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Microchip Technology AT49BV163DT-70CU
- Part No.:
- AT49BV163DT-70CU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA, CSPBGA
- Datasheet:
-
AT49BV163DT-70CU.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48CBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,874
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Product details
Overview
AT49BV163DT-70CU from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) 3.0V-only parallel Flash memory IC with sector erase architecture, 70 ns read access time, and single-supply 2.65–3.6V operation. It supports byte/word programming, sector lockdown, and suspend/resume for in-system reprogramming in embedded boot code storage.
For engineers reviewing the AT49BV163DT-70CU datasheet, AT49BV163DT-70CU pinout, AT49BV163DT-70CU application, or AT49BV163DT-70CU equivalent, key selection considerations include TSOP-48/CBGA-48 package compatibility, 39-sector organization (eight 8K-byte + thirty-one 64K-byte sectors), CFI compliance, 128-bit protection register, and hardware data protection via VCC sense and control-line inhibit.
Technical Context
The AT49BV163DT-70CU implements a command-based parallel Flash interface with CE/OE/WE control logic and BYTE-pin-selectable x8/x16 data bus configuration. Its internal write state machine handles embedded program/erase timing, while RDY/BUSY, Data Polling (I/O7), and Toggle Bit (I/O6) provide synchronous status feedback.
It features dual-mode sector lockout (software-enabled per-sector lockdown), Erase Suspend/Resume (≤15 µs latency), and Program Suspend/Resume (≤10 µs latency), enabling concurrent read/program operations across non-suspending sectors. The device includes a factory-programmed 64-bit block A and user-programmable/lockable 64-bit block B in its 128-bit protection register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16 or 2,097,152 × 8), enabling compact boot code + firmware storage in resource-constrained systems |
| Read Access Time | 70 ns max - meets timing requirements for 14 MHz bus interfaces without wait states |
| Supply Voltage | 2.65–3.6V single supply - eliminates need for separate VPP or charge pumps, simplifying power design |
| Erase Architecture | 39 sectors: eight 8K-byte (4K-word) + thirty-one 64K-byte (32K-word) - allows granular firmware updates without full chip erase |
| Program/Erase End Detection | RDY/BUSY open-drain output + I/O7 Data Polling + I/O6 Toggle Bit - provides flexible, hardware- or software-driven completion signaling |
| Endurance | ≥100,000 erase cycles per sector - supports field firmware upgrades over product lifetime |
| Common Flash Interface | CFI-compliant (query mode via 98h at 55h) - enables auto-configuration and second-source compatibility in bootloader software |
| Protection Features | Sector lockdown, 128-bit protection register (factory + user blocks), hardware VCC sense & control-line inhibit - prevents accidental writes during power ramp or noise events |
Pinout & Package
AT49BV163DT-70CU is available in 48-lead TSOP (Type 1) and 48-ball CBGA packages. Both packages support identical pin functions and sector mapping, with pin 1 orientation and ball-grid layout defined in the official datasheet (3590A–FLASH–12/05).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus supporting full 1M-word (x16) or 2M-byte (x8) addressing; A-1 alias on I/O15 in byte mode |
| I/O0–I/O15 / I/O15(A-1) | Data I/O / LSB Address | x16 mode: bidirectional data on I/O0–I/O15; x8 mode: I/O0–I/O7 active, I/O15 repurposed as A-1 for byte-address LSB |
| CE, OE, WE | Chip/Output/Write Enable | Three independent controls prevent bus contention; standard microprocessor timing compatible |
| BYTE | Bus Width Select | Logic high = x16 word mode (I/O0–I/O15 active); logic low = x8 byte mode (I/O0–I/O7 active, I/O8–I/O14 tri-stated) |
| RDY/BUSY | Open-Drain Status Output | Active-low during program/erase; supports wired-OR of multiple devices on shared status line |
| RESET | Hardware Initialization | Pulsing low ≥500 ns halts ongoing operation and forces high-impedance outputs; restores read/standby mode on release |
| NC | No Connect | Unbonded pins (TSOP pins 2, 11, 12, 25; CBGA balls A1, B1, C1, D1) - must be left floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Suspend/Resume for Erase & Program | Enables real-time read access to non-suspending sectors during background erase/program - critical for responsive HMI or diagnostic logging |
| Sector Lockdown | Per-sector software lock prevents overwrite of boot code or calibration data after initial programming - ensures system reliability across firmware updates |
| 128-bit Protection Register | Factory-block A (immutable serial ID) + user-block B (programmable/lockable) - supports secure key storage and anti-cloning in industrial controllers |
| Single-Pulse Program Mode | After six-byte entry sequence, subsequent writes require only WE pulse - reduces host CPU overhead by eliminating repeated command sequences |
| Hardware Data Protection | VCC sense (<1.8V inhibits programming) + OE low / CE high / WE high inhibit - eliminates spurious writes during brown-out or reset conditions |
| Top/Bottom Boot Block Config | SA0–SA7 (8K-byte) sectors configurable as boot region - supports legacy BIOS-style boot vector placement in x8 or x16 mode |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
Use Scenario: Storing certified boot loader and safety-critical firmware in programmable logic controllers requiring field-upgradable but tamper-resistant memory. IC Role / Device Role / Timing Role: Non-volatile parallel Flash memory providing deterministic 70 ns read access for fast processor boot and secure sector-locked update partitioning. Use Value: Sector lockdown prevents unauthorized modification of safety firmware; 100,000-cycle endurance supports decades of scheduled firmware revisions. | Use Scenario: Holding FDA-approved boot code and calibration data in portable diagnostic equipment where data integrity and regulatory traceability are mandatory. IC Role / Device Role / Timing Role: CFI-compliant Flash memory enabling auto-identification and configuration in bootloader, with 128-bit register for device-specific cryptographic key binding. Use Value: Hardware VCC sense and control-line inhibit eliminate risk of corruption during battery swap or power interruption; RDY/BUSY supports fail-safe update sequencing. |
| Automotive Infotainment Head Unit | Networking Equipment Configuration Storage |
Use Scenario: Storing UI firmware, voice recognition models, and regional language packs in automotive head units subject to wide temperature (-40°C to +85°C) and vibration stress. IC Role / Device Role / Timing Role: TSOP-48 packaged Flash memory operating across full industrial temp range, with suspend/resume allowing concurrent UI rendering and background firmware patching. Use Value: 39-sector architecture isolates critical boot code (SA0–SA7) from user-updatable content; green Pb/halide-free packaging meets automotive RoHS requirements. | Use Scenario: Retaining switch/router configuration, MAC tables, and security certificates in enterprise networking gear requiring zero-downtime firmware updates. IC Role / Device Role / Timing Role: Parallel Flash memory interfaced to ARM/MIPS SoC via standard bus, using CFI to auto-negotiate timing parameters during cold boot. Use Value: Erase suspend allows live packet forwarding while updating non-active firmware image; sector lockdown protects factory-default configuration partitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF1601C-70-4C-EKE | 16 Mbit, 70 ns, 2.7–3.6V, 48-TSOP; lacks CFI, no 128-bit protection register, no sector suspend/resume | Lower-cost replacement where boot code security and concurrent read/program are not required | Choose when CFI auto-configuration and hardware suspend are unnecessary; verify sector map alignment with SA0–SA38 layout |
| MX29LV160ETTI-70G | 16 Mbit, 70 ns, 2.7–3.6V, 48-TSOP; supports CFI and sector protection, but no 128-bit register or suspend/resume | Drop-in alternative for basic firmware storage where enhanced security and real-time suspend are secondary | Prefer when migrating from legacy Spansion designs; confirm RESET behavior matches AT49BV163DT-70CU's 500 ns minimum pulse requirement |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160ETTI-70G, the AT49BV163DT-70CU uniquely delivers integrated sector suspend/resume, factory/user 128-bit protection, and top/bottom boot flexibility - making it optimal for safety-critical or field-upgradable embedded systems demanding both security and real-time responsiveness.
Availability
AT49BV163DT-70CU is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and automotive infotainment systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT49BV163DT-70CU 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 technical and manufacturing continuity for the AT49BV series. The company specializes in scalable, secure, and reliable microcontrollers, analog, and memory solutions for industrial and automotive markets.
The AT49BV163DT-70CU belongs to Microchip's legacy parallel Flash memory product line, designed specifically for embedded systems requiring deterministic boot performance, sector-level firmware update capability, and hardware-enforced data protection in harsh environments.
FAQ
What is the difference between AT49BV163D and AT49BV163DT, and which one does AT49BV163DT-70CU belong to?
The AT49BV163DT-70CU is the "T" variant of the AT49BV163D family, distinguished by its sector map: AT49BV163DT organizes memory into thirty-nine 64K-byte sectors (SA0–SA38), whereas AT49BV163D uses eight 8K-byte + thirty-one 64K-byte sectors. The "-70CU" suffix denotes 70 ns access time and 48-lead TSOP package. All electrical specs, command set, and pinout remain identical between D and DT variants.
Does AT49BV163DT-70CU support both x8 and x16 data bus configurations, and how is the mode selected?
Yes, AT49BV163DT-70CU supports both x8 and x16 modes via the BYTE pin. When BYTE = high, I/O0–I/O15 operate as a 16-bit data bus; when BYTE = low, only I/O0–I/O7 are active as an 8-bit bus, and I/O15 functions as A-1 (LSB address). This dual-mode capability allows seamless integration with 8-bit or 16-bit microcontrollers without external glue logic.
How does the sector lockdown feature work in AT49BV163DT-70CU, and can locked sectors be unlocked?
In AT49BV163DT-70CU, sector lockdown is enabled per sector using the six-bus-cycle Sector Lockdown command. Once locked, a sector becomes read-only - immune to program or erase commands until the next power cycle or RESET pulse. Lockdown detection is verified by reading address 00002H within the sector: I/O0 = high indicates lockdown active. Unlocking requires hardware reset or power-down; no software unlock command exists.
What status mechanisms does AT49BV163DT-70CU provide to detect end-of-program or end-of-erase operations?
AT49BV163DT-70CU offers three concurrent status mechanisms: (1) RDY/BUSY open-drain pin (active-low during operation), (2) Data Polling on I/O7 (complement data → true data transition), and (3) Toggle Bit on I/O6 (toggling stops at completion). These may be used independently or in combination, with algorithms defined in the datasheet for robust detection under all configuration register settings (00 or 01).
Is AT49BV163DT-70CU compliant with Common Flash Interface (CFI), and how is CFI accessed?
Yes, AT49BV163DT-70CU is fully CFI-compliant. To enter CFI Query mode, write 0x98 to address 0x55 while the device is in read mode or Product ID mode. CFI data (device geometry, timings, voltages) is then readable from predefined addresses (e.g., 0x10, 0x12). Exit CFI mode using the Product ID Exit command (0xF0 at 0x555/0xAAA). CFI enables bootloader auto-configuration and vendor interoperability.
AT49BV163DT-70CU 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:
- 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-CBGA (6x8)
AT49BV163DT-70CU FAQ
1.How can I place an order for AT49BV163DT-70CU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV163DT-70CU 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-70CU reliable?
The price and inventory of AT49BV163DT-70CU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV163DT-70CU is usually 5 days.
3.What payment methods are accepted for AT49BV163DT-70CU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV163DT-70CU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV163DT-70CU?
AT49BV163DT-70CU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV163DT-70CU 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-70CU?
For technical support, including AT49BV163DT-70CU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV163DT-70CU requirements.
6.How does Aetrix verify that AT49BV163DT-70CU is sourced from the original manufacturer or authorized distributors?
All AT49BV163DT-70CU 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-70CU meets industry standards.
7.What is the process for return or replacement of AT49BV163DT-70CU?
All AT49BV163DT-70CU units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV163DT-70CU, 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-70CU part is unused and in its original packaging.
Return procedure for AT49BV163DT-70CU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV163DT-70CU Tags
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