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Microchip Technology AT49BV163A-70TU
- Part No.:
- AT49BV163A-70TU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV163A-70TU.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,064
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Product details
Overview
AT49BV163A-70TU from Atmel (now Microchip) is a 16-Mbit (1M × 16 / 2M × 8) 3.0 V-only parallel Flash memory with sector erase architecture, 55 ns read access time, and suspend/resume capability for in-system programming. It supports byte/word configuration via BYTE pin, features CFI compliance, and targets embedded boot code storage in industrial controllers and legacy communication modules.
For engineers reviewing the AT49BV163A-70TU datasheet, AT49BV163A-70TU pinout, AT49BV163A-70TU application, or AT49BV163A-70TU equivalent, key selection criteria include sector lockdown support, RDY/BUSY signaling, TSOP-48 package compatibility, and absence of VPP pin - critical for simplified 3.0 V-only system design without external voltage switching.
Technical Context
This device implements a parallel x16/x8 configurable interface with CE/OE/WE control logic to prevent bus contention. Its internal write state machine handles embedded program and erase cycles, while the READY/BUSY pin and I/O-based status bits (I/O5, I/O6, I/O7) provide real-time operation feedback without requiring external clocks.
The AT49BV163A-70TU uses a 39-sector architecture (31 × 64 KB + 8 × 8 KB), supports sector lockdown via six-cycle command, and includes a factory-programmed 64-bit block plus user-programmable 64-bit block in its 128-bit protection register - enabling secure boot code anchoring and firmware integrity verification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16 or 2,097,152 × 8), enabling full boot image storage for 8-bit/16-bit microcontrollers. |
| Read Access Time | 55 ns max - meets timing requirements for 16 MHz bus interfaces without wait states. |
| Supply Voltage | 2.65 V to 3.6 V single supply - eliminates need for dual-voltage rails in 3.3 V systems. |
| Sector Erase Time | 300 ms max per sector - enables selective field updates without full reflash downtime. |
| Program Time | 12 µs per word - supports rapid patching of runtime-modifiable configuration tables. |
| Erase End Detection | RDY/BUSY pin + Data Polling (I/O7) + Toggle Bit (I/O6) - provides hardware- and software-synchronized completion signaling. |
| Endurance | 100,000 erase cycles per sector - ensures multi-year field reliability in firmware update scenarios. |
| CFI Support | Compliant with JEDEC JESD68 - allows automatic driver initialization and vendor-agnostic flash management in BSPs. |
Pinout & Package
AT49BV163A-70TU is available in 48-lead TSOP (Type 1) package. Unlike AT49BV162A(T), it omits the VPP pin - simplifying PCB layout and eliminating external 12 V generation circuitry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit addressing supports full 1M-word space; A-1 function on I/O15 in byte mode extends address range. |
| I/O0–I/O14 | Data I/O (x16) | Bi-directional data path; I/O8–I/O14 tri-stated in byte mode. |
| I/O15 / A-1 | Word Data Output / Byte LSB Address | Dual-function pin: active as MSB in x16 mode; repurposed as A-1 (LSB) in x8 mode for 2M-byte addressing. |
| BYTE | Configuration Control | Logic high = x16 mode (I/O0–I/O15 active); logic low = x8 mode (I/O0–I/O7 active, I/O15 = A-1). |
| CE, OE, WE | Chip/Output/Write Enable | Three independent controls prevent bus contention; OE/CE low + WE high = read mode. |
| RDY/BUSY | Open-Drain Status Output | Active-low signal indicates active program/erase; supports wired-OR of multiple devices on shared bus. |
| RESET | Hardware Initialization | Pulsing low ≥500 ns forces return to read/standby mode - essential for recovery after failed operations. |
| NC | No Connect | Two NC pins (Pin 12 & Pin 15 in TSOP) - must be left unconnected; no internal connection. |
Key Features
| Feature | Design Value |
|---|---|
| Sector Erase Architecture | 39 independently lockable sectors (31 × 64 KB + 8 × 8 KB) enable granular firmware partitioning - e.g., separate bootloader, application, and parameter sectors. |
| Erase/Program Suspend | Allows reading from non-suspending sectors during active erase/program - critical for real-time systems needing background updates without interrupting foreground execution. |
| 128-bit Protection Register | Factory-programmed 64-bit ID + user-lockable 64-bit block - enables cryptographic key binding and anti-cloning for certified industrial firmware. |
| Common Flash Interface (CFI) | Standardized query table at fixed addresses - permits auto-detection and driver selection in Linux MTD or U-Boot without hard-coded timing parameters. |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), power-on delays (10 ms/100 ns), and control-line gating - prevents corruption during brown-out or hot-plug events. |
| Top/Bottom Boot Block | Configurable boot sector location - supports legacy BIOS-style boot from top address or modern embedded boot from bottom address without hardware modification. |
Applications
| Industrial PLC Firmware Storage | Legacy Telecom Line Card Boot Memory |
|---|---|
Use Scenario: Storing firmware and configuration data in programmable logic controllers operating in harsh temperature environments (-40°C to +85°C). IC Role / Device Role / Timing Role: Non-volatile boot memory providing immediate code execution on power-up; 55 ns access ensures deterministic startup within 100 µs. Use Value: Sector lockdown protects bootloader from accidental overwrite during field firmware upgrades, maintaining system recoverability. | Use Scenario: Hosting boot code and DSP microcode in TDM-based voice gateway line cards with long product lifecycles. IC Role / Device Role / Timing Role: Parallel x16 Flash interfaced to SH-3 or MIPS-based baseband processors; RDY/BUSY pin synchronizes DMA transfers during reprogramming. Use Value: CFI compliance enables unified flash driver across multiple generations of line cards, reducing BSP maintenance overhead. |
| Medical Diagnostic Equipment Configuration | Automotive Body Control Module Calibration |
Use Scenario: Retaining calibration tables and safety-critical configuration parameters in ultrasound imaging systems requiring IEC 62304 compliance. IC Role / Device Role / Timing Role: Secure storage element using 128-bit protection register to bind calibration data to device serial number. Use Value: 100,000 erase cycles guarantee >10 years of recalibration cycles under daily clinical use. | Use Scenario: Storing ECU calibration maps and diagnostic trouble codes (DTCs) in body control modules where EEPROM endurance is insufficient. IC Role / Device Role / Timing Role: High-reliability parallel Flash replacing serial EEPROM; sector erase isolates DTC logging from calibration updates. Use Value: Suspend/resume feature allows real-time DTC logging during active calibration downloads without data loss. |
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 V supply, but requires VPP = 12 V for programming - adds complexity vs. AT49BV163A-70TU's single-supply operation. | Lacks CFI support and sector suspend - limits driver portability and real-time update capability. | Choose only if legacy board already includes 12 V VPP rail; otherwise AT49BV163A-70TU reduces BOM count and layout area. |
| MX29LV160ETTI-70G | 16 Mbit, 70 ns, 3.0 V, TSOP-48, with CFI and sector lockdown - but uses different command set and lacks RDY/BUSY pin (relies solely on toggle bit). | Requires modified driver logic for status polling; no hardware-ready signal for DMA synchronization. | Select when migrating from Macronix platform; avoid if existing firmware depends on RDY/BUSY edge-triggered interrupts. |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160ETTI-70G, the AT49BV163A-70TU uniquely combines single-supply programming, RDY/BUSY signaling, and full CFI compliance - delivering lower system integration effort and higher real-time update reliability in resource-constrained embedded designs.
Availability
AT49BV163A-70TU is available at Aetrix Electronics and suitable for industrial PLCs, legacy telecom line cards, and medical diagnostic equipment requiring stable component supply and long-term obsolescence management.
Supply support for AT49BV163A-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 AT49BV163A-70TU.
The AT49BV163A-70TU belongs to Atmel's parallel Flash memory family designed for reliable in-system programmability in cost-sensitive, long-lifecycle embedded systems - especially where boot code integrity and field-upgrade safety are paramount.
FAQ
Does AT49BV163A-70TU require a VPP voltage for programming?
No, AT49BV163A-70TU does not require VPP - unlike AT49BV162A(T), it omits the VPP pin entirely. All program and erase operations execute from the 2.65–3.6 V VCC supply alone, simplifying power design and eliminating external 12 V circuitry. This is confirmed in the "Pin Configurations" section noting "VPP pin is not available for the AT49BV163A(T)".
What is the difference between AT49BV163A-70TU and AT49BV162A-70TU?
The AT49BV163A-70TU and AT49BV162A-70TU share identical density, timing, and feature set except for VPP presence: AT49BV162A-70TU includes VPP for enhanced write protection, while AT49BV163A-70TU removes it for pure single-supply operation. Both use the same 48-lead TSOP package and pinout, with VPP replaced by NC in AT49BV163A-70TU.
How does sector lockdown work on AT49BV163A-70TU?
Sector lockdown on AT49BV163A-70TU is enabled via a six-cycle command targeting a specific sector address. Once locked, that sector becomes permanently read-only until next power cycle or RESET - preventing accidental erasure of bootloader or calibration data. Lock status is verified by reading address 00002H within the sector; I/O0 = high indicates lockdown active.
Can AT49BV163A-70TU operate in both x8 and x16 modes?
Yes, AT49BV163A-70TU supports both configurations: when BYTE = high, it operates in x16 mode with I/O0–I/O15 active; when BYTE = low, it switches to x8 mode with I/O0–I/O7 active and I/O15 repurposed as A-1 (LSB address). This flexibility allows seamless integration with 8-bit and 16-bit microcontrollers without external glue logic.
Is AT49BV163A-70TU still recommended for new designs?
No - the datasheet explicitly marks AT49BV163A-70TU as "Not Recommended for New Design". However, Aetrix Electronics continues to support it with full lifecycle management, traceable sourcing, and obsolescence mitigation for existing industrial and medical platforms requiring long-term supply continuity.
AT49BV163A-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:
- 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-70TU FAQ
1.How can I place an order for AT49BV163A-70TU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV163A-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 AT49BV163A-70TU reliable?
The price and inventory of AT49BV163A-70TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV163A-70TU is usually 5 days.
3.What payment methods are accepted for AT49BV163A-70TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV163A-70TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV163A-70TU?
AT49BV163A-70TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV163A-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 AT49BV163A-70TU?
For technical support, including AT49BV163A-70TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV163A-70TU requirements.
6.How does Aetrix verify that AT49BV163A-70TU is sourced from the original manufacturer or authorized distributors?
All AT49BV163A-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 AT49BV163A-70TU meets industry standards.
7.What is the process for return or replacement of AT49BV163A-70TU?
All AT49BV163A-70TU units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV163A-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 AT49BV163A-70TU part is unused and in its original packaging.
Return procedure for AT49BV163A-70TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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