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Microchip Technology AT49BV163D-70TU-T
- Part No.:
- AT49BV163D-70TU-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV163D-70TU-T.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,380
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Product details
Overview
AT49BV163D-70TU-T from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) single-supply Flash memory IC with 70 ns read access time, sector erase architecture (31 × 64 KB + 8 × 8 KB), and support for in-system programming. It operates across 2.65V–3.6V, delivers 10 µs word program time, and integrates Erase/Program Suspend/Resume for concurrent read-write operations - enabling real-time firmware updates in embedded boot loaders.
For engineers reviewing the AT49BV163D-70TU-T datasheet, AT49BV163D-70TU-T pinout, AT49BV163D-70TU-T application, or AT49BV163D-70TU-T equivalent, this page provides verified technical context, validated pin functions, confirmed sector lockdown behavior, CFI-compliant configuration, and precise timing parameters required for bootloader partitioning, secure code storage, and mixed-mode (x8/x16) interface design.
Technical Context
The AT49BV163D-70TU-T implements a command-register-based Flash architecture with dual-mode data bus (x8/x16 selectable via BYTE pin), 39-sector erase topology (31 large + 8 small sectors), and hardware-assisted suspend/resume logic that isolates active erase/program operations from concurrent reads in non-suspended sectors. Its READY/BUSY open-drain output and I/O6/I/O7 status bits provide deterministic end-of-operation detection without polling overhead.
It supports Common Flash Interface (CFI) Query mode (entry via 98h at address 55h), enabling runtime discovery of sector map, timing parameters, and protection features. The 128-bit protection register includes factory-programmed Block A and user-programmable (and lockable) Block B - used for secure key storage or device-specific identifiers in certified firmware deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16 or 2,097,152 × 8) - defines maximum firmware image size and partition granularity for boot/code/data separation. |
| Read Access Time | 70 ns - enables direct execution (XIP) from Flash in systems with ≤14 MHz bus clocks without wait states. |
| Supply Voltage Range | 2.65 V to 3.6 V - compatible with 3.3 V logic domains and tolerant of brown-out conditions down to 2.65 V during power sequencing. |
| Word Program Time | 10 µs - allows high-throughput field firmware patching; supported by Single Pulse Program Mode to eliminate multi-cycle command overhead. |
| Sector Erase Time | 100 ms max per sector - predictable latency for updating individual firmware modules without full chip erase. |
| Erase Endurance | 100,000 cycles minimum - qualifies for industrial control applications requiring frequent OTA updates over 10+ year lifetimes. |
| Standby Current | 15 µA - enables ultra-low-power retention in battery-backed systems during sleep modes. |
Pinout & Package
AT49BV163D-70TU-T is packaged in a 48-lead TSOP Type I (Thin Small Outline Package) with 0.5 mm pitch, compliant with JEDEC MO-141BA. Pin 1 is marked by notch or dot; package dimensions are 12.0 mm × 20.0 mm × 1.2 mm (max height).
| 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 enables LSB extension for x8 operation. |
| I/O0–I/O14 | Bi-directional Data I/O | Primary data path; tri-stated when CE or OE high; I/O15 serves dual role (data or A-1) depending on BYTE state. |
| I/O15 / A-1 | Mode-Dependent Terminal | In word mode: data bit 15; in byte mode: LSB address input (A-1), enabling seamless x8/x16 interface migration. |
| BYTE | Bus Width Select | Logic high = x16 mode (I/O0–I/O15 active); logic low = x8 mode (I/O0–I/O7 active, I/O8–I/O14 tri-stated). |
| CE, OE, WE | Control Enables | Three independent enables prevent bus contention; OE/CE low + WE high = read; WE low + CE/OE valid = write/erase command latch. |
| RDY/BUSY | Open-Drain Status Output | Active-low during internal operations; supports wired-OR connection for multi-device status monitoring on shared bus. |
| RESET | Hardware Initialization | Pulsing low ≥500 ns forces return to read/standby mode and clears suspend states - critical for recovery after failed programming. |
Key Features
| Feature | Design Value |
|---|---|
| Erase/Program Suspend & Resume | Enables reading from non-suspended sectors while erasing/programming another - essential for real-time interrupt handling during firmware updates. |
| Sector Lockdown | Per-sector write-protection activated via 6-cycle command; locked sectors remain read-only until power cycle - secures boot ROM against accidental overwrite. |
| 128-bit Protection Register | Factory-block A (immutable ID) + user-block B (programmable & lockable) - supports cryptographic key binding and device authentication in secure boot chains. |
| Common Flash Interface (CFI) | Standardized query table accessible at known addresses - eliminates hard-coded timing assumptions and enables automatic driver adaptation across flash vendors. |
| Single Pulse Program Mode | Reduces programming overhead from 4-cycle command sequence to single WE pulse after 6-byte entry - cuts average write latency by >60% in burst update scenarios. |
Applications
| Industrial PLC Firmware Storage | Automotive Infotainment Boot Loader |
|---|---|
Use Scenario: Storing and updating firmware images for programmable logic controllers operating in harsh temperature environments (-40°C to +85°C). IC Role / Device Role / Timing Role: Non-volatile code storage with sector-lockdown protecting boot loader and safety-critical routines; 70 ns access enables XIP execution from Flash. Use Value: Eliminates external SRAM for code shadowing; 100,000 erase cycles ensure >15 years of field updates under daily maintenance schedules. |
Use Scenario: Hosting primary boot code and secure boot verification keys in head-unit ECUs with ASIL-B compliance requirements. IC Role / Device Role / Timing Role: Secure storage medium with 128-bit protection register (Block A factory ID + Block B lockable key); CFI enables auto-negotiated driver initialization. Use Value: Prevents unauthorized firmware injection via immutable sector lockdown and cryptographically bound keys stored in protected register space. |
| Medical Device Configuration Memory | Networking Equipment Image Partitioning |
Use Scenario: Retaining calibrated sensor offsets, user preferences, and regulatory audit logs in portable diagnostic equipment with battery backup. IC Role / Device Role / Timing Role: Low-power (15 µA standby) persistent memory with suspend/resume allowing background log writes during active measurement cycles. Use Value: Guarantees data integrity during unexpected power loss; sector erase granularity enables selective log rotation without disturbing calibration tables. |
Use Scenario: Managing dual-image firmware partitions (active/backup) in enterprise switches requiring zero-downtime upgrades. IC Role / Device Role / Timing Role: Dual-mode (x8/x16) interface supports legacy 8-bit microcontrollers and modern 16-bit bus masters; 39-sector map enables atomic image swap. Use Value: Enables A/B partitioning with <100 ms sector erase - achieving sub-second failover during firmware rollback or recovery. |
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 different command set (SST proprietary) and lacks CFI support. | No standardized CFI query - requires vendor-specific drivers; no 128-bit protection register. | Select only if existing SST ecosystem integration exists and CFI/secure register features are unnecessary. |
| MX29LV160DBTI-70G | Pin-compatible TSOP-48, 70 ns access, supports CFI and sector protection, but offers only 10,000 erase cycles and higher standby current (30 µA). | Limited endurance and power efficiency - unsuitable for high-frequency update or battery-powered use cases. | Acceptable for cost-sensitive consumer applications where update frequency is low and power budget is宽松. |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160DBTI-70G, the AT49BV163D-70TU-T uniquely combines CFI compliance, 100,000-cycle endurance, 128-bit secure register, and true suspend/resume - making it the only option qualified for safety-critical, long-lifecycle, and secure-boot designs requiring field-upgradable firmware.
Availability
AT49BV163D-70TU-T is available at Aetrix Electronics and suitable for industrial control systems, automotive infotainment units, and medical diagnostic devices requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for AT49BV163D-70TU-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 support for the AT49BV series. The company specializes in secure, reliable, and long-lifecycle semiconductor solutions for industrial, automotive, and aerospace markets.
The AT49BV163D-70TU-T belongs to Atmel's legacy parallel Flash memory product line, designed specifically for embedded systems requiring robust in-system programmability, sector-level security, and deterministic timing in resource-constrained environments.
FAQ
What is the exact memory organization of the AT49BV163D-70TU-T?
The AT49BV163D-70TU-T is organized as 1,048,576 words of 16 bits each (2,097,152 bytes of 8 bits each). In x16 mode, data appears on I/O0–I/O15; in x8 mode (BYTE = low), only I/O0–I/O7 are active and I/O15 functions as A-1. This dual-width capability allows flexible integration with both 8-bit and 16-bit microcontrollers without redesigning the PCB layout.
Does the AT49BV163D-70TU-T support Common Flash Interface (CFI)?
Yes, the AT49BV163D-70TU-T fully supports CFI. Entering CFI Query mode requires writing 98h to address 55h, after which the system can read standardized parameter tables at defined addresses (e.g., sector map, timing values, vendor ID). This enables driver portability and eliminates hardcoded assumptions about erase times or sector boundaries - a key advantage over non-CFI Flash devices like older SST or Intel parts.
How does sector lockdown work on the AT49BV163D-70TU-T?
Sector lockdown on the AT49BV163D-70TU-T is enabled per sector using a six-bus-cycle command (555h/AAh → AAah/55h → 555h/80h → 555h/AAh → AAah/55h → SA/60h). Once locked, the sector becomes read-only until the next power cycle or RESET pulse. Lock status is verified by reading address 00002h within the sector: I/O0 = high indicates lockdown active. This protects boot code from accidental corruption during field updates.
What are the valid operating voltage ranges for the AT49BV163D-70TU-T?
The AT49BV163D-70TU-T operates across a single supply range of 2.65 V to 3.6 V. Input pins (A0–A19, CE, OE, WE, RESET, BYTE) tolerate up to 5.5 V regardless of VCC level, simplifying interface with 5 V logic. I/O pins are limited to 0 V to VCC + 0.6 V. Below 2.65 V, hardware data protection inhibits programming - preventing partial writes during brown-out conditions.
Can the AT49BV163D-70TU-T be used in both x8 and x16 configurations?
Yes, the AT49BV163D-70TU-T supports both configurations via the BYTE pin. When BYTE = high, it operates in x16 mode with I/O0–I/O15 active. When BYTE = low, it operates in x8 mode: I/O0–I/O7 carry data, I/O8–I/O14 are tri-stated, and I/O15 functions as A-1 (LSB address). This eliminates the need for external multiplexing logic and allows reuse of the same Flash part across multiple platform generations.
AT49BV163D-70TU-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 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:
- 48-TSOP
AT49BV163D-70TU-T FAQ
1.How can I place an order for AT49BV163D-70TU-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV163D-70TU-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 AT49BV163D-70TU-T reliable?
The price and inventory of AT49BV163D-70TU-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV163D-70TU-T is usually 5 days.
3.What payment methods are accepted for AT49BV163D-70TU-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV163D-70TU-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV163D-70TU-T?
AT49BV163D-70TU-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV163D-70TU-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 AT49BV163D-70TU-T?
For technical support, including AT49BV163D-70TU-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV163D-70TU-T requirements.
6.How does Aetrix verify that AT49BV163D-70TU-T is sourced from the original manufacturer or authorized distributors?
All AT49BV163D-70TU-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 AT49BV163D-70TU-T meets industry standards.
7.What is the process for return or replacement of AT49BV163D-70TU-T?
All AT49BV163D-70TU-T units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV163D-70TU-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 AT49BV163D-70TU-T part is unused and in its original packaging.
Return procedure for AT49BV163D-70TU-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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