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Microchip Technology AT49BV163DT-70TU
- Part No.:
- AT49BV163DT-70TU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV163DT-70TU.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,689
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Product details
Overview
AT49BV163DT-70TU from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) single-supply 3V-only parallel Flash memory with 70 ns read access time, sector erase architecture (31 × 64 KB + 8 × 8 KB), and suspend/resume capability for in-system programming. It supports byte/word configuration via the BYTE pin and operates across 2.65V–3.6V.
For engineers reviewing the AT49BV163DT-70TU datasheet, AT49BV163DT-70TU pinout, AT49BV163DT-70TU application, or AT49BV163DT-70TU equivalent, key selection considerations include its TSOP-48/CBGA-48 packaging, CFI compliance, 100,000 erase cycles, hardware data protection, and dual-mode (x8/x16) I/O flexibility for embedded boot code storage and firmware updates.
Technical Context
The AT49BV163DT-70TU implements a command-based parallel interface with CE/OE/WE control logic and supports both chip and sector erase via six-byte software commands. Its internal write state machine handles program/erase timing autonomously without external clocks.
It features dual status detection-READY/BUSY pin (open-drain) and status bits on I/O2/I/O5/I/O6/I/O7-with configurable behavior via a programmable register (default "00"). The device integrates a 128-bit protection register (factory-block A + user-lockable block B) and hardware VCC-sense protection below 1.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16 or 2,097,152 × 8), enabling compact firmware storage for microcontroller boot images. |
| Read Access Time | 70 ns max - meets timing requirements for 14 MHz bus interfaces in legacy embedded systems. |
| Erase Architecture | 39 sectors: 31 × 64 KB + 8 × 8 KB - allows granular firmware partitioning (e.g., bootloader + application + config). |
| Program/Erase End Detection | RDY/BUSY pin + Data Polling (I/O7) + Toggle Bit (I/O6) - enables robust host-side operation monitoring without polling overhead. |
| Endurance & Data Retention | ≥100,000 erase cycles; 20-year data retention - suitable for field-upgradable industrial controllers with infrequent reprogramming. |
| Supply Voltage Range | 2.65V to 3.6V - compatible with 3.3V system rails and tolerant of brown-out conditions down to 2.65V. |
| Package Options | 48-lead TSOP-I (Type 1) and 48-ball CBGA - supports both surface-mount assembly and legacy PCB layouts. |
Pinout & Package
AT49BV163DT-70TU is available in 48-lead TSOP-I (Type 1) and 48-ball CBGA packages. Both packages support identical pin functions and signal mapping per the manufacturer's pin configuration diagrams.
| 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 / I/O15(A-1) | Data I/O / LSB Address | In word mode (BYTE=1): bidirectional x16 data path; in byte mode (BYTE=0): x8 data + A-1 address input on I/O15. |
| CE, OE, WE | Chip/Output/Write Enable | Three independent controls prevent bus contention; standard microprocessor timing compatibility. |
| RDY/BUSY | Open-Drain Status Output | Active-low during internal operations; supports wired-OR connection for multi-device status monitoring. |
| RESET | Hardware Initialization | Halts ongoing operations and forces high-impedance outputs; required to exit suspend or error states. |
| BYTE | Bus Width Select | Configures interface as x8 (BYTE=0) or x16 (BYTE=1); determines I/O pin usage and address alignment. |
| NC | No Connect | Unbonded pins in both TSOP and CBGA packages - must be left floating or grounded per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Sector Lockdown | Per-sector write-protection enabled via software command - secures bootloader regions against accidental overwrite during field updates. |
| Erase/Program Suspend | Interrupt long erase/program operations to read or program other sectors - enables real-time firmware patching without halting system execution. |
| Common Flash Interface (CFI) | Standardized query table accessible at address 0x55 (data 0x98) - allows runtime auto-configuration of drivers and OS flash utilities. |
| 128-bit Protection Register | Factory-programmed 64-bit ID + user-programmable/lockable 64-bit block - supports secure device authentication and anti-cloning mechanisms. |
| Hardware Data Protection | VCC sense (<1.8V inhibits programming) + control-line gating (OE low/CE high/WE high blocks writes) - prevents corruption during power transitions. |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
|
Use Scenario: Storing certified bootloader and safety-critical firmware in programmable logic controllers requiring field updates under strict regulatory traceability. IC Role / Device Role / Timing Role: Non-volatile parallel Flash memory providing x16 interface for fast MCU code fetch and sector-locked boot region protection. Use Value: Sector lockdown ensures bootloader integrity; 100K erase cycles support >10 years of scheduled firmware revisions; CFI enables automated driver validation. |
Use Scenario: Holding FDA-compliant boot code and calibration data in portable diagnostic equipment where data retention and tamper resistance are mandatory. IC Role / Device Role / Timing Role: Secure, low-power Flash memory with 128-bit protection register used for cryptographic key storage and version-locked firmware partitions. Use Value: Block B lockout prevents unauthorized calibration modification; 15 µA standby current extends battery life; RDY/BUSY simplifies real-time update sequencing. |
| Automotive Infotainment Head Unit | Networking Equipment Configuration Storage |
|
Use Scenario: Hosting upgradable firmware and UI assets in automotive head units operating across extended temperature ranges (-40°C to +85°C). IC Role / Device Role / Timing Role: Parallel Flash memory with 70 ns access time and TSOP-48 package, interfaced directly to ARM9 application processor for fast boot. Use Value: Top/bottom boot block configuration supports dual-image fail-safe boot; suspend/resume enables seamless OTA updates without system reset. |
Use Scenario: Storing switch/router configuration tables, MAC address pools, and feature license keys in enterprise-grade networking hardware. IC Role / Device Role / Timing Role: High-reliability Flash memory with hardware write protection and sector-level erase for atomic config commits. Use Value: Individual 8 KB sector lockout isolates license data from firmware; CFI simplifies cross-platform driver porting; green Pb/Halide-free packaging meets RoHS compliance. |
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 | 16 Mbit, 70 ns, 3.0–3.6V supply; lacks CFI and 128-bit protection register; uses different command set. | No built-in sector lockdown or suspend/resume - requires external logic for safe field updates. | Choose when cost sensitivity outweighs advanced security and real-time update features. |
| MX29LV160ETTI-70G | 16 Mbit, 70 ns, 2.7–3.6V; includes CFI and sector protection but no 128-bit register; different pinout (48-TSOP, non-drop-in). | Compatible for basic firmware storage but not for secure boot implementations requiring hardware ID binding. | Prefer for legacy designs already using Macronix toolchains; verify board layout compatibility before substitution. |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160ETTI-70G, the AT49BV163DT-70TU uniquely combines CFI, sector lockdown, suspend/resume, and 128-bit protection in a pin-compatible TSOP/CBGA footprint - making it optimal for safety-certified and field-upgradable embedded systems where firmware integrity and update flexibility are critical.
Availability
AT49BV163DT-70TU is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics, automotive infotainment, and networking equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT49BV163DT-70TU 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 legacy Atmel Flash products including the AT49BV series. The company specializes in microcontrollers, analog, and non-volatile memory solutions for industrial and automotive markets.
The AT49BV163DT-70TU belongs to Atmel's parallel Flash memory product line, designed specifically for embedded systems requiring reliable, in-system programmable code storage with hardware-level security and real-time update capabilities.
FAQ
What is the difference between AT49BV163D and AT49BV163DT?
The AT49BV163DT-70TU is the TSOP-48 packaged variant of the AT49BV163D family, distinguished by its top-boot sector configuration (SA0–SA7 as 64 KB sectors) versus the bottom-boot layout in the base AT49BV163D. This affects address mapping for boot code placement and is documented in Section 10 of the datasheet. Both share identical electrical specs, command sets, and endurance ratings.
Does AT49BV163DT-70TU support both x8 and x16 data bus widths?
Yes, AT49BV163DT-70TU supports configurable bus width via the BYTE pin: logic high selects x16 mode (I/O0–I/O15 active), logic low selects x8 mode (I/O0–I/O7 active, I/O15 repurposed as A-1). This dual-mode capability allows flexible integration with 8-bit or 16-bit microcontrollers without external glue logic.
How does the sector lockdown feature work on AT49BV163DT-70TU?
The AT49BV163DT-70TU implements per-sector lockdown via a six-cycle software command (0x60). Once enabled, a locked sector becomes read-only - immune to erase or program operations until the next power cycle or RESET assertion. Lockdown status is verified by reading address 00002H within the sector, where I/O0 = 1 indicates protection is active.
Can AT49BV163DT-70TU be used in systems with 5V-tolerant I/Os?
No - while address and control inputs (A0–A19, CE, OE, WE, RESET, BYTE) tolerate 0–5.5V, the I/O pins are strictly limited to 0–VCC+0.6V. With VCC ≤ 3.6V, maximum I/O voltage is 4.2V. Direct connection to 5V buses risks damage; level-shifting circuitry is required for 5V system interfacing.
What is the purpose of the 128-bit protection register in AT49BV163DT-70TU?
The AT49BV163DT-70TU's 128-bit protection register comprises factory-programmed 64-bit ID (block A) and user-programmable/lockable 64-bit data (block B). Block B can store cryptographic keys or device-specific identifiers and, once locked, cannot be rewritten - enabling hardware-rooted authentication and anti-counterfeiting in secure boot architectures.
AT49BV163DT-70TU 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:
- 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
AT49BV163DT-70TU FAQ
1.How can I place an order for AT49BV163DT-70TU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV163DT-70TU 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 AT49BV163DT-70TU reliable?
The price and inventory of AT49BV163DT-70TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV163DT-70TU is usually 5 days.
3.What payment methods are accepted for AT49BV163DT-70TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV163DT-70TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV163DT-70TU?
AT49BV163DT-70TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV163DT-70TU 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 AT49BV163DT-70TU?
For technical support, including AT49BV163DT-70TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV163DT-70TU requirements.
6.How does Aetrix verify that AT49BV163DT-70TU is sourced from the original manufacturer or authorized distributors?
All AT49BV163DT-70TU 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 AT49BV163DT-70TU meets industry standards.
7.What is the process for return or replacement of AT49BV163DT-70TU?
All AT49BV163DT-70TU units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV163DT-70TU, 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 AT49BV163DT-70TU part is unused and in its original packaging.
Return procedure for AT49BV163DT-70TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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