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Microchip Technology AT49BV163A-70TI
- Part No.:
- AT49BV163A-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV163A-70TI.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,839
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Product details
Overview
AT49BV163A-70TI from Atmel (now Microchip) is a 16-Mbit (1M × 16 / 2M × 8) single-supply Flash memory IC designed for embedded code storage and data logging in industrial control, networking equipment, and legacy system upgrades. It operates from 2.65V to 3.6V, delivers 55 ns read access time, supports sector erase with 31 × 64KB + 8 × 8KB sectors, and features suspend/resume capability for concurrent read/program operations during erase.
For engineers reviewing the AT49BV163A-70TI datasheet, AT49BV163A-70TI pinout, AT49BV163A-70TI application, or AT49BV163A-70TI equivalent, key selection considerations include its TSOP-48 package, absence of VPP pin, BYTE-selectable x8/x16 interface, CFI compliance, and sector lockdown for secure boot code protection.
Technical Context
The AT49BV163A-70TI implements a command-driven Flash architecture with dual-mode addressing (A-1 LSB on I/O15 in byte mode), CE/OE/WE control logic for bus contention avoidance, and hardware reset-initiated recovery from suspended or failed operations. Its internal write state machine handles autonomous program/erase timing without external clocks.
It supports two status reporting methods-Data Polling (I/O7) and Toggle Bit (I/O6)-with configurable behavior via a programmable status register (default "00"), and provides RDY/BUSY open-drain output for system-level operation synchronization. Sector Lockdown and 128-bit Protection Register enable firmware security and field-upgrade isolation.
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 | 70 ns maximum - defines minimum clock cycle for reliable random read in microprocessor bus interfaces |
| Supply Voltage | 2.65V–3.6V - enables direct connection to 3.3V logic rails without level-shifting |
| Sector Architecture | 39 sectors: 31 × 64KB + 8 × 8KB - allows granular firmware updates without full chip erase |
| Program Time | 12 µs per word - determines throughput for in-system programming of configuration data |
| Erase Time | 300 ms per sector - sets worst-case latency for field firmware patching |
| End-of-Operation Detection | RDY/BUSY pin + Data Polling (I/O7) + Toggle Bit (I/O6) - provides three independent hardware/software methods to synchronize host CPU |
| Endurance | 100,000 erase cycles per sector - specifies field lifetime under frequent update scenarios |
Pinout & Package
AT49BV163A-70TI is housed in a 48-lead TSOP-I (Type 1) surface-mount package with 0.5 mm pitch, compatible with standard reflow profiles and automated assembly. Unlike AT49BV162A, this variant omits the VPP pin - write protection is managed solely via software commands and sector lockdown.
| 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/O14 | Data I/O (x16) / I/O0–I/O7 (x8) | Bi-directional data path; I/O8–I/O14 tri-stated in byte mode; I/O15 repurposed as A-1 LSB |
| I/O15 / A-1 | Mode-dependent Terminal | In word mode: data bit 15; in byte mode: least-significant address bit for 8-bit access |
| BYTE | Interface Configuration Input | Logic high = x16 data width (I/O0–I/O15 active); logic low = x8 width (I/O0–I/O7 active) |
| CE, OE, WE | Chip/Output/Write Enable Controls | Three independent enables prevent bus contention; required low/high states defined per operation mode |
| RESET | Hardware Initialization Input | Pulsing low ≥500 ns forces return to read/standby mode and clears suspend states |
| RDY/BUSY | Open-Drain Status Output | Active-low signal indicates ongoing program/erase; supports wired-OR of multiple devices |
| NC | No Connect | Two pins (Pin 14 and Pin 16 in TSOP top view) are unconnected - must be left floating or grounded per layout rules |
Key Features
| Feature | Design Value |
|---|---|
| Sector Erase Architecture | 39 independently erasable sectors (31 × 64KB + 8 × 8KB) enable selective firmware updates without disrupting boot code or calibration data |
| Erase/Program Suspend & Resume | Allows reading from or programming non-suspending sectors while erase/program runs elsewhere - critical for real-time systems requiring background updates |
| Sector Lockdown | Software-enabled permanent write-protection per sector after power-on; prevents accidental overwrite of bootloader or security keys |
| Common Flash Interface (CFI) | Standardized query table at known addresses enables automatic driver detection and runtime configuration in OS-aware bootloaders |
| 128-bit Protection Register | Factory-programmed 64-bit block A + user-programmable/lockable block B - supports device-specific authentication and secure provisioning |
| Low-Power Operation | 12 mA active current and 13 µA standby draw extend battery life in portable or energy-constrained edge devices |
Applications
| Industrial PLC Firmware Storage | Network Router Boot Code |
|---|---|
|
Use Scenario: Storing firmware images and configuration tables in programmable logic controllers operating in harsh temperature environments (-40°C to +85°C). IC Role / Device Role / Timing Role: Non-volatile code storage with fast random read for instruction fetch and sector-locked boot loader partition. Use Value: 55 ns read access ensures deterministic execution timing; sector lockdown prevents corruption during field firmware upgrades over Modbus or Ethernet. |
Use Scenario: Holding boot ROM, initialization routines, and fail-safe recovery images in enterprise-grade routers and switches. IC Role / Device Role / Timing Role: Primary boot memory mapped into CPU address space; CFI support enables auto-negotiated driver loading during POST. Use Value: RDY/BUSY pin synchronizes flash operations with network stack initialization; suspend/resume allows concurrent packet processing during firmware patching. |
| Legacy Medical Device Data Logging | Automotive Diagnostic Module Calibration Storage |
|
Use Scenario: Recording sensor calibration coefficients and event logs in FDA-cleared diagnostic instruments with long service life requirements. IC Role / Device Role / Timing Role: Field-updatable parameter storage using 8KB sectors for individual sensor channel data. Use Value: 100,000 erase cycles guarantee >10 years of daily recalibration; 128-bit protection register stores cryptographic keys for HIPAA-compliant data signing. |
Use Scenario: Storing ECU calibration maps and diagnostic trouble code (DTC) history in OBD-II modules compliant with ISO 15765-2. IC Role / Device Role / Timing Role: EEPROM-replacement memory with byte/word programmability and sector-level wear leveling. Use Value: 12 µs program time enables rapid DTC logging during CAN bus arbitration; sector lockdown isolates factory calibration from dealer updates. |
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, TSOP-48, but requires 3.0–3.6V only; lacks CFI and sector lockdown | No built-in security features; suitable for cost-sensitive designs where boot protection is handled externally | Choose when CFI and lockdown are unnecessary and lower voltage margin (2.65V min) is not required |
| MX29LV160ETTI-70G | 16 Mbit, 70 ns, TSOP-48, supports 2.7–3.6V; includes CFI but no suspend/resume or 128-bit protection register | Supports basic firmware updates but cannot perform concurrent read/program during erase | Prefer when RDY/BUSY-based polling suffices and multi-sector concurrency is not needed |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160ETTI-70G, the AT49BV163A-70TI uniquely combines suspend/resume, sector lockdown, and 128-bit protection - making it the only option among the three qualified for secure, real-time firmware update architectures.
Availability
AT49BV163A-70TI is available at Aetrix Electronics and suitable for industrial control systems, networking infrastructure, medical diagnostics, and automotive diagnostic modules requiring stable component supply across extended product lifecycles.
Supply support for AT49BV163A-70TI 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, Flash memory, and secure authentication solutions for industrial, automotive, and IoT applications.
The AT49BV163A-70TI belongs to Atmel's legacy parallel-interface Flash memory product line, engineered for reliability in in-system programmable embedded systems where firmware integrity and field upgrade flexibility are critical.
FAQ
What is the VPP pin configuration for AT49BV163A-70TI?
The AT49BV163A-70TI does not include a VPP pin - this distinguishes it from the AT49BV162A variant. Write protection is implemented exclusively through software commands (Sector Lockdown, Configuration Register) and hardware RESET. The absence of VPP simplifies board design by eliminating a dedicated 12V supply rail, and aligns with modern 3.3V-only system architectures. All program/erase enable logic resides internally and is controlled via the CE/OE/WE sequence.
Does AT49BV163A-70TI support both x8 and x16 data bus widths?
Yes, AT49BV163A-70TI 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 driven, and I/O15 functions as A-1 (LSB address). This dual-mode capability allows seamless integration with 8-bit microcontrollers or 16-bit DSPs without external glue logic. Address mapping remains consistent: 1M × 16 or 2M × 8 organization is physically identical in silicon.
How does sector lockdown work on AT49BV163A-70TI?
Sector lockdown on AT49BV163A-70TI is enabled per sector using a six-bus-cycle command sequence. Once activated, the locked sector becomes permanently read-only until the next power cycle or RESET pulse - no software unlock command exists. Lockdown status is verified by reading address 00002H within the sector: I/O0 = HIGH indicates lockdown active. This feature protects boot code or calibration data from accidental overwrite during field firmware updates, and is essential for systems requiring certified firmware integrity.
What end-of-operation detection methods does AT49BV163A-70TI provide?
AT49BV163A-70TI offers three independent end-of-operation detection mechanisms: (1) RDY/BUSY pin (open-drain, active-low), (2) Data Polling on I/O7 (complement-to-data or high-assertion depending on config register), and (3) Toggle Bit on I/O6 (toggles during operation, stops when complete). These methods allow flexible host-side synchronization - RDY/BUSY suits simple polling, Data Polling enables address-specific verification, and Toggle Bit supports interrupt-driven status checking. All three are fully documented in the status bit table and supported across all program/erase modes.
Is AT49BV163A-70TI RoHS and green packaging compliant?
Yes, AT49BV163A-70TI is manufactured with green (Pb/Halide-free) packaging per JEDEC J-STD-609, meeting RoHS Directive 2011/65/EU requirements. The TSOP-48 package uses lead-free solderable terminations and halogen-free molding compound. This compliance ensures suitability for export to EU, China, Korea, and other regulated markets, and supports environmentally responsible manufacturing practices without sacrificing thermal or mechanical performance in reflow assembly.
AT49BV163A-70TI 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:
- 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-TSOP
AT49BV163A-70TI FAQ
1.How can I place an order for AT49BV163A-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV163A-70TI 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 AT49BV163A-70TI reliable?
The price and inventory of AT49BV163A-70TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV163A-70TI is usually 5 days.
3.What payment methods are accepted for AT49BV163A-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV163A-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV163A-70TI?
AT49BV163A-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV163A-70TI 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 AT49BV163A-70TI?
For technical support, including AT49BV163A-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV163A-70TI requirements.
6.How does Aetrix verify that AT49BV163A-70TI is sourced from the original manufacturer or authorized distributors?
All AT49BV163A-70TI 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 AT49BV163A-70TI meets industry standards.
7.What is the process for return or replacement of AT49BV163A-70TI?
All AT49BV163A-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV163A-70TI, 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 AT49BV163A-70TI part is unused and in its original packaging.
Return procedure for AT49BV163A-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV163A-70TI Tags
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