, and sector lockdown support for secure boot code retention.
Technical Context
This parallel-interface NOR Flash implements a command-set-driven architecture with dual-mode data bus (x8/x16 via BYTE pin), CE/OE/WE control logic to prevent bus contention, and internal state machine for erase/program execution. It supports both chip- and sector-level erasure, with automatic timing and status feedback via RDY/BUSY, Data Polling (I/O7), and Toggle Bit (I/O6).
The device integrates a 128-bit protection register (factory-programmed Block A + user-programmable/lockable Block B), programmable configuration register (default "00" for auto-return-to-read), and hardware safeguards including VCC sense, VPP voltage monitoring (I/O3), and erase/program status flagging (I/O5). Its suspend/resume functionality enables real-time interruptible operations across non-overlapping sectors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16-bit or 2,097,152 × 8-bit organization) |
| Read Access Time | 55 ns - determines minimum CPU wait-state insertion for reliable x16/x8 read cycles |
| Supply Voltage | 2.65–3.6 V - enables direct interface with 3.3 V logic without level shifters |
| Sector Architecture | 39 sectors: 31 × 64 KB + 8 × 8 KB - allows granular firmware updates without full-chip erase |
| Program/Erase End Detection | RDY/BUSY pin + Data Polling (I/O7) + Toggle Bit (I/O6) - provides flexible, software- or hardware-triggered completion signaling |
| Erase Cycles | ≥100,000 per sector - ensures long-term field reliability for frequently updated partitions |
| Common Flash Interface | CFI-compliant - enables OS/bootloader auto-detection of geometry, timings, and command set |
Pinout & Package
AT49BV162A-70CI is packaged in a 48-lead TSOP Type I (Thin Small Outline Package) with standard JEDEC MO-143AC footprint. Pin functions are validated per Atmel document 3349H–FLASH–3/05, Figure 2.1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word addressing; A-1 alias 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 bus; I/O15 doubles as LSB address in byte mode when BYTE = 0 |
| CE, OE, WE | Chip Enable, Output Enable, Write Enable | Three independent controls eliminate bus contention; OE high disables outputs regardless of CE/WE state |
| BYTE | Bus Width Select | Logic high = x16 mode (I/O0–I/O15 active); logic low = x8 mode (I/O0–I/O7 active, I/O15 = A-1) |
| VPP | Write Protection Voltage Input | Must be ≥0.9 V for program/erase; <0.4 V inhibits all writes - prevents accidental corruption during power transitions |
| RDY/BUSY | Open-drain Status Output | Active-low indicates ongoing erase/program; supports wired-OR with multiple devices on shared bus |
| RESET | Hardware Initialization | Pulsing low ≥500 ns forces return to read/standby mode and clears pending operations |
Key Features
| Feature | Design Value |
|---|---|
| Sector Erase Suspend/Resume | Enables reading or programming from non-suspending sectors while erasing another - critical for real-time firmware update without system freeze |
| Individual Sector Lockdown | Per-sector write-protection via command sequence - preserves boot code integrity while allowing application partition updates |
| 128-bit Protection Register | Factory-block (Block A) + user-lockable block (Block B) - supports secure key storage and anti-cloning mechanisms |
| Single-Pulse Program Mode | Reduces programming overhead by replacing 4-cycle command with single WE pulse - accelerates manufacturing flash programming |
| Hardware Data Protection | VCC sense, VPP monitoring, and control-line gating - eliminates need for external power-rail supervision ICs |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
|
Use Scenario: Storing certified bootloader and safety-critical firmware in Class II medical equipment with regulatory requirement for immutable startup code. IC Role / Device Role / Timing Role: Nonvolatile boot memory with sector lockdown ensuring boot sector remains unmodified during field upgrades of application firmware. Use Value: Prevents unauthorized or corrupted firmware execution at power-on; leverages 100,000+ erase cycles for lifetime field updates of non-boot partitions. |
Use Scenario: Holding deterministic initialization routines in programmable logic controllers where runtime code updates must not disrupt core control loops. IC Role / Device Role / Timing Role: Parallel NOR Flash providing sub-60 ns instruction fetch latency to microcontroller during cold start and warm reset sequences. Use Value: Enables zero-wait-state execution from Flash for time-critical I/O scanning; RDY/BUSY pin synchronizes background firmware patching with scan cycle boundaries. |
| Telecom Baseband Processor Configuration | Automotive Infotainment System Recovery Image |
|
Use Scenario: Storing DSP configuration tables and calibration data in wireless infrastructure radios requiring rapid reconfiguration after link loss. IC Role / Device Role / Timing Role: CFI-compliant Flash enabling automatic detection of geometry and command set by host bootloader - eliminating hard-coded driver dependencies. Use Value: Guarantees interoperability across second-source parts; sector erase permits selective recalibration table updates without reloading full baseband image. |
Use Scenario: Hosting fail-safe recovery firmware in automotive head units, isolated from main OS partition to survive corrupted OTA updates. IC Role / Device Role / Timing Role: Secure, lockable Flash memory with VPP-based hardware write protection - prevents malicious or erroneous overwrites during vehicle battery transients. Use Value: Ensures guaranteed boot path even under brown-out conditions; 12 µs word program time enables fast recovery image validation and checksum repair. |
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, 3.0–3.6 V supply; lacks VPP pin and sector lockdown; uses different command set | No hardware write protection or secure boot lockdown - requires software-only protection schemes | Choose when cost sensitivity outweighs security requirements and CFI compatibility is sufficient |
| MX29LV160BTC-70G | 16 Mbit, 70 ns, 2.7–3.6 V; includes CFI and sector protection but no VPP pin or 128-bit protection register | Lacks dedicated hardware write-protection voltage input - relies on control-line sequencing for protection | Prefer when board space constraints favor same-pinout TSOP-48 and legacy design reuse is prioritized |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160BTC-70G, AT49BV162A-70CI uniquely combines VPP-based hardware write inhibition, per-sector lockdown, and factory-programmed 128-bit protection - making it the only option among the three qualified for safety-certified boot storage where hardware-enforced immutability is mandated.
Availability
AT49BV162A-70CI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code retention, telecom baseband configuration, automotive infotainment recovery, and embedded system BIOS applications requiring stable component supply and long-lifecycle support.
Supply support for AT49BV162A-70CI 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, designs high-reliability nonvolatile memory and microcontroller solutions for industrial, automotive, and communications markets.
The AT49BV162A-70CI belongs to Atmel's legacy parallel NOR Flash product line, engineered specifically for embedded systems requiring in-system programmability, hardware write protection, and secure boot partitioning in resource-constrained environments.
FAQ
What is the maximum operating temperature range for the AT49BV162A-70CI?
The AT49BV162A-70CI is rated for operation from –40°C to +85°C (industrial grade), with absolute maximum bias temperature up to +125°C. This range supports deployment in enclosed industrial enclosures and automotive under-dash environments where ambient heat buildup occurs. The device maintains full 55 ns read access and reliable sector erase performance across this span.
Does the AT49BV162A-70CI support both x8 and x16 data bus configurations?
Yes, the AT49BV162A-70CI supports configurable bus width via the BYTE pin: logic high enables x16 mode (I/O0–I/O15 active), while logic low enables x8 mode (I/O0–I/O7 active, with I/O15 repurposed as A-1 address input). This flexibility allows seamless integration with 8-bit and 16-bit microcontrollers without external glue logic.
How does the VPP pin function in the AT49BV162A-70CI?
The VPP pin on the AT49BV162A-70CI acts as a hardware write-enable gate: program and erase operations are inhibited when VPP < 0.4 V, and enabled only when VPP ≥ 0.9 V. This prevents accidental writes during power-up/down transients and eliminates reliance on software-only protection - a critical feature for safety-critical boot memory applications.
Can the AT49BV162A-70CI be used in systems requiring Common Flash Interface (CFI) compliance?
Yes, the AT49BV162A-70CI fully implements the Common Flash Interface (CFI) specification. Entering CFI Query mode (write 98h to address 55h) allows host software to automatically detect device geometry, sector map, timings, and supported commands - simplifying driver development and enabling drop-in replacement with other CFI-compliant Flash parts.
What is the purpose of the 128-bit protection register in the AT49BV162A-70CI?
The AT49BV162A-70CI's 128-bit protection register consists of factory-programmed Block A and user-programmable Block B. Block B can be permanently locked to store cryptographic keys, device identifiers, or calibration data immune to field overwrite - providing hardware-rooted security essential for medical, industrial, and automotive certification requirements.
AT49BV162A-70CI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-TFBGA, CSPBGA
- 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:
- 200µs
- 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:
- 48-CBGA (6x8)
AT49BV162A-70CI FAQ
1.How can I place an order for AT49BV162A-70CI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV162A-70CI 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 AT49BV162A-70CI reliable?
The price and inventory of AT49BV162A-70CI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV162A-70CI is usually 5 days.
3.What payment methods are accepted for AT49BV162A-70CI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV162A-70CI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV162A-70CI?
AT49BV162A-70CI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV162A-70CI 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 AT49BV162A-70CI?
For technical support, including AT49BV162A-70CI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV162A-70CI requirements.
6.How does Aetrix verify that AT49BV162A-70CI is sourced from the original manufacturer or authorized distributors?
All AT49BV162A-70CI 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 AT49BV162A-70CI meets industry standards.
7.What is the process for return or replacement of AT49BV162A-70CI?
All AT49BV162A-70CI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV162A-70CI, 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 AT49BV162A-70CI part is unused and in its original packaging.
Return procedure for AT49BV162A-70CI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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